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 tap
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
CN105
19
18
1
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 tap
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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w
.
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1
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9
4
2
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2
9
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0
5
1
5
1
3
6
7
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Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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