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Self Diagnosis, Dolby
Service Manual
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MXD-D400
SERVICE MANUAL
Ver 1.0 2003.05
US Model
US and foreign patents licensed from Dolby Laboratories.
MD Section
Model Name Using Similar Mechanism MD Mechanism Type Optical Pick-up Name Model Name Using Similar Mechanism
NEW MDM-7S2C KMS-262E NEW CDM66C-30B61M BU-30BD61B OP Assy (A-MAX.4T)
CD Section
CD Mechanism Type Base Unit Name Optical Pick-up Name
SPECIFICATIONS
CD player section
System Laser Frequency response Wow and flutter Compact Disc digital audio system Semiconductor laser (=780 nm) 20 Hz 20 kHz (±0.5 dB) Below measureable limit (±0.001% W.PEAK) MiniDisc digital audio system MiniDisc Semiconductor laser (=780 nm) Emission duration: continuous 44.1 kHz 20 Hz 20 kHz (±0.5 dB)
Rated input 500 mVrms Minimum input 250 mVrms
Outputs
Jack type ANALOG OUT Pin jack Rated output 2 Vrms (at 47 kilohms) Load impedance Over 10 kilohms Optical wave length:660 nm 32 ohm
DIGITAL Squqre optical -18 dBm OPTICAL OUT connector jack PHONES Stereo phone jack 10 mW
MD deck section
System Disc Laser
General
120 V AC, 60 Hz 19 watts Less than 1 watt (at the power saving mode) Dimensions (w/h/d) incl. projecting parts and controls Approx. 430 × 108 × 399 mm Mass Approx. 5.4 kg Power requirements Power consumption
Sampling frequency Frequency response
Inputs
Jack type Input impedance ANALOG IN Pin jack DIGITAL Squqre OPTICAL IN optical connector jack 47 kilohms Optical wave length: 660 nm
Supplied accessories
· Audio connection cords (2) · Remote commander (remote) (1) · Sony R6 (size-AA) batteries (2)
Design and specifications are subject to change without notice.
COMPACT DISC MINIDISC DECK
9-877-241-01
2003E05-1 C 2003.5
Sony Corporation
Home Audio Company Published by Sony Engineering Corporation
MXD-D400
SELF-DIAGNOSIS FUNCTION
The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the following "Procedure for using the Self-Diagnosis Function (Error History Display Mode)".
This deck has a Self-diagnosis display function to let you know if there is a deck malfunction. The display shows a code made up of three or five letters and a message alternately to show you the problem. To solve the problem refer to the following list. If any problem persists, consult your nearest Sony dealer.
C14/TOC Error The MD deck cannot read the disc information properly. cReplace the MD. cErase all the recorded contents of the MD using the All Erase Function. C41/Cannot Copy The digitally dubbed material cannot be recorded digitally. C71/Din Unlock The digitally dubbed material cannot be recorded digitally. A moment's lighting is due to the signals of the digital program being recorded. This does not affect the recorded material. The digital optical cable is disconnected, or the power of the connected component is turned off while recording the digital audio from the component connected to the DIGITAL OPTICAL IN jack. cConnect the digital optical cable, or turn on the power of the connected component. E0001/MEMORY NG The component has internal problem. cConsult your nearest Sony dealer. E0101/LASER NG There is a problem with the laser pickup. cThe laser pickup may be damaged. Consult your nearest Sony dealer. E0201/LOADING NG There is a problem with the loading. cThe loading may be failed. Consult your nearest Sony dealer.
C11/Protected The MD is protected against erasure. cRemove the MD and slide the tab to close the slot. C12/Cannot Copy You tried to record a CD with a format that the deck does not support, such as a CD-ROM or MD data. cReplace the playable disc. C13/REC Error Recording could not be performed properly. cMove the deck to a stable place, and start recording over from the beginning. The MD is dirty or scratched, or the MD does not meet the standards. cReplace the MD and start recording over from the beginning. C13/Read Error The MD deck cannot read the disc information properly. cRemove the MD once, then insert it again.
PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE)
Note: Perform the self-diagnosis function in the "error history display mode" in the test mode. The following describes the least required procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, pull out the AC cord to turn the power off and retry to enter the test mode.
1. Press the ?/1 button to turn he power on. 2. Press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) knob to display "SYS version". 3. Turn the [ l AMS L ] (CD) knob and when "MD Test" is displayed, press the [ l AMS L ] (MD) knob. 4. Turn the [ l AMS L ] (MD) knob and when "[Service]" is displayed, press the [YES] button. 5. Turn the [ l AMS L ] (MD) knob to display "Err Display". 6. Press the [YES] button to sets the error history mode and displays "op rec tm". 7. Select the contents to be displayed or executed using the [ l AMS L ] (MD) knob. 8. Press the [ l AMS L ] (MD) knob to display or execute the contents selected. 9. Press the [ l AMS L ] (MD) knob another time returns to step 6. 10. Press the [MENU/NO] button to display "Err Display" and release the error history mode. 11. To release the test mode, press the [l AMS L] (CD) knob and [INPUT] button at the same time, press the [l AMSL ] (MD) knob. 12. Press the ?/1 button to turn the power off.
2
MXD-D400
ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS
Selecting the Test Mode Display op rec tm Details of History Cumulative recording time is displayed. When cumulative recording time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. The displayed time shows how long the laser is in high power state. It is about one fourth the actual recording time. Cumulative playing time is displayed. When cumulative playing time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. Cumulative spindle motor running time is displayed. When cumulative spindle motor run time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, "Under 1 min" is displayed. Displays the total number of retries during recording and number of retry errors during play. Displayed as "rss pss". "r" indicates the retries during recording while "p" indicates the retry errors during play. The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF. Displays the total number of errors. Displayed as "total ss". The number of errors is displayed in hexadecimal digits from 00 to FF. Displays the 10 latest errors. Displayed as "0s ErrCd@@". s indicates the history number. The smaller the number, the more recent is the error. (00 is the latest). @@ indicates the error code. Refer to the following table for the details. The error history can be switched by turning the [ l AMS L ] (MD) knob. Displays the past five retry addresses. Displays "ss ADRS ssss", ss is the history number, ssss is the cluster with the retry error. Select the error history number using the [ l AMS L ] (MD) knob. Mode to clear the error history and retry address history. [Operating method] 1) Press [ l AMS L ] (MD) knob when "er refresh" is displayed. 2) The display will change to "er refresh?", and then press [YES] button. The operation is over if "Complete!" is displayed. After this mode was executed, check the following: · The data have been cleared. · Perform the recording and playing to check that the mechanism operates normally. Mode to clear the "op rec tm" and "op play tm" histories. These histories serve as approximate indications of when to replace the optical pick-up. If the optical pick-up has been replaced, perform this operation and clear the history. [Operating method] 1) Press [ l AMS L ] (MD) knob when "tm refresh" is displayed. 2) The display will change to "tm refresh?", and then press [YES] button. The operation is over if "Complete!" is displayed. After this mode was executed, check the following: · The data have been cleared. · Perform the recording and playing to check that the mechanism operates normally. Mode to clear cumulative time of "op rec tm" and "op play tm". These historical data are used to determine the timing when the optical pick-up is to be replaced. When the optical pick-up was replaced, perform this operation to clear historical data. [Operating method] 1) Press [ l AMS L ] (MD) knob when "op change" is displayed. 2) The display will change to "op chang?", and then press [YES] button. The operation is over if "Complete!" is displayed. Mode to clear cumulative time of "spdl rp tm". This historical data is used to determine the timing when the spindle motor is to be replaced. When the spindle motor was replaced, perform this operation to clear historical data. [Operating method] 1) Press [ l AMS L ] (MD) knob when "spdl change" is displayed. 2) The display will change to "spdl chang?", and then press [YES] button. The operation is over if "Complete!" is displayed.
op play tm
spdl rp tm
retry err
total err
err history
retry adrs
er refresh
tm refresh
op change
spdl change
3
MXD-D400
Table of Error Codes Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 60 Loading failed Loading switch combination is illegal Head of PTOC could not be read within the specified time Head of PTOC could be read but its content is erroneous Access to UTOC could not be made within the specified time UTOC could be not read within the specified 3time Content of UTOC is erroneous Playing could not start Content of sector is erroneous Cause of retry occurred during normal recording D-RAM overflowed and retry was executed Retry was executed during the writing to TOC S.F editing was interrupted by retry Address could not be read except in access processing Focusing failed and it is out of control Unlock retry Details of Error
4
MXD-D400
TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION ........................... 2 1. 2. 3.
3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. 3-12. 3-13. 7-7. Base Unit Section (BU-30BD61M) ................................ 89
SERVICING NOTES ............................................... 7 GENERAL ................................................................... 16 DISASSEMBLY
17 18 18 19 19 20 20 21 21 22 22 23 23 24 25 25
8.
ELECTRICAL PARTS LIST ............................... 90
Disassembly Flow ........................................................... Case (409538) ................................................................. Loading Panel (CD) ........................................................ MD Mechanism Deck (MDM-7S2C) ............................. CD Mechanism Deck (CDM66C-30B61C) ................... Transformer Board .......................................................... Main Board ...................................................................... Front Panel Block Section .............................................. Holder Section ................................................................. Over Write Head (HR901) .............................................. Optical Pick-up (KMS-262E) ......................................... BD (MD) Board .............................................................. Loading Motor Assembly (M103), Spindle Motor Assembly (M101), Sled Motor Assembly (M102) ........ 3-14. Tray (66) .......................................................................... 3-15. BD (CD) Board ............................................................... 3-16. Optical Block Section .....................................................
4. 5.
TEST MODE .............................................................. 26 ELECTRICAL ADJUSTMENTS
MD Section ..................................................................... 32 CD Section ...................................................................... 44
6.
6-1. 6-2. 6-3. 6-4. 6-5. 6-6. 6-7. 6-8. 6-9. 6-10. 6-11. 6-12. 6-13. 6-14. 6-15. 6-16. 6-17. 6-18. 6-19. 6-20.
DIAGRAMS
Block Diagram CD Section ..................................... Block Diagram MD Section .................................... Block Diagram MAIN Section ................................ Note for Printed Wiring Boards and Schematic Diagrams ....................................................... Printed Wiring Board BD (CD) Section .................. Schematic Diagram BD (CD) Section .................... Schematic Diagram BD (MD) Board (1/2) ............. Schematic Diagram BD (MD) Board (2/2) ............. Printed Wiring Board BD (MD) Board ................... Printed Wiring Board MAIN Board (Component Side) .............................. Printed Wiring Board MAIN Board (Conductor Side) ................................ Schematic Diagram MAIN Board (1/4) .................. Schematic Diagram MAIN Board (2/4) .................. Schematic Diagram MAIN (3/4)/LOADING Boards ............................... Schematic Diagram MAIN Board (4/4) .................. Printed Wiring Boards Panel Section ...................... Schematic Diagram Panel Section .......................... Printed Wiring Board TRANSFORMER Board ..... Schematic Diagram TRANSFORMER Board ........ IC Pin Function Description ........................................... 46 47 48 49 50 51 52 53 54 56 57 58 59 60 61 62 63 64 65 74
7.
7-1. 7-2. 7-3. 7-4. 7-5. 7-6.
EXPLODED VIEWS
Overall Section ................................................................ Front Panel Section ......................................................... Chassis Section ............................................................... MD Mechanism Deck Section-1 (MDM-7S2C) ............ MD Mechanism Deck Section-2 (MDM-7S2C) ............ CD Mechanism Deck Section (CDM66C-30B61M) ..... 83 84 85 86 87 88
5
MXD-D400
SAFETY CHECK-OUT After correcting the original service problem, perform the following safety check before releasing the set to the customer: Check the antenna terminals, metal trim, "metallized" knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods. 1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers' instructions to use these instruments. 2. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The "limit" indication is 0.75 V, so analog meters must have an accurate lowvoltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suitable. (See Fig. A)
To Exposed Metal Parts on Set
CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Notes on chip component replacement · Never reuse a disconnected chip component. · Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing · Keep the temperature of the soldering iron around 270 °C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering. UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the leadfree mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size) : LEAD FREE MARK Unleaded solder has the following characteristics. · Unleaded solder melts at a temperature about 40 °C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350 °C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! · Strong viscosity Unleaded solder is more viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. · Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder.
0.15 µF
1.5 k
AC voltmeter (0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. The following caution label is located inside of the apparatus.
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
6
MXD-D400 SECTION 1 SERVICING NOTES
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. CLEANING OBJECTIVE LENS OF OPTICAL PICK-UP · In cleaning the objective lens of optical pick-up, be sure the following below. 1. In cleaning the lens, do not apply an excessive force. As the optical pick-up is vulnerable, application of excessive force could damage the lens holder. 2. In cleaning, do not use a cleaner other than exclusive cleaning liquid (KK-91 or isopropyl alcohol). 3. Wipe the objective lens spirally from center toward outside. (See Figure A)
For CD
NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Carry out the "S curve check" in "CD section adjustment" and check that the S curve waveforms is output three times.
(Figure A)
4. Eject the disk, if loaded. 5. Disconnect the power cord from the socket to shut off the power supply.
For MD
NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight.
HOW TO OPEN THE LOADING PANEL (CD) WHEN POWER SWITCH IS OFF
1 Turn the cam (66) in the direction of arrow A.
2 Pull out the loading panel (CD).
A
7
MXD-D400
SERVICE POSITION Main board
main board
Front panel block section
front panel block section
8
MXD-D400
MD mechanism deck
BD (MD) board
MD mechanism deck (MDM-7S2C)
CD mechanism deck
CD mechanism deck (CDM66C-30B61M)
9
MXD-D400
NOTE FOR POSITION OF THE CABLE (4P)
Fix the cable (4P) between the transformer board and the main board with a lead pin keeping the cable from the powertransformer (TR651). power transformer (TR651)
transformer board
cable (4P) lead pin main board
10
MXD-D400
MD SECTION JIG FOR CHECKING BD (MD) BOARD WAVEFORM
The special jig (J-2501-196-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items to be performed are shown as follows. GND I+3V IOP TE VC RF FE : Ground : For measuring IOP (Check the deterioration of the optical pick-up laser) : For measuring IOP (Check the deterioration of the optical pick-up laser) : Tracking error signal (Traverse adjustment) : Reference level for checking the signal : RF signal (Check jitter) : Focus error signal
CN105
IOP TE I+3V GND FE VC RF
1 I+3V IOP GND TE FE VC RF 7 I+3V IOP GND TE FE VC RF
for MDM-7S2C
11
MXD-D400
IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF BD (MD) BOARD) ARE REPLACED
The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look at the value on the optical pick-up label. When replacing the optical pick-up or non-volatile memory (IC195 of BD (MD) board), record the IOP value on the optical pick-up according to the following procedure. Record Procedure: 1. Press the ?/1 button to turn on the power. 2. Press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) knob to display "SYS version". 3. Turn the [ l AMS L (CD) knob and when "MD Test" is displayed, press the [l AMS L ] (MD) knob. ] 4. Turn the [ l AMS L ] (MD) knob to display "[Service]", and press the [YES] button. 5. Turn the [ l AMS L ] (MD) knob to display "Iop Write" (C05), and press the [YES] button. 6. The display becomes "Ref=@@@.@" (@ is an arbitrary number) and the numbers which can be changed will blink. 7. Input the IOP value written on the optical pick-up label. To select the number : Turn the [ l AMS L ] (MD) knob. To select the digit : Press the [ l AMS L ] (MD) knob. 8. When the [YES] button is pressed, the display becomes "Measu=@@@.@" (@ is an arbitrary number). 9. As the adjustment results are recorded for the 4 value. Leave it as it is and press the [YES] button. 10. "Complete!" will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become "Iop Write (C05)". 11. Press the [MENU/NO] button to display "MD Test". 12. Press the ?/1 button to turn the power off. Display Procedure: 1. Press the ?/1 button to turn on the power. 2. Press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) knob to display "SYS version". 3. Turn the [ l AMS L ] (CD) knob and when "MD Test" is displayed, press the [l AMS L ] (MD) knob. 4. Turn the [ l AMS L ] (MD) knob to display "[Service]", and press the [YES] button. 5. Turn the [ l AMS L ] (MD) knob to display "Iop Read" (C26), and press the [YES] button. 6. "@@.@/##.#" is displayed and the recorded contents are displayed. @@.@ : indicates the IOP value on the optical pick-up label. ##.# : indicates the IOP value after adjustment 7. To end, press the [MENU/NO] button to display "Iop Read" (C26). 8. Press the [MENU/NO] button to display "MD Test". 9. Press the ?/1 button to turn the power off.
12
MXD-D400
CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS IN MD
Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in "5 Electrical Adjustments". Criteria for Determination (Unsatisfactory if specified value is not satisfied) Laser power check (5-7-2 : See page 36) · 0.93 mW power Specified value : 0.84 to 0.92 mW (KMS-262A) 0.90 to 0.96 mW (KMS-262E) · 8.65 mW power Specified value : 8.1 to 8.7 mW (KMS-262A) 8.4 to 8.9 mW (KMS-262E) · Iop (at 8.65mW) Labeled on the optical pick-up Iop value ± 10mA Auto check (5-7-4 : See page 37) Temperature compensation offset check (5-7-1 : See page 36) · Unsatisfactory if displayed as "NG: XXXX" NG (XXXX is arbitrary number) · Unsatisfactory if displayed as "T=@@ (##) [NG]" NG (@@, ## are both arbitrary numbers) Measure if unsatisfactory: · Clean the optical pick-up · Adjust again · Replace the optical pick-up
· Replace the optical pick-up
· Replace the optical pick-up
· Check for disconnection of the circuits around D101 (BD (MD) board) · Check the signals around IC101, IC151, CN102, CN103 (BD (MD) board)
Note: The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments. When performing adjustments, use the specified values for adjustments.
13
MXD-D400
CD SECTION CD-TEXT TEST DISC
This unit is able to display the test data (character information) written in the CD on its fluorescent indicator tube. The CD-TEXT TEST DISC (TGCS-313:4-989-366-01) is used for checking the display. To check, perform the following procedure. Checking Method: 1. Turn ON the power, set the disc to the disc table with the "test disc" label facing up, and chuck the disc. 2. Press the H (CD) button and play back the disc. 3. The following will be displayed on the fluorescent indicator tube. Display : 1KHZ 0DB 4. Rotating [ l AMS L ] (CD) knob, select the track. The text data of each track will be displayed. For details of the displayed contents for each track, refer to "Table 1 : CD-TEXT TEST DISC TEXT Data Contents" and "Table 2 : CDTEXT TEST DISC Recorded Contents and Display". Restrictions in CD-TEXT Display In this unit, some special characters will not be displayed properly. These will be displayed as a space or a character resembling it. For details, refer to "Table 2 : CD-TEXT DISC Recorded Contents and Display". Table 1 : CD-TEXT TEST DISC TEXT Data Contents (TRACKS No. 1 to 41:Normal Characters) TRACK No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Displayed Contents 1kHz/0dB/L&R 20Hz/0dB/L&R 40Hz/0dB/L&R 100Hz/0dB/L&R 200Hz/0dB/L&R 500Hz/0dB/L&R 1kHz/0dB/L&R 5kHz/0dB/L&R 7kHz/0dB/L&R 10kHz/0dB/L&R 16kHz/0dB/L&R 18kHz/0dB/L&R 20kHz/0dB/L&R 1kHz/0dB/L&R 1kHz/1dB/L&R 1kHz/3dB/L&R 1kHz/6dB/L&R 1kHz/10dB/L&R 1kHz/20dB/L&R 1kHz/60dB/L&R 1kHz/80dB/L&R TRACK No. 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Displayed Contents 1kHz/90dB/L&R Infinity Zero w/o emphasis//L&R Infinity Zero with emphasis//L&R 400Hz+7kHz(4:1)/0dB/L&R 400Hz+7kHz(4:1)/10dB/L&R 19kHz+20kHz(1:1)/0dB/L&R 19kHz+20kHz(1:1)/10dB/L&R 100Hz/0dB/L* 1kHz/0dB/L* 10kHz/0dB/L* 20kHz/0dB/L* 100Hz/0dB/R* 1kHz/0dB/R* 10kHz/0dB/R* 20kHz/0dB/R* 100Hz Squer Wave//L&R 1kHz Squer Wave//L&R 1kHz w/emphasis/0.37dB/L&R 5kHz w/emphasis/4.53dB/L&R 16kHz w/emphasis/9.04dB/L&R
Note: The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.
14
MXD-D400
Table 2: CD-TEXT TEST DISC Recorded Contents and Display (In this unit, some special characters cannot be displayed. This is not a fault) TRACK No. 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 to 99
·
Recorded contents ! " # $ %& ´ ( ) (21h to 27h)1kHz 0dB L&R (28h to 2Fh) (30h to 37h) (38h to 3Fh) (40h to 47h) (48h to 4Fh) (58h to 5Fh) (60h to 67h) (68h to 6Fh) (70h to 77h) (78h to 7Fh) (A0h to A7h) 8859-1 (A8h to AFh) (B0h to B7h) (B8h to BFh) (C0h to C7h) (C8h to CFh) (D0h to D7h) (D8h to DFh) (E0h to E7h) (E8h to FFh) (F0h to F7h) (F8h to FFh) AAAAAA D NOOOOO OUUUUY aaaaaa dnooooo ouuuu y y T All the same T All the same to T All the same c eeee i i i i C EEEE I I I I T All the same T All the same T All the same T All the same T All the same T All the same T All the same T All the same T All the same T All the same T All the same T All the same
Display
*
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012345 67 89 : ; <=>? @A B C D E F G H I J K L MNO XYZ [ ¥ ] ^ _
P Q R S T U V W (50h to 57h)
ab c de f g
h i j k l mn o pq r s t u vw x y z { I } ~ i ¢£¤¥ § C ª ¬ PR ±
1 2 3
(A0h to A7h) 8859-1 (A8h to AFh) (B0h to B7h) (B8h to BFh) (C0h to C7h) (C8h to CFh) (D0h to D7h) (D8h to DFh) (E0h to E7h) (E8h to EFh) (F0h to F7h) (F8h to FFh)
1 4
µ¶ ·
1 2 3 4
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15
MXD-D400 SECTION 2 GENERAL
Main unit
This section is extracted from instruction manual.
Remote control
1
2
3
4
5
6 7890qa
NS
efed e;wlwkwj whwg esea
wf
wd ws waw; qhqgqfqd qs qlqkqj
ALPHABETICAL ORDER AI
ALBUM wh AMS wa wg CD SYNCHRO NORMAL/HIGH 4 CLEAR ws Disc tray 3 DISPLAY ql Display window wf EJECT 6 GROUP ON/OFF 9 GROUP SKIP 0 INPUT qa
J Z
ALPHABETICAL ORDER AM
MD slot 5 MDLP indicator 7 MENU/NO wd OPEN/CLOSE 2 PHONES jack es PHONE LEVEL ed PLAY MODE qj wj REC LEVEL qd REC MODE 8 REC z qs STANDB Y indicator ef TIME qk wk YES w;
BUTTON DESCRIPT
ALBUM/GROUP -/+ qf CD MD select wk CD SYNCHRO NORMAL/ HIGH wa CLEAR 8 DISPLAY wg FADER ws GROUP ON/OFF wd INPUT wj MENU/NO wf MUSIC SYNC 9
NZ
?/1 (power/standby) 1 H (play) qf wl X (pause) qh e; x (stop) qg ea
NAME EDIT/SELECT 6 number buttons 7 PLAY MODE 3 REC MODE 2 REC-IT 0 REPEAT qh SCROLL wh SLEEP qg T.REC qd TIME 4 YES 5
BUTTON DESCRIPTIO
. / > (skip)qk ?/1 (power/standby) 1 m / M (search) qj H (play) w; X (pause) qa x (stop) qs z (record) ql
16
MXD-D400 SECTION 3 DISASSEMBLY
· This set can be disassembled in the order shown below.
3-1.
DISASSEMBLY FLOW
SET
3-2. CASE (409538) (Page 18)
3-6. TRANSFORMER BOARD (Page 20)
3-3. LOADING PANEL (CD) (Page 18)
3-7. MAIN BOARD (Page 20)
3-4. MD MECHANISM DECK (MDM-7S2C) (Page 19)
3-8. FRONT PANEL BLOCK SECTION (Page 21)
3-5. CD MECHANISM DECK (CDM66C-30B61M) (Page 19)
3-9. HOLDER SECTION (Page 21)
3-12.BD (MD) BOARD (Page 23)
3-14.TRAY (66) (Page 24)
3-15.BD (CD) BOARD (Page 25)
3-16.OPTICAL BLOCK SECTION (Page 25)
3-10.OVER WRITE HEAD (HR901) (Page 22)
3-13.LOADING MOTOR ASSY (M103), SPINDLE NOTOR ASSY (M101), SLED MOTOR ASSY (M102) (Page 23)
3-11.OPTICAL PICK-UP (KMS-262E) (Page 22)
17
MXD-D400
Note: Follow the disassembly procedure in the numerical order given.
3-2.
CASE (409538)
3 case (409538)
1 two screws (case 3 TP2)
2 two screws (case 3 TP2)
3 two screws (case 3 TP2)
3-3.
LOADING PANEL (CD)
3 four claws
4 loading panel (CD)
cam (66)
2
1 Rotate the cam (66) with a screwdriver.
18
MXD-D400
3-4.
MD MECHANISM DECK (MDM-7S2C)
4 two step screws
9 MD mechanism deck (MDM-7S2C) 5 two step screws
7 two insulators 8 two insulators 2 two screws (+BVTP3 × 8) 1 two wires (flat type) (17 core : CN9, 27 core : CN10)
6
3 two harnesses
3-5.
CD MECHANISM DECK (CDM66C-30B61M)
3 three screws (+BVTP3 × 8)
1 two wires (flat type) (25 core : CN5, 9 core : CN4) 5 CD mechanism deck (CDM66C-30B61M)
2 connector (CN6) 4
19
MXD-D400
3-6.
TRANSFORMER BOARD
3 connector (CN652) 4 screw (+BVTT3 × 6)
5 four screws (+BVTT3 × 6)
6 transformer board
1 connector (CN1) 2 connector (CN2)
3-7.
MAIN BOARD
5 connector (CN6) 4 wire (flat type) (9 core) (CN4) 7 two screws (+BVTP3 × 8)
6 two connectors (CN1, CN2)
9 main board
1 two wires (flat type) (25 core : CN5, 17 core : CN9)
3 wire (flat type) (19 core) (CN11) 2 wire (flat type) (27 core) (CN10)
8 four screws (+BVTP3 × 8)
20
MXD-D400
3-8.
FRONT PANEL BLOCK SECTION
1 wire (flat type) (CN11)
2 connector (CN12) 5 screw (+BVTP3 × 8) 3 two screws (+BVTP3 × 8) 8 claw
4 two harnesses 0 front panel block section
9 claw
7 two screws (+BVTP3 × 8)
6 three screws (+BVTP3 × 8)
3-9.
HOLDER SECTION
3 holder section 1 tension spring (holder)
2 hook
21
MXD-D400
3-10. OVER WRITE HEAD (HR901)
1 screw (P 1.7 × 6)
2 over write head (HR901)
3-11. OPTICAL PICK-UP (KMS-262E)
8 optical pick-up (KMS-262E)
6 main shaft
3 screw (+B 2 × 6)
7 flexible board
4 base (BU-A) 5 two screws (+KTP 2 × 6)
1 screw (+B 2 × 6)
2 base (BU-D)
22
MXD-D400
3-12. BD (MD) BOARD
1 Remove two solders (sled motor). 2 Remove two solders (spindle motor).
6 flexible board (CN101)
M102 M101
3 Remove two solders (loading motor).
M103 S102
4 Remove three solders . 5 screw (M1.7)
8 BD (MD) board
7 connector (CN104)
3-13. LOADING MOTOR ASSY (M103), SPINDLE MOTOR ASSY (M101), SLED MOTOR ASSY (M102)
1 lever (head)
3 torsion spring (SPDL) 2 belt (loading)
8 bushing (rivet)
9 gear (sa)
4 two screws (PWH 1.7 × 2.5)
0 two screws (+PWH 1.7 × 2.5)
qa sled motor assy (M102)
5 loading motor assy (M103)
7 spindle motor assy (M101) 6 three tapping screws (M1.7)
23
MXD-D400
3-14. TRAY (66)
3 Push the switch (S151) and releace two claws.
switch (S151)
claw of tray (66)
1 Turn the cam to the direction of arrow.
claw of lever (SW)
4 hook
4 hook 2
6 hook
7 tray (66)
6 hook
5
24
MXD-D400
3-15. BD (CD) BOARD
1 Remove four solders.
3 BD (CD) board
2 flexible flat cable (16core) (CN101)
3-16. OPTICAL BLOCK SECTION
4 optical block section
1 floating screw
3 shaft (BU holder)
cam (66)
2
Rotate the cam (66) in the direction of 2 to move the shaft (BU holder) upper.
25
MXD-D400 SECTION 4 TEST MODE
Setting the Test Mode Procedure: 1. Press the ?/1 button to turn the power on. 2. Press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [l AMS L ] (MD) knob. 3. Turn the [ l AMS L] (CD) knob to select the menu. 4. Press the [l AMS L ] (CD) knob to execute the test mode. Releasing the Test Mode Procedure 1: 1. Press the [ l AMS L] (CD) knob and [INPUT] button at the same time, press the [l AMS L ] (MD) knob. 2. Press the ?/1 button to turn the power off. Procedure 2: 1. Pull out the AC cord to turn the power off. Contents of test mode No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Display SYS Version BU Test SERVICE MD Version MD Test Initialize FL ALL ON FL ALL OFF FL ITIMATSU LED CHECK KEY CHECK RM CHECK Play Speed Function System version display CD BU test mode CD Service mode MD version display MD test mode* MD initialize Fluorescent indicator tube test Fluorescent indicator tube test Fluorescent indicator tube test LED check Keyboard check Remote commander check CD x4 speed
* Details of MD test mode is described on and after page 28. System Version Display Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "SYS Version", and press the [l AMS L] (CD) knob. 2. The system version is displayed. 3. To exit from this mode, turn the [l AMS L ] (CD) knob. 4. Press the ?/1 button to turn the power off. CD Test Mode Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "BU Test", and press the [l AMS L ] (CD) knob. 2. "bdt S CURVE" is displayed. This test mode is used in the Electrical Adjustment section. 3. Turn the [l AMS L] (CD) knob. "bdt RAM REA", "bdt RAM WRI", "bdt COMOUT", "bdt FB TUNE", and "bdt ERR RATE" are displayed. 4. To exit from this mode, press the [MENU/NO] button and turn the [ l AMS L] (CD) knob to display "bdt ERR RATE". 5. Press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [ l AMS L] (MD) knob. 6. Press the ?/1 button to turn the power off. CD service Mode Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "SERVICE", and press the [l AMS L ] (CD) knob. 2. "SERVICE MOD" is displayed. 3. Press the [SKIP] button, the "SLED OUT" is displayed and the sled moves to the outermost position. 4. Press the [GROUP ON/OFF] button, the "SLED IN" is displayed and the sled moves to the innermost position. 5. Press the [REC] button, the "TRV ON" is displayed. 6. Press the [ l AMS L ] (CD) knob, then "SERVICE MOD" is displayed again. 7. To exit from this mode, press the [l AMS L ] (CD) knob and [INPUT] button at the same time, press the [ l AMS L] (MD) knob. 8. Press the ?/1 button to turn the power off.
Note: Always move the pick-up to the most inside position when exiting from this mode.
MD Version Display Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "MD Version", and press the [l AMS L] (CD) knob.
26
MXD-D400
2. The MD version is displayed. 3. To exit from this mode, turn the [l AMS L ] (CD) knob. 4. Press the ?/1 button to turn the power off. Initialize Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "Initialize", and press the [l AMS L ] (CD) knob. 2. MD is Initialised. l AMS L ] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) 3. To exit from this mode, press the [ knob. 4. Press the ?/1 button to turn the power off. FL ALL ON Mode Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "FL ALL ON", and press the [l AMS L] (CD) knob. 2. All segments of fluorescent indicator tube turn on. 3. To exit from this mode, press the [MENU/NO] button, then "FL ALL ON" is displayed again. 4. Press the ?/1 button to turn the power off. FL ALL OFF Mode Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "FL ALL OFF", and press the [l AMS L] (CD) knob. 2. All segments of fluorescent indicator tube turn off. 3. To exit from this mode, press the [MENU/NO] button, then "FL ALL OFF" is displayed again. 4. Press the ?/1 button to turn the power off. FL ITIMATSU Mode Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "FL ITIMATSU", and press the [l AMS L ] (CD) knob. 2. Checkered patterns of segments are displayed. 3. To exit from this mode, press the [MENU/NO] button, then "FL ITIMATSU" is displayed again. 4. Press the ?/1 button to turn the power off. LED Check Mode Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "LED CHECK", and press the [l AMS L] (CD) knob. 2. Turn the [l AMS L ] (CD) knob, the LED on front panel will repeat lighting on and off. 3. To exit from this mode, press the [MENU/NO] button, then "LED CHECK" is displayed again. 4. Press the ?/1 button to turn the power off. KEY Check Mode Procedure: 1. Enter the test mode, then turn the [l AMS L] (CD) knob to display "KEY CHECK", and press the [l AMS L] (CD) knob. 2. "Got 1 keys" is displayed. 3. Press the buttons and knobs, and when all the buttons and knobs are pressed, "Got 27 keys" will be displayed. 4. To exit from this mode, press the [l AMS L] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) knob. 5. Press the ?/1 button to turn the power off. Remote Commander Check Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "RM CHECK", and press the [l AMS L ] (CD) knob. 2. Press the H key on the remote commander, then "Got PlayCom" is displayed. 3. To exit from this mode, press the [MENU/NO] button, then "RM CHECK" is displayed again. 4. Press the ?/1 button to turn the power off. CD Play Speed Selection Mode Procedure: 1. Enter the test mode, then turn the [l AMS L ] (CD) knob to display "Play Speed", and press the [l AMS L ] (CD) knob. 2. "x4 Play" is displayed. If a CD is in the deck, pressing the H (CD) button executes the 4 times speed playback. 3. Press the x button to stop the playback. 4. To exit from this mode, press the [MENU/NO] button, then "Play Speed" is displayed again. 5. Press the ?/1 button to turn the power off.
27
MXD-D400
MD SECTION 1. PRECAUTIONS FOR USE OF TEST MODE
· As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. Even if the [EJECT] button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating. Therefore, it will be ejected while rotating. Be sure to press the [EJECT] button after pressing the [MENU/NO] button and the rotation of disc is stopped. 1-1. Recording laser emission mode and operating buttons · Continuous recording mode (CREC 2MODE) (C37) · Laser power check mode (LDPWR CHECK) (C13) · Laser power adjustment mode (LDPWR ADJUST) (C04) · Comparison with initial Iop value written in nonvolatile memory (Iop Compare) (C27) · Write current Iop value read in nonvolatile memory using microprocessor (Iop NV Save) (C06) · Traverse (MO) check (EF MO CHECK) (C14) · Traverse (MO) adjustment (EF MO ADJUST) (C07) · When pressing the [REC z ] button.
2. SETTING THE TEST MODE
1. Press the ?/1 button to turn the power on. 2. Press the [l AMS L] (CD) knob and [INPUT] button at the same time, press the [l AMS L] (MD) knob to display "SYS version". 3. Turn the [l AMS L ] (CD) knob and when "MD Test" is displayed, press the [l AMS L ] (MD) knob. When the test mode is set, "[Check]" will be displayed. Turn the [l AMS L ] (MD) knob switches between the following three groups; ···Tt [Check] Tt [Service] Tt [Develop] Tt ···.
Note: Do not use the test mode in the [Develop] group. If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the [MENU/NO] button immediately to exit the [Develop] group.
3. RELEASING THE TEST MODE
Procedure 1: Press the [l AMS L (CD) knob and [INPUT] button at the same time, press the [ l AMS L] (MD) knob, press the ?/1 button ] to turn the power off. Procedure 2: Pull out the AC cord to return the power off.
4. BASIC OPERATIONS OF THE TEST MODE All operations are performed using the [l AMS L ] (MD) knob, [YES] button, and [MENU/NO] button.
The functions of these buttons are as follows.
Function name Function Select. Set Sub menu. Proceeds onto the next step. Finalizes input. Returns to previous step. Stops operations.
[ l AMS L ] (MD) knob (turn) [ l AMS L ] (MD) knob (push) [YES] button [MENU/NO] button
28
MXD-D400
5. SELECTING THE TEST MODE
There are 26 types of test modes as shown below. The groups can be switched by turning the [l AMS L ] (MD) knob. After selecting the group to be used, press the [YES] button. After setting a certain group, turn the [l AMS L ] (MD) knob switches between these modes. Refer to "Group" in the table for details can be selected. All items used for servicing can be treated using group [Service]. So be carefully not to enter other groups by mistake.
Note: Do not use the test mode in the [Develop] group. If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the [MENU/NO] button immediately to exit the [Develop] group. Group Display AUTO CHECK Err Display TEMP ADJUS LDPWR ADJUS Iop Write Iop NV Save EF MO ADJUS EF CD ADJUS FBIAS ADJUS AG Set (MO) AG Set (CD) TEMP CHECK LDPWR CHECK EF MO CHECK EF CD CHECK FBIAS CHECK ScurveCHECK VERIFYMODE DETRK CHECK 0920 CHECK Iop Read Iop Compare ADJ CLEAR INFORMATION CPLAY 2MODE CREC 2MODE No. C01 C02 C03 C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C25 C26 C27 C28 C31 C36 C37 Automatic self-diagnosis Error history display, clear Temperature compensation offset adjustment Laser power adjustment Iop data writing Writes current Iop value in read nonvolatile memory using microprocessor Traverse (MO) adjustment Traverse (CD) adjustment Focus bias adjustment Auto gain output level adjustment (MO) Auto gain output level adjustment (CD) Temperature compensation offset check Laser power check Traverse (MO) check Traverse (CD) check Focus bias check S-curve check Nonvolatile memory check Detrack check Most circumference check Iop data display Comparison with initial Iop value written in nonvolatile memory Initialization of nonvolatile memory for adjustment values Display of microprocessor version, etc. Continuous playback mode Continuous recording mode Details Mark Check Service
· For details of each adjustment mode, refer to "SECTION 5. Electrical Adjustments". For details of "Err Display" (C02), refer to "Self-Diagnosis Function" on page 2. · If a different mode has been selected by mistake, press the [MENU/NO] button to release that mode. · Modes with (×) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the [MENU/NO] button to release the mode immediately.
29
MXD-D400
5-1. Operating the Continuous Playback Mode 1. Entering the continuous playback mode (1) Set the disc in the unit. (Whichever recordable discs or discs for playback only are available) (2) Turn the [ l AMS L ] (MD) knob and display "CPLAY 2MODE" (C36). (3) Press the [YES] button to change the display to "CPLAY 2MID". (4) When access completes, the display changes to "C = AD = ".
Note: The numbers " " displayed show you error rates and ADER.
2. Changing the parts to be played back (1) Press the [YES] button during continuous playback to change the display as below. "CPLAY 2MID" t "CPLAY 2OUT" t "CPLA Y2IN" When pressed another time, the parts to be played back can be moved. When access completes, the display changes to "C = AD = ".
Note: The numbers " " displayed show you error rates and ADER.
(2)
3. Ending the continuous playback mode (1) Press the [MENU/NO] button. The display will change to "CPLAY 2MODE" (C36). (2) Press the [EJECT] button and take out the disc.
Note: The playback start addresses for IN, MID, and OUT are as follows.
IN 40h cluster MID 300h cluster OUT 700h cluster 5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check) 1. Entering the continuous recording mode (1) Set a recordable disc in the unit. (2) Turn the [ l AMS L ] (MD) knob and display "CREC 2MODE" (C37). (3) Press the [YES] button to change the display to "CREC 2MID". " and " REC " lights up. (4) When access completes, the display changes to "CREC 1 (
Note: The numbers " " displayed shows you the recording position addresses.
2. Changing the parts to be recorded (1) When the [YES] button is pressed during continuous recording, the display changes as below. "CREC 2MID" t "CREC 2OUT" t "CREC 2IN" When pressed another time, the parts to be recorded can be changed. " REC " goes off. " and " REC " lights up. When access completes, the display changes to "CREC 2 (
Note: The numbers " " displayed shows you the recording position addresses.
(2)
3. Ending the continuous recording mode (1) Press the [MENU/NO] button. The display changes to "CREC 2MODE" (C37) and " REC " goes off. (2) Press the [EJECT] button and take out the disc.
Note 1: The recording start addresses for IN, MID, and OUT are as follows.
IN 40h cluster MID 300h cluster OUT 700h cluster Note 2: The [MENU/NO] button can be used to stop recording anytime.
Note 3: Do not perform continuous recording for long periods of time above 5 minutes. Note 4: During continuous recording, be careful not to apply vibration.
6. FUNCTIONS OF OTHER BUTTONS
Function H (MD) x (MD) REC MODE PLAY MODE (MD) DISPLAY EJECT REC z Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF. Stops continuous playback and continuous recording. Switches between the pit and groove modes when pressed. Switches the spindle servo mode (CLV S y CLV A). Switches the displayed contents each time the button is pressed Ejects the disc Starts recording from the present position while servo is turning on.
30
MXD-D400
7. AUTOMATIC SELF-DIAGNOSIS FUNCTION
This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform AUTO CHECK after the laser power check and Iop check. Procedure: 1. Display "AUTO CHECK" and press the [YES] button. If "LDPWR " is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check (C13) and Iop Compare (C27), and then repeat from step 1. 2. If a disc is in the mechanical deck, it will be ejected forcibly. "DISC IN" will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded. 3. If a disk is loaded at step 2, the check will start automatically. 4. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 2 will be ejected. "DISC IN" will be displayed. Load the check disc (MD) TDYS-1. 5. When the disc is loaded in step 4, the check will automatically be resumed from "07 CHECK". 6. After completing to test item 12, check OK or NG will be displayed. If all items are OK, "CHK ALL OK" will be displayed. If any item is NG, it will be displayed as "NG:xxxx". When "CHK ALL OK" is displayed, it means that the optical pick-up is normal. Check the operations of the other spindle motor, sled motor, etc. When displayed as "NG:xxxx", it means that the optical pick-up is faulty. In this case, replace the optical pick-up.
31
MXD-D400 SECTION 5 ELECTRICAL ADJUSTMENTS
MD SECTION
Note: Incorrect operations may be performed if the MD test mode is not entered properly. In this case, pull out the AC cord to turn the power off, and retry to enter the MD test mode.
5-1.
PARTS REPLACEMENT AND ADJUSTMENT
If malfunctions caused by Optical pick-up such as sound skipping are suspected, follow the following check.
Check before replacement
Start
5-7-2. Laser Power Check (See page 36) OK
NG
5-7-3. Iop Compare (See page 36) OK
NG
5-7-4. Auto Check (See page 37) OK
NG
Replace optical pick-up or MDM-7S2C
Other faults are suspected. Check the mechanism (sled motor, etc).
32
MXD-D400
Adjustment flow
Start
· Abbreviation OP: optical pick-up
Replace IC195 NO
YES
After turning off and then on the power, initialize the non-volatile memory (EEPROM)
Replace OP or IC195 NO
YES
5-8.
INITIAL SETTING OF ADJUSTMENT VALUE (See page 38)
Replace IC101, IC195, or D101 NO
YES
5-10. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT (See page 39)
Replace OP, IC933, or IC195 NO
YES
5-11. LASER POWER ADJUSTMENT (See page 39)
Replace OP, IC12, IC933, or IC195 NO
YES
5-12. Iop NV SAVE (See page 40)
Replace OP, IC101, IC201, or IC195 NO
YES
5-13. TRAVERSE ADJUSTMENT (See page 40) 5-14. FOCUS BIAS ADJUSTMENT (See page 41) 5-17. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT (See page 42)
Replace OP NO
YES
OP change in Err Display mode Iop write
Replace the spindle motor NO 5-7-4. Auto Check (See page 37)
YES
Spindle change in Err Display mode
End adjustments
33
MXD-D400
5-2.
PRECAUTIONS FOR CHECKING LASER DIODE EMISSION
To check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight.
5-3.
PRECAUTIONS FOR USE OF OPTICAL PICK-UP (KMS-262A/262E)
As the laser diode in the optical pick-up is easily damaged by static electricity, solder the laser tap of the flexible board when using it. Before disconnecting the connector, desolder first. Before connecting the connector, be careful not to remove the solder. Also take adequate measures to prevent damage by static electricity. Handle the flexible board with care as it breaks easily.
pick-up flexible board
laser tap
Optical pick-up flexible board
5-4.
HOW TO IDENTIFY OPTICAL PICK-UP KMS-262A/KMS-262E
This set uses optical pick-up KMS-262E in the production, but for the repair, only the KMS-262A is supplied. As a result, two types of optical pick-ups are used for this set, and the specified values for the check and adjustment of the laser power vary depending on the type. Therefore, in performing the check and adjustment of the laser power, first make sure the type of optical pick-up. The type of optical pick-up can be identified as follows.
KMS-262A
[Top view] [Side view]
KMS-262E
[Top view] [Side view]
TYPE2 VR (small)
TYPE3 VR (large)
34
MXD-D400
5-5.
PRECAUTIONS FOR ADJUSTMENTS
1. When replacing the following parts, perform the adjustments and checks with in the order shown in the following table. 2. Set the test mode when performing adjustments. After completing the adjustments, exit the test mode. Perform the adjustments and checks in "group Service" of the test mode. 3. Perform the adjustments to be needed in the order shown. 4. Use the following tools and measuring devices. · Check Disc (MD) (TDYS-1) (Parts No. 4-963-646-01) · Test Disk (MDW-74/GA-1) (Parts No. 4-229-747-01) · Laser power meter LPM-8001 (Parts No. J-2501-046-A) or MD Laser power meter 8010S (Parts No. J-2501-145-A)*1 · Oscilloscope (Measure after performing CAL of prove.) · Digital voltmeter · Thermometer · Jig for checking BD (MD) board waveform (Parts No. : J-2501-196-A) 5. When observing several signals on the oscilloscope, etc., make sure that VC and ground do not connect inside the oscilloscope. (VC and ground will become short-circuited.) 6. Using the above jig enables the waveform to be checked without the need to solder. (Refer to Servicing Note on page 7.) 7. As the disc used will affect the adjustment results, make sure that no dusts nor fingerprints are attached to it. *1 Laser power meter When performing laser power checks and adjustment (electrical adjustment), use of the new MD laser power meter 8010S (Part No. J-2501-145-A) instead of the conventional laser power meter is convenient. It sharply reduces the time and trouble to set the laser power meter sensor onto the objective lens of optical pick-up.
Parts to be replaced Adjustment 5-8. 5-9. Initial setting of adjustment value Recording of Iop information Optical Pick-up IC101 IC12 IC201 IC933 IC195 D101
5-10. Temperature compensation offset adjustment 5-11. Laser power adjustment 5-12. Iop NV Save 5-13. Traverse adjustment 5-14. Focus bias adjustment 5-17. Auto gain adjustment 5-7-4. AUTO CHECK
35
MXD-D400
5-6.
USING THE CONTINUOUSLY RECORDED DISC
* This disc is used in focus bias adjustment and error rate check. The following describes how to create a continuous recording disc. 1. Insert a disc (blank disc) commercially available. 2. Rotate the l AMS L (MD) knob and display "CREC 2MODE" (C37). 3. Press the [YES] button again to display "CREC 2MID". Display "CREC 2(0300)" and start to recording. 4. Complete recording within 5 minutes. 5. Press the [MENU/NO] button and stop recording . 6. Press the [EJECT] button and remove the disc. The above has been how to create a continuous recorded data for the focus bias adjustment and error rate check.
Note: Be careful not to apply vibration during continuous recording.
Checking Procedure: 1. Set the laser power meter on the objective lens of the optical pick-up. Connect the digital volt meter to CN105 pin 1 (I+3V) and CN105 pin 2 (IOP). 2. Then, rotate the l AMS L (MD) knob and display "LDPWR CHECK" (C13). 3. Press the [YES] button once and display "L 0.93 mW $ ". Check that the reading of the laser power meter becomes the specified value.
Note: Never allow the laser emission at 8.65 mW for 1.5 seconds or longer.
Specified Value: 0.84 to 0.92 mW (KMS-262A) 0.90 to 0.96 mW (KMS-262E) 4. Press the [YES] button once more and display " L 8.65 mW $ ". Check that the reading the laser power meter and digital volt meter satisfy the specified value. Specified Value: Laser power meter reading : 8.1 to 8.7 mW (KMS-262A) 8.4 to 8.9 mW (KMS-262E) Digital voltmeter reading : Optical pick-up displayed value ± 10% (Optical pick-up label)
KMS 262E 20101 B0576
5-7.
CHECKS PRIOR TO REPAIRS
These checks are performed before replacing parts according to "approximate specifications" to determine the faulty locations. For details, refer to "Checks Prior to Parts Replacement and Adjustments" (see page 13). 5-7-1. Temperature Compensation Offset Check When performing adjustments, set the internal temperature and room temperature to 22 to 28ºC. Checking Procedure: 1. Rotate the l AMS L (MD) knob to display "TEMP CHECK" (C12). 2. Press the [YES] button. 3. "T=@@(##) [OK" should be displayed. If "T=@@ (##) [NG]" is displayed, it means that the results are bad. (@@ indicates the current value set, and ## indicates the value written in the non-volatile memory.) 5-7-2. Laser Power Check Before checking, check the Iop value of the optical pick-up. (Refer to 5-9. Recording and Displaying the Iop Information (see page 39.) Connection:
laser power meter
(For details of the method for checking this value, refer to "5-9. Recording and Displaying the Iop Information".)
Iop = 57.6 mA in this case Iop (mA) = Digital voltmeter reading (mV)/1 ()
5. Press the [MENU/NO] button and display "LDPWR CHECK" (C13) and stop the laser emission. (The [MENU/NO] button is effective at all times to stop the laser emission.)
Note: After step 4, each time the [YES] button is pressed, the display will be switched between "L 0.73 mW $ ", "L 7.70 mW $ ", and "L Wp $ ". Nothing needs to be performed here.
Check Location: BD (MD) board (see page 43) 5-7-3. Iop Compare The current Iop value at laser power 8.65 mW (KMS-262E) or 8.4 mW (KMS-262A) output and reference Iop value (set at shipment) written in the nonvolatile memory are compared, and the rate of increase/decrease will be displayed in percentage.
Note: Perform this function with the optical pick-up set at room temperature. digital voltmeter
Optical pick-up objective lens
BD (MD) board CN105 pin 1 (I +3 V) CN105 pin 2 (IOP)
+
Procedure: 1. Rotate the l AMS L (MD) knob to display "Iop Compare" (C27). 2. Press the [YES] button and start measurements. 3. When measurements complete, the display changes to "±xx%yy". xx is the percentage of increase/decrease, and OK or NG is displayed at yy to indicate whether the percentage of increase/ decrease is within the allowable range. 4. Press the [MENU/NO] button to end this mode.
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MXD-D400
5-7-4. Auto Check This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform Auto Check after the laser power check and Iop compare. Procedure: 1. Display "AUTO CHECK" and press the [YES] button. If "LDPWR " is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop compare, and then repeat from step 1. 2. If a disc is in the mechanical deck, it will be ejected forcibly. "DISC IN" will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded. 3. If a disk is loaded at step 2, the check will start automatically. 4. When "XX CHECK" is displayed, the item corresponding to XX will be performed. When "06 CHECK" completes, the disc loaded at step 2 will be ejected. "DISC IN" will be displayed. Load the check disc (MD) (TDYS-1). 5. When the disc is loaded in the step 4, the check will automatically be resumed from "07 CHECK". 6. After completing to test item "0C check", check OK or NG will be displayed. If all items are OK, "CHECK ALL OK" will be displayed. If any item is NG, it will be displayed as "NG:xxxx". When "CHECK ALL OK" is displayed, it means that the optical pick-up is normal. Check the operations of the other spindle motor, sled motor, etc. When displayed as "NG:xxxx", it means that the optical pick-up is faulty. In this case, replace the optical pick-up. 5-7-5. Other Checks All the following checks are performed by the Auto Check mode. They therefore need not be performed in normal operation. 6-6. Traverse Check 6-7. Focus Bias Check 6-8. C PLAY Check 6-9. Self-Recording/Playback Check
5-7-6. Traverse Check
Note 1: Data will be erased during MO reading if a recorded disc is used in this adjustment. Note 2: If the traverse waveform is not clear, connect the oscilloscope as shown in the following figure so that it can be seen more clearly. oscilloscope (DC range)
BD (MD) board CN105 pin 4 (TE) CN105 pin 6 (VC) 10 pF 330 k
+
Connection:
oscilloscope (DC range) BD (MD) board CN105 pin 4 (TE) CN105 pin 6 (VC)
+
V: 0.1 V/div H: 10 ms/div
Checking Procedure: 1. Connect an oscilloscope to CN105 pin 4 (TE) and CN105 pin 6 (VC) on the BD (MD) board. 2. Load a disc (any available on the market). (Refer to Note 1) 3. Turn the l AMS L (MD) knob to display "EF MO CHECK"(C14). MO-R". 4. Press the [YES] button to display "EFB = (Laser power READ power/Focus servo ON/tracking servo OFF/spindle (S) servo ON) 5. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the l AMS L (MD) knob. (Read power traverse checking)
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
6. Press the [YES] button to display "EFB = MO-W". 7. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the l AMS L (MD) knob. (Write power traverse checking)
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
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MXD-D400
8. Press the [YES] button to display "EFB = MO-P". Then, the optical pick-up moves to the pit area automatically and servo is imposed. 9. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the l AMS L (MD) knob.
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
5-7-8. C PLAY Check MO Error Rate Check Checking Procedure: 1. Load the test disk (MDW-74/GA-1). 2. Turn the l AMS L (MD) knob to display "CPLAY 2 MODE" (C36). 3. Press the [YES] button to display "CPLAY 2MID". 4. The display changes to "C = AD = ". 5. If the C error rate is below 20, check that ADER is 00. 6. Press the [MENU/NO] button to stop playback, then press the [EJECT] button and take out the test disc. CD Error Rate Check Checking Procedure: 1. Load the check disc (MD) (TDYS-1). 2. Turn the l AMS L (MD) knob to display "CPLAY 2 MODE" (C36). 3. Press the [YES] button to display "CPLAY 2MID". 4. The display changes to "C = AD = ". 5. Check that the C error rate is below 20. 6. Press the [MENU/NO] button to stop playback, then press the [EJECT] button and take out the check disc. 5-7-9. Self-Recording/playback Check Prepare a continuous recording disc using the unit to be repaired and check the error rate. Checking Procedure: 1. Load a recordable disc (blank disc). 2. Turn the l AMS L (MD) knob to display "CREC 2MODE" (C37). 3. Press the [YES] button to display "CREC 2MID". 4. When recording starts, lights up " REC " and display "CREC 2 @@@@" (@@@@ is the address). 5. About 1 minute later, press the [MENU/NO] button to stop continuous recording. 6. Turn the l AMS L (MD) knob to display "CPLAY 2 MODE" (C36). 7. Press the [YES] button to display "CPLAY 2MID". 8. "C = AD = " will be displayed. 9. Check that the C error becomes below 20 and the AD error below 2. 10. Press the [MENU/NO] button to stop playback, then press the [EJECT] button and take out the disc.
10. Press the [YES] button to display "EF MO CHECK (C14)". The disc stops rotating automatically. 11. Press the [EJECT] button and take out the disc. 12. Load the check disc (MD) (TDYS-1). 13. Turn the l AMS L (MD) knob and display "EF CD CHECK" (C15). 14. Press the [YES] button to display "EFB = CD". Servo is imposed automatically. 15. Observe the waveform of the oscilloscope, and check that the specified value is satisfied. Do not turn the l AMS L (MD) knob.
Traverse Waveform
A VC B Specified value : Below 10% offset value Offset value (%) = IA BI X 100 2 (A + B)
16. Press the [YES] button to display "EF CD CHECK" (C15). 17. Press the [EJECT] button and take out the check disc (MD) (TDYS-1). Check Location: BD (MD) board (see page 43) 5-7-7. Focus Bias Check Change the focus bias and check the focus tolerance amount. Checking Procedure: 1. Load the test disk (MDW-74/GA-1). 2. Turn the l AMS L (MD) knob to display "CPLAY 2 MODE" (C36). 3. Press the [YES] button to display "CPLAY 2MID". 4. Press the [MENU/NO] button when "C = AD = " is displayed. 5. Turn the l AMS L (MD) knob to display "FBIAS CHECK" (C16). 6. Press the [YES] button to display " / c = ". The first four digits indicate the C error rate, the two digits after [/] indicate ADER, and the 2 digits after [c =] indicate the focus bias value. 7. Press the [YES] button to display " / b = ". Check that the C error is about 220 and ADER is below 2. 8. Press the [YES] button to display " / a = ". Check that the C error is about 220 and ADER is below 2. 9. Press the [MENU/NO] button, then press the [EJECT] button and take out the test disc.
5-8.
INITIAL SETTING OF ADJUSTMENT VALUE
Note: Mode which sets the adjustment results recorded in the non-volatile memory to the initial setting value. However the results of the temperature compensation offset adjustment will not change to the initial setting value. If initial setting is performed, perform all adjustments again excluding the temperature compensation offset adjustment. For details of the initial setting, refer to "5-5. Precautions for Adjustments" and execute the initial setting before the adjustment as required.
Setting Procedure: 1. Turn the l AMS L (MD) knob to display "ADJ CLEAR" (C28). 2. Press the [YES] button. "Complete!" will be displayed momentarily and initial setting will be executed, after which "ADJ CLEAR" (C28) will be displayed.
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MXD-D400
5-9.
RECORDING AND DISPLAYING THE IOP INFORMATION
5-11. LASER POWER ADJUSTMENT
Check the Iop value of the optical pick-up before adjustments. (Refer to 5-9. Recording and Displaying Iop Information) Connection:
laser power meter
The Iop data can be recorded in the non-volatile memory. The Iop value on the optical pick-up label and the Iop value after the adjustme