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SERVICE MANUAL
DVD-VCR SERVICE MANUAL
MODEL: V390H
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL.
MODEL: V390H
P/NO : AFN73432114
AUGUST, 2010
CONTENTS
SECTION SECTION SECTION SECTION SECTION SECTION 1 . . . . SUMMARY 2 . . . . CABINET & MAIN CHASSIS 3 . . . . ELECTRICAL 4 . . . . MECHANISM OF VCR PART 5 . . . . MECHANISM OF DVD PART 6 . . . . REPLACEMENT PARTS LIST
1-1
SECTION 1 SUMMARY
CONTENTS
PRODUCT SAFETY SERVICING GUIDELINES FOR DVD+VCR PRODUCTS ...... 1-3 SERVICING PRECAUTIONS .................................................................................................. 1-4
· General Servicing Precautions · Insulation Checking Prodedure · Electrostatically Sensitive Devices
SERVICE INFORMATION FOR EEPROM IC SETTING(VCR) ..................................... 1-5 SERVICE INFORMATION FOR EEPROM (DVD) ............................................................. 1-6 SPECIFICATIONS ........................................................................................................................1-7
1-2
PRODUCT SAFETY SERVICING GUIDELINES FOR DVD+VCR PRODUCTS
CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY, NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK. SUBJECT : X-RADIATION 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER VOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIRABLE LEVELS. 2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM. 3. IT IS ESSNTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA TION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCEDURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMER'S INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE. 6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED). SUBJECT: IMPLOSION 1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES. SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL MOUNTING KIT. MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.'S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
SAFETY CHECKS
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. A CHECK SHOULD BE MADE OF THE FOLLOWING.
SUBJECT : FIRE & SHOCK HAZARD
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS TO AVOID POSSIBILITY OF ADJACENT COMPONENT S H O R T S . THIS IS ESPECIALLY IMPORTANT ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP. 2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOT BEEN DEFEATED. 3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES. 4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTS AND COMPONENTS. FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD). AND REPLACE IF NECESSARY FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS. 5. NO LEAD OR COMPONENT SHOULD TOUCH A RECIVING TUBE OR A RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUNING METAL SURFACES MUST BE AVOIDED. 6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTORS, CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES, DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS. 7. AFTER RE-ASSEMBLY OF THE SET ALWAYS PERFORM AN A.C. LEAKAGE TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER DURING THIS TEST USE AN A.C. VOLTMETER, HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER; CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. A.C. VOLTMETER
GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC
PLACE THIS PROBE ON EACH EXPOSED METAL PART
SUBJECT: GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED "DANGEROUS VOLTAGE" THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
1-3
SERVICING PRECAUTIONS
CAUTION : Before servicing the VCR+DVD covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the VCR+DVD AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module, or any other assembly. (2) Disconnection or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an electrolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this VCR+DVD or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cotton-tipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with whitch instruments covered by this service manual might be equipped. 5. Do not apply AC power to this VCR+DVD and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed. 6. Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1M-ohm. Note 1 : Accessible Conductive Parts including Metal panels, Input terminals, Earphone jacks, etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grouned-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified a "anti-static" can generate electrical charges sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protec tive package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.)
1-4
SERVICE INFORMATION FOR EEPROM IC SETTING(VCR)
EEPROM option code No. setting
NAME OPT0 OPT1 OPT2 OPT3 OPT4 OPT5 12/26 HEX 00 00 00 00 00 00 BINARY 00000000 00000000 00000000 00000000 00000000 00000000
EEPROM option code No. setting procedure
1. DETECT NEW EEPROM (OPTION EDIT SCREEN) - Eeprom EDIT screen automatically appears if replacing Eeprom. - Setup option data using the cursor Up/Down key of a remote control. (Setup upon BOM depending on OPT0~OPT5 model) · Since an initial remote control is set to LG for LG model, appropriately set optiona data using the cursor Up/Down key. 2. EEPROM WRITED AND EEPROM INITIAL - Writes data on EEPROM by using REMOCON "OK" + FRONT PLAY KEY FOR MORE THAN 5 SECONDS. 3. PG ADJUST 1) Payback the SP standard tape 2) Press the "OK" key on the Remote controller and the "PLAY" key on the Front Panel the same time, then it goes in to Tracking initial mode. 3) Repeat the above step(No.2), then it finishes the PG adjusting automatically. 4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data. 4. BUYER SELECTION - Font ejection key + open/close key for more than 5 seconds. - Option code is displayed in TV - First byte of OPTO is changed whenever front eject key + open/close key. - LG remote conroller No.0.
00 V00 <--- -COM Ver. ID : LG VERSION : 05 ROM DATE : 02.17.05 Correction Ver. NAME OPT0 OPT1 OPT2 OPT3 OPT4 OPT5 HEX 00 44 E0 CA 09 EB BINARY 00000000 00000000 00000000 00000000 00000000 00000000
MODEL V390H
WR : OK I : EXIT MOVE : EDIT :
1-5
SERVICE INFORMATION FOR EEPROM (DVD)
POWER ON
DVD LOGO Status (NO Disk status)
DETECT NEW EEPROM (OPTION EDIT SCREEN) MODEL NAME OPT 1 OPT 2 OPT 3 OPT 4 OPT 5 OPT 6 OPT 7 OPT 8 OPT 9 OPT A OPT B OPT C OPT D OPT E OPT F OPT G V390H HEX 4E 4C 00 D5 03 05 E4 00 00 00 80 00 00 00 00 00
Remotecontrol Pause key-->1-->4-->7-->2 in order.
Press number 0~9, Press charater A~F (1~6 for a while)
Use arrow key ( ) to move to approprite position and make changes
Press pause key once
Change will be applied when power OFF-->ON. * OPTION · NTSC model doesn't have VCR option and use DVD option B~F as VCR option. (only DVD exist) · PAL model has another separate VCR option. (Both VCR and DVD exist)
1-6
SPECIFICATIONS
· GENERAL Power requirements Power consumption Dimensions (approx.) Mass (approx.) Operating temperature Operating humidity Timer RF Modulator · SYSTEM Laser Video Head system Signal system Frequency response Semiconductor laser, wavelength 650 nm Double azimuth 6 heads, helical scanning. PAL DVD (PCM 96 kHz): 8 Hz to 44 kHz DVD (PCM 48 kHz): 8 Hz to 22 kHz CD: 8 Hz to 20 kHz More than 100dB (ANALOG OUT connectors only) Less than 0.008% More than 100 dB (DVD) More than 95 dB (CD) AC 200-240V, 50/60 Hz 18W 430 x 78.5 x 265 mm (W x H x D) 4.2 kg 5°C to 35°C (41°F to 95°F) 5 % to 90 % 24 hours display type UHF 22 - 68 (Adjustable)
Signal-to-noise ratio Harmonic distortion Dynamic range
· INPUTS (VCR) Audio Video · OUTPUTS (DVD) VIDEO OUT S-VIDEO OUT COMPONENT VIDEO OUT (Progressive Scan) RGB output Audio output (coaxial audio) Audio output (optical audio) Audio output (analog audio) 1 Vp-p 75 ohms, sync negative (Y) 1.0 Vp-p 75 ohms, negative sync., Mini Din 4-pin x 1 (C) 0.3 Vp-p 75 ohms (Y) 1.0 V (p-p), 75 , negative sync, RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 2 0.7 Vp-p, 75 ohms 0.5 V (p-p), 75 , RCA jack x 1 3 V (p-p), 75 , Optical connector x 1 2.0 Vrms (1 KHz, 0 dB), 600 , RCA jack (L, R)x2/ SCART (TO TV) -6.0dBm, more than 10 kohms (SCART) -6.0dBm, more than 47 kohms (RCA) 1.0 Vp-p, 75 ohms, unbalanced (SCART/RCA)
· OUTPUTS (VCR) Audio Video RGB output -6.0dBm, less than 1 kohms (SCART) 1.0Vp-p, 75 ohms, unbalanced (SCART) 0.7 Vp-p, 75 ohms
1-7
MEMO
1-8
SECTION 2 CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS .....................................................................................................................2-2
1. Cabinet and Main Frame Section ...........................................................................................2-2 2. Packing Accessory Section....................................................................................................2-3
2-1
1. CABINET AND MAIN FRAME SECTION
462
EXPLODED VIEWS
NOTES) THE EXCLAMATION POINT WITHIN AN
EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE.
5
462
A46
457
470
324
4
300 471 A47
A00
250
323
322
469
469
288
462
465
330
3
463
463
274 273 A26 271 469 284 287 261 286 260
276
2
283
285
A50
A
280
B
2-2
A43
1
A44
C
452
261
452 452
452
261
D
2. PACKING ACCESSORY SECTION
808 BATTERY
806 RF CABLE
REMOTE CONTROLLER 900 ASSEMBLY
821 SCART CABLE
801 INSTRUCTION ASSEMBLY
803 PACKING, CASING
804 BAG 803 PACKING, CASING
802 BOX
2-3
MEMO
2-4
SECTION 3 ELECTRICAL
CONTENTS
VCR PART ELECTRICAL ADJUSTMENT PROCEDURES ..................................................3-2 ELECTRICAL TROUBLESHOOTING GUIDE......................3-3
1. POWER(SMPS) CIRCUIT .............................3-6 2. SYSTEM/KEY CIRCUIT ................................3-7 3. SERVO CIRCUIT ...........................................3-8 4. Y/C CIRCUIT................................................3-10 5. HI-FI CIRCUIT..............................................3-14 6 TUNER/IF CIRCUIT ......................................3-17
DVD PART ELECTRICAL TROUBLESHOOTING GUIDE .................................................................3-63
1. POWER OPERATION FLOW......................3-63 2. SYSTEM TEST FLOW.................................3-64 3. TEST & DEBUG FLOW...............................3-65
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING .............................3-71
1. SYSTEM 27MHZ CLOCK, RESET, FLASH R/W SIGNAL...................................3-71 2. SDRAM CLOCK ..........................................3-72 3. TRAY OPEN/CLOSE SIGNAL ....................3-72 4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION)...............................3-74 5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION)...............................3-74 6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION) .................3-75 7. DISC TYPE JUDGEMENT WAVEFORM ....3-75 8. FOCUS ON WAVEFORM ............................3-77 9. SPINDLE CONTROL WAVEFORM (NO DISC CONDITION)...............................3-79 10. TRACKING CONTROL RELATED SIGNAL(SYSTEM CHECKING) ................3-79 11. ZR36888 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF)........................................3-80 12. ZR36888 VIDEO OUTPUT WAVEFORM ..3-80 13. ZR36888 AUDIO OUTPUT TO AUDIO DAC ...............................................3-80 14. AUDIO OUTPUT FROM AUDIO DAC.......3-80
BLOCK DIAGRAMS ......................................3-19
1. 2. 3. 4. 5. 6. POWER (SMPS) BLOCK DIAGRAM ..........3-19 TU/IF, NICAM & A2 BLOCK DIAGRAM .....3-21 VPS BLOCK DIAGRAM ..............................3-22 Y/C BLOCK DIAGRAM ...............................3-23 Hi-Fi BLOCK DIAGRAM .............................3-25 SYSTEM BLOCK DIAGRAM ......................3-27
CIRCUIT DIAGRAMS....................................3-29
1. POWER (SMPS) CIRCUIT DIAGRAM ........3-29 2. POWER (SMPS) 2 CIRCUIT DIAGRAM .....3-31 3. TU/IF CIRCUIT DIAGRAM ..........................3-33 4. A/V CIRCUIT DIAGRAM .............................3-35 5. Hi-Fi CIRCUIT DIAGRAM ...........................3-37 6. SCART(JACK) CIRCUIT DIAGRAM ...........3-39 7. SYSTEM CIRCUIT DIAGRAM.....................3-41 8. KEY CIRCUIT DIAGRAM ............................3-43 9. TIMER CIRCUIT DIAGRAM ........................3-45 WAVEFORMS..................................................3-47 CIRCUIT VOLTAGE CHART ...........................3-49
BLOCK DIAGRAMS ......................................3-84
1. SYSTEM BLOCK DIAGRAM ......................3-84 2. SERVO BLOCK DIAGRAM.........................3-85 3. AUDIO & VIDEO IN/OUT BLOCK DIAGRAM ......................................3-86
PRINTED CIRCUIT DIAGRAMS ...............3-55
1. 2. 3. 4. 5. MAIN P.C.BOARD (TOP SIDE) ..................3-55 MAIN P.C.BOARD (BOTTOM SIDE) ..........3-57 POWER P.C.BOARD ..................................3-59 KEY P.C.BOARD.........................................3-60 TIMER P.C.BOARD .....................................3-59
CIRCUIT DIAGRAMS ....................................3-87
1. 2. 3. 4. 3-1 SYSTEM CIRCUIT DIAGRAM.....................3-87 SERVO CIRCUIT DIAGRAM .......................3-89 MEMORY CIRCUIT DIAGRAM ...................3-91 2DAC CIRCUIT DIAGRAM..........................3-92
VCR PART
1. Servo Adjustment
1) PG Adjustment
· Test Equipment a) OSCILLOSCOPE b) NTSC MODEL : NTSC SP TEST TAPE C) PAL MODEL : PAL SP TEST TAPE
ELECTRICAL ADJUSTMENT PROCEDURES
· Adjustment And Specification MODE
PLAY
MEASUREMENT POINT
V.Out H/SW(TP)
ADJUSTMENT POINT
R/C TRK JIG KEY
SPECIFICATION
6.5 ± 0.5H
· Adjustment Procedure
a) Insert the SP Test Tape and play. Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the "ATR" is blink after the SP Test Tape is inserted. b) Connect the CH1 of the oscilloscope to the H/SW(TP) and CH2 to the Video Out for the VCR. c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(TP), and then check the distance (time difference), which is from the selected A(B) Head point of the H/SW(TP) signal to the starting point of the vertical synchronized signal, to 6.5H ± 0.5H (412s, 1H=63s).
· PG Adjustment Method
a-1) Payback the SP standard tape b-2) Press the "OK" key on the Remote controller and the "PLAY" key on the Front Panel the same time for more than 5seconds, then it goes in to Tracking initial mode. c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically. d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
· CONNECTION
V.Out OSCILLOSCOPE CH1 CH2 H/SW(TP) R/C KEY
· WAVEFORM
H/SW V.out (TP)
H/SW 6.5H(416us)
Composite VIDEO
3-2
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power(SMPS) CIRCUIT
(1) No 5.3VA No 5.3VA
YES
Is the FR101 Normal?
YES
NO
Replace the FR101 (Use the same ICW)
Is the BD101 Normal?
YES
NO
Replace the BD101
Is the R101 Normal?
YES
NO
Replace the R101
Is Vcc (9V - 18V) sup- NO plied to IC101 Pin2?
YES
Is the D102 normal?
NO
Check or Replace the D102
Are the D125 normal?
NO
Replace the D125
Is there about 2.5V NO at the IC103 Pin1?
YES
Replace the IC103
Is the D123 normal?
YES
NO
Replace the D123
Is the D124 Normal?
YES
NO
Replace the D124
Is the D121 Normal?
YES
NO
Replace the D121
Power Line of Main PCB is short
3-3
(2) No 5.0V_D No 5.0V_D
YES
(3) No 5.0V_T No 5.0V_T
YES
Is the Vcc(5.3V) sup- NO plied to Q165 Emittor?
YES
Check or Replace the D125
Is the Vcc(5.3V) sup- NO plied to Q163 Emittor?
YES
Check or Replace the D125
Is the Q162 Base `H'?
YES
NO
Check the PWR CTL "H" signal from -com
Is the Q162 Base `H'?
YES
NO
Check the PWR CTL "H" signal from -com
Check or Replace the Q165
Check or Replace the Q163
(4) No 3.8V No 3.8V
YES
(5) No 33V No 33V
YES
Is the D123 normal?
YES
NO
Check or Replace the D123
Is the Vcc(33V) sup- NO plied to Q161 Emittor?
YES
Check or Replace the D121
Power line of Main PCB is short
Is the Q162 Base `H'?
YES
NO
Check the PWR CTL "H" signal from -com
Check or Replace the Q161
3-4
(6) No Motor_Vcc (To Cap, Drum Motor ) No Motor_Vcc
YES
(7) No REG 12V No REG 12V
YES
NO Is the Vcc(14V) supplied to C134?
YES
Check or Replace the D124
Is the Vcc(14V) supplied NO to Q165 Collector?
YES
Check or Replace the D124
Check or Replace the Cap / Drum
Is the Vcc(14V) sup- NO plied to Q165 Base?
YES
Check the PWR CTL "H" signal from -com
Check or Replace the Q165
3-5
2. SYSTEM/KEY CIRCUIT (1) AUTO STOP
Auto Stop YES Does the SW25 waveform appear at the IC501 Pin23? YES Do the T-UP Reel Pulses appear at the IC501 Pin3? YES Replace the IC501. NO Do T/UP Reel Pulses appear at the Q514 Base terminal? YES Replace the T/UP Reel Sensor (RS501). NO Does 5.0V appear at the RS501? YES NO NO Check the Drum Motor signal.
Check the Power Circuit.
(2) The unstable loading of a Cassette tape
The unstable loading of a Cassette tape YES Is 12V applied to the PMC01 Pin8? YES Does the "H" signal appear at the IC501 Pin32 during inserting the CST ? YES Does the "L" signal appear at the IC501 Pin19 during inserting the CST? YES Check the Deck Mechanism. Check the IC501 Pins 86, 87, 88, 89. Check the CST SW and the peripheral circuitry. NO NO Is 5.0V applied to the R544 ? YES NO NO Check the Power.
Refer to SMPS 5.3VA troubleshooting.
Caution : Auto stop can occur because Grease or Oil is dried up
3-6
3. SERVO CIRCUIT (1) Unstable Video in PB MODE
Unstable Video in PB Mode. YES Does the Noise level of the screen change periodically? YES Does the CFG waveform appear at the IC501 Pin67? YES On tracking do the CTL pulses move? YES Does the Video Envelope waveform appear at the IC501 Pin82? YES Replace the IC501. NO Refer to "When the Y signal doesn't appear on the screen in PB Mode". NO Replace the IC501.
Refer to "(2) No 12VA of Power section"
(2) When the Drum Motor (2) doesn't run.
When the Drum Motor doesn't run, YES Does 12V appear at the PMC01 Pin8? YES Does 2.8V appear at the PMC01 Pin12? NO NO
Do the Drum PWM Pulses appear at the IC501 Pin34? YES Aren't the foil patterns and the Components between IC501 Pin34 and PMC01 Pin12 short? YES Do the DFG Pulses appear at the IC501 Pin104? YES Do the Drum PWM Pulses appear at the IC501 Pin34?
NO YES
Do the DFG Pulses appear at the PMC01 Pin11? NO Replace the Cap M.
NO
Aren't the foil patterns and the Components between IC501 Pin 104 and PMC01 Pin11 short? Replace the IC501.
NO
Check the connector (PMC01) and the Drum Motor Ass'y.
Aren't the connecting patterns and the Components between IC501 Pin34 and PMC01 Pin12 short? 3-7
2. SERVO CIRCUIT (3) When the Capstan Motor doesn't run,
When the Capstan Motor doesn't run,
Does 12VA appear at the PMC01? YES Does 2.8V appear at the PMC01? YES Check the PMC01 and the Capstan Motor Ass'y.
NO
Refer to "SMPS(CAPSTAN/12Volt) Trouble Shooting".
NO
Does the PWM signal appear at the IC501 Pin33? YES NO
Aren't the foil patterns and Components between IC501 Pin33 and PMC01 Pin9 short?
Does the CFG signal appear at the PMC01 Pin1? YES NO
Does the CFG signal come into the IC501 Pin67? YES Does the Capstan PWM signal appear at the IC501 Pin33? YES Aren't the foil patterns and Components between IC501 Pin33 and PMC01 Pin9 short? NO NO
Check the Capstan Motor Ass'y.
Aren't the foil patterns and component between IC501 Pin67 and PMC01 Pin1 short?
Replace the IC501.
3-8
2. SERVO CIRCUIT (4) KEY doesn't working
KEY doesn't working.
Is 5V applied to the IC501 Pin36? YES Does LED or FLD change when a function button is pressed?
NO
Refer to "SMPS 5.3VA Trouble Shooting".
NO
Replace the defective switches.
3-9
4. Y/C CIRCUIT (1) No Video in EE Mode,
No Video in EE Mode
Does the Video signal appear at the IC301 Pin48? YES Is 5V applied to the IC301 Pins18, 24, 42, 55, 72, 91? YES Does the Video signal appear at the IC301 Pin65? YES Does the Video signal appear at the IC501 Pin47? YES Does the Video signal appear at the Emitter terminal of the Q309?
NO
Check the 19Pin of Tuner.
NO
Check the 5.0VT, 5.3VA Line. (Power Circuit)
NO
Is I2C BUS signal applied to NO the IC301 Pins68, 69? YES
Check the System Circuit. (Refer to `SYSTEM I2C BUS CHECK Trouble Shooting')
NO
Chck the path of the signal between the IC301 Pin65 and IC501 Pin49.
Check C316. (AGC) YES
NO
Does the 12VT, 5.3VA appear at the Emitter terminal of the Q309. YES Replace the Q309.
NO
Replace the IC301.
Check the 12VT, 5.4VA Line. (Power Circuit)
3-10
3. Y/C CIRCUIT (2) When the Y(Luminance) signal doesn't appear on the screen in PB Mode,
Is 5.0VT, 5.3VA applied to the IC301 Pins24, 42, 55, 72, 91? YES Is the I2C Bus siganl applied to the IC301 Pins68, 69 ? YES Does the normal RF signal appear at the IC301 Pin78? NO Is the V.H.S/W signal applied to the IC301 Pin70? YES Is V.H.S/W "H" about 3.4V at the IC301 Pin70? YES YES Clean the Drum. NO Replace the IC301. NO Check the V.H.S/W level. (Check R303, R304) NO Check the System Circuit. (IC501 Pin23) NO Refer to `SYSTEM I2C BUS CHECK Trouble Shooting'. NO Check the line of the 5.0VT, 5.3VA Line. (Power Circuit)
Does the Y(Luminance) RF NO signal appear at the IC301 Pin79? YES Is the Y(Luminance) Video waveform showed up at theIC301 Pin43? YES Replace the IC301. NO
Check the path of the Y(Luminance) RF signal. (Check the C312)
YES
Check the path of the Y(Luminance) RF signal. (Check C327)
YES
3-11
3. Y/C CIRCUIT (3) When the C(Color) signal doesn't appear on the screen in PB Mode,
Is 5.0VT/5.3VA applied to the IC301 Pins24, 42, 55, 72, 91. YES Is the Color Rotary signal applied to the IC301 Pin70? YES Is Color Rotary "H" about 3.4V? YES Does the Color signal appear at the IC301 Pin25 ? YES NO Does the Color signal appear at the IC301 Pin21? YES Replace the IC301. Replace the IC301. Check the Color Pass. NO Does the X301(4.43MHZ) oscillate? NO Replace the X301. NO Check the Color Rotary level. (Check the R303) NO Check the Color Rotary Circuit. (IC501 Pin98 ) NO Check the line of the 5.0VT/ 5.3VA Line. (Power Circuit)
3-12
3. Y/C CIRCUIT (4) When the Video signal doesn't appear on the screen in REC Mode,
Is the EE signal normal? YES Is 5.0VT/5.3VA applied to the IC301 Pins24,42,55,72,91? YES Does PB Mdoe operate normally? YES Does the RF signal appear at the IC301 Pin78? YES NO Is the REC `H' signal (about 4V) applied to the IC301 Pin80? YES Check REC Luminance Pass & Color Pass. YES Replace the IC301. NO Check the System of REC `H'. (the IC501 Pin27 / the D301) NO Check PB Mode. NO Check the line of the 5.0VT/ 5.3VA Line.(Power Circuit) NO Check EE Mode.
Does the REC RF signal appear at the IC301 Pins88,89,94,95? YES Check the Drum & Drum Connector
NO
Check the circuit of the IC301 Pins85, 86.
YES
3-13
5. Hi-Fi CIRCUIT (A) No Sound(EE Mode)
No Sound. YES Check the TU Audio of IC801 Pins2, 3. NO Check the IC751 Pins30, 31.
Check the DVD Audio of IC801 Pins4, 5.
NO
Check the DVD Audio OUT. (JK902 DVD_A_L_L/R).
Check the AV1 Audio of IC801 Pins6, 7.
NO
Check the Scart1 Jack. (SC901 Scart1 Audio in Pins2, 6).
Check the AV2 Audio of IC801 Pins8, 9.
NO
Check the Scart2 Jack. (SC901 Scart2 Audio in Pins2, 6).
Check the AV3 Audio of IC801 Pins10, 11.
NO
Check the front Jack.
YES Check the Vcc of IC801 Pins34, 40, IC802 Pin13. YES Check the IIC Clock and DATA at IC801 Pins42, 43. YES Check the Audio of IC801 Pins16, 17. YES Check the Audio of IC802 Pins1, 14. YES Check the JK902, SC901. NO Replace IC802. NO Replace IC801. NO Check the IC501 Pins17, 18. NO Check the Power 5.0V, 12VT.
3-14
3. Y/C CIRCUIT (B) Hi-Fi Playback
PB mode YES No Sound. YES Check the Vcc of IC801 (Pins34, 40) YES Check the Hi-Fi Selection switch. (IC801 Pin41) and the Tape quality. YES Is the RF Envelope at IC801 Pin44 over 2Vp-p? YES Check IC801 Pin42(Data), Pin43(Clock) YES NO Check Power 5.0V, 12VT.
NO
Check IC501 Pin26 (A.H/SW)
NO
NO
Check the parts of -COM (IC501 Pins17, 18)
NO Do Audio Signals appear at IC801 Pin16(L-CH), 17(R-CH)? YES NO Do Audio Signals appear at IC802 Pin10(L-CH), 16(R-CH)? YES Do Audio Signals appear at NO IC802 Pins11, 16? YES
Check the Connection at P3D01 Pins7, 9.
Check the A.IN line of IC802(C850, C852) NO
Check the Vcc of IC802 Pin13. YES Replace IC802.
Check Power.
Do Audio Signals appear at JK902?
NO
Check the Jack(JK902)
3-15
(C)
Hi-Fi REC. YES It can't be recorded Hi-Fi Audio signal. YES Check Vcc of IC801.(Pins34, 40) YES Check IC801 Pin42(Data), Pin43(CLOCK). YES Do Audio signals appear at IC801 Pins16, 17? YES Do FM Audio signals appear at IC801 Pin36? YES Check the Contact Point of Drum Connector if good then Replace the Drum. NO Replace IC801. NO Check Audio input signal of IC801 Pins2, 3(TU.A.), 4, 5(DVD.A.), 6, 7(AVI.A.), 8, 9(AV2.A.), 10, 11(AV3.A.). NO Check ports of -COM. (IC501 pins 17, 18) NO Check Power 5V, 12V.
3-16
6. Tuner / IF CIRCUIT (A) No Picture on the TV screen
No picture on the TV screen YES Does the Video signal at the TU701 Pin19. YES
NO
Is 33VT applied to TU701 Pin17? YES Is 5VT applied to TU701 Pin4? YES Does the Clock signal appear at TU701 Pin12? YES Does the data signal appear at TU701 Pin13? YES Replace Tuner.
NO
Check 33V line.
NO
Check 5V line.
NO
Check the lIC Clock Signal of -COM Pin18.
NO
Check the lIC Data Signal of -COM Pin17.
Does Sync appear at IC501 Pin111. YES Does the Video signal at the IC501 Pin47. YES Does the Video signal at the IC301 Pin61. YES Does the Video signal at the IC903 Pin6. YES Check the signal flow from IC903 Pins26, 27 to SC901 Pin19.
NO
Check the signal flow from TU701 Pin19 to IC301 Pin48.
NO
Check the signal from IC301 Pin65 to IC501 Pin49.
NO
Check the signal from IC501 Pin47 to IC301 Pin56.
NO
Check the signal from IC903 Pin6 to IC301 Pin61.
3-17
(B) No Sound
No Sound. YES Check the Vcc of IC751 Pins1, 11, 19, 22, 33. YES Check the Tuner SiF signal at IC751 Pin2. YES Check the oscillator of IC751 Pins5, 6. YES Check the Audio of IC751 Pins30, 31. YES Check the Audio of IC801 Pins2, 3. YES Check the Audio of IC801 Pins16, 17. YES Check the Audio of IC802 Pins3, 5. YES Check the Signal flow from IC802 Pins3, 5, SC901 Pins1, 3. NO Check the signal flow from IC801 Pins16, 17 to IC802 Pins11, 16. NO Check the IIC Clock and Data at IC801 Pins42, 43. NO Check the signal flow from IC751 Pins30, 31 to IC801 Pins2, 3. NO Check the IIC Clock and Data at IC751 Pins12, 13. NO Replace X751 NO Check the Tuner SIF of TU701 Pin22. NO Check 5.0V Line.
3-18
BLOCK DIAGRAMS
1. POWER(SMPS) BLOCK DIAGRAM
NOTES) NOTES) NOTES) NOTES) Warning Parts that are shaded are critical With respect to risk of fire or electricial shock.
BD101
T101 ! TRANS
C103
+
SNUBBER BLOCK (D101,C105 C106,R104)
RECTIFIER & SMOOTING BLOCK (D124,C124,C134, R133,L124,C126)
12V REG BLOCK (Q166,ZD151,C160, R166,C159) 9V REG BLOCK (Q164,ZD152,C161, R168,C166) 8V REG BLOCK (D126,IC141,R167, C165)
MOTOR VCC 14VA REG12V
REG9V
NOISE FILTER BLOCK (C101,L102, C102)
DRIVE & S/W BLOCK (IC101, D102, R105, C104, C108 , C109, C107,ZD102) RECTIFIER & SMOOTING BLOCK (D123,C127,C137, L127) RECTIFIER & SMOOTING BLOCK (D121,C126,R136) RECTIFIER & SMOOTING BLOCK (D122,D125,C128, L128,C138)
8V
!
FUSE RESISTOR (FR101)
3.8V
33V S/W BLOCK (Q161,R154,R155 Q173,R174,R177)
33V
5.3VA 5V S/W BLOCK (Q165,C164,R172, R174) 5VT S/W BLOCK (Q163,C162,D127, R156,R157) PWR CTL BLOCK (Q162,C161,R164, R163) 5.0V
!
Y-CAP C110
PHOTO COUPLER (IC102)
!
Y-CAP C111
!
ERROR AMP (IC103)
BR BL (BK)(WH)
FEED-BACK BLOCK (R141,R142, C143,R143. R144.R145 R146)
M5V/5VT
PWR CTLíHí
3-19
3-20
2. Tu/IF, NICAM & A2 BLOCK DIAGRAM
3. VPS BLOCK DIAGRAM
A.OUT
SW1
SW2
AFT
AS
SIF
MSP3417 MSP3407
AFT
TU_VIDEO
TU_A_R
TU_A_L
5V
COMBI SCART
3-21
3-22
IIC DATA
IIC CLK
VPS_VIDEO
5.4VA MOD_AUDIO 5V MOD_VIDEO 33V TU_SECAM_H TU_SE_VL_H IIC CLK IIC DATA
(PB Mode)
V.H.SW
C.ROTARY DATA CLOCK
C.SYNC
V.OUT (MICOM)
S2 V.OUT
79 60dB AMP PB FM AGC SUB LPF Y/C MIX Y-LPF PB FM EQ V.ENV YNR 84 FM OEM 46 MAIN DE EMP
4. Y/C BLOCK DIAGRAM
78
70
69
68
67
65
63
S1 V.OUT 61 Y-Delay
87 90 C LPF 93 96 ACC MAIN CONV BPF
IC301 LA71750EM
43
C-Delay (1H/2H)
ACC DET
CCD LPF
CNC
SYNC IN 29
IC201 AM5869S
21 25 18 14
REC'H'
V.H.SW
C.ROTARY
DATA
CLOCK
V.OUT MICOM
80
79
78
76
75
70
69
68
67
C SYNC
65
59
58
V.IN4 FRONT V.IN3 DEC
3-23 3-24
54 52 29 16 IC201 AM5869S W/D CLIP W/D CLIP 88 (To Drum) LP REC 89 94 (To Drum) SP REC 95 REC FM EQ YNR Y-DELAY NL EMPHA AGC DETAIL ENH Y-LPF FBC 46 43 SW 50 48 V.IN2 S1 V.IN1 TUNER 2 12
(REC Mode)
IC301 LA71750EM
Killer C-LPF Main Conv
BPF 1H/2H DELAY ACC Main Conv COMP AMP
KILL DEC REC APC VX02 21 27 28
33 32 VX02 31 29 CLK-IN 4.43MHz COMBI SCART
5. Hi-Fi BLOCK DIAGRAM
VIDEO INPUT BLOCK
A B
DVD/R V. IN
OSD V. IN
Hi-Fi/ REC
AUDIO INPUT BLOCK
1 Tu A.IN 'L' Tu A.IN 'R' DVD A.IN 'L' DVD A.IN 'R' EU1 A.IN 'L' EU1 A.IN 'R' EU2 A.IN 'L' EU2 A.IN 'R' AV2 A.IN 'L' AV2 A.IN 'R' 2 3 4 5 6 7 8 9 10 11
37 Hi-Fi PB 'B'
36 Hi-Fi REC
35 Hi-Fi PB 'A' 8 A.OUT 'L' A.OUT 'R' 9 7 6 16 16 11 3
RF_H
DVD_FR_VIDEO A.OUT To JACK
IC801
17
IC802
2 12 1 14
5
19
EU2.A.OUT.L EU2.A.OUT.R
20 21 22 DVD_H
SCART 2 DVD A.IN 'R' DVD A.IN 'L'
NORMAL AUDIO OUT(To AVCP)
MODULATOR A.OUT (To Tu)
NORMAL AUDIO IN(From AVCP)
AUDIO INPUT BLOCK
COMBI SCART
3-25
3-26
6. SYSTEM BLOCK DIAGRAM
LD(+) LD(-)
R522, C568
L/M CONTROL R525, R526
MN101D10F
Q504, 505 R506, 507, 508, 509, 511 C504, 511
L503, C507, C509 L504, C505, C506 2fsc L505, Q506, R537, 539, 584, 585, C553, 554
COMBI SCART
3-27
3-28
CIRCUIT DIAGRAMS
IMPORTANT SAFETY NOTICE WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE MODIFIED OR ALTERED WITHOUT PERMISSION FROM THE LG CORPORATION. ALL COMPONENTS SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT.
1. POWER(SMPS) CIRCUIT DIAGRAM
SPECIAL COMPONENTS ARE SHADED ON THE NOTE : SCHEMATIC FOR EASY IDENTIFICATION. 1. Shaded( ) parts are critical for safety. Replace THIS CIRCUIT DIAGRAM MAY OCCASIONALLY only DIFFER FROM THE ACTUAL CIRCUIT USED. THIS with specified part number. WAY, IMPLEMENTATION OF THE LATEST SAFETY 2. Voltages are DC-measured with a digital voltmeter AND PERFORMANCE IMPROVEMENT CHANGES during Play mode. INTO THE SET IS NOT DELAYED UNTIL THE NEW SERVICE LITERATURE IS PRINTED.
12
11
10
9
8
7
6
5
4
3
2
1
NOTES) NOTES)
Symbol denotes AC ground. Symbol denotes DC chassis ground.
NOTE) NOTE) NOTE) NOTE)
Warning Parts that are shaded are critical With respect to risk of fire or electricial shock.
POWER 3854R4894A 2005. 01. 16 F G H I J K L M N O P Q R S T
A
B
C
D
E
3-29
3-30
2. POWER(SMPS) 2 CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1 POWER 3854R14561A 2006. 02. 20 A B C D E F G H I J K L M N O P Q R S T
3-31
3-32
3. TU/IF CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1
EE MODE(VIDEO) TU MODE (AUDIO)
A B C D E F G H I J K L M N O P Q R S TUNER 3854R14565A 2005. 11. 04 T
3-33
3-34
4. A/V CIRCUIT DIAGRAM
IC301 Pin70 is defective. PB COLOR Signal disappear. D301or IC301 Pin 80 REC is defective.
11
12
Q305 is defective. EE, PB Screen doesn't appear.
IC301 Pin 69, 68 are defective. PB and Recording is failed. (IC301 doesn't operate.)
9 1
10
3
6
2
2 2
9
IC301 Pin 84 is defective. Audio Tracking is failed.
14 10
7
8
7
6
5
4
4
5 8 13
11
3
12
X301 is defective. PB COLOR Signal disappear.
2
PB Y+C PB Y PB C PB SECAM COLOR
REC Y+C REC Y REC C REC SECAM COLOR
REC AUDIO PB AUDIO(MONO)
WAVEFORM
1
Q302, Q303, Q314 are defective. No mono Audio Signal in PB MODE.
A B C D E
Q306 is defective. Normal Audio signal is not recorded.
AVCP 3854R14563A 2006. 03. 10 F G H I J K L M N O P Q R S T
3-35
3-36
5. Hi-Fi CIRCUIT DIAGRAM
12
11
IC801 Pins42, 43 aredefective. All Audio is not appear.
10
44 Pin is defective. Hi-Fi Audio is not appear.
9
8
7
6
5
4
3
2
1
PB REC
A B C D E F G H I J K L M N O P Q R S HI-FI 3854R14564A 2005. 11. 03 T
3-37
3-38
6. SCART(JACK) CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1 JACK ASSY 3854R14569A 2006. 03. 06 A B C D E F G H I J K L M N O P Q R S T
3-39
3-40
7. SYSTEM CIRCUIT DIAGRAM
12
LED will not operate. Q506, Q507 are defective.
11
10
9
8
3
7
4
6
6
Deck will not operate. R575, R576, R577, R578 are defective.
5
5
1 2 8 7
4
3
2
Auto stop occures. RS501,RS502 are defective.
1
VCR will not operate. IC505 is defective. Auto Rew will not working. ES501, ES502, LD501 are defective.
-COM is unstable. Q501, Q503 are defective.
WAVEFORM
CLOCK SETTING will not operate. X501 is defective.
E F G H I J
-COM will not operate. X502 is defective.
K L M N O P Q R S
SYSTEM 3854R14562A 2006. 04. 03 T
A
B
C
D
3-41
3-42
8. KEY CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1 KEY + TIMER 3854R15561A A B C D E F G H I J K L M N O P Q R S T
3-43
3-44
9. TIMER CIRCUIT DIAGRAM
12
11
10
9
8
7
6
5
4
3
2
1 KEY + TIMER 3854R15560A A B C D E F G H I J K L M N O P Q R S T
3-45
3-46
WAVEFORMS
* IC301 Oscilloscope Waveform * IC501 Waveform Photographs
IC301 Pin 75 PB mode 500mvp-p
IC301 Pins 48, 50, 54, 56 Video in 1Vp-p
IC301 Pin 67 PB/ REC mode 4.0Vp-p
IC301 Pin 100 REC mode 1.1Vp-p
V.HSW (IC501 Pin 23) 1V/10mS REC/PB MODE
DV.SYNC (IC501 PIN 24) 1V/100uS QUE/REV MODE
CTL(+) (IC501 Pin 74) 1V/10mS
CTL(-) (IC501 Pin 75) 1V/10mS
IC301 Pin 3 REC mode 2.0Vp-p
IC301 Pin 65 PB mode 2.02Vp-p
IC301 Pin 43 PB mode 400mVp-p
IC301 Pin 28 PB mode 400mVp-p
DFG/DFG (IC501 PIN 65) 1V/10mS REC/PB MODE
CFG (IC501 Pin 67) 1V/10mS
V.IN (IC501 Pin 49) 500mV/20uS
V.OUT (IC501 Pin 47) 500mV/20uS EE/PB MODE
IC301 Pin 68 PB/REC mode 5Vp-p
IC301 Pin 69 PB/ REC mode 5Vp-p
IC301 Pins 21 REC mode 340mVp-p
IC301 Pins 25 PB mode 300mVp-p
IC301 Pin 29 PB mode 400mVp-p
IC301 Pin 70 PB mode 3.6Vp-p
3-47
3-48
CIRCUIT VOLTAGE CHART
MODE PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 EE PB
IC201
1.67 1.88 1.28 1.71 1.28 0.01 0.01 5.24 0.01 0.02 2.62 2.53 2.72 2.39 2.6 2.59 3.44 1.58 5.24 1.1 5.24 0.01 1.7 0.43 2.9 1.7 1.7 3.26 1.67 1.89 1.28 1.72 1.29 0.01 0.01 5.25 0.01 0.02 2.67 2.61 2.72 2.38 2.6 2.56 3.44 1.57 5.24 1.1 5.24 0.01 2.05 0.4 2.86 1.7 1.7 3.26 5.01 0.09 2.37 0.83 2.36 2.37 2.36 2.36 2.35 2.37 2.49 0.01 2.34 0.03 2.34 0.23 2.35 5.06 4.08 0.01 2.02 4.44 4.66 5.04 3.33
MODE PIN NO. 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
EE 0.92 0.03 3.98 2.61 0.01 0.46 4.74 2.05 0.05 2.54 2.72 1.91 1.99 9.32 0.01 0.01 5.01 2.06 0.04 2.55 2.42 4.1 3.09 2.91 1.93 0.01 1.86 1.33 1.93 5.18 2.14 1.44 1.96 2.9 1.45 1.57 0.16 1.57 0.01 0.83 0.01 4.4 5.01 5.01 1.88 0.01 5.05 2.18 2.25 2.19 2.19 1.66 2.62 2.12 0.99
PB 1.08 2.15 3.96 2.61 0.01 1.55 4.96 2.09 0.07 2.54 2.77 1.91 2.02 9.3 0.01 0.01 5 2.71 4.17 1.16 3.28 4.1 3.12 2.84 1.93 0.01 1.94 2.31 1.98 5.17 2.86 1.01 1.85 2.92 1.57 2.63 0.16 2.77 0.01 2.51 0.01 0.01 4.99 5.04 2.57 0.01 5.03 1.01 3.95 0.73 0.84 0.56 3.32 1.99 0.99
MODE PIN NO. 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3
EE 1.13 0.01 5.04 0.13 0.01 0.45 1.92 1.94 1.94 1.89 5.06 0.01 1.91 1.91 1.86 1.91 0.01 2.38 2.38 2.38
PB 1.14 0.01 0.54 0.11 0.01 0.44 0.79 0.79 0.79 0.79 5.05 0.01 1.92 1.92 1.91 1.91 0.01 2.37 2.37 2.37 2.52 2.42 3.57 2.58 0.08 0.56 0.01 0.01 3.05 2.52 2.67 3.23 4.04 2.51 1.98 3.22 0.04 0.13 2.28 2.59 1.96 0.08 5.03 5.03 1.56 1.56 2.04 0.19 4.38 2.09 5.89 3.2 3.19
MODE PIN NO. 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
EE 0.01 3.08 3.08 5.9 11.79
PB 0.01 3.22 3.22 5.9 11.79 1.89 4.47 2.05 4.74 4.75 0.11 0.02 5.11 4.91 1.45 3.37 3.39 2.6 5.11 1.67 0.03 5.05 4.97 0.31 3.51 0.02 1.7 2.58 0.16 5.14 2.56 0.02 4.88 0.02 0.35 0.02 0.01 2.69 2.65 0.01 5.15 2.58 2.4 0.02 2.18 2.57 0.01 0.01 5.15 5.15 0.02 2.06 0.01 2.07
MODE PIN NO. 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 1 2 3
EE 4.96 3.07 2.47 2.45 2.03 0.01 0.01 0.09 5.08 0.09 5.09 0.11 0.77 0.15 2.59 1.38 1.65 0.16 2.39 2.59 2.59 0.01 2.28 5.16 2.28 0.02 2.58 0.01 0.01 5.16 5.15 4.51 0.15 0.22 0.2 0.15 5.18 5.17 5.18 0.01 5.15 5.01 0.02 5.17 2.36 0.02 5.12 5.12 2.58 0.02 0.69
PB 2.62 4.97 3.05 2.48 2.46 2.03 0.02 0.01 0.02 0.02 5.07 0.02 0.02 0.03 5.09 1.38 1.74 2.43 1.69 2.58 2.58 0.01 2.57 5.14 2.57 2.58 2.56 0.02 0.02 5.14 5.14 4.52 0.12 0.87 0.2 0.14 5.17 5.18 5.17 0.02 5.13 5.01 0.02 5.16 1.44 0.02 5.11 0.02 2.56 0.02 0.49 0.01 0.01 0.01
MODE PIN NO. 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
EE 0.01 5.04 5.01 0.01 5.16
PB 0.01 5.05 4.99 0.01 5.16 2.15 0.03 5.11 4.9 4.41 2.87 2.85 2.62 2.31 2.31 2.28 2.13 0.31 0.3 2.36 2.33 2.35 4.43 0.01 2.37 2.33 2.38 2.49 0.01 1.7 3.26 3.27 0.4 0.4 0.3 1.9 0.8 0.5 0.7 1.6 0.01 3.28 2.1 3.1 2.7 3.1 2.2 1 0.01 3.24 2.9 3.25 2.5
MODE PIN NO. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
EE 1.86 1.1 2.5 0.01 0.01 2.7 0.01 0.01 2.7 3.28 0.4 1.7 2 1.7 0.01 1.7 3.4 0.01 1.71 1.82 1.69 1.7 3.41 1.68 1.68 0.01 3.39 3.39 1.63 0.13 0.13 0.12 1.64 3.39 0.12 1.64 0.12 0.01 0.01 1.85 1.38 0.01 0.03 3.39 0.01 3.36 0.09 0.01 0.01 3.37 3.38 3.39 3.38 0.01 0.01
PB 1.9 1.63 1.08 0.01 0.01 1.22 0.05 0.01 3.2 3.24 1.13 1.5 2.5 3.9 1.2 1.5 3.28 1.5 2.7 3.19 1.6 1.5 3.28 3.04 3.03 0.01 3.27 3.29 1 0.5 1.26 0.5 1 3.28 0.4 1.5 0.5 0.01 0.4 1.8 0.03 0.01 0.34 3.28 0.01 3.22 0.37 0.01 3.23 3.25 3.28 3.28 3.17 0.02 0.01
MODE PIN NO. 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134
EE 1.6 3.39 1.59 0.01 1.4 1.8 1.6 3.39 1.6 1.8 1.7 0.01 1.61 0.01 1.29 0.01 1.69 3.39 1.69 1.78 1.58 0.01 1.61 1.61 1.61 3.39 0.01 0.01 0.01 0.01 1.68 0.02 0.02 0.01 0.01 1.69 1.69 0.01 1.69 3.39 0.01 0.01 0.01 0.01 1.7 3.39 0.01 0.07 0.01 0.01 0.01 1.85 3.37 3.38 3.38
PB 1.49 3.27 1.91 0.01 1.25 1.5 1 3.28 1.3 2 1.5 0.01 1.89 1.8 1.99 0.01 2.2 3.28 1.85 1.3 1.52 0.01 1.81 1.9 1.7 3.28 0.01 0.01 0.01 0.01 1.61 0.01 0.01 1.07 0.01 1.64 1.61 0.01 1.5 3.25 0.01 0.01 0.01 0.01 1.64 3.28 0.01 3.25 0.01 0.01 0.01 2.35 0.04 3.21 3.21
MODE PIN NO. 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189
EE 3.03 0.03 0.01 3.39 0.01 0.01 3.29 1.89 1.66 1.66 0.01 0.01 0.75 0.01 3.37 0.98 0.98 3.39 1.28 1.28 0.01 0.01 1.65 1.65 3.25 2.64 3.25 2.64 3.25 2.64 0.01 2.64 1.88 0.01 2.64 1.88 2.01 1.8 1.74 1.71 0.11 0.1 3.15 3.15 3.13 0.01 0.01 10.8 0.01 0.01 0.01 3.29 3.28 0.01 0.01
PB 0.01 0.01 3.26 3.25 0.01 0.01 3.35 2.32 2.6 2.26 0.01 0.01 1.23 0.01 3.21 1.32 1.31 3.26 1.62 1.65 0.01 0.01 1.31 1.31 3.36 3.21 3.2 3.21 3.21 3.2 0.01 3.14 2.15 0.01 2.1 2.3 2.3 2.2 2.3 1.69 1.68 0.16 0.36 3.2 3.25 0.01 0.01 2.3 3.25 0.01 0.2 3.26 3.26 0.02 0.01
MODE PIN NO. 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
EE 0.1 1.2 3.3 0.01 0.01 1.7 1.8 0.01 1.4 3.3 0.01 0.01 1.51 3.9 3.3 0.01 3.24 3.25 3.24
PB 1.3 3.26 0.01 0.01 0.01 1.36 0.01 2.41 3.26 0.01 0.01 1.36 2.9 3.26 3.25 3.28 3.28 3.27 0.39 3.38 2.25 3.37 1.77 1.63 0.01 2.2 2.23 3.37 2.07 1.03 0.01 1.05 3.37 0.01 3.25 3.29 3.18 3.31 0.39 3.13 2.05 0.39 0.56 0.34 0.49 0.45 0.01 0.33 0.24 1.58 0.08 0.19 3.15 2.56
IC501
1.44 0.02 4.22 4.75 4.77 0.11 0.02 5.12 4.92 1.43 3.38 3.39 2.57 5.13 2.31 0.03 5.02 5.02 2.6 0.06 5.11 2.41 2.59 0.16 5.16 2.55 4.92 0.02 0.02 0.02 0.08 0.02 2.64 0.02 5.17 2.59 2.38 0.01 2.09 2.55 0.01 0.02 5.16 5.16 0.01 1.63 0.01 1.02 1.91
IC5F1
2.22 0.03 5.12 4.89 4.51 2.68 2.86 2.32 2.37 1.35 2.6 2.37 0.85 1.95 2.38 2.36 2.37 4.52 0.01 2.4 0.27 2.39 2.52 0.01
IC3S1
2.52 2.42 3.57 2.58 0.08 0.56 0.01 0.01 3.05 2.52 2.67 3.23 4.04 2.51 1.98 3.22 0.04 0.13 2.28 2.59 1.96 0.08 5.03 5.03 1.56 1.56 2.04 0.19 4.38 2.09
IC603
3.37 1.67 3.37 1.73 1.8 0.01 1.71 1.6 3.38 3.38 1.97 0.01 0.16 3.38 0.01 3.36 3.36 3.34 3.34 0.19 3.34 1.2 0.15 0.14 0.38 0.3 0.34 0.01 1.93 1.94 0.15 0.17 0.04 0.27 0.27
IC301
5.04 0.21 2.38 0.11 2.37 2.37 2.36 2.36 2.35 2.38 2.44 0.01 2.35 0.36 2.35 5.07 2.34 5.07 4.07 0.01 3.23 2.62 2.62 5.06 0.12
IC601
0.01 3.29 3.29 0.08 0.05 0.05 1.72 1.72 2.78 1.72 0.01 0.01 3.44 0.01 3.43 1.71 3.31 1.7 0.7 0.01 3.39 2.6 3.39 2.4
IC402
5.89 3.08 3.08
IC503
0.01 0.01 0.01
3-49
3-50
MODE PIN NO. 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35
EE 0.29 3.38 1.78 0.01 0.04 0.04 1.9 3.37 1.64 1.7 0.04 1.68 0.02 3.38 1.89 0.81 0.01 1.35 0.01
PB 3.56 3.37 1.77 0.08 0.08 0.01 1.39 3.37 1.8 1.37 0.01 1.53 1.99 1.68 0.25 1.48 0.47 1.26 0.01 0.36 0.35 1.67 1.36 0.35 0.33 1.36 2.28 0.34 0.31 3.37 4.91 3.38 3.38 0.31 1.58 2.76 1.2 3.37 3.38 3.37 3.38 3.34 3.34 3.38 0.01 3.38 0.02 0.01 0.01 0.01 2.9 0.02 1.78 1.88
MODE PIN NO. 36 37 38 39 40 41 42 43 44 45 46 47 48 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
EE 0.02 3.37 2.87 2.95 0.01 0.02 0.01 2.95 2.88 2.88 0.01 3.37 0.01
PB 3.38 1.96 1.92 1.89 0.26 1.92 1.96 1.95 1.94 0.01 3.38 3.37 3.09
MODE PIN NO. 33 34 35 36 37 38 39 40 41 42 43 44
EE 5.05 4.1 0.01 2.72 0.04 0.04 0.04 2.72 2.71 2.59 2.45 0.01
PB 5.05 4.1 0.01 2.72 0.04 0.04 0.04 2.72 2.71 2.59 2.45 0.01
MODE PIN NO. 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14
EE 3.77 3.87 3.88 3.89 0.79 0.01 3.85 3.89 0.79 3.88 3.89 3.88 11.71 0.66 0.47 0.48 0.01 0.66 5.08 0.01 5.03 4.99 0.08
PB 3.83 3.81 3.79 3.88 0.79 0.56 3.85 3.88 0.8 3.87 3.85 3.86 11.71 0.65 2.27 0.65 0.01 0.76 5.06 0.92 5.04 4.97 0.95 5.78 4.99 5.09 0.01 5.07 5.88 0.02 6.57 0.47 0.01 6.59 5.01 11.78 0.48 0.01 6.58 5.1 0.11 0.09 2.23 5.1 1.24 0.02 1.58 2.24 0.01 1.41 0.01 2.21 5.1
MODE PIN NO. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
EE 2.22 5.11 2.3 2.3 0.01 2.3 2.3 0.01 1.18 1.06 0.01 1.41 1.51 0.01 1.5 1.62 0.06 2.35
PB 2.22 5.11 2.3 2.3 0.01 2.3 2.3 0.01 1.18 1.06 0.01 1.41 1.51 0.01 1.5 1.62 0.06 2.35
Transistor C201 C208 C209 C214 C216 C217 C223 C302 C304 C307 C308 C311 C314 C315 C316 C318 C320 C322 C323 C324 C325 C327 C331 C333 C336 C337 C339 C346 C347 C348 C349 C356 C357 C388 C3S3 C3S4 C3S7 C3T1 C3T2 C3T3 C3T4 C3T6 C413 C414 C414 C416 C417 C501 C502 C504 C505 C507 C511 C511 C522
STOP + 5.11 3.36 3.37 5.33 3.38 1.82 3.37 5.08 5.03 2.36 0.01 0.12 2.37 2.95 1.56 2.87 2.52 4.11 2.37 2.55 2.92 2.68 0.03 5 50.8 2.69 2.64 5.07 2.15 1.54 5.07 2.05 2.07 5.08 3.56 0.43 3.15 1.98 2.49 2.51 2.25 5.06 5.1 5.11 5.11 5.89 5.88 5.16 5.15 3.17 5.14 4.99 3.2 6.56 2.58 0 3.21 3.21 0 0 0 0 0 0 0 0 0 0 2.29 0 0 0 0 0 0 0 2.39 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.16 0 0 1.43 0 0 + 5.11 3.37 3.37 5.33 3.38 1.82 3.37 5.08 5.03 2.37 0.01 0.12 2.37 2.93 1.56 2.88 2.53 4.12 2.37 2.55 3.14 2.68 0.03 5.01 5.08 2.69 2.66 5.07 2.16 1.54 5.06 2.11 2.07 5.09 3.56 0.43 3.15 1.98 2.49 2.51 2.25 5.06 5.1 5.11 5.11 5.89 5.88 5.16 5.14 3.09 5.14 4.98 3.25 6.56 2.57
PLAY 0 3.21 3.21 0 0.01 0 0 0 0 0 0 0 0 2.45 0 0 0 0 0 0 0 2.39 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.47 0 0 1.75 0 0
Transistor C523 C524 C534 C535 C5G2 C5R1 C612 C614 C616 C618 C642 C643 C673 C6C9 C702 C710 C718 C719 C727 C729 C732 C751 C7S1 C7S2 C7V1 C7V3 C806 C807 C812 C814 C815 C816 C817 C818 C820 C822 C825 C828 C829 C830 C831 C832 C833 C850 C851 C852 C853 C856 C887 C888 C892 C902 C904 C941 C945
STOP + 2.58 2.58 0.17 0.01 4.6 4.8 3.39 3.32 3.31 1.78 1.8 3.37 3.38 3.38 4.95 30.29 5.05 5.05 5.06 2.74 2.59 5.11 4.93 4.92 5.87 3.3 0.06 0.09 3.89 3.89 0.76 3.89 0.76 3.9 3.88 11.7 5.07 5.88 5.87 2.96 2.35 2.97 2.35 6.56 5.77 6.57 5.77 11.79 6.11 6.11 6.58 1.35 1.35 5.07 0.01 2.57 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.51 0 0 1.68 0 0 0 0 0 0 0 0 0 0 0 2.55 2.53 2.51 2.06 2.59 2.3 6.11 0 6.11 0 0 0 0 1.11 0.06 0.33 0 0 + 2.58 2.58 0.17 0.01 4.59 4.74 3.39 3.32 3.31 1.78 1.8 3.38 3.38 3.38 4.94
PLAY 2.56 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.51 0 0 1.68 0 0 0 0 0 0 0 0 0 0 0 2.55 2.53 2.51 2.14 2.96 2.3 6.11 0 6.11 0 0 0 0 1.11 0.06 0.33 0 0
Transistor C946 C948 C971 C974 C975 C976 C978 C979 C980 C981 C983 C984 C985 C987
STOP + 0.01 1.57 4.17 1.61 2.22 2.23 2.24 1.63 2.23 1.41 2.31 1.13 2.32 5.1 0 1.64 4.15 0.95 0.04 0.65 0 0.46 0.32 0.16 0.32 0.11 0.41 0 + 0.01 1.58 2.85 1.61 2.22 2.23 2.24 1.63 2.23 1.41 2.31 1.13 2.32 5.09
PLAY 0 1.64 2.82 0.95 0.04 0.65 0 0.46 0.32 0.16 0.32 0.11 0.41 0
I
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
IC 7V1 C7V 0.01 0.01 0.05 5.03 5.04 0.01 5.16 0.05 5.16 5.16 0.01 0.02 0.07 0.01 0.01 1.56 1.02 0.07 5.16 5.16
1
0.01 0.01 0.07 5.01 5.03 0.01 5.16 0.05 5.16 5.16 0.01 0.09 0.08 0.01 0.01 1.56 1.02 0.07 5.15 5.15 3.84 3.84 3.82 3.85 3.84 3.86 3.86 3.83 3.85 3.85 3.84 0.02 3.88 0.01 0.01 6.1 6.09 0.01 6.08 6.08 4.6
IC605
0.01 0.01 0.01 0.01 0.12 3.35 0.01 3.35 0.01 0.01 0.01 0.01 0.4 3.35 0.01 3.35 5.05 1.52 1.52 0.01 2.41 2.37 0.99 0.01 0.01 0.01 5.05 5.02 5.04 1.18 1.09 1.09 1.05 1.05 5.02 0.01 1.07 5.05 0.01 0.01 0.01 0.01 0.05 0.04 0.01 2.71 2.72 0.04
30.29 5.06 5.05 5.06 2.74 2.59 5.11 4.93 4.92 5.87 3.3 0.06 3.22 3.89 3.91 0.76 3.89 0.76 3.9 3.88 11.7 5.07 5.88 5.86 2.97 2.35 2.97 2.35 6.56 5.77 6.57 5.77 11.79 6.11 6.11 6.57 1.35 1.35 5.07 0.01
IC604
0.4 1.28 1.22 1.63 1.05 1.54 1.06 2.33 0.02 0.07 3.37 4.91 3.37 3.37 1.05 0.07 1.06 2.63 1.46 1.54 0.01 0.01 0.07 3.33 0.01 3.37 0.01 3.37 0.01 0.34 0.33 2.86 2.86 0.01 0.01
IC751
5.05 1.52 1.52 0.01 2.4 2.35 0.98 0.01 0.01 0.01 5.05 5.01 5.02 1.16 1.06 1.08 1.04 1.03 5.02 0.01 1.06 5.05 0.01 0.01 0.01 0.01 0.05 0.03 0.01 2.7 2.7 0.04
I IC 802 2 C80
5.78 4.99 5.09 0.01 5.07 5.88 0.02 6.57 0.41 0.01 6.59 4.99 11.78 5.76 0.01 6.58
IC801
3.84 3.83 3.83 3.83 3.83 3.84 3.84 3.83 3.83 3.83 3.84 0.36 3.88 0.13 0.12 6.09 6.09 0.1 6.08 6.08 4.6
I IC 903 3 C90
5.1 0.11 0.09 2.23 5.1 1.24 0.02 1.58 2.24 0.01 1.41 0.01 2.21 5.11
3-51
3-52
MEMO
Transistor Q201 Q202 Q204 Q205 Q206 Q207 Q208 Q209 Q302 Q303 Q304 Q305 Q309 Q401 Q402 Q403 Q404 Q405 Q501 Q504 Q505 Q506 Q601 Q7S1 Q7S2 Q801 Q802 Q807 Q808 Q905 Q906 Q907 Q908 Q909 Q910 Q911 Q912 Q913 Q914 Base 2.29 1.83 3.4 3.21 2.9 2.54 5.02 2.34 -2.07 0.14 0.01 0.01 0.01 0.01 0.01 5.09 -0.75 -0.91 0.03 0.01 0.01 3.81 0.01 4.09 0.02 0.13 0.12 0.01 0.01 0.19 0.01 11.79 0.02 0.08 0.01 0.01 0.01 0.01 5.06 STOP Emitter Collector 2.45 3.18 1.91 2.89 3.27 5.26 4.88 0.19 2.89 5.08 -0.99 -0.77 1.88 1.65 -0.68 -0.65 0.01 5.09 11.79 0.7 2.52 2.54 0.6 0.04 0.02 5.1 -0.84 -0.76 0.09 2.36 0.37 0.14 0.02 5.11 5.11 3.55 0.74 0.74 0.74 3.41 2.59 3.67 3.34 3.67 3.37 0.01 3.34 5.09 0.22 0.21 2.55 2.29 5.91 5.9 0.01 5.09 11.85 0.01 3.13 3.19 0.04 0.19 0.01 0.01 0.01 0.01 2.97 2.97 1.01 0.15 11.85 0.01 0.01 4.22 0.01 0.01 0.01 2.72 Base 2.29 1.83 3.39 3.21 2.9 2.54 5.02 2.34 -1.27 0.23 0.01 0.01 0.01 0.01 0.01 5.09 -0.75 -0.91 0.03 0.01 0.01 2.84 0.01 4.14 0.02 0.13 0.05 0.01 0.01 0.19 0.01 11.79 0.02 0.08 0.01 0.01 0.01 0.01 5.06 PLAY Emitter Collector 2.45 3.17 1.91 2.86 3.27 5.26 4.6 0.19 2.89 5.09 -0.96 -1.08 1.88 1.65 -0.68 -0.66 0.01 5.09 11.79 0.7 2.54 2.52 0.6 0.05 0.18 5.11 -0.84 -0.84 0.09 2.36 0.37 0.14 0.02 5.11 5.11 3.55 0.74 0.74 0.74 3.41 2.59 3.65 3.34 3.65 3.36 0.01 3.34 5.09 0.22 0.12 2.55 2.29 5.91 5.9 0.01 5.08 11.85 0.01 3.13 3.19 0.04 0.19 0.01 0.01 0.01 0.01 2.97 2.97 1.01 0.15 11.85 0.01 0.01 4.22 0.01 0.01 0.01 2.72
3-53
3-54
PRINTED CIRCUIT DIAGRAMS
1. MAIN P.C.BOARD (TOP SIDE)
3-55
3-56
2. MAIN P.C.BOARD (BOTTOM SIDE)
3-57
3-58
3. POWER P.C.BOARD
4. KEY P.C.BOARD
5. TIMER P.C.BOARD
3-59
3-60
MEMO
MEMO
3-61
3-62
DVD PART
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER CHECK FLOW
A. No 5V B. No 3.4VA.
Is 3.4VA section working?
YES
NO
NO
Is 3.4VA section working?
YES
Is 5.6V present at collector of Q126?
YES
No 3.4VA
NO
Is 3.4V present at emitter of Q121?
YES
Replace Q126.
Check FR101
Replace Q121.
YES
Is there a DC voltage at Cathode of D105 or D107?
NO
NO
Check D105/D106/D107/ D108 and replace.
Replace IC101.
3-63
ELECTRICAL TROUBLESHOOTING GUIDE
2. SYSTEM OPERATION FLOW
Power On
1. 186 CPU initializes SERVO,DSP & RISC registers 2. Write RISC code to SDRAM 3. Reset RISC
Show LOGO
YES
Tray Closed ?
NO
Tray Close to Closed position
SLED at Inner Side ?
NO
YES
SLED Moves to Inner Position
1. Judge whether have disc and disc type 2. Jump to related disc reading procedure
Recieve OPEN/CLOSE Key?
NO
YES
1. Execute Pressed Key & IR Key 2. System operation Routine Loop
1. Stop Playback & Open Tray 2. Display tray open message & LOGO
YES
Receive CLOSE Key?
YES
3-64
ELECTRICAL TROUBLESHOOTING GUIDE
3. Test & debug flow
TEST
Check the AC Voltage Power PCBA(110V or 220V) YES
NO
Replace power PCBA or AC transformer.
Switch on the Power PCBA YES Is the DC Voltage outputs OK? (5V, 3.3V, 12V, 5.6V MOTOR) YES Make sure the main PCBA don't short on VCCs and switch it on. YES NO NO
Repair or Replace Power PCBA
Is 3.3V outputs normal on main PCBA? YES
Check the regulators or related diodes.
Is 1.8V Voltage normal for Zoran IC YES Connect to PC RS232 Cable and update the FLASH memory code. YES
NO
1. Check Q203. 3. Check IC102
2. Check D201.
Update FLASH successfully? YES
NO
1. Check 27MHz system clock. 2. Check system reset circuit. 3. Check FLASH R/W enable signal PRD,RWR. 4. Check RS232 SIGNALS. 5. Check FLASH Memory related circuit.
A
3-65
ELECTRICAL TROUBLESHOOTING GUIDE
A
RESET or Power On.
Show LOGO?
NO
Flash Memory operates properly?
NO
Check connection lines between FLASH & ZR36888 and the FLASH access time whether is suitable or not.
YES
YES
SDRAM works properly?
NO
YES
ZR36888 VIDEO outputs properly?
Check connection lines between SDRAM & ZR36888 and the SDRAM is damaged.
NO
Check the related circuit of ZR36888
YES
Have TV signal output?
NO
Check the filtering and amp circuit of TV signal.
YES
Check AV cable connection to TV set.
Does Tray move inside when it is not at closed position?
NO
Normal OUTSW & INSW signals?
NO
Check the load OPEN & CLOSE switch
YES
YES
Normal OPEN & CLOSE signal?
NO
Check the Tray control IO pins on ZR36888 & AM5869S
YES
Normal LOAD+ & LOAD -signal?
NO
Check the Tray control amplifying circuit on Motor driver.
YES
B Check the cable connection between main PCBA and loader. 3-66
ELECTRICAL TROUBLESHOOTING GUIDE
B
Does the SLED move to NO inner side when it is at outter position?
Motor Driver MUTE Pin is High?
NO
Check the connection line of MUTE signal.
YES
YES
Is SLED_S DC Level higher than 1.65V?
NO
Check the related circuit of FMSO.
YES
SLED+ and SLED- output properly?
NO
Check the amp circuit on motor driver.
YES
Do not put in disc and tray close. Check the cable connection with MECHA.
Optical Lens has movements for searching Focus?
NO
Proper FOCUS_S outputs to motor driver?
NO
Check FOCUS_S connection On ZR36888 and motor dirver.
YES
YES
Proper FACT+ & FACT- outputs?
NO
Check the amp circuit on motor dirver.
YES
Check cable connect on with pick-up head.
C
3-67
ELECTRICAL TROUBLESHOOTING GUIDE
C
Laser turns on when reading disc?
NO
LD_DVD or LD_CD output properly?
NO
Check the laser power circuit on ZR36888 and connecting to power transistor.
YES
YES
Collector voltage of power transistor is OK?
NO
Check the related circuit on laser power transistor
YES
Check cable connection between transistor ouput and pick-up head.
Put disc in?
NO
Laser off
YES NO
Proper RF signal on ZR36888?
Disc ID is correct?
NO
Check the related circuit on ZR36888 RFL signal.
YES
YES
Check LD_DVD & LD_CD signal
Does spindle rotate?
NO
Proper SPINDLE_S signal on ZR36888
NO
Check SPINDLE_S related circuit on ZR36888.
YES
YES NO
Check the spindle control amp circuit of motor driver.
SP+ & SP- output properly?
YES
Check the cable connection between spindle and main PCBA. 3-68
D
ELECTRICAL TROUBLESHOOTING GUIDE
D
Focus ON OK?
NO
Proper signals on A,B,C,D of ZR36888
NO
Check connections between ZR36888 and pick-up head.
YES
YES
Check FE signal on ZR36888
NO
Check the FOCUS_S connection on ZR36888 and motor driver.
YES
Check FOCUS_S signal on ZR36888
Track On OK?
NO
Normal TE Signal on ZR36888?
NO
Check the related circuit on ZR36888
YES
YES
Properly TRACK_S signal on ZR36888?
NO
Check the TRACK_S connection on ZR36888 and motor dirver.
YES
TACT+ & TACT- output properly?
NO
Check the tracking control amp circuit on motor driver.
YES
Check cable connection on pick-up head.
Disc is play ?
NO
Check RF signal waveform.
YES
E
3-69
ELECTRICAL TROUBLESHOOTING GUIDE
E
Normal Audio output when disc playback?
NO
Audio DAC received correct data stream?
NO
Check connection between ZR36888 & Audio DAC.
YES
YES NO
Check the related circuit of Audio DAC.
Normal Audio DAC out?
YES
Check Audio filter, amplify, mute circuit.
Normal IR.VFD & Front panel key functions?
NO
Communications between IR.VFD Front panel key & ZR36888 is normally?
NO
Check communication lines on ZR36888
YES
YES
Check the cable connection on Front panel.
TEST END
3-70
DETAILS AND WAVEFORMS ON SYSTEM TEST AND DEBUGGING
1. SYSTEM 27MHz CLOCK, RESET SIGNAL 1) ZR36888 main clock is at 27MH(X601)
3.1V,27MHz
FIG 1-1
2) ZR36888 reset is low active
3.3VA
PWR_CTL RESET
Reset Time
FIG 1-2
3-71
2. SDRAM CLOCK 1) SDRAM clock is at 143MHz
CLK=143MHz,Vp-p=3.3V
IC603 PIN38
FIG 2-1
3. TRAY OPEN/CLOSE SIGNAL 1) Tray open/close waveform
OPEN
CLOSE
LMLM+ OPEN CLOSE
FIG 3-1
3-72
2) Tray open waveform
OPEN CLOSE
LMLM+
FIG 3-2
3) Tray close waveform
OPEN
CLOSE
LMLM+
FIG 3-3
3-73
4. SLED CONTROL RELATED SIGNAL(NO DISC CONDITION)
SLED_S DRVSB
SLED+
SLED-
FIG 4-1
5. LENS CONTROL RELATED SIGNAL(NO DISC CONDITION)
FOCUS_S FOCUS+
FOCUS-
FIG 5-1
3-74
6. LASER POWER CONTROL RELATED SIGNAL(NO DISC CONDITION)
DCLK = 128MHz, Vp-p=2.2, Vmax=2.7V
VR_CD
DVD_LD
CD_LD
FIG 6-1
7. DISC TYPE JUDGEMENT WAVEFORM
FACT+
FE
SBAD
FIG 7-1(DVD)
3-75
FACT+
FE
SBAD
FIG 7-2 (DVD)
FACT+
FE
SBAD
FIG 7-3 (CD)
3-76
FACT+
FE
SBAD
FIG 7-4 (CD)
8. FOCUS ON WAVEFORM
FE
FOSO
FACT+
FACT-
FIG 8-1 (DVD)
3-77
FE
FOCUS
FACT+
FACT-
FIG 8-2 (CD)
9. SPINDLE CONTROL WAVEFORM(NO DISC CONDITION)
SPINDLE_S
SP+
SP-
(DVD) FIG 9-1
3-78
10. TRACKING CONTROL RELATED SIGNAL(System checking)
TE
TRACK_S TACT+
TACT-
FIG 10-1 (DVD)
TE
TRACK_S
TACT+
TACT-
FIG 10-2 (CD)
3-79
11. RF WAVEFORM
RFO
FIG 11-1
12. ZR36888 AUDIO OPTICAL AND COAXIAL OUTPUT(SPDIF)
SPDIF
FIG 12-1
3-80
13. ZR36888 VIDEO OUTPUT WAVEFORM 1) Full colorbar signal(CVBS)
JK702 pin6
FIG 13-1
2) Y
JK702 pin7
FIG 13-2
3-81
3) C
JK702 PIN8
FIG 13-3
14. AUDIO OUTPUT FROM AUDIO DAC 1) AUDIO L/R
1KHz 0DB
JK702 PIN4,5
FIG 14-1
3-82
2) Audio Related Signal
AOUT0
ABCK
ALRCLK
FIG 14-2
3-83
DV33 5V/MV3.3
DV33
DISC IC604 ES29LV160ET FLASH ROM MEMORY BOARD IC603 HY57V641620E SDRAM
SPINDLE MOTOR
MEMAD[00:19 ] FLASHCSMEMRDMEMWRRAMDQM
M
PICK UP
CN609 HDCP KEY DOWNLOAD 5V
RAMDAT[00:15]
MEMDA[0:15]
CARD_DET
MEMDA[0:15]
SLED LOADING (FEEDING) MOTOR MOTOR 5V CN601 DOWNLOAD RFV33/DV33/1.8V
SCL/MC SDA/MD DVD:RF,A,B,C,D CD:RF,A,B,C,D,E,F MD_CD AL PC DVD_LD,CD_LD, VC PICKSEL HOMESW OUTSW , INSW OPEN, CLOSE DRVSB,TRACK_S,FOCUS_S,SLED_S SPINDLE_S
1. SYSTEM BLOCK DIAGRAM
DECK MECHANISM
5V CN602 HYPER_TERMINAL
RAMADD[00:11] RAMBA PCLK RAMCS0RAMCS1RAMRASRAMCASRAMWERAMCKE R
FACT+/-,TACTT +/-
MOT_SPDL +/-
M
M
MEMAD[00:19 ] MEMRDMEMWRMEMCS0FCU_IOWR# FCU_IQRD# IDE_RST CARD_SEL FCU_SCLK FCU_CS2# FCU_CS3# FCU_WAIT FCU_RST FCU_IRQ
IC605 S524C80D80 EEPROM
5V
IC401 CS4392 (2DAC)
ALRCLK ABCK AMCLK AOUT3 ML D_MUTE L
SLED+,SLED--
LOAD+/-
BLOCK DIAGRAMS
3-84
IC201
AM5869S
IC601 ZR36888 DSP/MPEG/RF
DVD_A_L DVD_A_R OPTICAL
MOTOR DRIVER
+12V IC402 MC4580 OP-AMP
M5V
ASPDIF COAX
MOTOR_VCC REG_12V
VCR_DATA DVD_RESET
REG_9V 3.8VA
27MHz X-TAL Pr(R) DVD_ENA* DVD_CLK DVD_DATA* Pb(B)
AC 90V~240V 50HZ/60Hz
POWER BOARD
5.3VA/REG9V
Y(G)
PWR_CTL_H 33V 5.3VA 5V M5V SW5V
IC501 MN101D10F VCR MICOM
IC801 TDA9605H HIFI
Y/C
X601
27MHz X-TAL
DISC
2. SERVO BLOCK DIAGRAM
DVD_LD, CD_LD , VR_CD , VR_DVD PICKSEL
MEMDA[0:15]
DVD: A,B,C,D, RF CD: A,B,C,D, E, F,RF
MEMAD[0:19] FLASHCSMEMRDMEMWR-
FLASH ROM
3-85
HOMESW,INSW