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KX-F910BX
SAFETY PRECAUTIONS
INTRODUCTION
1. 2. 3. 4. 5. Before servicing, unplug the power cord to prevent an electric shock. When replacing parts, use only the manufacturer's recommended components. Check the condition of the power cord. Replace if wear or damage is evident. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent the customer from being exposed to shock hazards.
INSULATION RESISTANCE TEST
1. Unplug the power cord and short the two prongs of the plug with a jumper wire. 2. Turn on the power switch. 3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screwheads, control shafts, handle brackets, etc.). "Note: Some exposed parts may be isolated from the chassis by design. These will read infinity. 4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be repaired and rechecked before it is returned to the customer.
Exposed metal part Ohmmeter Resistance = more than 5M ¶ (at DC 500 V)
FOR SERVICE TECHNICIANS
ICs and LSIs are vulnerable to static electricity. When repairing, the following precautions will help prevent recurring malfunctions. 1) Cover the plastic parts boxes with aluminum foil. 2) Ground the soldering irons. 3) Use a conductive mat on the worktable. 4) Do not touch IC or LSI pins with bare fingers.
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KX-F910BX
BATTERY CAUTION
CAUTION
Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacture. Discard used batteries according to following caution: Disposal of lithium batteries should be performed by permitted, professional disposal firms knowledgeable in state government federal and local hazardous materials and hazardous waste transportation and disposal requirements. Battery continues to have no transportation limitations as long as they are separated to prevent short circuits and packed in strong packaging. Commercial firms that dispose of any quantity of lithium cells should have a mechanism in place to account for their ultimate disposition. This is a good practice for all types of commercial or industrial waste. Recommend Type Number: CR2032 (BATT) CR2032 (BATT) Manufactured by MATSUSHITA Manufactured by SONY
AC CAUTION
For safety, before closing the lower cabinet , please make sure of the following precautions. @ The earth lead is fixed by the screw. A The AC connector is connected properly. B Wrap the AC lead around the core 3 times. (BOTTOM VIEW) Earth Lead (Ferrite Core) Earth Lead
AC lnlet
AC Lead
Screw
AC Connector
Washer
Earth Lead
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KX-F910BX
STANDARD BATTERY LIFE
INTRODUCTION
If your Panasonic battery is fully charged; While in use (TALK) While not in use (Stand-By) Up to about 2.5 hours Up to about 4 days
EBattery life may vary depending on usage conditions and ambient temperature. EClean the handset and the main unit charge contacts with a dry soft cloth once a month, or the battery may not charge properly. E Once the battery is fully charged, you do not have to place the handset on the main unit until the TALK/BATT LOW indicator flashes slowly. EThe battery cannot be overcharged.
PERSONAL SAFETY PRECAUTIONS
Be careful not to let your hair, clothes fingers, accessories, etc., become caught in any moving sections of the unit. These are driven by the carriage monitor, and the slow down gear, the paper feed roller, the pressure roller, the eject roller, the spur, the pick-up roller, etc., which are driven by the paper feed motor. These separation roller and document feed roller which are rotated by the document feed motor and a gear which makes the two rollers rotate. Also, the spurs are metal and sharply pointed. Be careful not to touch them accidentally by hand.
Separation roller gear Document rollers
Separation roller gear
Document feed gear
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KX-F910BX
SPECIFICATIONS
¡ Main unit
1. Applicable Lines: 2. Document Size: 3. Effective Scanning Width: 4. Printing Paper Size: 5. Effective Printing Width: 6. Transmission Time*: 7. Scanning Density: Public Switched Telephone Network Max. 216 mm (8 1/2 ) in width Max. 600 mm (23 5/8 ) in length 208 mm(8 3/16 ) 216 mm ~ max. 50 m (8 1/2 216 mm (8 /16 ) Approx.15 sec/page (Original mode) Approx.30 sec/page (G3 Normal mode) Horizontal : Vertical : 8 pels/mm (203 pels/inch) 3.85 lines/mm (98 lines/inch) -Standard mode 7.7 lines/mm (196 lines/inch) -Fine/Halftone mode 15.4 lines/mm (392 lines/inch) -Superfine mode 8. Halftone Level: 9. Scanner Type: 10. Printer Type: 11. Data Compression System: 12. Modem Speed: 13. Operating Environment: 14. Dimensions (H ~W ~D): 15. Mass (Weight): 16. Power Consumption: 64-level CCD image sensor Thermal printing Modified Huffman (MH), Modified READ (MR) 9600/7200/4800/2400 bps; Automatic Fallback 5-35 (41-95 °F), 45-85 % RH (Relative Humidity) ~13 3/8 ~10 7/16 ) Approx. 118 ~366 ~ 265 mm (4 21/32 Approx. 3.4 kg (7.5 lb.) Standby: Reception: Maximum: 17. Power Supply: Approx. 6.5W / Transmission: Approx. 16W Approx. 31W / Copy: Approx. 120W Approx. 40W
3
~164' roll )
220-240V AC, 50/60Hz
¡ Handset
1. Operating Environment: 2. Dimensions (H ~W ~D): 3. Weight: 4. Power Supply: 5. Frequency: 6. Security Codes: 5-35 (41-95 °F), 45-85 % RH (Relative Humidity) ~2 3/32 ~9 3/8 ) Approx. 37 ~55 ~ 238 mm (1 7/16 Approx. 200 g (0.4 lb.) Ni-Cd battery (3.6 V, 600 mAh) 814.0125-814.9875 MHz, 904.0125-904.9875 MHz (40 channels) 1,000,000
*Transmission speed depends upon the contents of the pages, resolution, telephone line conditions and capability of receiving unit. 15 second speed based upon CCITT No.1 Test Chart. ·Design and specifications are subject to change without notice.
OPTIONAL ACCESSORIES
Parts No. KX-A106 KX-A116 KX-A125 Description Standard Thermal Recording Paper Standard Thermal Recording Paper Super Thermal recording Paper (Like plain paper) Comment 216 mm ~ 30 m (8 1/ 2 with 25 mm (1") core 216 mm ~ 50 m (8 1/ 2 with 25 mm (1") core 216 mm ~30 m (8 1/ 2 with 25 mm (1") core ~98) roll, ~164) roll, ~98) roll,
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KX-F910BX
LOCATION OF CONTROLS
INTRODUCTION
Front View
Antenna
Spare battery cover Battery charger (beneath the cover)
Document entrance Paper stacker
Charge contacts Document feeder tray
Document guide(s)
SPA
RE C
HAR
GE CHA RGE
Microphone
CHARGE Indicator SPARE CHARGE Indicator Document exit
Front lid open button
Control panel
Dial keypad
HELP
Display panel MENU
RESOLUTION Direct call stations LOWER
DIRECTORY
ABC
DEF
1
GHI
2
JKL
3
MNO
4
PQRS
5
TUV
6
WXYZ
1 6 4 9
2 7 5 10
3 8
HELP
DIRECTORY
MENU
RESOLUTION
LOWER
7
TONE
8 0
9
AUTO RECEIVE
FAX
IN USE
LOCATOR/ INTERCOM
FLASH
REDIAL/PAUSE
MUTE
STOP
START/COPY/ SET
SP-PHONE
MIC
VOLUME SP-PHONE
RINGER
FLASH
MUTE
AUTO RECEIVE
VOLUME STOP
TONE
REDIAL/PAUSE
SP-PHONE
LOCATOR/INTERCOM IN USE indicator
START/COPY/SET
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KX-F910BX
Handset
Antenna
TALK/BATT (Battery) LOW/PROG (Program) Indicator POWER/RINGER Switch
TALK Button REDIAL Button TONE Button INTERCOM Button and Indicator PROGRAM Button
AUTO Button
PAUSE Button
FLASH Button Charge Contacts
FEATURES
General
Automatic paper cutter Answering machine interface 64-Level halftones resolution Large 165 ft. paper roll Help printout
900MHz Cordless
Fax activation from handset Intercom with 2-way paging 4-day battery life Sound ChargerTM technology 10-station speed dial Spare battery charger
Facsimile
Easy-to view LCD (16-character) Automatic document feeder (up to 15 sheets) Paper curl reduction technology Resolution: Standard/Fine/Super Fine/Half Tone Distinctive ring detection Super thermal paper Correct order reception printout
Integrated Telephone System
Speakerphone Telephone directory with alpha-search One touch dialer (10 phone-number) 50-station speed dialer
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KX-F910BX
CONNECTION
INTRODUCTION
Connect to "LINE"
Power cord
Telephone line cord
Single telephone line (RJ11C) Power outlet (220V, 50/60Hz)
Note: For additional equipment protection, we recommend the use of a surge protector. The following types are available; TELESPIKE BLOK MODEL TSB (TRIPPE MFG. CO.), SPIKE BLOK MODEL SK6-0 (TRIPPE MFG. CO.), SUPER MAX (PANAMAX) or MP1 (ITW LINX). You can connect an extension phone or a telephone answering machine to the unit after removing the stopper on the external telephone jack (EXT). When you operate this product, the power outlet should be near the product and easily accessible.
Helpful hint: If assistance is needed, press HELP . The unit will print a quick reference.
HELP
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KX-F910BX
INSTALLATION
1. Installing the recording paper
1
A
Open the back lid by lifting up the tabs located on the both sides. Install a recording paper roll in the main unit. Make sure that the shiny side of the paper is facing down and there is no stack, tape, or glue residue on the paper roll.
B Tab A
B
correct
incorrect
2
Insert the leading edge of the recording paper between the recording paper roller and the silver plate.
Recording paper roller
Silver plate
3
Close the back lid by gently pressing down on both ends.
Note: Only use the included roll of paper or specified recording paper, or else the print quality may be affected and/or excessive thermal head wear may occur. The beginning of some recording paper rolls are secured with glue or tape. Cut approximately 150 mm (6 inches) from the new roll of paper prior to installation.
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KX-F910BX 2. Installing the paper stacker
Install the paper stacker.
Paper stack
INTRODUCTION
3. Installing the antenna on the main unit
push down and twist the antenna onto the main unit. Keep the antenna .in an upright position to get the best reception .
4. Installing the spare battery cover on the main unit
Close the spare battery cover.
Spare battery cover
5. Installing the battery in the handset
1
Install the battery as shown observing the proper polarity.
+
Battery
2
Install the battery cover.
Battery cover
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KX-F910BX
COMPONENT LOCATIONS
Recording Paper Cover Separation Roller Document Feed Roller Target Glass Document Feed Roller Recording Paper Thermal Head Recording Paper Roller
Cutter
Mirror
Lens LED Array
Transmission Motor
Reception Motor
MAINTENANCE ITEM
1. OUTLINE
MAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS. 1) Periodic maintenance Inspect the equipment periodically and if necessary, clean any contaminated parts. 2) Check for breakdowns Look for signs of trouble and consider how the problems arose. If the equipment can still be used, perform copying, self-testing or communications testing. 3) Check equipment Perform copying, self testing and communications testing to determine if the problem originates from the transmitter, receiver or the telephone line. 4) Determine causes Determine the causes of the equipment trouble by troubleshooting. 5) Equipment repairs Repair or replace the defective parts and take appropriate measures at this stage to ensure that the problem does not recur. 6) Confirm normal operation of the equipment After completing the repairs, conduct copying, self testing and communications testing to confirm that the equipment operates normally. 7) Record keeping Make a record of the measures taken to rectify the problem for future reference.
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KX-F910BX
. 2-1. MAINTENANCE LIST
INTRODUCTION
NO. 1 2 3
OPERATION Document Path Rollers Recording Paper Roller Thermal Head LED Array Sensors
CHECK ITEM Remove any foreign matter such as scrap of paper. If a roller is dirty, clean it with a damp cloth, then let dry thoroughly. If the platen is dirty, clean it with a damp cloth, then let dry thoroughly. Remove the paper before cleaning. If the thermal head is dirty, clean the printing surface with a cloth moistened with denatured alcohol (alcohol without water), then let dry thoroughly. If the LED array is dirty, clean the glass with a dry soft cloth. Confirm the operation of the following sensors: recording paper sensor (SW273), Document sensor (PI302), Read position sensor (PI301), Cover open sensor (SW271), and JAM sensor (SW272). If the mirror and lens are dirty, clean them with a dry soft cloth. Replace the part. Be sure that all part's screws are tight.
REMARKS See page 16. See page 121.
4 5 6
See page 123. See page 16. See pages 77, 78.
7 8
Mirrors and Lens Abnormal, wear and tear or loose parts
2-2. MAINTENANCE CYCLE
No. 1 2 3 4 5 6 Items Separation Roller (Ref. No. 58) Separation Rubber (Ref. No. 23) Feed Roller (Ref. No. 49, 53) Target Glass (Ref. No. 171) Thermal Head (Ref. No. 59) Recording Paper Roller (Ref. No. 112) Cleaning Cycle 3 months 3 months 3 months 3 months 3 months 3 months Procedure See P. 16. See P. 16. See P. 16. See P. 123. See P. 121. Cycle 7 years (63,000 documents) 7 years (63,000 documents) 7 years (63,000 documents) 7 years (63,000 documents) 7 years (63,000 documents) 7 years (63,000 documents) Replacement Procedure See page 120. See page 120. See page 123. See page 121. Remarks
These values are only standard ones and may vary depending on usage conditions.
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KX-F910BX
CLEANING THE UNIT
Cleaning the inside of the unit
If misfeeding occurs frequently, or dirty patterns or black bands appear on a copied or transmitted document, clean the document feeder rollers, sub roller, rubber flap, white plate and glass.
1 2 3 4 5 6 7
Disconnect the power cord and the telephone line cord. Open the front lid by pressing the front lid open button. Clean the document feeder rollers and roller with a cloth moistened with isopropyl rubbing alcohol, and let dry thoroughly. Clean the rubber flap with a cotton swab moistened with isopropyl rubbing alcohol, and let dry thoroughly. Clean the white plate and glass with a soft dry cloth. Clean the front lid by gently pressing down on both ends. Connect the power cord and the telephone line cord.
Glass Sub Roller
White plate Rubber flap Document feeder rollers
Front lid open button
Caution: Do not use paper products (such as paper towels or tissues) to clean the inside of the unit.
Cleaning the charge contacts
Clean the main unit and the handset charge contacts with a dry soft cloth once a month, or the battery may not charge properly.
Charge contacts
Charge contacts
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KX-F910BX
1. TROUBLESHOOTING SUMMARY
1-1. TROUBLESHOOTING
After having confirmed the abnormal condition by asking the user, troubleshoot according to the instructions in Observe the following precautions when troubleshooting.
1-2. PRECAUTIONS
1) If there is trouble with the print quality or the paper feed, first check that the installation space and the print paper meets the specifications, that the paper selection lever/paper thickness lever is set correctly, and that the paper is set correctly without any looseness. 2) Before troubleshooting, first check that the connectors and cables are connected correctly without any looseness. Especially, if the abnormality occurs randomly, check very carefully. 3) When connecting the AC power cord with the unit case and checking the operation, exercise utmost care in handling the electric parts in order to avoid electric shock and short-circuits. 4) After troubleshooting, double check that you have not forgotten any connectors, left any loose screws, etc. 5) And always test to verify that the unit is working normally.
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KX-F910BX 2. USER RECOVERABLE ERRORS
If the unit detects a problem, the following messages will appear in the display.
DISPLAY MESSAGE
CAUSE AND REMEDY There is something wrong with the unit. The back lid is open. Close it.
CALL SERVICE CHECK COVER CHECK DOCUMENT
TROUBLESHOOTING GUIDE
The document is not fed into the unit properly. Reinsert the document. If the misfeeding occurs frequently, clean the document feeder rollers inside the unit. If the problem remains, adjust the feeder pressure. Memory (phone numbers, parameters, etc.) has been erased. Re-program. The receiving unit is busy or ran out of recording paper. Try again. The unit ran out of recording paper. Install a new recording paper. A recording paper jam occurred. Clean the jammed paper. The other fax machine does not provide the polling function. Check with the other party. The receiving unit is busy or ran out of recording paper. Try again. The document is jammed. Remove the jammed document. Attempted to transmit a document longer than 600 mm (235/8"). Press the STOP button and remove the document. Divide the document into two or more sheets and try again. A transmission error occurred. Try again. The unit is too hot. Let the unit cool down.
CHECK MEMORY NO RESPONSE OUT OF PAPER PAPER JAMMED POLLING ERROR REDIAL TIME OUT REMOVE DOCUMENT
TRANSMIT ERROR UNIT OVERHEATED
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KX-F910BX 3. DETAIL OF TROUBLESHOOTING
3-1. OUTLINE
Troubleshooting is to make quality and reliability recover by finding out the broken component and exchange or adjustment or cleaning. We have to find out symptoms and then arrange troubleshooting method. If it's tough to finding out just a broken component, we should so arrange that block or section are specified, for example "digital board" or image sensor". A claim tag from customer or dealer gives us many kinds of expression for same trouble. Because they are not technician or engineer. But we should carefully read it on our supposition comes from experience, and sufficiently test the function related to that tag. Returns from customer or dealers often have to claim tag. In this case we need to find out the symptoms. Therefore please test the unit following simple-check-list. A problem difficult to find out may lurk, so we need to test repeatedly, for example make copy 10 pages or receiving 10 pages,.........
3-2. STARTING UP TROUBLESHOOTING Find out the symptom and troubleshooting method
Power on.
plug the AC cord AC
Look at LCD LCD change faitnly LCD no reaction
LCD
good
12:00AM
No reaction means that power line is broken (short-circuit).
See digital board section. (See page 54)
See digital board section. (See page 54)
Already known symptom
Yes, I know
Not yet
Find out any symptom with check list (See page 22).
See table of troubleshooting item.
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KX-F910BX
3-3. TABLE OF TROUBLESHOOTING ITEMS
FUNCTION Unit doesn't work at all SYMPTOM No character or faint response in the LCD Skewed sending image Expanded print Image is distored Black or White lateral line on printing Page 30 Page 30 Page 27 Page 28 SEE THIS PAGE
Printing
TROUBLESHOOTING GUIDE
ADF (Auto Document Feeder)
No feed Paper jam Multiple feed Skew No feed Paper jam Multiple feed Skew Abnormal sound from the product
Page 23 Page 24 Page 25 Page 26 Page 23 Page 24 Page 25 Page 26 Page 31
Paper feed
Abnormal mechanical sound Cutter Power supply Operation panel Sensor
Can not cut the recording paper Voltage output is abnormal Keys are not accepted "PAPER JAM" is displayed "CHECK COVER" is displayed Can not fax communicate Error code is displayed Can not talk DTMF tone doesn't work Monitor sound, volume
Page 29 Page 72 Page 76 Page 77
Communication FAX, TEL (Analog board)
Page 33 Page 33 Page 68 Page 68 Page 68
Cordless
No link Battery won't charge No voice reception No voice transmission
Page 87 Page 85 Page 86 Page 86
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KX-F910BX
3-4. EASY-CHECK-LIST
FUNCTION FAX operation transmission receiving Copy operation FINE mode HALF TONE mode Monitor sound Telephone operation Ringer sound Dial operation Volume operation VOX detection Key check LED check Operation panel Sensor Clock External TAM Handset Transceiver/receiver Remote control Cordless operation Portable handset transmission/receiver Link Battery charge LCD check Sensor check
JUDGEMENT OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG OK ^ NG
REFERENCE
SERVICE CODE 815
SERVICE CODE 561 SERVICE CODE 557 SERVICE CODE 558 SERVICE CODE 815
gain correctly? OK ^ NG OK ^ NG OK ^ NG Change to FAX receiving by dialing (Refer to user mode #41 on page 52.) compare to your watch.
OK ^ NG OK ^ NG
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KX-F910BX
3-5. ADF (Auto document feed) SECTION (1) No document feed
In document setting, confirm that beep tone or not. NO Check the separation spring is distorting. NG Check the sensor lever movement.
OK
OK? YES
NG
Replace the sensor lever.
TROUBLESHOOTING GUIDE
Check the sensor and digital board. (pages 54 and 77) Cleaning of separation roller. ( page120 ) OK? NG NO Check the Motor and connector. OK END
NG
Replace the defective parts.
Does the separation roller rotate? YES Check the separation spring and pad? YES
NG OK? YES Replace the motor and connector.
NO NG
OK?
OK
Check the gear. END NG OK? Replace the gear.
Replace the separation roller unit. YES
NO NG
OK?
OK
END
YES
Replace the operation cover unit.
To digital board section. (page 54) NO Repair.
Is the phase signal from pins 73-77 of IC1 output?
Is the voltage at emitter of Q1 +24 V? YES Is the voltage at collector of Q1 +24 V? NO Is the voltage at pin 11 of IC7 less than 2V? YES Replace Q1.
Check power supply unit section. (page 72)
Is the solder at pins 7377 of IC1 OK? YES Replace IC7.
Replace IC7. NO OK? YES NO NO END OK? Replace motor
YES END
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KX-F910BX
(2) Paper JAM
Check feed route. Checks the paper jam for markings or objects stuck on the sheet.
OK? YES
NO
Cleaning or replace of defective parts.
OK? NG
OK
END
Cleaning the each rollers. (pages 120 and 121 ) NG Check each sensors movement.
OK?
OK
END
Confirms that the location tip of the read start sensor flag works smoothly.
OK? YES
NO
Repair or replace the sensor lever
OK? NG To Sensor section. (page 77)
OK
END
Check if the sensor reacts while the flag is moving.
Check each rollers mount.
Check the separation, feed and pinch rollers are attached correctly.
OK? YES
NO
Repair defective parts.
OK? NG
OK
END
Check the white plate. NG Replace the white plate.
Operation cover Document NG White Plate OK
Operation Board Cover
Fig. A
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KX-F910BX
(3) Multiple feed
Check separation pad. Confirms whether the pad is dirty or not and is attached correctly.
OK? YES
NO
Cleaning or replace the defective parts.
OK? NG
OK
END
TROUBLESHOOTING GUIDE
Check the separation spring is distorting.
OK? NG
OK
END
Cleaning the each rollers. (pages 120 and 121)
OK OK? NG END
Replace the separation pad, roller and pressure spring.
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KX-F910BX
(4) Skew
Document setting OK? Checks whether the document is folded or tape or staples are attached. Also checks whether a different size document is set at the same time.
NO OK? YES Check feed route.
Reset document. NG Checks whether there are same foreign objects, or missing parts.
OK?
OK
END
OK? YES
NO
Cleaning or replace the defective parts.
OK? NG
OK
END
Check the balance of both separation pressure springs. NO Replace the separation pressure spring. OK? NG OK END
OK? YES
Cleaning the each rollers. (page 120 and 121)
OK? NG
OK
END
Check the white plate. (Refer to Fig. A of page 24) OK
OK? YES Check CCD unit.
NO
Replace white plate. NG
OK?
END
OK?
NO
Repair or replace the defective parts.
OK?
OK
END
END
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KX-F910BX
(5) Image is distorted
Check feed route.
Checks if there are some foreign objects or missing parts. NO
OK? YES Cleaning the each rollers. (page 120 and 121)
Cleaning or repair the defective parts.
OK? NG
OK
END
TROUBLESHOOTING GUIDE
Check of relapse. NG
OK
END
Check white plate.
Confirms whether the plate strokes smoothly and if the white sheet is peeling.
OK? YES
NO
Replace the white plate.
OK? NG
OK
END
Check each rollers.
Check the separation, feed and pinch rollers are attached correctly.
OK? YES Check the each rollers dirty and scar.
NO
Repair defective parts. NG
OK?
OK
END
OK? YES
NO
Cleaning the each rollers. (page 120 and 121)
OK? NG
OK
END
To thermal head section. (page 84)
If expansion and contraction becomes within } 1.5%, this is standard and OK.
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KX-F910BX
(6) Black or white vertical lines appear.
Please copy the test chart.
Is line appear? NO Cleaning feed route.
YES
To thermal head section. (page 84) Please the white plate and target glass thoroughly. If the dirt cannot be removed, change the white plate.
Is line appear? YES
NO
END
Replace white plate, CCD unit etc.
OK? NG
OK
END
To digital board section. (page 54)
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KX-F910BX
(7) Can not cut the recording paper.
Check the cutter unit.
OK? YES Check the each sensor levers movement.
NG
Cleaning the cutter unit. (page 121)
TROUBLESHOOTING GUIDE
OK? YES
NO
Replace the defective parts.
Check the each sensor.
OK? YES
NG
Replace the defective parts.
Test the cutter movement.
OK? YES
NO
Check the connector, gear and arm.
Replace the motor, gear and arm.
Replace the cutter unit.
OK
OK? NG
OK? OK
NG
Replace the digital board. END
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KX-F910BX
(8) Skewed sending image
Check the setting of recording paper OK NG
Reset the recording paper.
Replace the recording paper roller.
(9) Expanded print
Check the front lid open button locked. OK NG Lock the front lid open button.
Cleaning the each rollers. (pages 120 and 121)
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KX-F910BX
(10) When copying or printing an abnormal sound is heard from the unit.
Alternant's source?
In the document convey -ance element.
A
(Next page)
TROUBLESHOOTING GUIDE
In the printing section.
Confirm the EXIT-GUIDE unit.
Remove the exit-guide toward you by hand and confirm if the carriage is moved by hand.
NO
Contact? YES
Fix/change the abnormal part.
Confirm if the thermal head, page guide, recording paper roller, etc. parts are attached correctly and fix or change the abnormal part.
Recording paper conveyance. Confirm the drive section.
Check the drive gear for damage, inserted foreign objects and also if the pendulum gear spring is attached correctly.
Abnormal? YES
NO
Check the other rotation sections, operations, oscillation sections and fix or change the abnormal part.
Fix or change the abnormal part.
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KX-F910BX
A
Confirm the document's conveyance drive section. Check the drive gear for damage, inserted foreign objects or abnormal installations.
OK? YES
NO
Fix clean or change the abnormal part.
Does it recur? YES
NO
END
Re-grease
Do not apply large amounts to other parts. (Refer to page 206)
NO Does it recur?
YES
END
Change the gear and gear chassis.
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KX-F910BX
3-6. COMMUNICATION SECTION
Communication connection (modem) (Print defect in FAX communication) Symptom Referring to the printer General Classification Print a communication Hint TEST : If only the print communication is NG and other printing is OK, there is a high possibility that there is a problem in the digital board's modem and analog board buss. @ Paper is not output The transmitted sending side's signal was not received. If the DTMF tone is not heard, change the IC11 modem. If the DTMF tone is heard, there is a problem in the signal pass route. Another problem Confirm the repair method in the DEFECTIVE FACSIMILE SECTION. (Refer to page 34)
TROUBLESHOOTING GUIDE
A communication error has arose. A The picture is out of order B The picture was cut off halfway
Refer to the error code (Refer to page 41)
The sending side's signal was cut during receiving. Communication error causes : 1. User (unit) 2. Circuit condition 3. Other party (unit) It is possible that there are other causes than the user. Try communication in redial a few times. Also, try communication speed in 4800 bps or lower.
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KX-F910BX
(1) Defective facsimile section 1 Transmit problem
TX Problem
USER STOPPED
Message on LCD
STOP key was pressed? NO
YES
ENeed to service. EOperation panel section.
(Refer to page 76) YES Paper jam? NO YES
No problem
Only some of document go through? NO
ADF section. (Refer to page 23)
All of document go through, but communication result is error. NO No feed at all even one page.
YES
Press down READ SENSOR gently, and release it to be come up immediately. OK
NG
Clean up separation roller using damp cloth. And try again. (Rubbing alcohol) NG Replace separation roller with new one.
ADF section. (Refer to page 23)
Need to service ECheck, sensor is installed properly?
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KX-F910BX
TX Problem
Transmit Error
Message on LCD
Pre-Feeding of document? YES
NO
YES Using auto dial to send?
TROUBLESHOOTING GUIDE
Doesn't start TX (Doesn't start feeding?) YES
NO OK
NO
Document goes through.
EIncrease "596:Transmit @level set" from -10 dBm @to -5 dBm or some.
NG
Do you press START key immediately after dialing?
NO
YES
Ask other party, changing RX equalizer & increasing TX level.
Decrease TX level from -10 dBm to - 15 dBm or some.
Check other party's machine. (Paper out, Auto answer off...etc.)
NG OK Confirm sent image on RX side has many errors?
EIncrease "596:Transmit @level set" from -10 dBm @to -5 dBm or @some. or EDecrease "596:Trans@mit level set" from -10 @dBm to -12 dBm or @some.
OK
NG
EDecrease "596:Trans@mit level set" from -10 @dBm to -15 dBm or @some.
Check modern TX level.
Ask RX party, increase a parameter of RX error line value to more than. (No available)
Change "594: Oversea DIS detection" to "Detect at the 2nd time".
Change "717:Transmit speed select " to 7200,4800 or 2400 bps.
Confirm "592:CNG TX select" to "ALL".
Ask other party, increasing TX level.
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KX-F910BX
2 Receive problem
Confirm below before starting troubleshooting. ERecording paper is installed properly? RX problem
Can RX something anyway? NO
YES YES
Many errors on image? No: Looks OK
NO FAX ring count (#07)is 2,3 or 4? YES Change FAX ring count to 1.
Increase "595: RX error limit value" to some.
Change "718:Receive speed select" to 7200, 4800 or 2400 bps.
Ask sender below change. EIncrease "596:Transmit @level set"
Increase "593: Time between CED & 300 bps" to some value.
Error code No. 68 (Echo)? YES Decrease "596:Transmit level set" from -10 dBm to 12 dBm or some. NO
Change "718:Receive speed select" to 7200, 4800 or 2400 bps.
Ask sender below change. EIncrease TX level. EChange TX equalizer.
Confirm below before starting troubleshooting.
CHECK THERMAL PAPER CHECK COVER OVERHEATED (doesn't return automatically, COVER OPEN, etc., it is necessary to reset) PAPER JAM
Please refer to "2. User Recoverable Errors" (Refer to page 19) for the above items. Also, when it actually becomes a hardware deformity, please check each sensor.
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KX-F910BX
3 Unit can copy, but can not transmit/receive
Connect the unit to the loop simulator. Switch : TX side T-R : Connect oscilloscope
TROUBLESHOOTING GUIDE
Modem test start (TEST CODE NO. 554)
Is the four signal at Tip-Ring output? NO YES
Connect the PBX and TEL. line and off-hook.
Is the signal at pins 44 of IC11 output? NO Check solder at the pin 8 of IC10 and Q8. NO Is the voltage at pin 8 of IC10 24 V? YES YES
Check the trace between pins 44 of IC11 and Tip-Ring.
NO Is the signal at pin 45 of IC11 dial tone input? YES Replace IC11.
Check the trace between T1 and pin 45 of IC11.
Check the solder at pins 116 of IC1. OK Replace IC11.
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KX-F910BX
C Unit can copy, but can not transmit/receive long distance or international communication
The following 2 causes can be considered for this. Cause 1: The other party is executing automatic calling, the call has been received by this unit, and this time until response with a CED or DIS signal has been too long. (In almost case, this unit detects CNG signal and can respond to CED or DIS.) (According to the ITU-T standard, the communication procedure is stopped when there is no response from the other party within 35sec, so that the other party releases the line.)
(Time until Response) Line Connection Time False ring
3 sec
1 sec
Dial Ringing Time (about 4 sec/ring)
False ring Send Time & CNG Detect Time (about 17 sec depending on the setting user program mode #30) Max 35 sec
CED Signal send
DIS Signal send
75 msec Other party FAX machine dials
Other party FAX machine detects the DIS signal.
(Cause and Countermeasure) As shown in the above chart, the total handshaking time must be reduced, but because of the long distance connection and linking of several stations, the line connection time can not be reduced. Accordingly, the following countermeasures should be tried. (A) The TEL/FAX DELAYED RING count should be 1. (user parameter: code No. 06) (B) As the count of 35 sec is started directly after dialing or directly after the START button has been pressed for models with a START button, the other party should be called manually, if possible. Another possibility is entry of two pauses at the end of the auto dial number of the transmission side, In this way, the start time for the count can be delayed by 2 pauses (about 10sec). Cause 2: Erroneous detection because of echo or erroneous detection because of an echo canceler.
FAX 1 S1
FAX 2
Station 1
S2
Station 2
2 Line Type
The sea bottom cable or satellite communication path. (4 Line Type)
2 Line Type
(Echo/Echo Canceler) The signal from FAX1 reaches FAX2 via the stations 1 and 2, but the reflection signal at station 2 also returns via station 1 (echo). As the distance between station 1 and station 2 is long, the echo returns to FAX 1 max. 600msec after transmission, so than there is the possibility that this signal is detected erroneously as the signal from FAX2 and that trouble is caused. In the case of a normal call, there is also the possibility that the echo of the own voice will make the call difficult to understand. For this reason, each station (station 1, station 2) attaches echo cancelers (S1, S2) in case of international lines or long distance lines. For the echo canceler, the level of the transmission signal from FAX 1 is compared with the level of the reception signal from the FAX2, and when transmission signal is larger, S1 is closed, while S2 is opened when it is smaller. In other words, with transmission from FAX1, S1 is closed and S2 is open, so that the echo does not return to FAX1.
| 38 |
KX-F910BX
(Cause and Countermeasure) (Cause A) When the training signal is transmitted from FAX1 during the communication procedure at the time of transmission from FAX1 to FAX2, there is a delay until the echo canceler operates and S1 is closed, so that a part of the head of the training signal may drop out, normal reception by FAX2 may not be possible, and transmission may not be started. (Countermeasure A) When the international line mode becomes ON service mode (code No. 521), a dummy signal is attached to the head of the training signal to prevent this problem. As this normally is ON, it is necessary to reconfirm that this has not becomes OFF. When the international mode is switched OFF, the transmission side will try the training signal three times at each speed (9600BPS, 4800BPS and 2400BPS), and in case of NG, it will drop the speed by one rank (fall-back). When the international mode is switched ON, each speed will be tried only twice. In other words, the slower speed with fewer errors are reached more easily. This is done as the line conditions may deteriorate and the picture may be disturbed more easily during communication in case of international lines or long distance communication, even when the training has been OK. The default value is ON as preference is given to clearer pictures rather than speed. (Cause B) The echo canceler operation is stopped with a signal of 2100Hz (i.e. S1 and S2 become ON). Accordingly, when FAX1 has executed automatic reception, a CED signal is output, and if this signal should be 2100Hz, S1 and S2 will become ON. Then the echo of the DIS signal output afterwards may be received and FAX1 may execute erroneous operation, preventing start of communication. (Countermeasure B) In service mode, the CED signal frequency is set to 1100 Hz (code No.520) or the time setting between the CED signal and the DIS signal is set from 75msec to 500msec in service mode (code No.593). This is done because the echo canceler operation stop mode is cancelled with an interval of 250msec or more. (Cause C) KX-F910BX shall be assumed for FAX1 and a set of a different company shall be assumed for FAX2. In case of transmission from the KX-F910BX to FAX2, FAX2 executes automatic reception and transmits a CED signal (2100 Hz), followed by a DIS signal. As here the echo cancelers stops as described in cause B, the echo of the DIS signal returns to FAX2. On the other hand, the KX-F910BX detects the DIS signal and transmits a DCS signal. In other words, it is possible that the echo of the DIS signal and the DCS signal transmitted from the KX-F910BX reach FAX2 one after the other, FAX2 executes erroneous detection, and communication are not started. (Countermeasure C) When international DIS detection setting is made effective in service mode (code No.594), the KX-F910BX does not respond to the first DIS signal and returns a DCS signal only for the second DIS signal. In other words, there is an interval of 250msec between transmission of the first and the second DIS signal, so that the echo cancelers operation recovers and no echo is generated for the second DIS signal. Note: When the other FAX does not respond with a DCS signal after DIS signal transmission, the DIS signal is transmitted three times for trial.
TROUBLESHOOTING GUIDE
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KX-F910BX
Summary: Long distance and international communication operation
SYMPTOM
COUNTERMEASURE 1. The TEL/FAX DELAYED RING count should be 1. (user parameter: code No. 06) 2. If possible, manual transmission should be made from the transmission side. 3. If possible, two pauses should be inserted at the end of the auto dial number of the transmission side. 4. If possible, the Function Selector Switch should be switched to FAX. 1. Confirm the international line mode ON. (service mode: code No. 521) 2. International DIS detection setting is made effective. (service mode: code No. 594) 1. The time setting between the CED signal and the DIS signal is set to 500msec. (service mode: code No. 593) 2. The CED frequency is set to 1100Hz. (service mode: code No. 520)
Does not receive in automatic mode.
Does not transmit.
Does not receive.
D Unit can copy, but the transmission and reception image is incorrect
(Long distance or international communication operation) This depends widely on the transmission and reception capability of the other FAX set and the line conditions. The countermeasures for this set are shown below. Transmission Operation: The transmitting speed is set to 4800BPS (service mode: code No. 717) or select overseas mode. (Individual correspondence according to the other set is desirable.) Reception Operation: If 80% or more of the reception should be incorrect, set the receiving speed to 4800BPS. (service mode: code No. 718)
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KX-F910BX
(2) Communication error functions
@ Operation:
1. Press the MENU button 3 times. 2. Press the START/SET button and ¥ button 4 times. 3. Press the START/SET button. 4. Print out.
A Error code table:
CODE RESULT PRESSED THE STOP KEY DOCUMENT JAMMED NO DOCUMENT PRINTER OVERHEATED PAPER OUT THE COVER WAS OPENED PAPER JAMMED NO RESPONSE 41 42 43 44 46 48 49 50 51 53 54 57 58 59 64 68 70 72 FF COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR NO RESPONSE COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR COMMUNICATION ERROR MODE TX & RX TX TX RX RX TX & RX RX TX TX TX TX TX RX RX RX RX RX RX TX RX TX RX TX TX RX RX RX TX & RX SYMPTOM Communication was interrupted with the STOP button Document paper is jammed No document paper Thermal head is overheated Out of thermal paper Cover is open Recording paper is jammed Transmission is finished when T1 TIMER is expired DCN is received after DCS transmission FTT is received after transmission of 2400BSP training signal No response after post message is transmitted three times RTN and PIN are received No response after FTT is transmitted No post message RTN is transmitted PIN is transmitted (to PRI-Q) PIN is transmitted Reception is finished when T1 TIME is expired DCN is received after transmission of NSC and DTC DCN is received after DIS transmission 300BPS error DCN is received after FTT transmission DCN responds to post message Polling is not possible No response at the other party after MCF or CFR is transmitted DCN is received after CFR transmission Carrier is cut when image signal is received Modem error 1 2 3 4 5 6 7 8 8 8 9 10 11 12 13 14 15 13 13 16 12 Countermeasure
TROUBLESHOOTING GUIDE
TX=TRANSMISSION
RX=RECEPTION
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KX-F910BX
3 Countermeasure
1 Transmission is finished when T1 TIMER is expired.
Turn ON the FAX monitor function and transmit the data to the same receiver.
NO
Is FAX signal sound (DIS) heard?
YES
Is communication OK?
NO Confirm if the receiver's FAX machine is set to the reception mode or answering machine's message is on. Confirm service parameter and compatibility of both caller's and receiver's FAX machines. 2
YES Confirm the receiver's FAX machine was set to the reception mode when the previous communication was NG.
DCN is received after DCS transmission.
Confirm the receiver's FAX machine.
NO
Is it the same brand as our products? YES
NO
Is the password check mode set? (Have the receiver's parameter list printed.) YES
Is the receiver's FAX machine is the "out of paper or mechanical error" status?
NO
Ask the receiver to cancel password of the receiver's FAX machine or set the caller's password corresponding to the receiver's and transmit the data again.
YES Ask the receiver to set the receiver's FAX machine to the receivable mode and transmit again. Confirm service parameter and compatibility of both caller's and receiver's FAX machines.
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KX-F910BX
3
FTT is received after transmission of 2400BPS training signal.
Perform communication test using the LOOP simulator.
YES
Is "Fall back" executed from 9600BPS? NO 3.1
TROUBLESHOOTING GUIDE
Modem test (TEST CODE NO.554)
(1) Raise the level of transmission. (Do not raise the level above the standard of each country. If the communication should be OK at the level beyond the standard, it is attributable to line condition or the receiver's machine sensitivity condition.) If no effect is obtained. (2) Slow down the transmission start speed and taransmit to the receiver again.
Is communication OK?
YES
3.2
NO Ask the receiver to perform FAX communication from the receiver to the caller. If this error frequently occurs at the receiver, perform transmission in the above-mentioned mode on the receiver.
YES Is communication OK?
NO Perform voice communication with the receiver. End
Check if the line is not interrupted by noises or in the cross talk. If it is not, wait until the line is satisfactory for correct communication.
| 43 |
KX-F910BX
4
No response after post message is transmitted three times.
Inquire the receiver if the caller's document is facsimiled correctly.
Is the data facsimiled correctly? NO YES Ask the service section of the receiver's FAX machine to confirm the machine condition. 5 RTN and PIN are received. 3.2
3.1
6
No response after FTT is transmitted.
Perform communication test using the LOOP simulator and check the machine reception condition.
Modem test (TEST CODE NO.554)
YES
Is FTT sent from the receiver?
6.1 NO : No problem on the machine hardware. Perform voice communication with the NG caller.
Check if the line is not interrupted by noises or in the cross talk, If it is not, wait until the line is satisfactory for correct communication.
| 44 |
KX-F910BX
7 No post message
Turn ON the FAX monitor function and have the receiver transmit the data.
7.1 Is FAX signal sound (post message) heard after the image data is received? YES (Receive Complete) NO NO
TROUBLESHOOTING GUIDE
Ask the service section of the sender's FAX machine for examination. YES
Does an error (error code=48) occur still?
Try again.
Decrease the RX speed.
Does an error lines exist on received document? YES
NO 7.1
8
RTN is transmitted. PIN is transmitted (to PRI-Q). PIN is transmitted.
Perform communication test using the LOOP simulator and check the machine reception condition.
Is the data facsimiled correctly? YES Turn ON the FAX monitor function and have the receiver in question transmit the data again.
NO
Modem test (TEST CODE NO.554)
Does the communication error "code 49" occur? NO End
YES 6.1
| 45 |
KX-F910BX
9
Reception is finished when T1 TIME is expired.
Perform communication test using the LOOP simulator and check the machine reception condition.
Modem test (TEST CODE NO.554)
NO
Is the data facsimiled correctly? YES Turn ON the FAX monitor function and have the receiver in question transmit the data again.
YES Is communication OK?
NO
NO
Is FAX signal sound heard after the image data is received? YES
End
Confirm if the receiver's FAX machine was set to receivable mode.
6.1
| 46 |
KX-F910BX
10
DCN is received after transmission of NSC and DTC.
Confirm if a mechanical trouble occurred, e.g. transmission was interrupted or document was out of place, on the receiver side (being polled).
TROUBLESHOOTING GUIDE
Was it a mechanical error as mentioned above?
NO
YES Ask the receiver to set the poll mode again and perform polling. Ask the service section of the receiver/s FAX machine for examination.
11
DCN is received after DIS transmission.
Confirm if a mechanical trouble occurred, e.g. the caller interrupted the transmission.
Was it a mechanical error as mentioned above?
NO
YES
Have the caller transmit the data again.
Ask the service section of the caller's FAX machine for examination.
12
300BPS error Modem error
Check the hardware of the peripherals of the modem.
| 47 |
KX-F910BX
13
DCN is received after FTT transmission. No response at the other party after MCF or CFR is transmitted. DCN is received after CFR transmission.
Confirm if a mechanical trouble occurred, e.g. the caller interrupted the transmission.
NO Was it mechanical error as mentioned above? YES Ask the caller to transmit the data again. 6.1
14
DCN responds to post message.
Confirm if a mechanical trouble occurred, e.g. the receiver interrupted the reception.
YES Was it a mechanical error as mentioned above? NO
Perform voice communication with the NG receiver.
Ask the receiver to set the receiver's FAX machine to the receivable mode and communi cate again.
Check if the line is not interrupted by noises or in the cross talk. If it is no, wait until the line is satisfactory for correct communication.
| 48 |
KX-F910BX
15
Polling is not possible.
Confirm if a mechanical trouble occurred, e.g. transmission was interrupted or document was out of place, on the receiver side (being polled).
TROUBLESHOOTING GUIDE
NO Was it mechanical error as mentioned above? YES Ask the receiver to set the Poll mode again and perform polling. Ask the service section of the receiver's FAX machine for examination.
16
Carrier is cut when image signal is received.
Perform communication test using the LOOP simulator and check the machine reception condition.
Modem test (TEST CODE NO.554)
YES
Is carrier cut?
NO 6.1
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KX-F910BX
(3) Remote programming While a user is talking on the phone, a technician can set the function parameters of customer's unit from service center. 1. A call comes in service center. 2. A technician gets a claim from a customer. 3. He says to the customer "Please change to the speaker phone if talking with the portable handset. And then please press MEMU button and wait for a moment". 4. The technician dial `9,0,0,0, ' from his telephone. The customer's unit is set REMOTE PROGRAMMING MODE and generates remote beep sound. He hears "Piiii' (one long beep). 5. He presses 3 digits code of service function written in service manual by dial keypad. (See page 52) And presses (set). The customer's unit receives the service code. He hears "Piiii" (one long beep). 6. He presses 1~3 digits value of function written in service manual by dial keypad. And presses (set). The customer's unit receives the service value. He hears "Pii Pii" (double short beeps). 7. Then he can repeat from step 5. 8. When a technician wishes to end the REMOTE PROGRAMMING MODE, he says to the customer, "Please press the STOP button to exit the REMOTE PROGRAMMING MODE. And then press the SP-Phone button". Note: 1) To enter the REMOTE PROGRAMMING MODE is necessary in Step 3. Because the unit can not easily enter the REMOTE PROGRAMMING by DTMF signal from the other party. 2) If he presses wrong buttons when his operation is in step 5 or 6. he hears "Pii Pii Pii" (triple short beeps). Then he can repeat from the same step. 3) When customer's unit finishes transmitting a list (No. 991,992, 994,999), he can have a voice conversation. And he can continue the REMOTE PROGRAMMING MODE. 4) When customer's unit start transmitting a list (No. 991,992, 994,999), he does not hear "Pii Pii" (double short beeps). The unit generate CNG sound.
| 50 |
KX-F910BX
1 Summary of remote programming mode
START Customer press STOP key and press the SP-PHONE button.
Enter the REMOTE PROGRAMMING ID 9,0,0,0 END
TROUBLESHOOTING GUIDE
REMOTE PROGRAMMING MODE "Piiii"
Press mistaken key "Pii Pii Pii"
Press 3 digits code of service function and then press (set)
Press mistaken key "Pii Pii Pii"
SERVICE SETTING MODE "Piiii"
Press 1~3 digits value of function and then press (set)
SETTING THE FUNCTION "Pii Pii"
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KX-F910BX
A Program mode table Code 001 002 003 004 005 007 008 009 012 021 022 023 024 025 030 031 039 040 041 046 070 080 501 502 503 520 521 522 523 544 550 551 553 554 555 556 557 558 559 560 561 562 563 570 571 572 573 Function Set date and time Your logo Your telephone number Print transmission report Auto receive mode FAX ring count Manual receive mode TEL/FAX delayed ring Remote TAM activation Logo position Journal auto print Overseas mode Junk mail prohibitor Delayed transmission Silent FAX recognition ring Ring detection LCD contrast Silent Detection Remote FAX activation code Friendly reception FAX pager Set default Pause time set Flash time set Dial speed set CED frequency select International mode select Auto standby select Receive equalizer select Document feed position adjustment value set Memory clear ROM check Monitor on FAX communication select Modem test Scanner test Motor test LED test LCD test Document jam detection select Cutter select Key test Cutter test CCD position adjustment value set Break % select ITS auto redial time set ITS auto redial line disconnection time set TEL ring count Set Value mm/dd/yy hh:mm --------1:ERROR/2:ON/3:OFF 1:EXT TAM 2:FAX 1 to 4 rings 1:TEL 2:TEL/FAX 1 to 4 rings 1:ON/2:OFF 1:OUT/2:IN 1:ON/2:OFF 1:ON/2:OFF ON/OFF ON/OFF 3 to 6 rings 0:OFF/1:A/2:B/3:C/4:D NORMAL/DARKER 1:ON/2:OFF ON/OFF 1:ON/2:OFF ON/OFF YES/NO 001~600 ~ 100msec 01~99 ~10msec 1:10/2:20pps 1:2100/2:1100Hz 1:ON/2:OFF 1:ON/2:OFF 1:ON/2:OFF 01~99 step "START" push "START" push 1:OFF/2:P-B/3:ALL "START" push "START" push "START" push "START" push "START" push 1:ON/2:OFF 1:ON/2:OFF Press any key "START" push 00~30 mm 1:61/2:67% 00~99 001~999 01~99 Default ------------ERROR FAX 1 ring TEL 1 ring OFF/ID=11 OUT ON OFF OFF/ID=22 OFF 3 rings OFF NORMAL ON ON/ID= ON OFF NO 050 70 10 2100 ON ON OFF ------------OFF --------------------ON ON ------------61% 014 030 15 Remote setting NG NG NG OK OK OK OK OK NG OK OK OK NG NG OK OK NG OK NG OK NG NG OK OK OK OK OK OK OK OK NG NG OK NG NG NG NG NG OK OK NG NG OK OK OK OK OK
| 52 |
KX-F910BX
Code 590 591 592 593 594 595 596 700 701 702 717 718 719 721 722 732 763 771 815 844 909 991 992 994 999 Function FAX auto redial time set FAX auto redial line disconnection time set CNG transmit select Time between CED and 300 bps Overseas DIS detection select Receive error limit value set Transmit level set Ext. TAM OGM time Silent detect time Ext. TAM ring count Transmit speed select Receive speed select Ringer off in TEL/FAX mode Pause tone detect Redial tone detect Auto disconnect cancel time Friendly reception CNG detection select T1 timer Sensor check Original setting Handset remote FAX ACT Transmit basic list Transmit advanced list Transmit journal report Transmit service list Set Value 00~99 001~999 1:OFF/2:ALL/3:AUTO 1:75/2:500/3:1s 1:1st/2:2nd 001~999 -15~00dBm 01~99 sec. 01~99 x 100 msec 0~9 1:9600/2:7200/3:4800/4:2400bps 1:9600/2:7200/3:4800/4:2400bps 1:ON/2:OFF 1:ON/2:OFF 1:ON/2:OFF 1:350msec/2:1800msec/3:OFF 1:10S/2:20S/3:30S 1:35sec/2:60sec "START" push 1:NORMAL/2:LIGHT/3:DARKER 0~9, 2~4 digits 1:START 1:START 1:START 1:START Default 05 045 All 75ms 1st 100 -10 10 50 5 9600bps 9600bps ON ON ON 350msec 20S 35sec ----NORMAL ----------------Remote setting OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK OK NG OK NG OK OK OK OK
TROUBLESHOOTING GUIDE
OK : Can set the valve by remote programming featureor print list NG : Can not set the valve.
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KX-F910BX
3-7. DIGITAL BOARD SECTION
How to fix the digital board that don't start up the unit. (1) OVER VIEW If you see a human being down on the street, what will you do? You may talk to him. But if he doesn't answer, you check his breath or pulse, don't you. Why do we check them? Breath or pulse, we needs must do it to live. We start to check from most basic things to live. Checking (or repair) the Board doesn't work is similar to it. We should start to check from most basic things to work. What is most basic to work? 1. POWER SUPPLY (+5V, +24V) 2. SOLDERING of ICs 3. OSCILLATOR (CLK) (SYSTEM CLK: 24MHz, MODEM CLK: 24MHz) 4. RESET 5. SIGNALS ADDRESS BUS (A0~A15) DATA BUS (D0~D7) READ, WRITE (RD, WR) CS (Chip select) (ROMCS, MDMCS) "Board doesn't work" means that board has any problems in these most basic things. This document is going to explaining the order of repair with flow chart at first and then explaining individual point of those items in detail.
--- MEMO --MDM: CLK: ROM: RAM: RTC: adr: RD: WR:
modem (modulator/demodulator) clock read only memory random access memory (SRAM: static RAM. DRAM: dynamic RAM) real time clock address read write
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KX-F910BX
(2) CHECK LCD ON THE MACHINE
If the digital board had broken, machine does not react at all and black square will be on the LCD. There are 5 processes to display some letters (12:00 AM) on LCD.
If processes were not complete, black square will be on the LCD.
TROUBLESHOOTING GUIDE
LCD 1. POWER ON NG If defective is in the power line, LCD doesn't change.
LCD 2. OSC NG black square
LCD 3. RESET NG black square
LCD 4. Read the data in the ROM (program start) NG black square
LCD 5. Make peripherals initial NG black square
LCD 12:00 AM
Monitoring (KEY IN)
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KX-F910BX
(3) PROCEDURE FROM OUR EXPERIENCE TO FIX
plug the AC cord
Power ON
Look at LCD
No reaction LCD
Check power line (Refer to page 58)
Black squares or any charactor come. LCD
No reaction means that Power line is broken (short-circuit).
Turn over and take bottom cover off. BE CAREFUL! GND Oscilloscope This is the TEST with AC power on. AC
Is pin 101 of ASIC 5V? not 5V RESET volatge RESET is fixed at 5V 5V
like a wave form below
Check the voltge of testing points. (Refer to next page)
Check detail. (Refer to page 58)
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KX-F910BX
Pleas check the status (voltage) of pin 56, pin 58 and pin 60 of IC1. These status may tell you defective point. (Please use the ROM for IC status checked) [Ref No. EC22]
Oscilloscope
or
TESTER
TROUBLESHOOTING GUIDE
GND
AC status (voltage) of check points This could be defective point pin 56 SRAM IC3 MODEM IC11 OPE.PANEL IC301 Thermal Head TEMP. 0v IC1 (ASIC) pin 58 0v pin 60 5v IC3,IC1 (pin 48) Please check here!
0v
5v
5v
IC11 (pin 95, pin 116),RA1,RA2
5v
0v
0v
IC1 (pin 14~17, pin 20) R79~R86 R47~R49, C37~C39 IC1 ( pin 38, pin 49) Note: If the thermal head temperature is abnormal, "CALL SERVICE" will appear in the dispaly.
5v
0v
5v
Cordless ALL OK
0v 0v
5v 0v
0v 0v
Change the Cordless Base unit P.C.B.
Please check soldering and conduction of these components. If it is no problem, replace ICs.
If you still have problem, please go to "3-1 check detail" (page 58).
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KX-F910BX
(1) CHECKING DETAIL
Please check the soldering first, it comes from our experience.
Checking soldering Big ICs and resistor arry IC1 RA1, RA2 IC3 RA3, RA4 IC11 Check soldering (Refer to page 67)
Visual check soldering.
OK Checking soldering SYS. CLK (pin 96 of IC1) 12 MHz? OSC wave form. (Refer to page 59)
5V OV
CPUCLK XTEST
Check wave form on the ICs and BUS line. (Refer to page 60)
Replace IC.
(2) POWER SUPPLY (5V, 24V)
@ With AC power off Please check Short Circuit of power line. 1. 5V line at CN1 between pin 6 and 4 pin, is it short? 2. 24V line at CN1 between pin 2 and 3 pin, is it short? A With AC power on Please check voltage of power line. 1. 5V line at CN1 between pin 6 and 4 pin is 5V? 2. 24V line at CN1 between pin 2 and 3 pin is 24V?
| 58 |
KX-F910BX
(3) OSCILLATOR (CLK) SYSTEM CLK: 24 MHz, MODEM CLK: 24 MHz
24 MHz SYSTEM CLK (pin 96 of ASIC:IC1) · This point is 1/2 the MHz of the SYSTEM CLK 12MHz.
5V 50 nsec/div 0V
TROUBLESHOOTING GUIDE
24 MHz MODEM CLK (pin 70 of MODEM:IC11) · This point is 1/2 the MHz of the MODEM CLK 12MHz.
5V 50 nsec/div 0V
(4) RESET RESET signal makes system initial state just after power on. If RESET signal is defect, please check IC11 and components that is connected to these ICs.
Check reset voltage 5v? power on power line 5V 5v
RESET (pin 101of IC1 : ASIC) reset time apx. 175msec
5v
NG
0v
NG 4.3msec This wave form means another problem, it is not caused by RESET circuit Please see the item : "CHECK WAVE FORM"
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KX-F910BX
(5) CHECK WAVE FORM This check needs 4 channels digital storage oscilloscope higher than 400 MHz.
START
Any wave form on the line . (AD, D0, ROMCE, RD)
NO
Check again power line, oscillation (12 MHz), RESET?
If still no reaction replace ASIC and check again.
YES
Refer to page 61 Does wave form on A0, D0, ROMCE, RD seem to good? YES Address to SRAM or MODEM may unsuceed. (Refer to pages 63~65)
NO
Refer to page 62 Active term of ROMCE is longer than normal? YES Is RESET coming frequently? (every 4 msec) YES Watch dog error frequently makes RESET active because address or data is confused by any problem on Address, Data bus.
NO
NO
RESET is no problem
Check operation panel I/F Check the lines that connect to CN5 from ASIC (IC1). If no problem on the lines replace ASIC (IC1).
Address to SRAM or MODEM may unsuceed.
Check bus line short circuit open voltage
Refer to pages 63~65.
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KX-F910BX
Let's observe the wave form to fix the defective IC. Please observe A0, D0, ROMCE, RD by using digital oscilloscope. Below graph show you the wave form that is observed when unit (board) is working correctly. Both graph are good wave. Wave form is rapidly changing by one (like below graph). Because many kind of data or program are rapidly executed, so you can see some kind of wave forms that is seem to below graph. name A0 D0 ROMCE RD SRAMCS: MDMCS location : pin 132 of ASIC (IC1) : pin 131 of ASIC (IC1) : pin 22 of ROM (IC2) : pin 24 of ROM (IC2) : pin 20 of SRAM(IC3) : pin 54 of MODEM(IC11)
TROUBLESHOOTING GUIDE
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 500ns/div Length 100 W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T -13.75µs V 5.0 V Marker 2 T 7.50µs V 0.2 V T 1/ T V 21.25µs 47.06kHz -4.8 V
Time/div W1 500ns A0 W2 5µs Position W1 7.25µs W2 25.00µs Time Base Internal External
D0
ROMCS
RD OK -40.0V 7.25µs Roll Off
Time Time Base Internal
12.25µs
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 500ns/div Length 100 W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T -13.75µs V 5.0 V Marker 2 T 7.50µs V 0.2 V T 1/ T V 21.25µs 47.06k Hz -4.8 V
Time/div W1 500ns A0 W2 5µs Position W1 -17.75µs W2 -24.80µs Time Base Internal External
D0
ROMCS
RD OK -40.0V -17.75µs Roll Off
Time Time Base Internal
-12.75µs
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KX-F910BX
The graphs below show you the wave form that is observed when unit (board) doesn't work. (A3 is intentionally opened at pin 135 of ASIC in this board.) Please check that active (low level) term of ROMCE is longer than good wave form, **ROMCE is active (low level) excepting RESET is active.** and RESET is frequently coming on every 4 msec. In the case of this wave form ASIC (IC1), ROM (IC2) or on the way of bus line route is possibly defect. If soldering, conductance is no problem, we need to replace these ICs.
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 500ns/div Length 100 W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 9.65µs V 4.7 V Marker 2 T 7.50µs V 4.9 V T 1/ T V -2.15µs 465.1k Hz 0.2 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 500µs W2 5µs Position W1 6.20µs W2 25.00µs Time Base Internal External
D0
ROMCS Too long NG
RD
Time Time Base Internal
-39.9V 6.20µs Roll Off
11.20µs
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 1ms/div Length 100 W2 10ms/div Length 1k Sampling Normal 10ksps Marker 1 T 576.5ms V 4.8 V Marker 2 T 15.0ms V 0.2 V T 1/ T V -561.5ms 1.781 Hz -4.6 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 1ms W2 10ms Position W1 575.0ms W2 50.2ms Time Base Internal External
D0
ROMCS Too long NG
RST RESET Time Time Base Internal -40.0V 575.0ms Roll Off RESET 585.0ms
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KX-F910BX
Please observe A0, D0, ROMCE, MDMCS. Below graph show you the wave form that is observed when unit (board) is working correctly. Both graph are good wave.
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 5µs/div Length 1k W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 2098.80µs V 5.0 V Marker 2 T 7.50µs V 0.4 V T -2091.30µs 1/ T 478.2 Hz V -4.6 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 5µs W2 5µs Position W1 2083.20µs W2 25.10µs Time Base Internal External
TROUBLESHOOTING GUIDE
D0
ROMCS OK
MDMCS
Time Time Base Internal
-40.0V 2083.20µs Roll Off
2133.20µs
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 5µs/div Length 1k W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 2376.70µs V 0.4 V Marker 2 T 7.50µs V 5.0 V T -2369.20µs 1/ T 422.1 Hz V 4.6 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 5µs W2 5µs Position W1 2384.60µs W2 25.10µs Time Base Internal External
D0
ROMCS OK
MDMCS
Time Time Base Internal
-40.0V 2384.60µs Roll Off
2434.60µs
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KX-F910BX
The graphs below show you the wave form that is observed when MODEM doesn't work. (Oscillation is not intentionally supplied to MDM.) Please compare OK form to NG form. MDMCS (pin 54 of IC11) signal is coming many times more than good wave form. In the case of this wave form MODEM doesn't work. If soldering, conductance is no problem, we need to replace MODEM (IC11).
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 5µs/div Length 1k W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 352.95µs V 0.2 V Marker 2 T 7.50µs V 5.0 V T 1/ T V -345.45µs 2.895k Hz 4.8 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 5µs W2 5µs Position W1 327.95ms W2 25.10ms Time Base Internal External
D0
ROMCS NG MDMCS Too many MDMCS
Time Time Base Internal
-40.0V 327.95µs Roll Off
377.95µs
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 5µs/div Length 1k W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 352.95µs V 0.2 V Marker 2 T 7.50µs V 5.0 V T 1/ T V -345.45µs 2.895kHz 4.8 V
Time/div W1 5µs A0 W2 5µs Position W1 1347.40µs W2 25.10µs Time Base Internal External
D0
ROMCS NG
MDMCS Too many Time Time Base Internal -40.0V 1347.40µs Roll Off 1397.40µs
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KX-F910BX
Below graph show you the wave form that is observed when SRAM doesn't work. (BUS line at SRAM is intentionally opened.) Please compare OK (under) to NG (upper). SRAMCS (pin 20 of IC3) signal is coming like clock. In the case of this wave form SRAM access doesn't work. If soldering, conductance is no problem, we need to replace SRAM (IC3).
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 5µs/div Length 1k W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 1372.40µs V 5.0 V Marker 2 T 7.50µs V 0.2 V T -1364.90µs 1/ T 732.7 Hz V -4.8 V
Trigger A0
CH1/2
MEM1 MEM2
Time/div W1 5µs W2 5µs Position W1 1347.40µs W2 25.10µs Time Base Internal External
TROUBLESHOOTING GUIDE
D0
ROMCS
SRAMCS NG Like clock Time Time Base Internal -40.0V 1347.40µs Roll Off 1397.40µs
CH1 5V/div CH2 5V/div H1 W1 CH3 5V/div 10.0V CH4 5V/div W1 2µs/div Length 400 W2 5µs/div Length 1k Sampling Normal 20Msps Marker 1 T 1372.40µs V 5.0 V Marker 2 T 7.50µs V 5.0 V T -1364.90µs 1/ T 732.7 Hz V 0.0 V
Time/div W1 2µs A0 W2 5µs Position W1 1362.40µs W2 25.10µs Time Base Internal External
D0
ROMCS
SRAMCS OK Time Time Base Internal -40.0V 1362.40µs Roll Off
1382.40µs
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KX-F910BX
(6) CHECK SOLDERING We should check soldering at first. Because many problem a