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MXD-D5C
SERVICE MANUAL
US Model Canadian Model AEP Model UK Model

Photo: AEP, UK models

U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation.

Model Name Using Similar Mechanism CD Section CD Mechanism Type Base Unit Name Optical Pick-up Name Model Name Using Similar Mechanism MD Section MD Mechanism Type Optical Pick-up Name

NEW CDM53G-21BD53 BU-21BD53 OP Assy (A-MAX.2) NEW MDM-7X2A KMS-262A/J1N

SPECIFICATIONS
CD player section
System Laser Laser output Compact Disc digital audio system Semiconductor laser ( = 780 nm) Emission duration: continuous Less than 44.6 W* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Frequency response Signal-to-noise ratio Wow and flutter 5 to 20,000 Hz 0.5 dB More than 96 dB Below measurable limit MiniDisc digital audio system MiniDisc Semiconductor laser ( = 780 nm) Emission duration: continuous Less than 44.6 W* * This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Laser diode properties Revolutions (CLV) Error correction Sampling frequency Coding Modulation system Number of channels Material: GaAlAs 800 rpm to 1,800 rpm Advanced Cross Interleave Reed Solomon Code (ACIRC) 44.1 kHz AdaptiveTransform Acoustic Coding (ATRAC)/ATRAC 3 EFM (Eight-to-Fourteen Modulation) 2 stereo channels PHONES Jack type Input impedance Rated input Minimum input Frequency response Signal-to-noise ratio Wow and flutter 5 to 20,000 Hz 0.5 dB Over 96 dB during playback Below measurable limit

Inputs

ANALOG IN DIGITAL OPTICAL IN

Phono jacks Square optical connector jack

47 kilohms Optical wave length: 660 nm

500 mVrms 125 mVrms

--

--

MD deck section
System Disc Laser Laser output

Outputs
Jack type Rated output Load impedance

Stereo phone 10 mW jack Phono jacks

32 ohms

ANALOG OUT

2 Vrms Over 10 kilohms (at 50 kilohms)
Continued on next page

COMPACT DISC MINIDISC DECK

General
Power requirements Where purchased Power requirements

Supplied accessories
Audio connecting cords (2) Remote commander (remote) (1) Sony R6 (size-AA) batteries (2)

U.S.A. and Canada Europe

120 V AC, 60 Hz 220 - 230 V AC, 50/60 Hz

Power consumption 25 W (less than 1 W at standby) Dimensions (approx.) (w/h/d) incl. projecting parts and controls 430 120 395 mm Mass (approx.) 6.5 kg

Design and specifications are subject to change without notice.

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)".

Self-Diagnosis Function
The deck has a self-diagnosis display. This function shows a three- or five-digit display (a combination of a letter and figures) and the corresponding message, so you can check the deck's condition. If such a display appears, check the following table in order to resolve the problem. Should any problem persist, consult your nearest Sony dealer. Three-digit display/Message
C11/Protected C12/Cannot Copy

Cause/Remedy
The inserted MD is record-protected. , Take out the MD, and close the record-protect tab. An attempt was made to play a disc that is not compatible withthis deck (CDROM, MD data disc, etc.). , Replace the disc. The recording was not made properly. , Set the deck in a stable place, and repeat the recording procedure. The inserted MD is dirty(with smudges, fingerprints,etc.), scratched, or not up to standards. , Replace the disc, and repeat the recording procedure. The deck could not read the TOC of the MD properly. , Eject the disc, then insert it again. The deck could not read the TOC of the MD properly. , Insert another disc. , If possible, erase all tracks on the MD using the AllErase Function. The digitally dubbed material cannot be recorded digitally. A moment's lightingis due to the signals of the digital program being recorded. This does not affect the recorded material. While recording from a digital component connected through the DIGITAL OPTICAL IN connector, the digital connecting cable was unplugged or the digital component turned off. , Connect the cable or turn the digital component back on.

C13/Rec Error

C13/Read Error C14/Toc Error

C41/Cannot Copy C71/Din Unlock

E0001/MEMORY NG E0101/LASER NG

There is an error in the internal data that the deck needs in order to operate. , Consult your nearest Sony dealer. There ia a problem with the optical pick-up. , The optical pick-up may have failed. Consult your nearest Sony dealer.

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, press the [MENU/NO] button to exit the mode.

1. Press the x (CD), x (MD) and [YES] buttons at the same time. 2. Press the [ l AMS L ] (MD) knob and x (MD) button to display " <0> To Normal". 3. Turn the [ l AMS L ] (MD) knob and when " <5> 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 I/1 button to display "<5> MD Test". 12. To turn the power OFF, turn the [ l AMS L ] (MD) knob and when "<8> Initial" displayed, press the [ l AMS L ] (MD) knob.

2

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 [email protected]@". 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. Display 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 ] knob. er refresh 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 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 change?", 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 change?", 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

op change

spdl change

3

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

TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION ..................................... 2 1. 2. 3. 4. 5. 6. SERVICING NOTES ............................................... 6 GENERAL ................................................................... 16 DISASSEMBLY ......................................................... 17 ASSEMBLY .......................................................... 26 TEST MODE .............................................................. 29 ELECTRICAL ADJUSTMENTS
MD Section ..................................................................... 35 CD Section ...................................................................... 46

7.

DIAGRAMS
48 49 50 51 52 53 54 55 56 58 59 60 61 62 63 64 65 66 68 69 70 71 72 73 77

7-1. Block Diagram MD SERVO Section ....................... 7-2. Block Diagram MAIN Section ................................. 7-3. Block Diagram DISPLAY/POWER SUPPLY Section ..................... 7-4. Note for Printed Wiring Boards and Schematic Diagrams ....................................................... 7-5. Printed Wiring Board BD (CD) Board ..................... 7-6. Schematic Diagram BD (CD) Board ........................ 7-7. Schematic Diagram BD (MD) Board (1/2) .............. 7-8. Schematic Diagram BD (MD) Board (2/2) .............. 7-9. Printed Wiring Board BD (MD) Board .................... 7-10. Printed Wiring Board MAIN Board (Component Side) .............................. 7-11. Printed Wiring Board MAIN Board (Conductor Side) ................................ 7-12. Schematic Diagram MAIN Board (1/4) ................... 7-13. Schematic Diagram MAIN Board (2/4) ................... 7-14. Schematic Diagram MAIN Board (3/4) ................... 7-15. Schematic Diagram MAIN Board (4/4) ................... 7-16. Printed Wiring Board AUDIO Board (Component Side) ............................ 7-17. Printed Wiring Board AUDIO Board (Conductor Side) .............................. 7-18. Schematic Diagram AUDIO Board .......................... 7-19. Printed Wiring Boards CDM Section ...................... 7-20. Schematic Diagram CDM Section .......................... 7-21. Printed Wiring Boards PANEL Section .................. 7-22. Schematic Diagram PANEL Section ....................... 7-23. Printed Wiring Board LED Board ........................... 7-24. Schematic Diagram LED Board .............................. 7-25. IC Pin Function Description ...........................................

8. 9.

EXPLODED VIEWS ................................................ 89 ELECTRICAL PARTS LIST ............................... 96

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.

ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY.

4

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 Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions. ADVARSEL! Lithiumbatteri-Eksplosionsfare ved fejlagtig hndtering. Udskiftning m kun ske med batteri af samme fabrikat og type. Levr det brugte batteri tilbage til leverandren.

ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. VARNING Explosionsfara vid felaktigt batteribyte. Anvnd samma batterityp eller en likvrdig typ som rekommenderas av apparattillverkaren. Kassera anvnt batteri enligt gllande freskrifter. VAROITUS Paristo voi rjht, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty paristo valmistajan ohjeiden mukaisesti.

0.15 F

1.5 k

AC voltmeter (0.75 V)

CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

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.

The laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

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 unit.

5

SECTION 1 SERVICING NOTES
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)

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.

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. 6. When cleaning the objective lens of optical pick-up in CD, refer to "FITTING BASE (GUIDE) ASS'Y, BRACKET (CHASSIS) AND MAGNET ASS'Y" on page 24 for removing MAGNET ASS'Y.

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.

MODEL IDENTIFICATION -- BACK PANEL --
Part No.

Model US model Canadian model AEP, UK models

Part No. 4-228-754-1s 4-228-754-2s 4-228-754-3s

6

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-7X2A

7

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 x (CD), x (MD) and [YES] buttons at the same time. 2. Press the [l AMS L ] (MD) knob and x (MD) button to display " <0> To Normal". 3. Turn the [ l AMS L ] (MD) knob and when " <5> 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 "[email protected]@@[email protected]" (@ 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 "[email protected]@@[email protected]" (@ is an arbitrary number). 9. As the adjustment results are recorded for the 6 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 I/1 button to display "<5> MD Test". 12. To turn the power OFF, turn the [ l AMS L ] (MD) knob and "<8> Initial" displayed, press the [ l AMS L ] (MD) knob. Display Procedure: 1. Press the x (CD), x (MD) and [YES] buttons at the same time. 2. Press the [ l AMS L ] (MD) knob and x (MD) button to display " <0> To Normal". 3. Turn the [ l AMS L ] (MD) knob and when " <5> 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). 6. "@@[email protected]/##.#" is displayed and the recorded contents are displayed. @@[email protected] : indicates the IOP value on the optical pick-up label. ##.# : indicates the IOP value after adjustment 7. To end, press the [ l AMSL ] (MD) knob or [MENU/NO] button to display "Iop Read" (C26). 8. Press the I/1 button to display "<5> MD Test". 9. To turn the power OFF, turn the [ l AMS L ] (MD) knob and "<8> Initial" displayed, press the [ l AMS L ] (MD) knob.

8

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 "6 Electrical Adjustments". Criteria for Determination (Unsatisfactory if specified value is not satisfied) Laser power check (6-2 : See page 38) 0.9 mW power Specified value : 0.80 to 0.96 mW 8.4 mW power Specified value : 8.2 to 8.6 mW Iop (at 8.4mW) Labeled on the optical pick-up Iop value 10mA Traverse check (6-6 : See page 39) Focus bias check (6-7 : See page 40) Traverse waveform Specified value : Below 10% offset Error rate check Specified value : For points a and b C1 error : About 200 AD error : below 2 For point C C1 error: 50 AD error: below 2 Error rate check Specified value: a. When using test disc (MDW-74/GA-1) C1 error : Below 80 AD error : Below 2 b. When using check disc (TDYS-1) C1 error : Below 50 CPLAY error rate check Specified value: C1 error : Below 80 AD error : Below 2 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 Replace the optical pick-up

C PLAY check (6-8 : See page 40)

Replace the optical pick-up

Self-recording/playback check (6-9 : See page 40)

If always unsatisfactory: Replace the overwrite head Check for disconnection of the circuits around the overwrite head If occasionally unsatisfactory: Check if the overwrite head is distorted Check the mechanism around the sled

Temperature compensation offset check (6-1 : See page 38)

Unsatisfactory if displayed as [email protected]@ (##) [NG" NG (@@, ## are both arbitrary numbers)

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.

9

SERVICE MODE
This set provides various modes for the service. Enter the service mode through the procedure given below, and select the desired mode. Procedure: 1. Press the x (CD), x (MD) and [YES] buttons at the same time. 2. Press the [ l AMS L ] (MD) knob and x (MD) button to display " <0> To Normal". 3. At this time, turn the [ l AMS L ] (MD) knob can select all modes. For the contents of mode, see the following table. 4. To exit from the service mode, turn [ l AMS L ] (MD) to display "<0> To Normal", then press the [l AMS L] (MD) knob. Contents of test mode No. 0 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 Display <0> To Normal <1> Version <2> FLD <3> Key, Jog <4> CD Test 0> COMMAND 1> ERROR 2> SPEED X1 3> ISRC 4> CHECK8 5> AUTO G 6> HENSHIN 7> PORT 8> AMS ON 9> TRK ON <5> MD Test <6> Retry & TOC <7> PC LINK <8> Initial <9> MD Update <10> Sircs <11> Dump <12> CD Aging <13> Rep 5 off <14> KeyBoard <15> Special <16> CD Ship Function Exit from test mode Microcomputer Version display FL display test/LED display test Key/Jog input test CD all sorts test Command transfer menu C1, C2 error display Disc speed selection ISRC display Check 8 cm display Auto gain display Decentiering display Port selection AMS display TRK ON/OFF display MD all sorts test MD TOC off & Retry test PC connection check All reset Software update Sircs code display Microcomputer Dump mode CD Aging Cancel restriction of repeat five times Keyboard check Command, Sircs test Shipment mode

10

Microcomputer Version Display Procedure: 1. Enter the service mode, then turn [ l AMS L ] (MD) knob to display "<1> Version", and press the [ l AMS L ] (MD). 2. The CD microcomputer version is displayed, and then press the [ l AMS L ] (MD) knob, and the MD microcomputer version and the display microcomputer version will be displayed. 3. To exit from the mode, press the [ l AMS L ] (MD) knob. FL Display Test/LED display test Procedure: 1. Enter the service mode, then turn [ l AMS L ] (MD) knob to display "<2> FLD", and press the [ l AMS L ] (MD). 2. All segments of fluorescent display tube turn on, and all LEDs turn off. Successive pressing the [l AMS L ] (MD) knob causes the fluorescent display tube to be grid display. The [DISC] button LED becomes green, and all others turn on. 3. Successive pressing the [l AMS L] (MD) knob causes the fluorescent display tube to be another grid display. The [DISC] button LED becomes amber, and all others turn on. 4. To exit from the mode, press the [ l AMS L ] (MD) knob. Key/Jog Input Test Procedure: 1. Enter the service mode, then turn [ l AMS L ] (MD) knob to display "<3> Key, Jog", and press the [ l AMS L ] (MD). 2. Turning the [l AMS L] (MD) knob moves the R-CH level meter, and turning the [l AMS L ] (CD) knob moves the L-CH level meter. 3. Press the buttons in order, and when all buttons were pressed, "Key OK!" will be displayed. 4. To exit from the mode, press the [ l AMS L ] (MD) knob. Software Reset Procedure: 1. Enter the service mode, then turn [ l AMS L ] (MD) knob to display "<8> Initial", and press the [ l AMS L ] (MD). 2. The microcomputer resets the software, and the power is turned off. Shipping initial mode (CD ship setting) At the shipment, finally perform the following operation. Procedure: 1. Enter the Service mode, then turn [ l AMS L ] (MD) knob to display "<16> CD Ship", and press the [ l AMS L ] (MD). 2. "DISC 1" is chucked by the microcomputer control, and the power is turned off with the BD shutter left open.

11

RETRY CAUSE DISPLAY MODE IN MD
In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback, the "track mode" for obtaining track information will be set. This is useful for locating the faulty part of the unit. The following will be displayed : During recording and stop : Retry cause, number of retries, and number of retry errors. During playback : Information such as type of disc played, part played, copyright. These are displayed in hexadecimal. Procedure: 1. Load a recordable disc whose contents can be erased into the unit. 2. Press the [MENU/NO] button. When "Edit Menu" is displayed on the fluorescent indicator tube, turn the [l AMS L] (MD) knob to display "All Erase?". 3. Press the [YES] button. (Or press the [ l AMS L ] (MD) knob) 4. "All Erase?" is displayed on the fluorescent indicator tube. 5. Press the [YES] button to display "Complete!". (The [l AMS L] (MD) knob can be pressed instead of the [YES] button for the same results) 6. Press x (CD) button, x (MD) button, and [YES] button simultaneously. 7. Press the [ l AMS L ] (MD) knob and x (MD) button to display "<0> To Normal". 8. Turn [ l AMS L ] (MD) knob to display "<6> Retry & TOC", and press the [ l AMS L ] (MD) knob. 9. Press the [REC z] button to start recording. Then press the X (MD) button and start recording. 10. To check the "track mode", press the H (MD) button to start play. 11. To release the test mode, press the I/1 button, and turn OFF the power. When "TOC" disappears, disconnect the power plug from the outlet.

Fig. 1 Reading the Test Mode Display (During recording and stop)
[email protected]@c##e** Fluorescent indicator tube display @@ : Cause of retry ## : Number of retries ** : Number of retry errors Reading the Retry Cause Display Higher Bits Lower Bits HexaHexadecimal 8 4 2 1 8 4 2 1 decimal Bit b7 b6 b5 b4 b3 b2 b1 b0 Binary 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 01 02 04 08 10 20 40 80 Cause of Retry shock ader5

Fig. 2 Reading the Test Mode Display (During playback)
@@ ###** $$ Fluorescent indicator tube display @@ : ## : ** : $$ : Parts No. (name of area named on TOC) Cluster Address Sector Track mode (Track information such as copyright information of each part)

Occurring conditions When track jump (shock) is detected When ADER was counted more than five times continuously

Discontinuous address When ADIP address is not continuous When DIN unlock is detected DIN unlock FCS incorrect IVR rec error CLV unlock Access fault When not in focus When ABCD signal level exceeds the specified range When CLV is unlocked When access operation is not performed normally

Reading the Display: Convert the hexadecimal display into binary display. If more than two causes, they will be added. Example When 42 is displayed: Higher bit: 4 = 0100 t b6 Lower bit : 2 = 0010 t b1 In this case, the retry cause is combined of "CLV unlock" and "ader5". When A2 is displayed: Higher bit: A = 1010 t b7 + b5 Lower bit : 2 = 0010 t b1 The retry cause in this case is combined of "Access fault", "IVR rec error", and "ader5".

12

Reading the Retry Cause Display Higher Bits Lower Bits HexaHexadecimal 8 4 2 1 8 4 2 1 decimal Bit b7 b6 b5 b4 b3 b2 b1 b0 Binary 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 01 02 04 08 10 20 40 80 Monaural This is 2-bit display. Normally 01. 01:Normal audio. Others:Invalid Audio (Normal) Original Copyright Write prohibited Invalid Digital copy No copyright Write allowed Details When 0 Emphasis OFF Stereo When 1 Emphasis ON

Reading the Display: Convert the hexadecimal display into binary display. If more than two causes, they will be added. Example When 84 is displayed: Higher bit: 8 = 1000 t b7 Lower bit : 4 = 0100 t b2 In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of "Emphasis OFF", "Monaural", "Original", "Copyright", and "Write allowed". Example When 07 is displayed: Higher bit: 0 = 0000 t All 0 Lower bit : 7 = 0111 t b0 + b1 + b2 In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of "Emphasis ON", "Stereo", "Original", "Copyright", and "Write prohibited".

Hexadecimal t Binary Conversion Table
Hexadecimal 0 1 2 3 4 5 6 7 Binary 0000 0001 0010 0011 0100 0101 0110 0111 Hexadecimal 8 9 A B C D E F Binary 1000 1001 1010 1011 1100 1101 1110 1111

13

CD SECTION
In checking the CD block and MAIN board, prepare jig. In checking the CD block, prepare jig (extension cable J-2501-075-A) to connect the BD (CD) board (CN101) and MAIN board (CN302). In checking the MAIN board, prepare jig (extension cable J-2501-094-A) to connect the MAIN board (CN802) and DISPLAY board (CN951).

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

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

*

+ , . /

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 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


1 2 3 4







D Y y No.66 No.67 to No.99

15

SECTION 2 GENERAL
LOCATION OF CONTROLS
Front View

1 Remote sensor 2 I/1 (power) switch STANDBY indicator 3 DISC 15 button DISK 15 A (CD tray open/close) button 4 CD tray 5 CD SYNCHRO NORMAL button CD SYNCHRO HIGH button 6 MD insertion slot 7 A EJECT button 8 MD LP indicator 9 REC MODE button 0 PHONE LEVEL control PHONE jack

qa CD operation button H (play) button X (pause) button x (stop) button m/M (forward/backward) button AMS control CLEAR button PLAY MODE button TIME button qs REC-IT button qd DISPLAY button qf Display window qg MD operation button MENU/NO button CLEAR button

AMS control YES button H (play) button X (pause) button x (stop) button m/M (forward/backward) button REC z (recording) button PLAY MODE button TIME/CHAR button qh INPUT button qj SLEEP button

Rear View

1 AC power cord 2 ANALOG IN jack 3 ANALOG OUT jack

4 DIGITAL OPTICAL IN jack 5 KEYBOARD jack

16

SECTION 3 DISASSEMBLY
This set can be disassembled in the order shown below.

CASE (Page 18)

FRONT PANEL ASS'Y (Page 18)

HP BOARD, SW BOARD, LED BOARD, DISPLAY BOARD (Page 19)

CD MECHANISM DECK SECTION (CDM53G-21BD53), MD MECHANISM DECK SECTION (MDM-7X2A) (Page 19)

AUDIO BOARD (Page 20)

BD (MD) BOARD (Page 21)

CD BASE UNIT (BU-21BD53) (Page 23)

MAIN BOARD, POWER TRANSFORMER (TR701) (Page 20)

HOLDER ASS'Y (Page 21)

FITTING BASE (GUIDE) ASS'Y, BRACKET (CHASSIS) AND MAGNET ASS'Y (Page 24)

GUIDE (L), SLIDER (EJ), SLIDER, LEVER (HEAD) (Page 22)

TRAY (SUB) (Page 24)

OPTICAL PICK-UP (KMS-262A/J1N), OVER LIGHT HEAD (HR901) (Page 22)

CHASSIS (MOLD B) SECTION, STOCKER SECTION AND SLIDER (SELECTION) (Page 25)

SPINDLE MOTOR ASS'Y (M101), SLED MOTOR ASS'Y (M102), LOADING MOTOR ASS'Y (M103) (Page 23)

17

Note: Follow the disassembly procedure in the numerical order given.

CASE

2 case 1 two screws 1 two screws

1 two screws

FRONT PANEL ASS'Y
1 connector (CN300)

2 wire (flat type) (9 core) (CN803)

5 claw 4 four screws (BVTT3 6)

5 claw 3 seven screws (BVTT3 6)

2 wire (flat type) (19 core) (CN802)

6 front panel ass'y

18

HP BOARD, SW BOARD, LED BOARD, DISPLAY BOARD
2 screw (BVTP2.6 8) 4 HP board 5 nine screws (BVTP2.6 8)

6 LED board 3two nuts 2 two screws (BVTP2.6 8) 7 four screws (BVTP2.6 8)

9 ten screws (BVTP2.6 8)

8 SW board 9 four screws (BVTP2.6 8)

1 knob (phone) level

0 DISPLAY board 1 two knob (AMS) ass'ys

CD MECHANISM DECK SECTION (CDM53G-21BD53), MD MECHANISM DECK SECTION (MDM-7X2A)
3 two screws (BVTT3 6) 3 two screws (BVTT3 6) 4 CD mechanism deck section (CDM53G-21BD53) 2 wire (flat type) (21 core) (CN101)

6 four screws (BVTTWH M3)

1 connector (CN713) 7 MD mechanism deck section (MDM-7X2A)

2 wire (flat type) (17 core) (CN701)

5 wire (flat type) (17 core) (CN303)

5 wire (flat type) (27 core) (CN304)

19

AUDIO BOARD

1 wire (flat type) (19 core) (CN305)

2 three screws (BV3 8)

3 AUDIO board

MAIN BOARD, POWER TRANSFORMER (TR701)
2 screw (BVTT3 6) 6 two PC board holders 1 four screws (PTTWH3 6)

power transformer

2 screw (BVTT3 6)

power transformer (TR701)

MAIN board bottom view

2 five screws (BVTT3 6)

4 Remove solders. 5 MAIN board

3

20

BD (MD) BOARD

5 Remove the solder (four portions). 1 wire (flat type)(23 core)

2 wire (flat type) (27 core)

7 BD (MD) board 3 connector (CN104)

4 Remove the solder (five portions). 6 two screws (BTP2 6)

8 flexible board (CN104)

HOLDER ASS'Y
1 claw 2 holder ass'y

21

GUIDE (L), SLIDER (EJ), SLIDER, LEVER (HEAD)
4 slider (EJ)

3 slider

2 guide (L) 1 two screws (BTP2 6) 5 lever (CHG) 6 lever (head)

OPTICAL PICK-UP (KMS-262A/J1N), OVER WRITE HEAD (HR901)

9 optical pick-up (KMS-262A/J1N) over write head (HR901)

7 main shaft 8 screw (KTP2 6) 8 screw (KTP2 6)

5 screw (BTP2 6)

3 screw (BTP2 6)

6 base (BU-A) 4 base (BU-D) 2 gear (SD) 1 screw (M1.7, TAPPING)

22

SPINDLE MOTOR ASS'Y (M101), SLED MOTOR ASS'Y (M102), LOADING MOTOR ASS'Y (M103)

1 belt (loading) 4 two screws (PWH1.7 2.5) 2 two screws (PWH1.7 2.5)

3 loading motor ass'y (M103) 5 sled motor ass'y (M102)

7 spindle motor ass'y (M101) 6 three screws (M1.7)

CD BASE UNIT (BU-21BD53)

5 CD base unit (BU-21BD53)

4 two cone coil springs

2 two cone coil springs

3 two screws (BVTP2.6)

1 two screws (BVTP2.6)

23

FITTING BASE (GUIDE) ASS'Y, BRACKET (CHASSIS) AND MAGNET ASS'Y
8 four screws (BVTP M2.6) 2 four screws (BVTP M2.6) 6 bracket (chassis)

4 two screws (BVTP M2.6)

7 connector (CN710)

9 magnet ass'y 5 two screws (BVTP M2.6)

3 fitting base (guide) ass'y 1 two connectors (CN709, 715)

TRAY (SUB)
1 2 3 4

Rotating the pulley (LD), shift the slider (selection) in the direction of arrow A. Rotating the pulley (mode) in the arrow direction, adjust the tray (sub) to be removed. Rotating the pulley (LD), shift the slider (selection) in the direction of arrow B. Rotating the pulley (mode) in the arrow direction, remove the tray (sub).

slider (selection) pulley (LD)

stocker section

A B

pulley (mode)

tray (sub)

24

CHASSIS (MOLD B) SECTION, STOCKER SECTION AND SLIDER (SELECTION)
Note: In mounting the parts, refer to page 26 - 28.
6 two screws (PTPWH M2.6) 5 stocker section

7 slider (selection) 8 washer

pulley (LD)
4 two step screws

9 compression spring

1 three screws (BVTP M2.6)

2 chassis (mold B) section

Note: Rotating the pulley (LD), shift the slider (selection) to the left.
4 two step screws 3 gear (eject)

25

SECTION 4 ASSEMBLY

GEARS INSTALLATION (Page 26)

SLIDER (SELECTION) INSTALLATION (Page 27)

STOCKER SECTION INSTALLATION (Page 27)

CHASSIS (MOLD B) SECTION INSTALLATION (Page 28)

Note: Follow the assembly procedure in the numerical order given.

GEARS INSTALLATION

3 gear (gear B)

portion A

Adjust the gear (gear B) with the portion A as shown.

1 Slide the slider (u/d) fully in the arrow direction.

2 gear (U/D slider)

4 gear (gear A)

slider (U/D) gear

gear (gear B)

linearly

Adjust the gear so that it meshes with the bottom tooth of slider (U/D) gear, as shown.

Adjust so as to be aligned with gear B linearly, as shown.

26

SLIDER (SELECTION) INSTALLATION
6 two screws (PTPWH M2.6) 2 gear (chuking)

rotary encoder

5 washer 4 compression spring 7 Insert the slider (selection) into the portion A.

Align with the slot of rotary encoder.

portion A

3 convex portion of slider (selection) gear (chuking) 1 rotary encoder

Insert a convex portion into a groove of gear (chuking). align marking

STOCKER SECTION INSTALLATION
2 portion A of tray (sub) 1 stocker section

Hook the portion A of tray (sub) to the slider (selection).

portion A of tray (sub)
3 two step screws

sticking of slider (selection)

3 two step screws

27

CHASSIS (MOLD B) SECTION INSTALLATION
3 three screws (BVTP M2.6)

2 Insert the gear (eject) under the gear (LD deceleration).

portion A

1 Insert the portion A of chassis (mold B) section into the portion B of slider (selection).

gear (LD deceleration)

portion B of slider (selection)

28

SECTION 5 TEST MODE
MD SECTION
Note: MD always plays double speed.

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 [A 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 [A 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 MODE) Laser power check mode (LDPWR CHECK) Laser power adjustment mode (LDPWR ADJUST) Iop check (Iop compare) Iop value non-volatile writing (Iop NV save) Traverse (MO) check (EF MO CHECK) Traverse (MO) adjustment (EF MO ADJUST) When pressing the [REC z ] button.

2. SETTING THE TEST MODE
The following is the method of entering the test mode. Procedure: Press the x (CD), x (MD) and [YES] buttons at the same time. Press the [ l AMS L ] (MD) knob and x (MD) button to display " < 0 > To Normal". Turn the [ l AMS L ] (MD) knob and when " < 5 > 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 four 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
Press the I/1 button to display "<5> MD Test".

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 and set sub menu. Proceeds onto the next step. Finalizes input. Returns to previous step. Stops operations.

[ l AMS L ] (MD) knob [YES] button [MENU/NO] button

29

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 modes shown below. 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 ADJUST No. C01 C02 C03 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

LDPWR ADJUST C04 Iop Write Iop NV Save EF MO ADJUST EF CD ADJUST FBIAS ADJUST 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 CPLAY2MODE CREC 2MODE C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C25 C26 C27 C28 C31 C36 C37

For details of each adjustment mode, refer to "6. Electrical Adjustments". For details of "Err Display", 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.

30

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 "CPLAY2MODE" (C36). (3) Press the [YES] button to change the display to "CPLAY2MID". (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. "CPLAY2MID" t "CPLAY2OUT" t "CPLAY2IN" 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 "CPLAY2MODE" (C36). (2) Press the [A 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/playback 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 (
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 (
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 [A 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) M (MD) m (MD) REC MODE PLAY MODE (MD) DISPLAY A EJECT I/1 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. The sled moves to the outer circumference only when this is pressed. The sled moves to the inner circumference only when this is pressed. Switches between the pit and groove modes when pressed. Switches the spindle servo mode (CLVS y CLVA). Switches the displayed contents each time the button is pressed Ejects the disc Releases the test mode

31

7. TEST MODE DISPLAYS Each time the [DISPLAY] button is pressed, the display changes in the following order.
When CPLAY and CREC are started, the display will forcibly be switched to the error rate display as the initial mode. 1. Mode display Displays "TEMP ADJUST" (C03), "CPLAY2MODE" (C36), etc. 2. Error rate display Displays the error rate in the following way. C= AD = C = : Indicates the C1 error. AD = : Indicates ADER. 3. Address display The address is displayed as follows. (MO: recordable disc, CD: playback only disc) h= s= (MO pit and CD) h= a= (MO groove) h = Indicates the header address. s = Indicates the SUBQ address. a = Indicates the ADIP address.
Note: "" is displayed when servo is not imposed.

Mode display Error rate display Address display Auto gain display (Not used in servicing) Detrack check display (Not used in servicing) IVR display (Not used in servicing) C1 error and jitter display (Not used in servicing) AD error and jitter display (Not used in servicing)

MEANINGS OF OTHER DISPLAYS
Display N X REC TOC EDIT L.SYNC OVER B/1 A-REP TRACK/(LP4)/calendar frame DISC/LP2 SHUF MONO Servo ON Tracking servo OFF Recording mode ON CLV low speed mode ABCD adjustment completed Tracking offset cancel ON Tracking auto gain OK Focus auto gain OK Pit High reflection CLVS CLV LOCK Groove Low reflection CLVA CLV UNLOCK Tracking offset cancel OFF Contents When Lit Servo OFF Tracking servo ON Recording mode OFF CLV normal mode When Off

32

8. 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. 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 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, "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.

9. INFORMATION
Display the software version. Procedure: 1. If displayed as "INFORMATION", press the [YES] button. 2. The software version will be displayed. 3. Press the [MENU/NO] button to end this mode.

10. WHEN MEMORY NG IS DISPLAYED
If the nonvolatile memory data is abnormal, "E0001/MEMORY NG" will be displayed so that the MD deck does not continue operations. In this case, set the test mode promptly and perform the following procedure. Procedure: 1. Set the test mode (refer to page 29). 2. Normally a message for selecting the test mode will be displayed. However if the nonvolatile memory is abnormal, the following will be displayed "INIT EEP?". 3. Press the x (MD) button and [A EJECT] button together. 4. Rotate the [ l AMS L ] knob and select MDM-7X2A. 5. Press the [ l AMS L ] knob. If the nonvolatile memory is successfully overwritten, the normal test mode will be set and a message to select the test mode will be displayed.

33

CD SECTION
Set the CD test mode when performing confirmations. After completing confirmation, release the CD test mode. (Turn the [l AMS L ] (MD) knob, "<8> Initial" displayed and press the [ l AMS L ] (MD) knob so that the power is turned off.)

1. COMMAND TRANSFER MENU
Procedure: (1) Enter the test mode, then rotate [ l AMS L] (MD) knob to display "0> COMMAND", and press the [l AMS L] (MD) knob. (2) Select a command with [ l AMS L ] (MD) knob, and press the [ l AMS L ] (MD) knob to set. (3) Select the edit position with m (MD) and M (MD) buttons, and rotate [l AMS L] (MD) knob for editing, then press the [l AMS L ] (MD) knob for transfer. (4) To exit from this mode, press the [MENU/NO] button.

2. C1, C2 ERROR DISPLAY
Procedure: (1) Enter the test mode, then rotate [l AMS L] (MD) knob to display "1> ERROR", and press the [l AMS L] (MD) knob. (2) C1 error and C2 error are displayed on the left side and right side with 4-digit codes respectively. (3) To exit from this mode, press the [MENU/NO] button.

3. DISC SPEED SELECTION
Procedure: (1) Enter the test mode, then rotate [ l AMS L ] (MD) knob to display "2> SPEED X1", and press the [ l AMS L ] (MD) knob. (2) Each time the [ l AMS L ] (MD) knob is pressed, the speed changes over such as x1 t x2 t x4 t x1. (3) To exit from this mode, press the [MENU/NO] button.

4. CHECK 8 DISPLAY
Procedure: (1) Enter the test mode, then rotate [l AMS L ] (MD) knob to display "4> CHECK8", and press the [l AMS L ] (MD) knob. (2) The time from spindle kick to GFS detect is displayed. (3) To exit from this mode, press the [MENU/NO] button.

5. PORT SELECTION
Procedure: (1) Enter the test mode, then rotate [ l AMS L] (MD) knob to display "7> PORT", and press the [l AMS L ] (MD) knob. (2) Rotate the [l AMS L ] (MD) knob to select GFS, ERROR RATE, RFCK and press the [ l AMS L ] (MD) knob to set. (3) To exit from this mode, press the [MENU/NO] button.

6. AMS ON/OFF
Procedure: (1) Enter the test mode, then rotate [ l AMS L ] (MD) knob to display "8> AMS ON", and press the [ l AMS L ] (MD) knob. (2) Switch the high speed ON/OFF of the track jamp. (3) To exit from this mode, press the [MENU/NO] button.

7. TRK ON/OFF
Procedure: (1) Enter the test mode, then rotate [ l AMS L ] (MD) knob to display "9> TRK ON", and press the [ l AMS L ] (MD) knob. (2) Switch the tracking servo ON/OFF. (3) To exit from this mode, press the [MENU/NO] button.

34

SECTION 6 ELECTRICAL ADJUSTMENTS
MD SECTION
Note: MD always plays double speed.

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

6-2. Laser Power Check (See page 38) OK

NG

6-3. Iop Compare (See page 38) OK

NG

6-4. Auto Check (See page 39) OK

NG

Replace optical pick-up or MDM-7X2A

Other faults are suspected. Check the threading mechanism parts (sled motor, etc.)

35

Adjustment flow

Start

Abbreviation OP: optical pick-up

Replace IC195 NO

YES

After turning off and then on the power, initialize the EEPROM For details, refer to 10. WHEN MEMORY NG IS DISPLAYED (See page 33)

Replace OP or IC195 NO

YES

7. INITIAL SETTING OF ADJUSTMENT VALUE (See page 41)

Replace IC101, IC195, or D101 NO

YES

9. TEMPERATURE COMPENSATION OFFSET ADJUSTMENT (See page 41)

Replace OP, IC190, or IC195 NO

YES

10. LASER POWER ADJUSTMENT (See page 41)

Replace OP, IC102, IC190, or IC195 NO

YES

11. Iop NV SAVE (See page 42)

Replace OP, IC101, IC151, or IC195 NO

YES

12. TRAVERSE ADJUSTMENT (See page 42) 13. FOCUS BIAS ADJUSTMENT (See page 43) 16. AUTO GAIN CONTROL OUTPUT LEVEL ADJUSTMENT (See page 44)

Replace OP NO

YES

OP change in Err Display mode Iop write

Replace the spindle motor NO 6-4. Auto Check (See page 39)

YES

Spindle change in Err Display mode

End adjustments

36

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.

3. PRECAUTIONS FOR USE OF OPTICAL PICKUP (KMS-262A)
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

4. 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 Disc (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 Notes 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 7. Initial setting of adjustment value 8. Recording of Iop information 9. Temperature compensation offset adjustment Optical Pick-up IC101 IC102 IC151 IC190 IC195 D101

10. Laser power adjustment 11. Iop NV Save 12. Traverse adjustment 13. Focus bias adjustment 16. Auto gain adjustment 6-4. AUTO CHECK

37

5. 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 2 MODE" (C37). 3. Press the [YES] button again to display "CREC 2MID". Display "CREC (0300)" and start to recording. 4. Complete recording within 5 minutes. 5. Press the [MENU/NO] button and stop recording . 6. Press the [A 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. (When it cannot be set properly, press the m (MD) button or M (MD) button to move 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 "LD 0.9 mW $ ". Check that the reading of the laser power meter become 0.84 to 0.92 mW. 4. Press the [YES] button once more and display " LD 7.0 mW $ ". Check that the reading the laser power meter and digital volt meter satisfy the specified value. Specified Value: Laser power meter reading : 7.0 0.2 mW Digital voltmeter reading : Optical pick-up displayed value 10% (Optical pick-up label)
KMS

6. 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 in MD" (see page 9). 6-1. Temperature Compensation Offset Check When performing adjustments, set the internal temperature and room temperature to 22 to 28C. Checking Procedure: 1. Rotate the [ l AMS L ] (MD) knob to display "TEMP CHECK" (C12). 2. Press the [YES] button. 3. "[email protected]@(##) [OK" should be displayed. If "[email protected]@ (##) [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.) 6-2. Laser Power Check Before checking, check the Iop value of the optical pick-up. (Refer to 8. Recording and Displaying the Iop Information (see page 41.)) Connection:
laser power meter

262A 20101 B0825 R

(For details of the method for checking this value, refer to "8. Recording and Displaying the Iop Information".)

Iop = 82.5 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 "LD 0.7 mW $ ", "LD 6.2 mW $ ", and "LD Wp $ ". Nothing needs to be performed here.

Checking Location: BD (MD) board (see page 45) 6-3. Iop Compare The current Iop value at laser power 7 mW 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.

Optical pick-up objective lens

digital voltmeter 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.

38

6-4. 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: " is displayed, 1. Press the