— 11 —
Record Bias Adjustment (Deck B)
Procedure:
Reference)
When set to the test mode performed in
Tape Speed Adjustment
,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and stops is set.
This “REC memory mode” is convenient for performing this adjust-
ment.
1. Press FUNCTION button to select VIDEO.
2. Mode: record
Record Level Adjustment (Deck B)
Procedure:
Reference)
When set to the test mode performed in
Tape Speed Adjustment
,
when the tape is rewound after recording, the “REC memory mode”
which rewinds only the recorded portion and stops is set.
This “REC memory mode” is convenient for performing this
adjustment.
1. Press FUNCTION button to select VIDEO.
2. Mode: record
set
VIDEO (AUDIO) IN
1) 315Hz
2) 10kHz
} 50 mV (–23.8 dB)
AF OSC
attenuator
600
Ω
blank tape
CS-123
3. Mode: Playback
4. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If these levels do not adjustment level, adjust the RV341 (L-CH)
and RV441 (R-CH) on the AUDIO board to repeat steps 2 and 3.
Adjustment level: The playback output of 10 kHz level difference
against 315 Hz reference should be ± 0.5 dB.
Adjustment Location: AUDIO board
recorded
position
level meter
VIDEO (AUDIO) IN
315 Hz 50 mV (–23.8 dB)
set
blank tape
CS-123
600
Ω
attenuator
AF OSC
3. Mode: Playback
level meter
set
main board
CN403 Pin
3
(L-CH)
Pin
1
(R-CH)
recorded
position
4. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If these levels do not adjustment level, adjust the RV301 (L-CH)
and RV351 (R-CH) on the main board to repeat steps 2 and 3.
Adjustment level:
CN403 PB level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
Adjustment Location
[AUDIO BOARD] (Conductor Side)
[MAIN BOARD] (Component Side)
main board
CN403 Pin
3
(L-CH)
Pin
1
(R-CH)
set
1 3
CN403
RV351
IC401
RV301
RV351
Record Level Adjustment
(R CH)
RV301
Record Level Adjustment
(L CH)
RV341(Lch),RV441(Rch)
Record Bias
RV301(Lch),RV401(Rch)
Playback Level (Deck B)
RV651 (Normal Speed)
RV652 (High Speed)
Tape Speed
RV652
RV651
RV311
RV411
RV311(Lch),RV411(Rch)
Playback Level (Deck A)
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