– 11 –
Adjustment Level :
OUTPUT level : –23.3dB to –24.3dB (47.3 to 53.1mV)
Adjustment Location : MAIN board.
Adjustment Location :
[ MAIN BOARD ] – Component side –
CN307
RV304
RV404
RV380
RV401
RV301
RV402
RV403
RV302
RV303
IC303
IC901
CN308
Record Bias Adjustment
DECK B
Procedure :
1. Mode : record
set
AF OSC
attenuator
1) 315 Hz
2) 10kHz
47k
Ω
47k
Ω
Input point (see page 9)
51.2mV (–23.6dB)
blank tape
CS-123
2. Mode : Playback
set
Output level measurement point
(see page 9)
level meter
+
–
record
portion
3. Confirm playback the signal recorded in step1 become adjustment
level as follows.
4. If these levels do not adjustment level, adjustment the RV304 (L-
CH) and RV404 (R-CH) to repeat step 1 and 4.
Adjustment level : Playback output of 315Hz to playback output
of 10kHz : 0 ± 0.5dB
Adjustment Location : MAIN board.
Record Level Adjustment DECK B
Procedure :
1. Mode : record
set
AF OSC
attenuator
47k
Ω
47k
Ω
Input point (see page 9)
315Hz 51.2mV (–23.6dB)
blank tape
CS-123
2. Mode : playback
set
Output level measurement point
(see page 9)
level meter
+
–
record
portion
3. Confirm playback the signal recorded in step1 become adjustment
level as follows.
4. If these levels do not adjustment level, adjustment the RV303 (L-
CH) and RV403 (R-CH) to repeat steps 1 and 2.
Содержание HCD-H331
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