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DECK SECTION
0 dB=0.775 V
Note: Confirm each contents of this section first of all. If the results are
not satisfied, do the adjustment.
1.
The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
2.
The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
3.
The adjustments should be performed for both L-CH and R-
CH.
REC BIAS ADJUSTMENT
Procedure:
1. Mode: REC
FUNCTION: VIDEO
MAIN board
AUDIO IN MD (VIDEO) jack (SJ302)
L-CH, R-CH
1) 315 Hz
50 mV (– 23.8 dB)
2) 10 kHz
AF OSC
600 Ω
attenuator
2. Mode: Playback
recorded
portion
set
MAIN board
SPEAKER terminals (SJ301)
L-CH, R-CH
3. Confirm playback the signal recorded in step 1 become speci-
fied values as follows.
If these values are out of specification values, adjust the RV101
(L-CH) and RV201 (R-CH) on the TC board to repeat steps
1and 2.
Specified values: Playback output of 315 Hz to playback output
of 10 kHz: ± 0.5 dB
SECTION 5
ELECTRICAL ADJUSTMENTS
blank tape
CN-123
set
level meter
+
–
Adjustment Location:
– TC BOARD (Component Side) –
RV101 (L)
HCD-CP101
REC Bias
Adjustment
RV201 (R)
13
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