Sony MXDD-5-C Service manual

MXD-D5C

SERVICE MANUAL

Photo: AEP, UK models

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

CD Section

MD Section

US Model

Canadian Model

AEP Model

UK Model

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM53G-21BD53 Base Unit Name BU-21BD53 Optical Pick-up Name OP Assy (A-MAX.2) Model Name Using Similar Mechanism NEW MD Mechanism Type MDM-7X2A Optical Pick-up Name KMS-262A/J1N

CD player section

System Compact Disc digital audio system Laser Semiconductor laser ( λ = 780 nm)

Emission duration: continuous

Laser output Less than 44.6 µW*

* This output is the value measured at

distance of lens surface on the Optical Pick-up Block with

Frequency response 5 to 20,000 Hz ±0.5 dB

Signal-to-noise ratio More than 96 dB

Wow and flutter Below measurable limit

MD deck section

System MiniDisc digital audio system

Disc MiniDisc

Laser Semiconductor laser (

Emission duration: continuous

Laser output Less than 44.6 µW*

* This output is the value measured at

distance of lens surface on the Optical Pick-up Block with

Laser diode properties Material: GaAlAs

Revolutions (CLV) 800 rpm to 1,800 rpm

Error correction Advanced Cross Interleave Reed

Solomon Code (ACIRC)

Sampling frequency 44.1 kHz

Coding Adaptive Transform Acoustic Coding

(ATRAC)/ATRAC 3

Modulation system EFM (Eight-to-Fourteen Modulation)

Number of channels 2 stereo channels

200 mm from the objective

7 mm aperture.

λ = 780 nm)

200 mm from the objective

7 mm aperture.

SPECIFICATIONS

Frequency response 5 to 20,000 Hz ±0.5

Signal-to-noise ratio Over 96 dB during playback

Wow and flutter Below measurable limit

Inputs

ANALOG IN

DIGITAL OPTICAL IN

Outputs

PHONES

ANALOG OUT

COMPACT DISC MINIDISC DECK

Jack type Input

Phono jacks

Square optical connector jack

Jack type Rated output Load impedance

Stereo phone jack

Phono jacks 2 Vrms

impedance

47 kilohms 500 mVrms 125 mVrms

Optical wave length: 660 nm

10 mW 32 ohms

(at 50 kilohms)

Rated input

– Continued on next page –

Minimum input

——

Over 10

kilohms

General

Power requirements

Where purchased Power requirements

U.S.A. and Canada 120 V AC, 60 Hz

Europe 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

Supplied accessories

• Audio connecting cords (2)

• Remote commander (remote) (1)

• Sony R6 (size-AA) batteries (2)

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 Cause/Remedy

C11/Protected The inserted MD is record-protected.

C12/Cannot Copy An attempt was made to play a disc that is not compatible with this deck (CD-

C13/Rec Error The recording was not made properly.

C13/Read Error The deck could not read the TOC of the MD properly.

C14/Toc Error The deck could not read the TOC of the MD properly.

C41/Cannot Copy The digitally dubbed material cannot be recorded digitally.

C71/Din Unlock A moment’s lighting is due to the signals of the digital program being recorded.

E0001/MEMORY NG There is an error in the internal data that the deck needs in order to operate.

E0101/LASER NG There ia a problem with the optical pick-up.

, Take out the MD, and close the record-protect tab.

ROM, MD data disc, etc.).

, Replace the disc.

, 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.

, Eject the disc, then insert it again.

, Insert another disc. , If possible, erase all tracks on the MD using the All Erase Function.

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.

, Consult your nearest Sony dealer.

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 [ AMS ] (MD) knob and x (MD) button to display “ <0> To Normal”.

3. Turn the [ AMS ] (MD) knob and when “ <5> MD Test” is displayed, press the [ AMS ] (MD) knob.

4. Turn the [ AMS ] (MD) knob and when “[Service]” is displayed, press the [YES] button.

5. Turn the [ AMS ] (MD) knob to display “Err Display”.

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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 [ AMS ] (MD) knob.

8. Press the [ AMS ] (MD) knob to display or execute the contents selected.

9. Press the [ AMS ] (MD) knob another time returns to step 6.

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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 [ AMS ] (MD) knob and when “<8> Initial” displayed, press the [ AMS ] (MD)

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knob.

ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS

Selecting the Test Mode

Display Details of History

op rec tm 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.

op play tm 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.

spdl rp tm 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.

retry err 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.

total err Displays the total number of errors.

Displayed as “total ss”. The number of errors is displayed in hexadecimal digits from 00 to FF.

err history Displays the 10 latest errors.

Displayed as “0s ErrCd@@”. s indicates the history number. The smaller the number, the more recent is the error. (00 is the latest). @@ indicates the error code. Refer to the following table for the details. The error history can be switched by turning the (MD) knob.

retry adrs 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 [ AMS ] knob.

er refresh Mode to clear the error history and retry address history.

[Operating method]

1) Press

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.

op change Mode to c lear 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

2) The display will change to “op change?”, and then press [YES] button. The operation is over if “Complete!” is displayed.

spdl change 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

2) The display will change to “spdl change?”, and then press [YES] button. The operation is over if “Complete!” is displayed.

[ AMS ] (MD) knob when “er refresh” is displayed.

[ AMS ] (MD) knob when “op change” is displayed.

[ AMS ] (MD) knob when “spdl change” is displayed.

[ AMS ]

Table of Error Codes

TABLE OF CONTENTS

Error Code Details of Error

10 Loading failed 12 Loading switch combination is illegal 20 Head of PTOC could not be read within the

specified time

21 Head of PTOC could be read but its content is

erroneous

22 Access to UTOC could not be made within the

specified time

23 UTOC could be not read within the specified

3time 24 Content of UTOC is erroneous 30 Playing could not start 31 Content of sector is erroneous 40 Cause of retry occurred during normal recording 41 D-RAM overflowed and retry was executed 42 Retry was executed during the writing to TOC 43 S.F editing was interrupted by retry 50 Address could not be read except in access

processing 51 Focusing failed and it is out of control 60 Unlock retry

SELF-DIAGNOSIS FUNCTION..................................... 2

1. SERVICING NOTES ............................................... 6

2. GENERAL ................................................................... 16

3. DISASSEMBLY ......................................................... 17

4. ASSEMBLY .......................................................... 26

5. TEST MODE.............................................................. 29

6. ELECTRICAL ADJUSTMENTS

MD Section ..................................................................... 35

CD Section ...................................................................... 46

7. DIAGRAMS

7-1. Block Diagram – MD SERVO Section – ....................... 48

7-2. Block Diagram – MAIN Section – ................................. 49

7-3. Block Diagram

– DISPLAY/POWER SUPPLY Section – ..................... 50

7-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 51

7-5. Pr inted Wiring Board – BD (CD) Board – ..................... 52

7-6. Schematic Diagram – BD (CD) Board – ........................ 53

7-7. Schematic Diagram – BD (MD) Board (1/2) – .............. 54

7-8. Schematic Diagram – BD (MD) Board (2/2) – .............. 55

7-9. Pr inted Wiring Board – BD (MD) Board – .................... 56

7-10. Printed Wiring Board

– MAIN Board (Component Side) – .............................. 58

7-11. Printed Wiring Board

– MAIN Board (Conductor Side) – ................................ 59

7-12. Schematic Diagram – MAIN Board (1/4) – ................... 60

7-13. Schematic Diagram – MAIN Board (2/4) – ................... 61

7-14. Schematic Diagram – MAIN Board (3/4) – ................... 62

7-15. Schematic Diagram – MAIN Board (4/4) – ................... 63

7-16. Printed Wiring Board

– AUDIO Board (Component Side) – ............................ 64

7-17. Printed Wiring Board

– AUDIO Board (Conductor Side) – .............................. 65

7-18. Schematic Dia gram – AUDIO Board – .......................... 66

7-19. Printed Wiring Boards – CDM Section – ...................... 68

7-20. Schematic Diagram – CDM Section – .......................... 69

7-21. Printed Wiring Boards – PANEL Section – .................. 70

7-22. Schematic Dia gram – PANEL Section –....................... 71

7-23. Printed Wiring Board – LED Board – ........................... 72

7-24. Schematic Diagram – LED Board – .............................. 73

7-25. IC Pin Function Description ........................................... 77

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.

8. EXPLODED VIEWS................................................ 89

9. ELECTRICAL PARTS LIST ............................... 96

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

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.

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.

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. Follo w the manufacturers’ instructions to use these instruments.

2. A battery-operated A C 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

0.15 µF

1.5 k

Ω

voltmete (0.75 V)

ADVARSEL!

Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.

Udskiftning må kun ske med batteri

af samme fabrikat og type.

Levér det brugte batteri tilbage til leverandøren.

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. Använd samma batterityp eller en likvärdig typ som rekommenderas av apparattillverkaren. Kassera använt batteri enligt gällande föreskrifter.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu. V aihda paristo ainoastaan laitev almistajan suosittelemaan tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.

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.

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.

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.

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

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 objectiv e 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.

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.

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)

(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.

MODEL IDENTIFICATION

— BACK PANEL —

Model Part No.

US model 4-228-754-1s Canadian model 4-228-754-2s AEP, UK models 4-228-754-3s

Part No.

I+3V IOP GND TE FE VC RF

I+3V

IOP

GND

FE VC RF

for

MDM-7X2A

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. T he names of terminals and the checking items to be performed are shown as follows.

GND : Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the deterioration of the optical pick-up laser) TE : Tracking error signal (Traverse adjustment) VC : Reference level for checking the signal RF : RF signal (Check jitter) FE : Focus error signal

I+3V

GND

CN105

IOP

IOP DA TA RECORDING AND DISPLA Y WHEN OPTICAL PICK-UP AND NON-VOLA TILE MEMOR Y (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 [ AMS ] (MD) knob and x (MD) button to display “ <0> To Normal”.

3. Turn the [ AMS ] (MD) knob and when “ <5> MD Test” is displayed, press the [ AMS ] (MD) knob.

4. Turn the [ AMS ] (MD) knob to display “[Service]”, and press the [YES] button.

5. Turn the [ AMS ] (MD) knob to display “Iop Write” (C05), and press the [YES] button.

6. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.

7. Input the IOP value written on the optical pick-up label. To select the number: Turn the [ AMS ] (MD) knob. To select the digit : Press the [ AMS ] (MD) knob.

8. When the [YES] button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).

9. As the adjustment results are recorded for the 6 value. Leave it as it is and press the [YES] button.

10. “Complete!” will be displayed momentarily. The v alue will be r ecorded in the non-v olatile 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 [ AMS ] (MD) knob and “<8> Initial” displayed, press the [ AMS ] (MD) knob.

Display Procedure:

1. Press the x (CD), x (MD) and [YES] buttons at the same time.

2. Press the [ AMS ] (MD) knob and x (MD) button to display “ <0> To Normal”.

3. Turn the [ AMS ] (MD) knob and when “ <5> MD Test” is displayed, press the [ AMS ] (MD) knob.

4. Turn the [ AMS ] (MD) knob to display “[Service]”, and press the [YES] button.

5. Turn the [ AMS ] (MD) knob to display “Iop Read” (C26).

6. “@@.@/##.#” is displayed and the recorded contents are displayed. @@.@: indicates the IOP value on the optical pick-up label. ##.# : indicates the IOP value after adjustment

7. To end, press the

8. Press the I/1 button to display “<5> MD Test”.

9. To turn the power OFF, turn the [ AMS ] (MD) knob and “<8> Initial” displayed, press the [ AMS ] (MD) knob.

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[ AMS ] (MD) knob or [MENU/NO] button to display “Iop Read” (C26).

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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”.

Laser power check (6-2 : See page 38)

Traverse check (6-6 : See page 39)

Focus bias check (6-7 : See page 40)

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

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

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

Criteria for Determination (Unsatisfactory if specified value is not satisfied)

• 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 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

• Unsatisfactory if displayed as T=@@ (##) [NG” NG (@@, ## are both arbitrary numbers)

• Clean the optical pick-up

• Adjust again

• Replace the optical pick-up

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

• Check for disconnection of the circuits around

D101 (BD (MD) board)

• Check the signals around IC101, IC151, CN102, CN103 (BD (MD) board)

Measure if unsatisfactory:

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.

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 [ AMS ] (MD) knob and x (MD) button to display “ <0> To Normal”.

3. At this time, turn the [ AMS ] (MD) knob can select all modes. For the contents of mode, see the following table.

4. To e xit from the service mode, turn [ AMS ] (MD) to display “<0> T o Normal”, then press the [ AMS ] (MD) knob.

Contents of test mode

No. Display Function

0 <0> To Normal Exit from test mode 1 <1> Ver sion Microcomputer Version display 2 <2> FLD FL display test/LED display test 3 <3> Key, Jog Key/Jog input test 4 <4> CD Test CD all sorts test 5 0> COMMAND Command transfer menu 6 1> ERROR C1, C2 error display 7 2> SPEED X1 Disc speed selection 8 3> ISRC ISRC display

9 4> CHECK8 Check 8 cm display 10 5> AUTO G Auto gain display 11 6> HENSHIN Decentiering display 12 7> PORT Port selection 13 8> AMS ON AMS display 14 9> TRK ON TRK ON/OFF display 15 <5> MD Test MD all sorts test 16 <6> Retry & TOC MD TOC off & Retry test 17 <7> PC LINK PC connection check 18 <8> Initial All reset 19 <9> MD Update Software update 20 <10> Sircs Sircs code display 21 <11> Dump Microcomputer Dump mode 22 <12> CD Aging CD Aging 23 <13> Rep 5 off Cancel restriction of repeat five times 24 <14> KeyBoard Keyboard check 25 <15> Special Command, Sircs test 26 <16> CD Ship Shipment mode

lLlL

Microcomputer Ver sion Display

Procedure:

1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<1> V ersion”, and press the [ AMS ] (MD).

2. The CD microcomputer version is displayed, and then press the

[ AMS ] (MD) knob, and the MD microcomputer version

and the display microcomputer version will be displayed.

3. To exit from the mode, press the

[ AMS ] (MD) knob.

FL Display Test/LED display test

Procedure:

1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<2> FLD”, and press the [ AMS ] (MD).

2. All segments of fluorescent display tube turn on, and all LEDs turn off. Successive pr essing the [ AMS ] (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 [ AMS ] (MD) knob causes the fluorescent display tube to be another grid display. The [DISC] b utton

LED becomes amber, and all others turn on.

4. To exit from the mode, press the [ AMS ] (MD) knob.

Key/Jog Input Test

Procedure:

1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<3> Key, Jog”, and press the [ AMS ] (MD).

2. Turning the [ AMS ] (MD) knob moves the R-CH level meter, and turning the [ AMS ] (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 [ AMS ] (MD) knob.

Software Reset

Procedure:

1. Enter the service mode, then turn [ AMS ] (MD) knob to display “<8> Initial”, and press the [ AMS ] (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

[ AMS ] (MD) knob to display “<16> CD Ship”, and press the [ AMS ] (MD).

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2. “DISC 1” is chucked by the microcomputer control, and the power is turned off with the BD shutter left open.

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 [ AMS ] (MD) knob

to display “All Erase?”.

3. Press the [YES] button. (Or press the [ AMS ] (MD) knob)

4. “All Erase?” is displayed on the fluorescent indicator tube.

5. Press the [YES] button to display “Complete!”. (The [ AMS ] (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 [ AMS ] (MD) knob and x (MD) button to display “<0> To Normal”.

8. Turn [ AMS ] (MD) knob to display “<6> Retry & TOC”, and press the [ AMS ] (MD) knob.

9. Press the [REC ] 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. T o release the test mode, press the I/1 button, and turn OFF the power . W hen “TOC” disappears, disconnect the power plug from the

outlet.

lLlL

Fig. 1 Reading the Test Mode Display

(During recording and stop)

RTs@@c##e

Fluorescent indicator tube display

@@ : Cause of retry ## : Number of retries

: Number of retry errors

Reading the Retry Cause Display

Higher Bits

Hexadecimal

Bit

Binary

84218421

b7 b6 b5 b4 b3 b2 b1 b0

00000001 00000010

00000100 00001000 00010000 00100000 01000000 10000000

Lower Bits

Hexa-

decimal

04 08 10 20 40 80

Cause of Retry

shock

ader5 Discontinuous address

DIN unlock FCS incorrect IVR rec error CLV unlock Access fault

Fig. 2 Reading the Test Mode Display

(During playback)

@@ ###

Fluorescent indicator tube display

@@ : Parts No. (name of area named on TOC) ## : Cluster

: Sector

$$ : Track mode (Track information such as copy-

right information of each part)

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

continuously When ADIP address is not continuous When DIN unlock is detected When not in focus When ABCD signal le v el e xceeds the specified range When CLV is unlocked When access operation is not performed normally

 

Address



Occurring conditions

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”.

Reading the Retry Cause Display

Higher Bits

Hexadecimal

Bit

Binary

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”.

84218421

b7 b6 b5 b4 b3 b2 b1 b0

00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000

Lower Bits

Hexa-

decimal

01 02 04 08 10 20 40 80

When 0

Emphasis OFF Monaural

This is 2-bit display. Normally 01. 01:Normal audio. Others:Invalid

Audio (Normal) Original Copyright Write prohibited

Details

When 1

Emphasis ON Stereo

Invalid Digital copy No copyright Write allowed

Hexadecimal t Binary Conversion Table

Hexadecimal Binary Hexadecimal Binary

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

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

4. Rotating [ AMS ] (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 1kHz/0dB/L&R 22 1kHz/–90dB/L&R 2 20Hz/0dB/L&R 23 Infinity Zero w/o emphasis//L&R 3 40Hz/0dB/L&R 24 Infinity Zero with emphasis//L&R 4 100Hz/0dB/L&R 25 400Hz+7kHz(4:1)/0dB/L&R 5 200Hz/0dB/L&R 26 400Hz+7kHz(4:1)/–10dB/L&R 6 500Hz/0dB/L&R 27 19kHz+20kHz(1:1)/0dB/L&R 7 1kHz/0dB/L&R 28 19kHz+20kHz(1:1)/–10dB/L&R 8 5kHz/0dB/L&R 29 100Hz/0dB/L*

9 7kHz/0dB/L&R 30 1kHz/0dB/L* 10 10kHz/0dB/L&R 31 10kHz/0dB/L* 11 16kHz/0dB/L&R 32 20kHz/0dB/L* 12 18kHz/0dB/L&R 33 100Hz/0dB/R* 13 20kHz/0dB/L&R 34 1kHz/0dB/R* 14 1kHz/0dB/L&R 35 10kHz/0dB/R* 15 1kHz/–1dB/L&R 36 20kHz/0dB/R* 16 1kHz/–3dB/L&R 37 100Hz Squer Wave//L&R 17 1kHz/–6dB/L&R 38 1kHz Squer Wave//L&R 18 1kHz/–10dB/L&R 39 1kHz w/emphasis/–0.37dB/L&R 19 1kHz/–20dB/L&R 40 5kHz w/emphasis/–4.53dB/L&R 20 1kHz/–60dB/L&R 41 16kHz w/emphasis/–9.04dB/L&R 21 1kHz/–80dB/L&R

0DB

Displayed Contents

TRACK

No.

Displayed Contents

Note: The contents of Track No. 1 to 41 are the same as those of the current TEST DISC-their titles are displayed.

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

Recorded contents

! ” #$%&´ (21h to 27h)1kHz 0dB L&R ( ) +,– . / (28h to 2Fh)

01234567 (30h to 37h) 8 9 : ; < = > ? (38h to 3Fh)

@A B CD E F G (40h to 47h)

H I J K L MN O (48h to 4Fh) P Q R S T U V W (50h to 57h) XYZ [¥ ] ^ _ (58h to 5Fh)

a b c d e f g (60h to 67h)

′

h i j k l m n o (68h to 6Fh) p q r s t u v w (70h to 77h) xyz{I}

(78h to 7Fh)

i¢£¤¥ § (A0h to A7h) 8859-1

C ª

•±23

†

º ¿ (B8h to BFh)

–

µ ¶• (B0h to B7h)

′

14123

(A8h to AFh)

АБВГДЕЖЗ (C0h to C7h) ИЙКЛМНОП (C8h to CFh) D СТУФХЦ ШЩЪЫЬY

(D0h to D7h)

ß (D8h to DFh) абвгдежз (E0h to E7h) ийклмноп (E8h to FFh) ∂ стуфхц÷ (F0h to F7h) шщъыьy ÿ (F8h to FFh)

No.66 No.67 to No.99

Display

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

(A0h to A7h) 8859-1 (A8h to AFh) (B0h to B7h)

(B8h to BFh) AAAAAA C (C0h to C7h) EEEEIIII (C8h to CFh) D N OOOOO (D0h to D7h)

O U U UU Y (D8h to DFh)

aaaaaa c (E0h to E7h) eeeeiiii (E8h to EFh) dnooooo (F0h to F7h) ouuuuy y (F8h to FFh)

T All the same T All the same

T All the same

LOCATION OF CONTROLS

• Front View

SECTION 2

GENERAL

1 Remote sensor 2 I/1 (power) switch

STANDBY indicator

3 DISC 1–5 button

DISK 1–5 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

• Rear View

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

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

4 DIGITAL OPTICAL IN jack 5 KEYBOARD jack

• This set can be disassembled in the order shown below.

CASE

(Page 18)

FRONT PANEL ASS’Y

(Page 18)

SECTION 3

DISASSEMBLY

HP BOARD, SW BOARD,

LED BOARD, DISPLAY BOARD

(Page 19)

AUDIO BOARD

(Page 20)

MAIN BOARD,

POWER TRANSFORMER

(TR701)

(Page 20)

CD MECHANISM DECK SECTION (CDM53G-21BD53),

MD MECHANISM DECK SECTION (MDM-7X2A)

OPTICAL PICK-UP (KMS-262A/J1N),

OVER LIGHT HEAD (HR901)

(Page 19)

BD (MD) BOARD

(Page 21)

HOLDER ASS’Y

(Page 21)

GUIDE (L), SLIDER (EJ),

SLIDER, LEVER (HEAD)

(Page 22)

FITTING BASE (GUIDE) ASS’Y,

CHASSIS (MOLD B) SECTION,

CD BASE UNIT (BU-21BD53)

(Page 23)

BRACKET (CHASSIS)

AND MAGNET ASS’Y

(Page 24)

TRAY (SUB)

(Page 24)

STOCKER SECTION

AND SLIDER (SELECTION)

(Page 25)

SPINDLE MOTOR ASS’Y (M101),

SLED MOTOR ASS’Y (M102),

LOADING MOTOR ASS’Y (M103)

(Page 23)

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

CASE

case

two screws

two screw

FRONT PANEL ASS’Y

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

four screws (BVTT3

claw

two screw

connector (CN300)

seven screws (BVTT3

wire (flat type) (19 core)

claw

front panel ass’y

(CN802)

HP BOARD, SW BOARD, LED BOARD, DISPLAY BOARD

)

screw

two nuts

knob (phone) level

(BVTP2.6

two screws (BVTP2.6

HP board

SW board

four screws (BVTP2.6

nine screws (BVTP2.6

LED board

DISPLAY board

ten screws (BVTP2.6

four screws (BVTP2.6

two knob (AMS) ass’ys

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

two screws (BVTT3

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

connector (CN713)

CD mechanism deck section (CDM53G-21BD53)

wire (flat type) (21 core) (CN101)

four screws (BVTTWH M3)

MD mechanism deck section (MDM-7X2A)

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

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

AUDIO BOARD

)

AUDIO board

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

three screw (BV3 × 8)

MAIN BOARD, POWER TRANSFORMER (TR701)

two PC board holders

power transformer

MAIN board

– bottom view –

Remove solders.

screw (BVTT3

four screws (PTTWH3

power transformer (TR701)

five screws

(BVTT3

MAIN board

BD (MD) BOARD

Remove the solder (four portions).

wire (flat type)(23 core)

wire (flat type)

(27 core)

BD (MD) boar

connector

(CN104)

Remove the solder (five portions).

HOLDER ASS’Y

holder ass’y

two screws (BTP2 × 6)

flexible board (CN104)

claw

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

)

slider (EJ)

slider

guide (L)

two screws

(BTP2

lever (CHG)

lever (head)

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

screw (KTP2 × 6)

screw (BTP2 × 6)

optical pick-up (KMS-262A/J1N)

over write head (HR901)

main shaft

screw

(KTP2

screw (BTP2 × 6

base (BU-A)

base (BU-D)

screw

(M1.7, T APPING)

gear (SD)

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

belt (loading)

two screws (PWH1.7

loading motor ass’y (M103)

two screws (PWH1.7

2.5)

spindle motor ass’y (M101)

CD BASE UNIT (BU-21BD53)

three screws (M1.7)

sled motor ass’y (M102)

two cone coil springs

two screws

(BVTP2.6)

CD base unit

(BU-21BD53)

two cone coil spring

two screws

(BVTP2.6)

FITTING BASE (GUIDE) ASS’Y , BRA CKET (CHASSIS) AND MA GNET ASS’Y

)

four screws

(BVTP M2.6)

bracket

(chassis)

fitting base

(guide) ass’y

four screws

(BVTP M2.6)

two connectors

(CN709, 715)

two screws

(BVTP M2.6)

(CN710)

magnet ass’y

two screws

(BVTP M2.6)

connector

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

tray (sub)

pulley (mode

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

Note: In mounting the parts, refer to page 26 - 28.

two screws

(PTPWH M2.6)

stocker

two step

screws

section

pulley (LD)

slider (selection)

washer

compression

spring

three screws

(BVTP M2.6)

chassis (mold B) section

two step screws

gear (eject)

Note: Rotating the pulley (LD), shift the slider (selection) to the left.

SECTION 4

ASSEMBLY

GEARS INSTALLATION

(Page 26)

SLIDER (SELECTION) INSTALLATION

STOCKER SECTION INSTALLATION

CHASSIS (MOLD B) SECTION

INSTALLATION (Page 28)

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

GEARS INSTALLATION

gear (gear B)

portion A

(Page 27)

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

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

gear (U/D slider)

slider (U/D) gear

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

gear (gear A)

gear (gear B)

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

linearly

SLIDER (SELECTION) INSTALLATION

gear (chuking)

two screws (PTPWH M2.6)

rotary encoder

Align with the slot of rotary encoder.

rotary encoder

align marking

washer

compression spring

Insert the slider (selection)

into the portion A.

convex portion of slider (selection)

gear (chuking)

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

portion A

STOCKER SECTION INSTALLATION

two step screws

stocker section

portion A of tray (sub)

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

portion A of tray (sub)

sticking of slider (selection)

two step screws

CHASSIS (MOLD B) SECTION INSTALLATION

three screws (BVTP M2.6)

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

gear (LD deceleration)

portion A

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

portion B of slider (selection)

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 not stop rotating. Therefore, it will be ejected while rotating. Be sure to press the

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 ] 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.

[ EJECT] button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will

[ EJECT] button after pressing the [MENU/NO] button and the rotation of disc is stopped.

Press the [ AMS ] (MD) knob and x (MD) button to display “ < 0 > To Normal”. Turn the [ AMS ] (MD) knob and when “ < 5 > MD Test” is displayed, press the [ AMS ] (MD) knob. When the test mode is set, “[Check]” will be displayed. Turn the [ AMS ] (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 [ AMS ] (MD) knob, [YES] button, and [MENU/NO] button. The functions of these buttons are as follows.

Function name Function

[ AMS ] (MD) knob Select and set sub menu.

[YES] button Proceeds onto the next step. Finalizes input. [MENU/NO] button Returns to previous step. Stops operations.

5. SELECTING THE TEST MODE

There are 26 types of test modes as shown below. The groups can be switched by turning the [ AMS ] (MD) knob. After selecting the group to be used, press the [YES] button. After setting a certain group, turn the [ AMS ] (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.

Display

AUTO CHECK Err Display TEMP ADJUST LDPWR ADJUST 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

No.

Automatic self-diagnosis

C01

Error history display, clear

C02

Temperature compensation offset adjustment

C03

Laser power adjustment

C04

Iop data writing

C05

Writes current Iop value in read nonv olatile memory using microprocessor

C06

Traverse (MO) adjustment

C07

Traverse (CD) adjustment

C08

Focus bias adjustment

C09

Auto gain output level adjustment (MO)

C10

Auto gain output level adjustment (CD)

C11

Temperature compensation offset check

C12

Laser power check

C13

Traverse (MO) check

C14

Traverse (CD) check

C15

Focus bias check

C16

S-curve check

C17

Nonvolatile memory check

C18

Detrack check

C19

Most circumference check

C25

Iop data display

C26

Comparison with initial Iop value written in nonvolatile memory

C27

Initialization of nonvolatile memory for adjustment values

C28

Display of microprocessor version, etc.

C31

Continuous playback mode

C36

Continuous recording mode

C37

Details

Mark

Group

Check Service

• 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 acciden-

tally, press the [MENU/NO] button to release the mode immediately.

+ 76 hidden pages