Sony TC-766-2 Service Manual page 18

Stereo tape deck
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TC-766-2
|
Record
Bias Adjustment
Setting:
MONITOR
switch:
TAPE
Procedure:
Mode:
record and simultaneous playback
af osc
@)
attenuator
MIC (L & R)
1 kHz, 0.77mV (-60aB)
SONY SLH-S1
(blank tape)
LINE OUT (L & R)
As
trimmer
capacitor C135
(L-CH)
or C335
(R-CH)
is slowly
turned
clockwise,
VTVM
reading will go up to a maximum and then start
falling again. Adjust the capacitor until VTVM
reads 0.5 dB below and beyond the maximum
reading.
maximum
reading
0.5 dB (allowance: 0—-1 dB)
1
1
i
1
1
'
1
1
!
1
1
appropriate point
be
-——> clockwise turn of trimmer capacitor
Adjustment Location:
— audio amp board —
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C135 (L-CH)
C335 (R-CH)
22
Record
Level Adjustment
Setting:
MONITOR
switch:
TAPE
Procedure:
Mode:
record and simultaneous
playback
af osc
SONY
SLH-S1
(blank tape}
Mic
(tL & R)
1 kHz, 0.77mV ({-60 dB)
LINE OUT (L & R)
RV103 (L-CH)
RV303 (R-CH)
0.44V (-5 dB)
Adjustment Location:
— audio amp board —
RV103 (L-CH)
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RV303 (R-CH)

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