CDP-CE105 - Sony Audio Service Manual (repair manual). Page 10

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[BD BOARD] (Conductor Side)

RF

FOK

RV101

RV103

IC101

IC102

TEI

FEI

TEO

RV102

VC

GND

PCK

FEO

TP(TEO)

TP(VC)

oscilloscope

BD board

Procedure :
1. Connect test point TP (ADJ) on DISPLAY board to Ground with

a lead wire.

2. Connect oscilloscope to test point TP (TEO).
3. Turn Power switch on to set the ADJ mode.
4. Put disc (YEDS-18) in and playback.
5. Press the “16” button. (The tracking servo and the sledding servo

are turn off)

6. Confirm that the oscilloscope waveform is symmetrical on the

top and bottom in relation to 0Vdc, and check this level.

Traverse waveform

0V

B

A

level : 300 ± 100 mVp-p

Specified level : • 

             X

 100=less than ± 7%

• A+B=300 ± 100 mVp-p

7. Remove the lead wire connected in step 1.

This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment.
Please note that it should be fixed to mechanical center position when
you moved and do not know original position.

A-B

2(A+B)

IC104

IC401

R404

TP

ADJ

R405

TP

AFJ

Note : Use the widely use remote commander with 20 keys for this

check.

[DISPLAY BOARD] (Conductor Side)