TC-WE675 - Sony Audio Service Manual (repair manual). Page 10

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This adjustment should be performed when replacing the head assy
or the bias oscillator transformer (T131, T231),(T141, T241).

Setting:
 REC LEVEL  knob : standard recording position (See page 11.)

1. Connect the digital voltmeter to test point TP331 (DECK A) and

TP441 (DECK B).

2. Set DECK A: RV131 (L-CH), RV231 (R-CH) and DECK B:

RV141 (L-CH), RV241 (R-CH) to mechanical center.

3. Press the  H  button to playback.
4. Adjust DECK A: T131 (L-CH), T231 (R-CH) and DECK B:

T141 (L-CH), T241 (R-CH) so that the digital voltmeter r e a d -
ing becomes minimum.

Adjustment Value: Maximum 220 mV

Adjustment Location: MAIN board (See page 14.)

Setting:
 REC LEVEL  knob : standard record position (See page 11.)

Procedure:
1. Set to test mode (See page 11.)
2. Insert a tape into deck B, press the  REC z  button and then

press the  H  button to start recording.

Adjustment level:
The palyback output of 10 kHz level difference against 315 Hz ref-
erence should be ± 0.5 dB.

Adjustment Location: MAIN board (See page 14.)

Setting:
 REC LEVEL  knob : standard record position (See page 11.)

Procedure:
1. Set to test mode (See page 11.)
2. Insert a tspe into deck B, press the  REC z  button and then

press the  H  button to start recording.

3. Record Mode

4. Playback Mode

Ω

Ω

3. Record Mode

Ω

4. Playback Mode
5. Confirm playback the signal recorded in step 2 become adjust-

ment level as follows.
If the selevels do not adjustment level, adjust DECK A: RV131
(L-CH), RV231 (R-CH) and DECK B:  RV141 (L-CH), RV241
(R-CH) to repeat steps 3 and 4.

Ω

Ω

Ω

5. Confirm playback the signal recorded in step 2 become adjust-

ment level as follows.
If the selevels do not adjustment level, adjust the DECK A: RV102
(L-CH), RV202 (R-CH) and DECK B: RV101 (L-CH), RV201
(R-CH) to repeat steps 3 and 4.

LINE OUT level : –23.8 dBs ± 0.5 dB (47.2 to 53.0 mV)

Adjustment Location: MAIN board (See page 14.)