34
HCD-M333
Record Bias Adjustment
Procedure :
1. Press the FUNCTION button to select ANALOG IN.
2. Insert a tape into deck, press the
z
TAPE button, and then
press the
X
TAPE button to start recording.
3. Mode : Record
4. Mode : Playback
5. Confirm playback the signal recorded in step become adjustment
level as follows
If these levels do not satisfy adjustment level, adjust the RV653
(L-CH) and RV603 (R-CH) on the TC board to repeat steps 3
and 4.
Adjustment level : The playback output of 10kHz level difference
against 315Hz reference should be 0
±
2.0dB.
Adjustment Location :
[MAIN BOARD]
AF OSC
ANALOG IN (SJ302)
1) 315 Hz
2) 10 kHz
blank tape
CS-123
set
attenuator
600
Ω
34.6 mV (–27 dB)
recorded
position
level meter
set
Pin (GND)
MAIN board
CN105
Pin (L-CH) or
Pin (R-CH)
4
6
2
Record Level Adjustment
Procedure :
1. Press the FUNCTION button to select ANALOG IN.
2. Insert a tape into deck, press the
z
TAPE button, and then
press the
X
TAPE button to start recording.
3. Mode : Record
4. Mode : Playback
5. Confirm playback the signal recorded in step become adjustment
level as follows
If these levels do not satisfy adjustment level, adjust the RV652
(L-CH) and RV602 (R-CH) on the TC board to repeat steps 3
and 4.
Adjustment level :
playback Level : 30.8 to 38.8mV (–28 to –26dB).
Adjustment Location :
[TC BOARD]
AF OSC
ANALOG IN (SJ302)
315 Hz
blank tape
CS-123
set
attenuator
600
Ω
34.6 mV (–27 dB)
recorded
position
level meter
set
Pin (GND)
MAIN board
CN105
Pin (L-CH) or
Pin (R-CH)
4
6
2
RV652
(L-CH)
RV602
(R-CH)
RV653
(L-CH)
RV603
(R-CH)
Record Level
Record Bias
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TEL 13942296513 QQ 376315150 892498299