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MDS-JA333ES
SERVICE MANUAL
US Model Canadian Model AEP Model UK Model

Photo : GOLD

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

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

MDS-JA555ES MDM-6J MBU-5J KMS-260B/J1N

SPECIFICATIONS
System Disc Laser Laser output MiniDisc digital audio system MiniDisc Semiconductor laser ( = 780 nm) Emission duration: continuous MAX 44.6 хW1) 1) 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. Material: GaAlAs 400 rpm to 900 rpm ACIRC (Advanced Cross Interleave Reed Solomon Code) 44.1 kHz ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 EFM (Eight-to-Fourteen Modulation) 2 stereo channels 5 to 20,000 Hz ▒0.3 dB Over 100 dB during play Below measurable limit

Inputs
ANALOG IN Jack type: phono Impedance: 47 k Rated input: 500 mVrms Minimum input: 125 mVrms Connector type: square optical Impedance: 660 nm (optical wave length) Connector type: square optical Impedance: 660 nm (optical wave length) Jack type: phono Impedance: 75 Rated input: 0.5 Vp-p, ▒20 %

DIGITAL IN OPT1

DIGITAL IN OPT2

Laser diode Revolutions (CLV) Error correction Sampling frequency Coding Modulation system Number of channels Frequency response Signal-to-noise ratio Wow and flutter

DIGITAL IN COAXIAL

Outputs
PHONES Jack type: stereo phone Rated output: 28 mW Load impedance: 32 Jack type: phono Rated output: 2.5 Vrms (at 50 k ) Load impedance: over 10 k
-- Continued on next page --

ANALOG OUT

MINIDISC DECK

SAFETY CHECK-OUT
DIGITAL OUT OPTICAL Connector type: square optical Rated output: Г18 dBm Load impedance: 660 nm (optical wave length) DIGITAL OUT COAXIAL Jack type: phono Rated output: 0.5 Vp-p (at 75 ) Load impedance: 75 After correcting the original service problem, perform the following safety checks 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
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. A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 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 low-voltage 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 2V AC range are suitable. (See Fig. A)
To Exposed Metal Parts on Set

General
Power requirements Where purchased US, Canadian AEP, UK Power requirements 120 V AC, 60 Hz 230 V AC, 50/60 Hz

Power consumption 20 W Dimensions (approx.) 430 О 123.5 О 375.5 mm (17 О 4 7/8 О 14 7/8 in.) (w/h/d) incl. projecting parts and controls Mass (approx.) 10.5 kg (23 lbs 15 oz)

2.

3.

Supplied accessories и Audio connecting cords (2) и Optical cable (1) и Remote commander (remote) (1) и R6 (size-AA) batteries (2)
Design and specifications are subject to change without notice. CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the equipment manufacturer. Discard used batteries according to manufacture's instructions. ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig hтndtering. Udskiftning mт kun ske med batteri af samme fabrikat og type. Levжr det brugte batteri tilbage til leverandЭren. ADVARSEL Eksplosjonsfare ved feilakting skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier katterier kasseres i henhold til fabrikantens VARNIG Explosionsfara vid felaktigt batteribyte. AnvСnd samma batterityp eller en likvСrdig typ som rekommenderas av apparattillverkaren. Kassera anvСnt batteri enligt gСllande fШreakrifter. VAROITUS Parist voi rСjСhtСС, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. HСvitС kСytetty paristo valmistajan ohjeiden mukaisesti.

0.15 хF

1.5 k

AC Voltmeter (0.75 V)

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

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 S╔CURIT╔! LES COMPOSANTS IDENTIF╔S PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCH╔MATIQUES ET LA LISTE DES PI╚CES SONT CRITIQUES POUR LA S╔CURIT╔ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PI╚SES SONY DONT LES NUM╔ROS SONT DONN╔S DANS CE MANUEL OU DANS LES SUPP╔MENTS PUBLI╔S PAR SONY.

2

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

TABLE OF CONTENTS 1. SERVICING NOTE ииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 6 2. GENERAL ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 12 3. DISAssembly
3-1. 3-2. 3-3. 3-4. 3-5. 3-6. 3-7. 3-8. 3-9. 3-10. 3-11. Case ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 16 Loading Panel иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 16 Front Panel Assembly иииииииииииииииииииииииииииииииииииииииииииииииииииииии 17 MD Mechanism Deck ииииииииииииииииииииииииииииииииииииииииииииииииииииии 17 Tray Assembly ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 18 BU Holder Assembly ииииииииииииииииииииииииииииииииииииииииииииииииииииииии 19 Motor (Loading) Assembly (M10) иииииииииииииииииииииииииииииииииии 19 Base Unit (MBU-5J) ииииииииииииииииииииииииииииииииииииииииииииииииииииииии 20 BD Board ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 20 Over Light Head (HR901) ииииииииииииииииииииииииииииииииииииииииииииииии 21 Mini Disc Device (KMS-260B/J1N) ииииииииииииииииииииииииииииииии 21

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 the unit.

4. TEST MODE ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 22 5. ELECTRICAL ADJUSTMENTS иииииииииииииииииииииииииииииии 27 6. DIAGRAMS
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 и Never reuse a disconnected chip component. и Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing и Keep the temperature of soldering iron around 270░C during repairing. и Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). и Be careful not to apply force on the conductor when soldering or unsoldering. 6-1. Block Diagrams ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 37 Main Section иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 37 Display/Power Supply Section иииииииииииииииииииииииииииииииииииииииии 38 6-2. Circuit Board Location иииииииииииииииииииииииииииииииииииииииииииииииииииии 39 6-3. Printed Wiring Board BD Section ииииииииииииииииииииииииииииииииии 40 6-4. Schematic Diagram BD Section (1/2) иииииииииииииииииииииииииии 41 6-5. Schematic Diagram BD Section (2/2) иииииииииииииииииииииииииии 42 6-6. Schematic Diagram BD Switch Section ииииииииииииииииииииииии 43 6-7. Printed Wiring Board BD Switch Section иииииииииииииииииииииии 43 6-8. Printed Wiring Board AD Section ииииииииииииииииииииииииииииииии 44 6-9. Schematic Diagram AD Section ииииииииииииииииииииииииииииииииииии 45 6-10. Printed Wiring Board DIO Section ииииииииииииииииииииииииииииии 46 6-11. Schematic Diagram DIO Section ииииииииииииииииииииииииииииииииии 47 6-12. Printed Wiring Board DA Section иииииииииииииииииииииииииииииииии 48 6-13. Schematic Diagram DA Section иииииииииииииииииииииииииииииииииии 49 6-14. Printed Wiring Board DIGITAL Section иииииииииииииииииииииии 50 6-15. Schematic Diagram DIGITAL Section ииииииииииииииииииииииии 51 6-16. Schematic Diagram HP Section иииииииииииииииииииииииииииииииииии 52 6-17. Printed Wiring Board HP Section ииииииииииииииииииииииииииииииии 53 6-18. Schematic Diagram POWER Section ииииииииииииииииииииииииии 54 6-19. Printed Wiring Board POWER Section ииииииииииииииииииииииии 55 6-20. Printed Wiring Board PANEL Section иииииииииииииииииииииииии 56 6-21. Schematic Diagram PANEL Section ииииииииииииииииииииииииииии 57 6-22. Printed Wiring Board AC Section ииииииииииииииииииииииииииииииии 58 6-23. Schematic Diagram AC Section иииииииииииииииииииииииииииииииииии 59 6-22. IC Block Diagrams иииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 61 6-23. IC PinFunction Description ииииииииииииииииииииииииииииииииииииииииииииии 66

MODEL IDENTIFICATION -- BACK PANEL --
Parts No.

7. EXPLODED VIEWS
7-1. 7-2. 7-3. 7-4. 7-5. 7-6. Upper Case Assembly ииииииииииииииииииииииииииииииииииииииииииииииииииииии 73 Front Panel Assembly иииииииииииииииииииииииииииииииииииииииииииииииииииииии 74 Chassis Assembly иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии 75 Mechanism Deck Assembly-1 (MDM-6J) иииииииииииииииииииииии 76 Mechanism Deck Assembly-2 (MDM-6J) иииииииииииииииииииииии 77 Base Unit (MBU-5J) ииииииииииииииииииииииииииииииииииииииииииииииииииииииии 78

4-228-930-1 4-228-930-2 4-228-930-3

: AEP, UK model : US model : Canadian model

8. ELECTRICAL PARTS LIST иииииииииииииииииииииииииииииииииииииии 79

3

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 SelfDiagnosis Function (Error History Display Mode)". The deck's self-diagnosis function automatically checks the condition of the MD deck when an error occurs, then issues a three- or five-digit code and an error message on the display. If the code and message alternate, find them in the following table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer.

Three- or fivedigit code/ Message C11/Protected

Cause/Remedy The inserted MD is record-protected. Take out the MD and close the recordprotect slot. You tried to record a CD with a format that the external device connected to the deck does not support, such as CD-ROM or video CD. Remove the disc and insert a music CD. The recording was not made properly. Set the deck in a stable surface, and repeat the recording procedure. The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or substandard in quality. Replace the disc and repeat the recording procedure. The deck could not read the TOC on the MD properly. Take out the MD and insert it again. The deck could not read the TOC on the MD properly. Insert another disc. If possible, erase all the tracks on the MD. The sound source is a copy of commercially available music software, or you tried to record a CD-R (Recordable CD). The Serial Copy Management System prevents making a digital copy. You cannot record a CD-R.

Three- or fivedigit code/ Message

Cause/Remedy The sporadic appearance of this message is caused by the digital signal being recorded. This will not affect the recording.

C12/Cannot Copy

C71/Din Unlock

C13/REC Error

E0001/ MEMORY NG

While recording from a digital component connected through the DIGITAL IN connector, the digital connecting cable was unplugged or the digital component turned off. Connect the cable or turn the digital component back on. There is an error in the internal data that the deck needs in order to operate. Consult your nearest Sony dealer. There is a problem with the optical pickup. The optical pickup may have failed. Consult your nearest Sony dealer.

E0101/ LASER NG

C13/Read Error

C14/Toc Error

C41/Cannot Copy

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. While pressing the l AMS L knob and x button, connect the power plug to the outlet, and release the l AMS L knob and x button. When the test mode is set "[Check]" is displayed. 2. Turn the l AMS L knob and when "[Service]" is displayed, press the YES button. 3. Turn the l AMS L knob to display "Err Display". 4. Press the YES button to sets the error history mode and displays "op rec tm". 5. Select the contents to be displayed or executed using the l AMS L knob. 6. Press the l AMS L knob to display or execute the contents selected. 7. Press the l AMS L knob another time to return to step 4. 8. Press the MENU/NO button to display "Err Display" and release the error history mode. 9. To release the test mode, press the REPEAT button. The unit sets into the STANDBY state and the test mode ends.

4

[ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS]
Display op rec tm Details of History Displays the total recording time. When the total recording time is one minute or longer, displays the time and minute. When the total recording time is less than one minute, displays "Under 1 min". The displayed time is about 1/4 of the actual recording time when the laser is set to the high power state. Displays the total playback time. When the total playback time is one minute or longer, displays the time and minute. When the total playback time is less than one minute, displays "Under 1 min". Displays the total time when the spindle motor rotates. When the total rotation time is one minute or longer, displays the time and minute. When the total rotation time is less than one minute, displays "Under 1 min". Displays the total number of retries during recording and number of retry errors during playback. Displayed as "r xx p yy". "xx" indicates the number of retries during recording, "yy" indicates the number of retry errors during playback. The numbers are displayed in hexadecimal from 00 to FF. Displays the total number of errors. Displayed as "total xx". The number is displayed in hexadecimal from 00 to FF. Displays the last ten errors. Displayed as "0x [email protected]@". "x" indicates the history number. A smaller number indicates a more recent error (00 is the latest). @@ indicates the error code. The error history number is selected by turning the l AMS L knob. Displays the last five retry addresses. Displayed as "xx ADRS yyyy". "xx" indicates the history number. "yyyy" indicates the cluster where the retry occurred. The history number is selected by turning the l AMS L knob. Mode which erases the error history and the retry address history [Operation procedure] 1 When "er refresh" is displayed, press the l AMS L knob. 2 After the display changes to "er refresh?", press the YES button. The "Complete!" message indicates that the operation has ended. After executing this mode, be sure to check the following: и The data has been erased. и The mechanism runs normally when recording and playback are performed. Mode which erases the total time of "op rec tm" and "op play tm" These histories are used as a guideline for the time to replace the optical pick-up. After replacing the optical pick-up, perform this operation to erase the history. [Operation procedure] 1 When "op change" is displayed, press the l AMS L knob. 2 After the display changes to "op change?", press the YES button. The "Complete!" message indicates that the operation has ended. Mode which erases the total time of "spdl rp tm" The history is used as a guideline for the time to replace the spindle motor. After replacing the spindle motor, perform this operation to erase the history. [Operation procedure] 1 When "spdl change" is displayed, press the l AMS L knob. 2 After the display changes to "spdl change?", press the YES button. The "Complete!" message indicates that the operation has ended.

op play tm

spdl rp tm

retry err

total err err history

retry adrs

er refresh

op change

spdl change

Table of Error Codes Error Code Details of Error Error Code 10 Loading error 31 12 The combination of loading switches is not acceptable. 40 20 Time out. The beginning of PTOC cannot be read. 41 21 Contents error. The beginning of PTOC can be read. 42 22 Time out. Access to UTOC failed. 43 23 Time out. UTOC cannot be read. 50 24 Contents error of UTOC 30 Playback start error 51

Details of Error There is an abnormality in the sector contents. An error caused a retry during continuous recording. Retry was executed due to DRAM overflow. Retry was executed during TOC writing. S.F Edit was aborted due to retry. Address cannot be read although access processing is not in progress. Runaway due to focus NG

5

SECTION 1 SERVICING NOTE
HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH IS TURNED OFF, AND LASER POWER CHECK 1 Remove the 16 screws (BVTT3 x 8) from the bottom plate. (Refer to Section 3 "Disassembly" Loading panel.) 2 Remove the bottom plate. 3 Rotate the pully gear in the direction of the arrow A and open the tray in the direction of the arrow B. 4 When checking the laser power, remove beforehand the loading panel by removing the two screws (M2.6) and sliding aside the loading panel becouse the cable of the laser power meter can be pinched by the loading panel. (Refer to Section 3 "Disassembly" Loading panel.)

Pulley gear

Remove the Loading panel

A

Two screws (M2.6)

B

Tray assembly

Forced Reset
Use this function when the MDS-JA333ES cannot be operated normally due to hung-up of the microprocessor. It is recommended to use this function when you cannot exit the test mode or the retry-cause-display mode, or when the normal operation cannot be performed after the MDS-JA333ES is disassembled once then re-assembled.

To inspect the printed circuit boards, use the following jigs. и Extension jig to inspect the DIG board Jig for extension between DIG board CN801 and DA board CN501 Part code number: J-2501-075-A 1 pc 21 pins with 1 mm Jig for extension between DIG board CN807 and FL board CN701 Part code number: J-2501-199-A 1 pc 21 pins with 1 mm и Extension jig to inspect the AD board Jig for extension between DIG board CN802 and AD board CN301 Part code number: J-2501-200-A 1 pc 11 pins with 1 mm

6

[BD Board Waveform Check Tool]
Use of the exclusive tool (J-2501-149-A) is convenient to check the waveforms on the BD board. GND I+3V IOP TEO VC RF : Ground terminal : For measuring IOP (Checking deterioration of the optical pick-up laser) : For measuring IOP (Checking deterioration of the optical pick-up laser) : TRK error signal (traverse adjustment) : Reference level for when checking signals : RF signal (jitter check)

CN110

6pin connector

5pin connector

RF

VC TEO IOP I+3V GND

Schematic diagram of the connecting tools
1 RF VC TEO To MDM-3 IOP 5 I-3V 1 VC RF TEO To MDM-5 IOP To MDM-6 I+3V 6 GND

RF VC TEO IOP I+3V GND

7

[How to Record and Display the IOP Data When Replacing the Optical Pick-up and Non-volatile Memory (BD Board IC171)]
The IOP data that is indicated on the optical pick-up, can be saved in the non-volatile memory of the MDS-JA333ES. Saving the IOP data in the memory eliminates the needs to look at the printed value on the label that is attached on the surface of optical pick-up, and enables to view the IOP data on display. When the optical pick-up is replaced or when the non-volatile memory (IC171 on BD board) is replaced, save the IOP value that is printed on the label on the surface of optical pick-up by the following procedure.

How to Record the IOP Data: 1. While pressing the lAMSL knob and the x button at the same time, connect the AC power plug to the wall outlet, then remove your hands from the lAMSL knob and x button at the same time. When the MDS-JA333ES enters the test mode, the message "[Check]" appears. 2. Rotate the lAMSL knob until the message "Service" appears. Then press the YES button. 3. Rotate the lAMSL knob until the message "Iop Write" (C05) appears. Then press the YES button. 4. "[email protected]@@[email protected]" (@ is arbitrary number) appears and the values that can be changed as desired flash. 5. Input the IOP value that is printed on the optical pick-up. Selection of alphanumeric characters : Rotate the lAMSL knob. Selection of digit : Press the lAMSL knob. 6. Press the YES button. Then display changes to "Measu= @@@[email protected]" (@ is arbitrary number). 7. The value that is shown step 6, is the result adjustment and should not be saved. So leave the value of step 6 as it is, and press the YES button. 8. The message "Complete!" appears for a moment, and the value is saved in the non-volatile memory. The message "Iop Write" (C05) appears. 9. Upon completion of data saving, press the REPEAT button.

How to Display the IOP Data: 1. While pressing the lAMSL knob and the x button at the same time, connect the AC power plug to the wall outlet, then remove your hands from the lAMSL knob and x button at the same time. When the MDS-JA333ES enters the test mode, the message "[Check]" appears. 2. Rotate the lAMSL knob until the message "Service" appears. Then press the YES button. 3. Rotate the lAMSL knob until the message "Iop Write" (C05) appears. Then press the YES button. 4. The message "@@[email protected]/##.#" appears. The contents that are saved in the non-volatile memory appear. @@[email protected] : The IOP value that is printed on optical pick-up ##.# : The IOP value after adjustment 5. To exit the data display, press the lAMSL knob or the MENU/NO button to show the message "Iop Read" (C26). Then press the REPEAT button.

8

[Checks before Part Replacement and Adjustment]
Cause of faulty can be approximately located by performing the following checks before starting the repair work. Refer to Section "5. Electrical Adjustment" the check procedure. Judgment criterion(NG when the measurement value is out of the specification value) и 0.9 mW power Specification value: 0.8 to 0.96 mW и 6.2 mW power Specification value: 6.0 to 6.4 mW и Iop (when 7 mW) The Iop value that is shown on the optical pick-up: +/- 4 mA и Traverse waveform Specification value: Offset 5% or less и Checking the error rate Specification value: All points of a and b CI error 220 or less AD error 2 or less и Checking the error rate Specification value: a. When using the test disc (MDW-74/AU-1) CI error 50 or less AD error 2 or less b. When using the check disc (TDYS-1) CI error 20 or less и Checking the error rate in C PLAY Specification value: CI error 50 or less AD error 2 or less Remedial measure in case of NG и Cleaning the optical pick-up и Readjustment и Replacing the optical pick-up и Replacing the optical pick-up

Laser power check (Refer to section 5-6-2.)

Traverse check (Refer to section 5-6-3.) Focus bias check (Refer to section 5-6-4.)

и Replacing the optical pick-up и Replacing the optical pick-up

C PLAY check (Refer to section 5-6-5.)

и Replacing the optical pick-up

Self record/playback check (Refer to section 5-6-6.)

Temperature compensation offset check (Refer to section 5-6-1.)

и NG when "[email protected]@(##)(NG" appears (@@ and ## are arbitrary numbers.)

In case of NG all the time: и Replacing the overwrite head и Check disconnection of the circuits around the overwrite head In case of intermittent NG: и Check deformation of overwrite head и Check mechanism around the sled и Check disconnection of the circuits around the D101 (BD board) и Check signals around the IC101, IC121, CN102 and CN103 (BD board)

Note: The judgment criterion is shown for the purpose of judging if the performance is acceptable or not. This is not the specification value for adjustment. Use the specification value for adjustment when the MDS-JA333ES is going to be adjusted.

9

[Retry Cause Display Mode]
и In this test mode, the retry causes of the MDS-JA333ES during record and stop modes can be displayed on the fluorescent display tube. This mode becomes the "track mode" during playback in which the track information is available. This mode is useful for locating the defective area of the MDS-JA333ES. The contents to be displayed are as follows. During record and stop modes: Retry cause, number of retries, and number of retry errors During playback mode: Information such as disc types under playing back, position of playback and copyright. Each information is displayed in hexadecimal number.

и

Procedure: 1. Load a recordable disc whose contents can be erased, into the MDS-JA333ES. 2. Press the MENU/NO button. After the message "Edit Menu" appears on the fluorescent display tube, rotate the lAMSL knob until the message "All Erase ?" appears. 3. Press the YES button. (Alternately the lAMSL knob can also be pressed.) 4. The message "All Erase ?" appears on the fluorescent display tube. Then the numerals on the music calendar flash. 5. Press the YES button, then the message "Complete !" appears. Press the x button immediately, and wait for about 15 seconds while keeping pressing the button. (Alternately the lAMSL knob can be pressed instead of YES button.) 6. When the characters "TOC" have disappeared from the fluorescent display tube, remove your hands from the x button. 7. Press the zREC button to enter the record standby mode. Then press the X button to start recording. 8. When you want to enter the "Track mode", press the N button to start playback. 9. To exit the test mode, press the ?/1 button. The message "TOC" flashes, the MDS-JA333ES enters the standby mode and exits the test mode. Fig. 1 Reading the Test Mode Display (During record and stop modes) [email protected]@c##e** Display on the fluorescent display tube @@ : Cause of retry ## : Number of retries ** : Number of retry errors Fig. 2 Reading the Test Mode Display (During playback) @@ ####** $$ Display on the fluorescent display tube @@ ## ** $$ : Parts No. (Area name that is given on the TOC) : Cluster address (physical address on the disc) : Sector : Track mode (track information such as copyright information of each part, etc.)

How to read the retry cause display: Higher Bits Hexadecimal 8 4 2 1 Bit b7 b6 b5 b4 Binary number 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 Reading the Display: Convert the hexadecimal display of each digit into binary display. If more than two causes, they will be added. Example When 42 is displayed: Higher bit: 4 = 0100 b6 Lower bit: 2 = 0010 b1 In this case, the retry cause is combined of "CLV unlock" and "ader5". Example When A2 is displayed: Higher bit: A = 1010 b7+b5 Lower bit: 2 = 0010 b1 In this case, the retry cause is combined of "Access fault", "IVR rec" and "ader5". The reading of the track mode display is as follows. Lower Bits 8 4 2 1 Hexadecimal b3 b2 b1 b0 0 0 0 1 01 02 0 0 1 0 0 1 0 0 04 1 0 0 0 08 10 0 0 0 0 0 0 0 0 20 40 0 0 0 0 0 0 0 0 80

Name of retry cause

When 1

shock When track jump (shock) is detected ader5 When ADER is counted five times or more continuously Address is not continuous When ADIP address is not continuos DIN unlock Detects DIN unlock is detected FCS unlock When focus is unlocked IVR rec error When signal level of the ABCD signal exceeds the specified range CLV unlock When CLV is unlocked Access fault When access operation is not performed normally

10

Higher Bits Hexadecimal 8 4 2 1 Bit b7 b6 b5 b4 Binary 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0

Lower Bits Details Hexa8 4 2 1 decimal When 0 When 1 b3 b2 b1 b0 0 0 0 1 01 Emphasis OFF Emphasis ON 0 0 1 0 02 Monaural Stereo 0 1 0 0 04 This is 2-bit display. Normally 01. 1 0 0 0 08 01:Normal audio. Others:Invalid 0 0 0 0 10 Audio (Normal) Invalid 0 0 0 0 20 Original Digital copy 0 0 0 0 40 Copyright exists No copyright 0 0 0 0 80 Write prohibited Write is allowed

Reading the Display: Convert the hexadecimal display of each digit into binary display. The several causes are added and displayed. Example When 84 is displayed: Higher bit: 8 = 1000 b7 Lower bit: 4 = 0100 b2 This example shows that "Emphasis: OFF", "Monaural", "Original", "Copyright exists" and "Writing is allowed" because b2 and b7 are 1 while all other bits are 0. Example When 07 is displayed: Higher bit: 0 = 0000 all 0 Lower bit: 7 = 0111 b0+b1+b2 This example shows that "Emphasis: ON", "Stereo", "Original", "Copyright exists" and "Writing is prohibited" because b0, b1 and b2 are 1 while all other bits are 0. Hexadecimal Binary Conversion Table Hexadecimal Binary Hexadecimal 0 1 2 3 4 5 6 7 0000 0001 0010 0011 0100 0101 0110 0111 8 9 A B C D E F

Binary 1000 1001 1010 1011 1100 1101 1110 1111

11

SECTION 2 GENERAL
Front panel description

This section is extracted from instruction manual.

1 23456 78

9

q; qa qs qd

qf

qg

wf

wd

ws

wa

w;

ql

qk

qj

qh

1 ?/1 (power) switch/STANDBY indicator (14) (23) Press to turn on the deck. When you turn on the deck, the STANDBY indicator turns off. When you press the switch again, the deck turns off and the indicator lights up. 2 Remote sensor (10) Point the remote toward this sensor (g) for remote operations. 3 FILTER button (43) Press to select the type of the digital filter. 4 S.F EDIT button (38) Press to change the recorded level after recording. 5 PLAY MODE button (27) (42) Press to select Shuffle Play or Program Play or resume normal play. 6 REPEAT button (26) Press to play tracks repeatedly. 7 TIME button (18) (22) Press to display the remaining time. 8 DISPLAY/CHAR button (9) (15) (17) (24) (27) (35) Press while the deck is Recording or recording pause Stopped Recording Playing Editing To Adjust the recording level Display disc information or the contents of a program Display information on the track being recorded Display information on the current track Select the type of characters to be input

qh OPEN/CLOSE A button (14) (23) Press to insert or eject the MD. N button (14) (23) Press to start play. X button (14) (23) Press to pause play or recording. Press again to resume play or recording. x button (15) (23) Press to stop play or recording, or cancel the selected operation. z button (14) (18) (19) Press to record to the MD, monitor the input signal, or mark track numbers. qj m / M buttons (25) (27) (30) (35) Press to locate a portion within a track, change the contents of a program, or change the input character. qk MDLP indicator (16) (23) Lights when the deck is playing or recording to an MD in LP2 or LP4 Stereo mode. ql MD disc tray (14) (23) Insert an MD as illustrated below.

With the arrow pointing toward the deck

With the labeled side up
9 Display window (8) Shows various information. 0 CLEAR button (27) (35) Press to cancel the selection. qa MENU/NO button (19) (27) (30) (39) (52) Press to display the Edit Menu or Setup Menu. qs AMS control (12) (14) (23) (30) (39) Turn to locate tracks, set the clock, select the input characters, or select a menu item and a setting value. qd YES button (18) (27) (30) (39) Press to carry out the selected operation. qf DIGITAL REC LEVEL control (17) Turn to adjust the digital recording level. qg ANALOG REC LEVEL L/R control (18) Turn to adjust the analog recording level. w; REC MODE selector (16) Use to set the REC MODE to STEREO, MONO, LP2 or LP4. wa INPUT selector (14) Use to select the input jack (or connector) of the program source to be recorded. ws PHONE LEVEL control (23) Turn to adjust the volume of the headphones. wd PHONES jack (23) Connect headphones to this jack. wf TIMER selector (42) Use to set the timer for recording (REC) or playing (PLAY). Set to OFF to turn off the timer.

12

Remote control description
8 x button (15) (23) Press to stop play or recording, or cancel the selected operation. 9 X button (14) (23) Press to pause play or recording. Press again to resume play or recording. 0 x button (14) (18) (19) Press to record to the MD, monitor the input signal, or mark track numbers. qa MUSIC SYNC button (21) Z Press to start Music Synchro-recording. qs T.REC button (20) Z Press to start Time Machine Recording. qd DIGITAL REC LEVEL/ANALOG OUT LEVEL +/Г buttons (17) (23) Z Press to adjust the digital recording or analog output level. qf FILTER button (43) Press to select the type of the digital filter. FADER button (40) Z Press to perform Fade-in Play/Recording or Fade-out Play/Recording. qg CD PLAYER X button (21) Z Press to pause the CD play. Press again to resume CD play. CD PLAYER ./ > buttons (21) Z Press to locate tracks on the CD. qh CD-SYNC STOP button (21) Z Press to stop CD Synchro-recording. CD-SYNC START button (21) Z Press to start CD Synchro-recording. CD-SYNC STANDBY button (21) Z Press to enter standby for CD Synchro-recording. qj m / M buttons (25) (27) (30) (35) Press to locate a portion within a track, change the contents of a program, or shift the cursor to the right. qk ./ > buttons (14) (23) (31) (39) Press to locate tracks, or select a menu item and a setting value. ql H button (14) (23) Press to start play. w; NAME-IN buttons NAME button (35) Z Press to add the name or change the name of a track or an MD. CHAR button (35) Z Press to select the type of characters to be input. NUM button (35) Z Press to input numbers. wa REPEAT button (26) Press to play tracks repeatedly. A y B button (26) Z Press to select Repeat A-B Play. ws PLAY MODE buttons CONTINUE button (27) Z Press to select normal play. SHUFFLE button (27) Z Press to select Shuffle Play. PROGRAM button (27) Z Press to select Program Play. wd DISPLAY button (9) (15) (17) (24) (27) Press to select the information to be displayed in the window. SCROLL button (24) Z Press to scroll the name of a track or an MD. TIME button (18) (21) Press to display the remaining time. wf MENU/NO button (19) (27) (30) (39) (52) Press to display the Edit Menu or Setup Menu. YES button (18) (27) (30) (39) Press to carry out the selected operation. wg OPEN/CLOSE Z button (14) (23) Press to insert or eject the MD.

OPEN/CLOSE

wg wf wd ws
DISPLAY SCROLL

MENU/NO

YES

1

TIME

CONTINUE A

PLAY MODE DATE SHUFFLE PROGRAM RECORDED PRESENT B C D E

2

F

1 6 11 16 21
>25
NAME

G

2 7 12 17 22

H

3 8 13 18 23
A B

I

4 9 14 19 24
A.SPACE

J

5 10 15 20 25
M.SCAN

K

L

M

N

O

P

Q

R

S

T

3

U

V

W

X

Y

Z

--

.

,

wa
/

REPEAT

?
NAME IN

!

(
CLEAR NUM

)
P.HOLD

w; ql qk

CHAR

T.REC

MUSIC SYNC

qj qh qg
STOP CD-SYNC START STANDBY FILTER

4 5 6 7 8 9 0 qa qs qd

CD PLAYER

FADER

DIGITAL REC LEVEL /ANALOG OUT LEVEL

qf

1 ?/1 (power) switch (14) (23) Press to turn on the deck. When you turn on the deck, the STANDBY indicator on the deck turns off. When you press the switch again, the deck turns off and the indicator lights up. 2 DATE RECORDED button (13) Z Press to display the recording date and time. DATE PRESENT button (13) Z Press to display the current date and time. 3 Letter/number buttons (24) (35) Z Press to input letters or numbers or select a track. 4 M.SCAN button (24) Z Press to scan a track within a range of 6 to 20 seconds. 5 A.SPACE button (29) Z Press to insert a three-second blank space between tracks or to pause play after each track. 6 P.HOLD button (18) Z Press to turn on and off the Peak Hold Function. 7 CLEAR button (27) (35) Press to cancel the selection.

13

Display window description

1

2

3

4

5

6

7
1 REMOTE indicator Lights when the MD is being controlled by an external device connected to the deck. 2 Disc name and track name indicators display DISC indicator Lights when the disc information (etc.) is shown. Name display Displays disc and track names, Edit Menu parameters, and Setup Menu parameters (etc.). The track name appears instead of the disc name during play. When the MD or the track has no name, "No Name" appears. TRACK indicator Lights when the track information (etc.) is shown. 3 Playback indicators REP indicators (26) Light when the deck is set to Repeat Play. и "REP" lights when the deck is set to repeat the entire disc. и "REP 1" lights when the deck is set to repeat just one track. и "REP A-B" lights when the deck is set to repeat a specific portion within a track. SHUF indicator (27) Lights when the deck is set to Shuffle Play. PGM indicator (27) Lights when the deck is set to Program Play. HS indicator Lights during playing or playing pause. 4 Recording and editing indicators L.SYNC indicator (19) Lights when the deck is set to assign track numbers automatically during analog recording. Rec mode indicators (16) These indicators turn off during stereo recording/ playback. и "MONO" lights when the deck is set to Monaural Recording mode or playing an MD recorded in Monaural Recording mode. и "LP2" lights when the deck is set to LP2 Stereo Recording mode or playing an MD recorded in LP2 Stereo Recording mode. и "LP4" lights when the deck is set to LP4 Stereo Recording mode or playing an MD recorded in LP4 Stereo Recording mode. SYNC indicator (21) Lights during synchro-recording. REC indicator Lights during recording. TOC indicators (16) (31) и "TOC" lights to indicate the presence of TOC data that has not been written to the disc. "TOC" flashes when the TOC data is being written. и "TOC EDIT" lights during edit operations.

8
5 INPUT indicators (14) и "OPT1" lights when the program source connected to the DIGITAL IN OPT1 connector is selected. и "OPT2" lights when the program source connected to the DIGITAL IN OPT2 connector is selected. и "COAX" lights when the program source connected to the DIGITAL IN COAXIAL jack is selected. и "ANALOG" lights when the program source connected to the ANALOG IN jacks is selected. 6 Music calendar Shows all the track numbers within a grid if the MD is a premastered disc, or without a grid if the MD is a recordable disc. If the total number of tracks exceeds 15, B appears to the right of number 15 in the music calendar. 7 SLEEP indicator (41) Lights when the deck is set to turn off automatically after specified minutes. 8 Level meters Display the audio signal levels during playing and recording. Note The display format that you have selected in each of the deck statuses (play, recording, etc.) will appear whenever the deck enters that status and you press DISPLAY/CHAR (or DISPLAY) or TIME until you change the format to another (see the following sections for details). If you disconnect the AC power cord, however, all the displays will revert to their default (i.e., the factory set display) the next time you turn on the deck. To change the display in stop mode Press DISPLAY/CHAR (or DISPLAY) repeatedly to change the display. Each press of the button changes the display as follows:

Total number of tracks, total recorded time and disc name1) r The contents of a program (only when "PGM" lights up) r Level of the input signal (setting value of the recording level) r Pitch display r DF (digital filter) display
1) "No Name" appears when the disc has no name.

14

Rear panel description

1 ANALOG IN jacks (11) (14)

Use to input analog signals from other components.
2 ANALOG OUT jacks (11)

1
O I O

2

34 56 7
DII I COI O1 O2 DII O COI OIC CORO 1

Use to output analog signals to other components.
3 DIGITAL IN COAXIAL jack (11) (14)

Connect a digital coaxial cable to input digital signals from other components.
4 DIGITAL IN OPT connectors (11) (14)

R

R

Connect a digital optical cable to input digital signals from other components. There is no distinction of OPT1 and OPT2 connectors.
5 DIGITAL OUT COAXIAL jack (11)

Connect a digital coaxial cable to output digital signals to other components.
6 DIGITAL OUT OPTICAL connector (11)

Connect a digital optical cable to output digital signals to other components.
7 CONTROL A1щ№щ№ jacks (11) (44)

Setting the clock
Once you set the MD deck's internal clock, the MD deck will automatically record the date and time of all recordings. For USA and Canadian models, date is displayed in the order of month, day, year, and time on a 12-hour clock. For European model, date is displayed in the order of day, month, year, and time on a 24-hour clock.
Note

Changing the clock setting(s)

1 2 3 4

Do steps 1 and 2 above. Press AMS or ./ > repeatedly until the setting you want to change flashes. Turn AMS (or press ./ > repeatedly) to change the setting, then press AMS. To complete the setting, press AMS or ./ > repeatedly until the minute indication flashes, then press AMS or YES.

The display windows below are of USA and Canadian models.
MENU/NO AMS YES

Displaying the current date and time Z
You can display the current date and time any time while the power is on.
Press DATE PRESENT.

Each press of the button changes the display as follows:
m/M

1 2

While the deck is stopped, press MENU/NO twice.

Current display r Date r Time

"Setup Menu" appears in the display.
Turn AMS (or press ./ > repeatedly) until "Clock Set ?" appears, then press AMS.

The month (or day) indication starts flashing.

z For precise date and time stamping of recordings Reset the time at least once a week.
Note

3

Turn AMS (or press ./> repeatedly) to enter the current day, then press AMS.

The month (or day) indication stops flashing, and the day (or month) indication starts flashing.

If the AC power cord is disconnected for a long time, the memorized clock settings will disappear and "Initialize" will flash in the display the next time you plug in and turn on the deck. If this happens, reset the clock.

Displaying the recorded date Z
You can then check the recorded date and time of a track.

1 4
Repeat step 3 to enter the month, day, year, hour, and minute.

Press ./ > or number buttons to locate the track you want to check. Press DATE RECORDED.

2

"No Date" appears if the internal clock has not been set or the track was recorded to another MD deck without a date and time stamp function.

When you enter the minute, the set date and time appear again followed by "Complete!!", and the clock settings are completed.

15

SECTION 3 DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.

3-1. CASE
4 Remove the upper case in the direction of the arrow A. 2 Two screws (TP,FLAT HEAD) A

3 Two screws ( TP,FLAT HEAD)

1 Two screws (TP,FLAT HEAD)

3-2. LOADING PANEL

5 Loading panel

3 Rotate the pulley gear in the direction of the arrow A, and open the tray in the direction of the arrow B.

A

4 Two screws (M2.6)

Tray assembly

B

2 Bottom plate

1 Fourteen screws (3 О 8)

16

3-3. FRONT PANEL ASSEMBLY
5 Two screws (3О8) 6 Two bracket (F) 3 Connector (CN651) 2 Connector (CN303)

1 Flat type wire (CN807)

7 Front panel assembly 4 Six screws (3 О 8)

3-4. MD MECHANISM DECK
1 Two screws (BVTT3 О 6) 2 Two lug terminals 3 Four screws (BVTT 3 О 6) 4 Two flat type wires (CN102, 103)

(CN102)
5 Remove the MD mechanism deck in the direction of the arrow A.

(CN103)

6 Connector (CN202) A

17

3-5. TRAY ASSEMBLY
6 Bracket (top) 2 Two screws (BV2.6) 9 Screw (BV2.6) 0 Stopper (shaft B) 7 Three gears (top) 3 Lug

4 Two screws (BV2.6) 5 Lug

qa Shaft

8 Three gears (top)

B qs Remove the tray assembly in the direction of the arrow B.

A

1 Rotate the pully gear in the direction of the arrow A and pull the tray assembly.

NOTE FOR INSTALLATION
Slider assembly

Slider assembly Pin When the tray assembly is attached, move the slider assembly in the direction of the arrow B so that the pin is located in the position as shown above. Then attach the tray assembly.
B

A

When the gears (top) (two gears on the front) are attached, pull the tray assembly out in the direction of the arrow A and align the rack (L) and slider (D) assembly as shown.

Mark

Slider (D) assembly

Tray assembly

Rack (L) Gear (top) Slider (D) assembly

18

3-6. BU HOLDER ASSEMBLY
5 Two scews (BV2.6) 6 Two collars (damper)

2 Two scews (BV2.6) 3 Two collars (damper)

7 Two compression springs

4 Two compression springs

8 BU holder assembly

Fig. A

Slider
1 Turn the pully gear to align the slider with of the rib. (Refer to Fig. A.)

Rib

3-7. MOTOR (LOADING) ASSEMBLY (M10)
2 Two screws (BV2.6)

3 Gear assembly

6 Motor (loading) assembly (M10) 5 Two screws (B2 О 3) 4 Belt (loading)

1 Connector (CN14)

19

3-8. BASE UNIT (MBU-5J)
1 Leaf spring (UDL)

2 Leaf spring (UDR) 3 Remove the holder assembly in the direction of the arrow A.

A

6 Base unit

4 Two screws (BV2.6)

5 Two screws (BV2.6)

3-9. BD BOARD
6 Two precision screws (+P1.7 О 2.5)

7 Claw

4 Flexible board (CN104)

5 Tapping screw (M1.7) 8 BD board

2 Remove the soldering from the push switch.

1 Remove the soldering of the lead wires from the spindle motor assembly. 3 Flexible board (CN101)

20

3-10. OVER LIGHT HEAD (HR901)

3 Over light head (HR901)

2 Screw (P1.7 О 6)

1 Flexible board (CN104)

3-11. MINI DISC DEVICE (KMS-260B/J1N)
3 Screw (B2 О 8)

4 Leaf spring (shaft)

5 Main shaft 6 Remove the mini disc device (KMS-260B/J1N) in the direction of the arrow A.

2 Flexible board (CN104) 1 Flexible board (CN101) A

21

SECTION 4 TEST MODE
4-1. Precaution on Using the Test Mode
и Be sure to insert and eject a disc after confirming that the disc in the MDS-JA333ES has come to complete stop because the loading related movements of the mechanism are performed without any relationship with the test mode. Disc does not stop rotating even through the A button is pressed while disc is rotating in the modes such as continuous playback and continuous recording. Therefore, the disc is ejected while it is rotating. Be sure to press the MENU/NO button, then press the A button after a disc has completely stopped of its rotation.

4-1-1. Modes in Which Recording Laser Emits the Light and the Button Operations и Continuos recording mode (CREC 1MODE) и Laser power check mode (LDPWR CHECK) и Laser power adjustment mode (LDPWR ADJUS) и IOP check (IOP compare) (Not used with the MDM-6J and MBU-5J) и IOP value non-volatile writing (IOP NV Save) (Not used with the MDM-6J and MBU-5J) и Traverse (MO) check (EF MO CHECK) и Traverse (MO) check (EF MO ADJUS) и When the zREC button is pressed

4-2. How to Enter the Test Mode
There are two methods to enter the test mode as follows. Method 1: Connect the power plug to the outlet while pressing the lAMSL knob and x button at the same time, and remove the lAMSL knob and x button at the same time. When the unit enters the test mode, "[Check]" appears. The three groups can be switched, ...... [Check] [Service] [Develop] ..... , by rotating the lAMSL knob. The Develop group is not used for service. If you enter the group mistakenly, immediately press the MENU/NO button and exit the mode. Method 2: Connect the power plug to the outlet while pressing the lAMSL knob, and remove the lAMSL knob. When the unit enters the test mode, "TEMP CHECK" (C12) appears. When the test mode is entered using this method, the contents of check group at method 1 can be performed.

4-3. Exiting the Test Mode
Press the REPEAT button. The MDS-JA333ES enters the standby status and exits the test mode.

4-4. Basic Operation of the Test Mode
All operations are performed using the lAMSL knob, YES button, and MENU/NO button. The functions of these button are as follows. Function name MENU/NO button YES button lAMSL knob (right/left) lAMSL knob (pushed) Function Chancels or moves to the upper hierarchy Decision Selection Decides the sub-menu

22

4-5. Selecting the Test Mode
There are 26 types of the test mode. The group can be switched by rotating the lAMSL knob. All the adjustments and checks for service can be performed in the test mode of the service group. There is the Develop group, but it is not used for service. If you enter the group mistakenly, immediately press the MENU/NO button and exit the 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 Scurve CHECK VERIFYMODE DETRK CHECK 0920 CHECK Iop Read Iop Compare ADJ CLEAR INFOMATION CPLAY1MODE CREC 1MODE и и и

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 C34 C35

Contents Automatic self-diagnosis Error history display, clear Temperature compensation offset adjustment Laser power adjustment IP data writing Reads the current IOP value with microprocessor and writes it to nonvolatile data Traverse (MO) adjustment Traverse (CD) adjustment Focus bias check Focus /tracking gain adjustment (MO) Focus /tracking gain adjustment (CD) Temperature compensation offset check Laser power check Traverse (MO) check Traverse (CD) check Focus bias adjustment S curve check Non-volatile memory check Detract check Outermost circumference check IOP data display Comparison to the initial IOP value written in non-volatile data Initialization of non-volatile memory of adjustment value Display of microprocessor version, etc. Continuous playback mode Continuous recording mode

Mark
Chck

Group
Service

« « « « « « « « « « « « « « « «

О О О О

« « « « « « « « « « « « « «

« « « « « «

и

For detailed description of each adjustment mode, refer to Section 5 "Electrical Adjustments". For "Err Display" (C02), refer to the self-diagnosis function of page 4. If a different adjustment mode has been selected by mistake, press the MENU/NO button to exit from it. The items marked О in the mark are not used in servicing, therefore they are not detailed. If select these modes accidentally, press the MENU/NO button immediately to exit from it. Be careful especially when using the test mode of the Develop group. The machine may not run correctly. AUTO CHECK, Iop NV Save and Iop Compare cannot be used with the MDM-6J and MBU-5J.

23

4-5-1. Operating the Continuos Playback Mode 1. Entering the continues playback mode 1) Load the disc into the unit. (recordable disc or disc for playback) The disc is loaded by pushing the tray. 2) Rotate the lAMSL knob to display "CPLAY1MODE" (C34). 3) Press the YES button to change the display to "CPLAY1MID". 4) When access completes, the display changes the display to "C = AD = ". Note : The value of the " " displayed on the screen indicates error rate and "ADER". 2. Changing the parts to be played back 1) Press the YES button during continuos playback to change the display as shown and move the played back part.
"CPLAY1MID" "CPLAY1OUT" "CPLAY1IN"

2) When access completes, the display changes to "C = AD = ". Note : The value of the " " displayed on the screen indicates error rate and "ADER". 3. Ending the continuos playback mode 1) Press the MENU/NO button to change the display to "CPLAY1MODE" (C34). 2) Press the A button to eject the disc. Note : The playback start addresses for IN, MID, and OUT are as follows. IN : 40h cluster MID : 300h cluster OUT : 700h cluster

24

4-5-2. Operating the Continuos Recording Mode (Use this mode for self record/playback check only) 1. Entering the continuos recording mode 1) Load the recordable disc to the unit. The disc is loaded by pushing the tray. 2) Rotate the lAMSL knob to display "CREC 1MODE" (C35). 3) Press the YES button to change the display to "CREC1MID". 4) When access completes, the display changes the display to "CREC1( " and REC illuminates. Note : The value of the " " displayed on the screen indicates the address of the recorded position. 2. Changing the parts to be recorded 1) Press the YES button during continuos playback to change the display as shown and move the played back part. during moving. "CREC1MID" "CREC1OUT" "CREC1IN"

REC disappears

2) When access completes, the display changes to "CREC1( " and REC disappears. Note : The value of the " " displayed on the screen indicates the address of the recorded position. 3. Ending the continuos recording mode 1) Press the MENU/NO button. The display changes to "CREC 1MODE" (C35) and REC disappears. 2) To eject the disc, press the A button. Note 1: The playback start addresses for IN, MID, and OUT are as follows. N : 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 continuos recording for long periods of time above 5 minutes. Note 4: During continuos recording, be careful not to apply vibration. 4-5-3. No-Volatile Memory Mode (EEP MODE) This mode reads and writes the contents of the non-volatile memory. It is not used in servicing. If selecting this mode accidentally, press the MENU/NO button immediately to exit it.

4-6. Functions of Other Buttons
Function name N x M m REC MODE (other models/SF EDIT/SCROLL) PLAY MODE DISPLAY/CHAR A/OPEN/CLOSE REPEAT/POWER Main contents Sets continuos playback when pressed in the STOP state. When pressed during continuos playback, the tracking servo turns ON/OFF. Stops continuos playback and continuous recording The sled moves to the outer circumference only when this is pressed The sled moves to the inner circumstance only when this is pressed Switches between the pit and groove modes when pressed Switches the spindle servo mode (CLV S CLV A) Switches the display when pressed Removes the disc Exits test mode

25

4-7. Test Mode Displays
The DISPLAY key is used to switch display modes. The display modes are switched in the following order each time the DISPLAY key is pressed. Order 1 2 3 4 5 6 7 8 Description MODE display Error rate display Address display Auto gain display Detrack display IVR display Displays C1 error and JITTER Displays AD error and JITTER Example of display CPLAY1 ( C= AD= h s AG= / [ ] ADR= # 0000 [ ][ ][ ] J C J AD=

When CPLAY or CREC starts, the display is forced to switch to 2 as initial mode. Supplementary explanation of each display 1. MODE display "TEMP ADJUS" (C03), "CPLAY1MODE" (C34), etc. are displayed. 2. Error rate display Error rates are displayed as follows. AD= C= C= means the C1 error and AD= means ADER. 3. Address display Addresses are displayed as follows. h= s= (pit block of recordable disc and disc for playback only) h= a= (groove of recordable disc) h= means the header address, s= means the SUBQ address and a= means the ADIP address. * When the address cannot be read, "-" is displayed. Displays other than the above ones are not used for service.

4-8. Meaning of Other Displays
Display H X z REC SYNC (other models/TOC EDIT) L. SYNC (other models/A.SPACE) OVER B/1 (REP portion) A-/REP TRACK/(LP)4/calender frame DISC/LP2 SLEEP/SHUF MONO PROGRAM MODE display Servo ON Tracking servo OFF Recording mode OFF CLV low speed mode ABCD adjustment completed Tracking offset cancel ON Tracking auto gain OK Focus auto gain OK Pit High reflection CLV-S CLV LOCK EF BAL change Contents Off Servo OFF Tracking servo ON Recording mode OFF CLV normal mode Tracking offset cancel OFF

Groove Low reflection CLV-A CLV UNLOCK

4-9. Information
Displays the version of software. [Operation procedure] 1. Press the YES button while "INFORMATION" is displayed. 2. The version of the software will be displayed. 3. End this mode with the MENU/NO button.

4-10. Countermeasure when MEMORY NG Appears
If there is an abnormality in non-volatile memory data, "E001" / "MEMORY NG" appears so that the MO deck is not operated. If this happens, immediately enter the test mode and do the following. [Operation procedure] 1. Enter the test mode. (Refer to Section 4-2.) 2. The display for selecting the test mode normally appears. However, if there is an abnormality in non-volatile memory data, the following characters appears: "INIT EEP?" 3. Press the x button and A button at the same time. 4. Rotate the lAMSL knob to select "MBU-5J". 5. Press the lAMSL knob. If the non-volatile memory data succeeds in being rewriting, the mode returns to the norma test mode and the display for selecting modes appears.

26

SECTION 5 ELECTRICAL ADJUSTMENTS
5-1. On Part Replacement and Adjustment
и Perform the checks and adjustments of the MDM and MBU blocks following the procedure below . The procedure is changed depending on the replaced part.
Start и Abbreviation OP : Optical pick-up OWH : Overwrite head

и Temperature compensation offset check и Laser power check и Traverse check и Focus bias check и C PLAY check и Self record/playback check OK NG Part Replacement and repairing

The error occurs by other cause. Perform the mechanism check of the sled and spindle system, etc.

OWH is replaced ?

YES

NO

Either OP, IC171, IC101, or IC121 is replaced ?

YES Initial setting of adjustment value NO

OP or IC171 is replaced ? YES Recording the IOP information (IOP value that is recorded in OP)

NO

Either IC171 or D101 is replaced ?

YES Temperature compensation offset adjustment

NO

и Traverse adjustment и Focus bias adjustment и Error rate adjustment и Auto gain adjustment

End adjustment

27

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-260B)
As the laser diode in the optical pick-up is easily damaged by static electricity, solder the laser tap on the flexible board of the optical pick-up when using it. Before disconnecting the connector, disorder the laser tap. Be careful not to remove the solder before connecting the connector. Also take adequate measures to prevent damage by static electricity. Handle the flexible board with care as it breaks easily.
Pick-up Flexible board

2) Set the test mode when performing the adjustments. After completing the adjustments, exit the test mode. Perform the adjustments and checks in "Group S" of the test mode. 3) Perform the necessary adjustments only in the order given. 4) Use the following tools and measuring devices. и Check disc (MD) TDYS-1 (Parts No.: 4-963-646-01) и Test disc (MDW-74/GA-1) (Parts No.: 4-229-747-01) и Laser power meter LPM-8001 (Parts No.: J-2501-046-A) Or и MD laser power meter 8010S (Parts No.: J-2501-145-A) (Note) и Oscilloscope (Measure after perform the CAL of the probe.) и Digital voltmeter и Thermometer и Tool for checking waveform of BD board (Parts No.: J-2501149-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 When checking the waveform, the check can be performed without soldering by using the tool for checking waveform of BD board. (Refer to the Service note (page 7).) 7) Use the tool disc that is free from finger print and dust as they can affect result of adjustment. Note: Laser power meter When the laser power check and adjustment of the electrical adjustment are performed, using the new MD laser power meter 8010S (J-2501-145-A) instead of the former laser power meter is recommended. The procedure of installing the laser meter sensor to the objective lens of pick-up is greatly simplified.

Laser tap Optical pick-up flexible board

5-4. Precautions for Adjustments
1) When replacing the following parts, perform the adjustments and checks with !! in the order shown in the following table. BD board Optical IC101, pick-up IC171 D101 IC192 IC121 1. Initial setting of adjustment value 2. Recording IOP information (the value that is written in pick-up) 3. Temperature compensation offset adjustment 4. Laser power adjustment 5. Traverse adjustment 6. Focus bias adjustment 7. Error rate adjustment 8. Auto gain output level adjustment a a О a О

a

a

О

О

О

О a a a a a

a

a О О О О О

О a a a a a

О a О О О О

a a a a a

28

5-5. Creating Continuos Recorded Disc
и This disc is used in focus bias adjustment and error rate check. The following describes how to create a continuos recording disc. 1. Load a disc (blank disc) commercially available. the disc is loaded by pushing the tray. 2. Rotate the lAMSL knob and display "CREC 1MODE" (C35). 3. Press the YES button to display "CMEC 1MID". "CREC1 (0300)" is displayed for a moment and recording starts. 4. Complete recording within 5 minutes. 5. Press the MENU/NO button to stop recording. 6. Press the A button to eject the disc. The above has been how to create a continuos recording data for the focus bias adjustment and error rate check. Note: и Be careful not to apply vibration during continuos recording.

5-6-2. Laser Power Check Before check: и Refer to Section 1 "Service note" How to open the disc tray when power switch is turned off, and laser power check. и Check the IOP value of optical pick-up. (Refer to Section 5-8 "Recording and displaying the IOP information".) Connection:
Laser power meter

Optical pick-up objective lens
Digital voltmeter BD board

5-6. Check before Repairing
This check aims at locating the approximate position of cause of trouble before starting to replace parts using specifications. For detailed information, refer to [Checks before Part Replacement and Adjustment] of Service note. 5-6-1. Temperature Compensation Offset Check Before adjustment, set the internal temperature and the ambient temperature are between 22 and 28 ░C. Checking procedure: 1. Rotate the lAMSL knob to display "TEMP CHECK" (C12). 2. Press the YES button. 3. It is OK when "[email protected]@(##)[OK" appears. It is NG when "[email protected]@(##)[NG" appears. (@@ is the current value. ## is the value that is written in the non-volatile memory.)

CN110 5-pin (I+3V) CN110 4-pin (IOP)

Checking procedure: 1. Insert the laser power meter from the disc inlet and set it on the objective lens of the optical pick-up. (When it cannot be set properly, press the m button and M button to move the optical pick-up.) Connect the digital voltmeter to CN110 5-pin (I+3V) and the CN110 4-pin (IOP). 2. Rotate the lAMSL knob to display "LDPWR CHECK" (C13). 3. Press the YES button once to display "LD 0.9mW $ ". Confirm that the reading of the laser power meter is 0.84 to 0.92 mW. ". 4. Press the YES button once again to display "LD 7.0mW $ Confirm that the readings of the laser power meter and digital bolt meter satisfy the specified value. 5. Then press the YES button once again to display "LD 6.2mW $ ". Specification: Laser power meter reading: 7.0 ▒ 0.2 mW Digital bolt meter reading: Optical pick-up displayed value ▒ 10 %
(Optical pick-up label) (For the checking procedure of this value, refer to Section 5-8 "Recording and displaying the IOP information".)

KMS

260B 24391 H0528

IOP = 52.8 mA in this case IOP (mA) = digital bolt meter reading (mV)/1 (W)

6. Press the MENU/NO button to display "LDPWR CHECK" (C13) and stop laser emission. (The MENU/NO button is effective at all times to stop the laser emission.) Note 1 : After step 4, the display of "LD 0.7mW$ " "LD 6.2mW$ ", "LD Wp $ " is switched every time when pressing the YES button. Operation is not necessary for these displays.

29

5-6-3. Traverse Check Note 1 : If the recorded disc is used for this adjustment, the data is deleted. Note 2 : If the traverse waveform is not clear, connect the oscilloscope as shown below so that it can be seen more clearly.
Oscilloscope (DC range)

8. Observe the waveform of the oscilloscope and confirm it that is within the specified value. Do not rotate the lAMSL knob at this time. (Write power traverse check)
(Traverse Waveform) A

VC
BD board
330k

B Specification: Offset value 10% or less Offset value % = AB 2(A+B) О 100

CN110 3-pin (TEO) CN110 1-pin (VC)
10pF

Connection:
Oscilloscope (DC range) BD board CN110 3-pin (TEO) CN110 1-pin (VC)

V : 0.5V/div H : 10ms/div

9. Press the YES button to display "EFB = MO-P". The optical pick-up moves to the internal circumference of the pit area automatically and servo is imposed. 10. Observe the waveform of the oscilloscope and confirm that it is within the specified value. Do not rotate the lAMSL knob at this time.
(Traverse Waveform)

Checking procedure: 1. Connect the oscilloscope to the CN110 3-pin (TEO) and the CN110 1-pin (VC) of the BD board. 2. Load a recordable disc (any available on the market). (Refer to Note 1.) The disc is loaded by pushing the tray. 3. Press the M button to move the optical pick-up outside the pit. 4. Rotate the lAMSL knob to display "EF MO CHECK" (C14). 5. Press the YES button to display "EFB = MO-R". (Laser power READ power, focus servo ON, tracking servo OFF, and spindle (S) servo ON are set) 6. Observe the waveform of the oscilloscope and confirm it is within the specified value. Do not rotate the lAMSL knob at that time. (Read power traverse check)
(Traverse Waveform) A

A

VC
B Specification: Offset value 10% or less Offset value % = AB 2(A+B) О 100

11. Press the YES button to display "EF MO CHECK" (C14). The disc st