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– 19 –

NO DISC FOCUS SEARCH

1

2

3

FOO

FO+

FO-

IC802 66Pin

IC803 20Pin

IC803 21Pin

1

2

3

FOCUS SEARCH    TOC IL

1

2

3

SEL

FEI

TEI

IC802 74Pin

IC802 62Pin

IC802 64Pin

4

5

6

5

7

8

STOP    PLAY

1

2

3

FEI

SBAD

RFO

IC802 62Pin

IC802 63Pin

IC801 22Pin

STOP    PLAY

1

2

3

FEI

RFGO

RFRP

IC802 62Pin

IC801 19Pin

IC801 17Pin

5

9

10

STOP    PLAY

1

2

3

TEI

TRO

SBAD

IC802 64Pin

IC802 67Pin

IC802 63Pin

6

11

7

12

13

14

STOP    PLAY

1

2

3

TMAX

SBOX

DMO

IC802 50Pin

IC802 45Pin

IC802 72Pin

STOP    PLAY

1

2

3

TEI

TRO

FMO

IC802 64Pin

IC802 67Pin

IC802 71Pin

6

11

15

6

11

15

CUE

1

2

3

TEI

TRO

FMO

IC802 64Pin

IC802 67Pin

IC802 71Pin

REVIEW

1

2

3

TEI

TRO

FMO

IC802 64Pin

IC802 67Pin

IC802 71Pin

6

11

15

16

17

TCD-782 TNO-02 PLAYBACK

1

2

LO

RO

IC802 86Pin

IC802 82Pin

– 20 –

1. 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.

2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.
3. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop button.

The CD lens cleaner should be effective for 30 - 50 operations, however if the brushes become worn out earlier then please
replace 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 player or on computer CD ROM drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting product is prohibited by law.

Cleaning Disc
PARTS CODE:
    UDSKA0004AFZZ

Cleaner Liquid

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.

– 21 –

Yes

No

Check the laser come on when pattern cut between pin 8 (SEL) of
IC801 and pin 74 (SEL) of IC802.

Yes

No

Check the peripheral parts of IC801 and Q801. If it is normal, the
optical pickup is faulty.

Check BI801/CNS801. If it is normal, the optical pickup is
faulty.

Is approx. 1.8V applied to the collector of Q801.

Is +5V applied to the emitter of Q204 ?

Is +5V applied to the collector of Q204 ?

Yes

No

No

Check the PWB pattern of Q204.

Check the peripheral parts of IC803 and Q204.

Is +5V applied to the pin 75 (VDD) of IC802 ?

Is +5V applied to the pin 1 (VCC) of IC801 ?

Yes

No

No

Check the PWB pattern between collector of Q204 and pin 75 of
IC802.

Check the PWB pattern between collector of Q204 and pin 1 of
IC801.

Yes

Yes

Is +0V applied to the pin 74 (SEL) of IC802 ?

Check the pickup-in switch (SW702) position.

Check the Focus system.

Yes

The CD operating keys don't work.

Check the  power supply, 16.93 MHz clock, and reset terminal.

Yes

Yes

– 22 –

Is +8.1V applied to the pins 21 and 22 (VCC) of IC803 ?

Is sawtooh wave output to the pin 66 (FOO) of IC802 ?

IC802 is faulty.

No

Yes

Yes

Is sawtooth wave obtained between pins 17 and 18 of IC803 ?

No

Check the PWB pattern of IC803.

Check the PWB pattern of IC803.

No

Is sawtooth wave obtained between pins 3 and 4 of BI801/
CNS801 ?  (as shown above)

Yes

Check the PWB pattern between BI801/CNS801 and IC803.

No

BI801/CNS801 connection failure or optical pickup failure.

Yes

1.5~2.5sec

1.5~2.5sec

Does the optical pickup move up and down when the disc is
removed ?

Is the following waveform output at the pin 62 (FEI) of IC802
when the disc is set ?

Is the waveform shown above input at the pin 63 (SBAD) of
IC802 ?

Yes

Yes

No

No

The optical pickup is faulty.

Check as stated in item "FOCUS SERVO SAWTOOTH WAVE
FAILURE".

Yes

Check the periphery of IC801 and BI801/CNS801. Is it normal ?

No

Check the pattern between pin 13 of IC801 and pin 63 of IC802.
Check the periphery of IC801 and BI801/CNS801.

IC801 is faulty.

Yes

pin 62

pin 86

pin 63

(FEI)

(FOO)

(SBAD)