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– 80 –

REC

Analog REC

Digital REC

Double speed REC

PLAY

PLAY (1kHz 0dB)

PLAY

TP1201

(EFMMON)    

TP1201

(EFMMON)    

TP1530

(CDLRCK)   

TP1515

(DIGIN)   

TP1533

(CDDATA)   

TP1524

(L OUT)   

TP1526

(R OUT)   

TP1531

(CDBCK)   

TP1207

(TEMON)

TP1207

(TEMON)

TP1121

   (T+)

TP1421

   (CIN)

TP1121

   (T+)

TP1421

   (CIN)

72

IC1201

   (DFCK)

72

IC1201

   (DFCK)

TP1300

   (REC HEAD)       

TP1302

   (EFMO)       

TP1105

   (LDVAL)       

TP1113

         (R/P)       

71

IC1201

   (BCLK) 

3

IC1202

       (WE) 

17

IC1202

       (CAS) 

1

IC1202

       (I/01) 

6

IC1202

       (A0) 

70

IC1201

   (LRCK) 

74

IC1201

   (DADATA) 

71

IC1201

   (BCLK) 

70

IC1201

   (LRCK) 

73

IC1201

   (ADDATA) 

PLAY (Low reflection disc)

PLAY (High reflection disc)

14

28

29

30

31

18

32

20

21

33

34

35

36

6

16

17

14

6

16

17

18

19

20

21

22

23

24

25

26

27

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When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean
the objective lens, and check the playback operation. When this section does not operate even after the above step is taken, check
the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup
lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn off the power, and wipe the lens softly using a cleaning paper moistened with commercially available cleaning solution so
as not to damage it.
Be careful not to touch the lens with bare hands.

Dust gradually accumulates on the objective lens during use, and it may degrade performance.  To avoid this problem, use a
cleaning disc designed for CD optical pickup lenses.

Parts code

1.

CD optical pickup Lens cleaner disc

UDSKA0004AFZZ

HOW TO USE

CAUTION

Cleaning Fluid

Cleaner disc

Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the 

brush on the CD cleaner disc which has the mark next to it.

Place the CD cleaner disc onto the CD disc tray with the brush side down, then 

press the play button.

You will hear music for about 20 seconds and the CD player will automatically stop. 

If it continuous to turn, press the stop button.

1.

2.

3.

The CD lens cleaner should be effective for 30-50 operations, however if the 

brushes become worn out earlier then please the cleaner disc.

If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft 

cloth.

Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the 

event of this happening then drink and / or rinse with clean water and seek medical 

advice.

The CD cleaner disc must not be used on car CD players or on computer CD-ROM 

drives.

All rights reserved. Unauthorised duplicating, broadcasting and renting this product 

is prohibited by law.

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If dusts and foreign materials are accumulated on the pickup lens, playback sounds can be skipped or the TOC (Table of Contents)
can't be displayed. Clean the object lens and check the playback. When lens are dirty, do the following.

Turn off the power and wipe lens softly with a cleaning paper and a little cleaning solution so as not to damage it.
Do not touch lens with bare hands.

If the MD unit doesn't start after cleaning the pickup objects lens, check it as follows.

Check as stated in item "disc Loading is not normal".

No

Is disc loading normal ?

Yes

No

Check as stated in item "Playback state cannot be set".

Is playback state set when the MD PLAY/PAUSE button is
pressed ?

Is audio output normal ?

Check as stated in item "Audio playback circuit".

No

Is record and playback operations normal ?

Yes

Check as stated in item "Record and playback operations".

No

Yes

Is it impossible to set both high reflection disc and low
reflection disc to playback state ?

No

Check as stated in item "TEST mode check".

Yes

Only the high reflection disc cannot be played back.

Yes

Is 2.7V to 2.8V applied to the pin 93 of IC1401 with the high
reflection disc inserted ?

Only the low reflection disc cannot be played back.

Is 2.5V to 2.6V (record enabled) or 2.7V to 2.8V (record disabled)
applied to the pin 93 of IC1401 with the low reflection disc inserted ?

No

Yes

Yes

After re adjustment check as stated in item "Normal playback".

Check loading motor PWB, and CW1931.

No

Yes

No

Yes

No

Is audio output waveform observed on the pins 15 and 17 of
CN1501 ?

Check connection between IC1701 and CN1501.

No

Check the main PWB.

Yes

When sound is not output although the playback time display advances during playback in the normal mode.

Is audio output waveform observed on the pins 24 and 26 of
IC1701 ?

Check the pins 70, 71, 72 and 74 of IC1201, and the pins 12, 16,
17, and 19 of IC1701.

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Is disc loaded when it is inserted ?

No

Yes

No

Check IC1401.

No

Check CN1401, CW1931 and SW1932.

Yes

No

Check CN1401, CW1931 and IC1601.

Yes

Check M903

No

Yes

Yes

Is change observed on the pin 19 or 20 of IC1601 ?

Is change observed on the pin 12 or 13 of IC1601 ?

Is ejection performed when the MD eject button is pressed ?

Yes

Disc retracts soon after completion of disc ejection.

Yes

Check SW1932.

Is the pin 9 of CN1401 set to H state ?

Yes

No

Check the main PWB and CN1501.

No

Check the power PWB, main PWB, and
CN1501.

Is pulse input in the pin 22 of CN1501 when reset power
supply is turned on ?

Is +5V to +6V applied to the pins 6 and 7 of CN1501 ?

Yes

No

Check IC1201.

No

Check the periphery of Q1804 and
IC1401.

Is pulse of 8.4672MHz applied to the pin 15 of IC1401 ?

Is +3.2V applied to the pin 62 of IC1401 ?

Yes

No

Check IC1401.

Is pulse output from the pin 34 of IC1401 ?

Yes

Yes