Sony TC-WR665S - Record;Playback Head Azimuth Adjustment; Tape Speed Adjustment; Playback Level Adjustment

3. Playback Mode
test tape
P-4-A100
(10kHz, — 10dB)
oscilloscope
4. Change the reveres playback mode and repeat the steps 1 to 3.
5. After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location : — record/playback head —
reverse side
forward side
adjustment screws
Tape Speed Adjustment
Procedure :
— Forward Playback Mode —
test tape
WS-48B
(3kHz, OdB)
p=
LINE OUT
(High speed adjustment)
1. Set to test mode. (Refer to page 7)
2. Set to FWD playback mode.
3. Keep on pressing the HIGH SPEED DUBBING switch.
4, Adjust RV72 so that the frequency counter reading becomes
6,000 + 20Hz.
5. Release test mode after adjustment is completed.
(Normal speed adjustment)
1. Set to FWD playback mode.
2. Adjust RV71 so that the frequency counter reading becomes
3,000 + 10Hz.
(Pitch control adjustment) (TC-WR565, TC-WR665S)
1. Turn ON the PITCH CONTROL switch.
2. Set RV801 to mechanical center.
3. Set to FWD playback mode.
4. Adjust RV802 so that the frequency counter reading becomes
3,000 + 10Hz.
Frequency difference between the beginning and the end of the tape
- should be within 3%.
Frequency difference between the deck A and deck B the beginning
of the tape should be within 1.5%.
Adjustment Location : AUDIO board, CONNECTOR board.
(See page 10)
Playback Level Adjustment
Procedure :
— Forward Playback Mode —
test tape
P-4-L300
(315Hz, OdB)
LINE OUT
Adjust RV11(L-CH) and RV21(R-CH) so the VTVM reading
becomes the adjustment limits below.
Adjustment Value :
LINE OUT level : — 7.7 + 0.5dB (0.301 to 0.338V)
Level difference between channels : within 0.5dB
Confirm the LINE OUT level does not change in playback mode
while changing the mode from playback to stop several times.
Adjustment Location : AUDIO board. (See page 10)
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