Sony HTC-V5550 Service Manual page 13

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Record Bias Adjustment (Deck B)
Procedure:
Press the p (CD) button while pressing the DIRECTION
1.
MODE button.
While pressing the p (CD) button, press the ª (TAPE A)
2.
button, set the function to "deck B".
Insert a tape into deck B, press the r REC button, and then
3.
press the ( button to start recording.
4. Mode: Record
AF OSC
attenuator
5. Mode: Playback
recorded
position
set
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6. Confirm playback the signal recorded in step 2 become
adjustment 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 3
and 4.
Adjustment level: The playback output of 10 kHz level difference
against 315 Hz reference should be ± 1.0 dB.
Adjustment Location: AUDIO board
Adjustment Location
[AUDIO BOARD] (Conductor Side)
RV341(Lch),RV441(Rch)
Record Bias
RV301 RV401
RV441 RV341
RV301(Lch),RV401(Rch)
Playback Level (Deck B)
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INPUT POINT
1) 315 Hz
} 50 mV (–23.8 dB)
2) 10 kHz
blank tape
CS-123
600 Ω
PFJ-1
set
level meter
PFJ-1
output
point
RV311(Lch),RV411(Rch)
Playback Level (Deck A)
RV311
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2 9
8
Record Level Adjustment (Deck B)
Procedure:
Press the p (CD) button while pressing the DIRECTION
1.
MODE button.
While pressing the p (CD) button, press the ª (TAPE A)
2.
button, set the function to "deck B".
3. Insert a tape into deck B, press the r REC button, and then
press the ( button to start recording.
4. Mode: Record
AF OSC
5. Mode: Playback
recorded
position
Q Q
3 6 7 1 3 1 5
6. Confirm playback the signal recorded in step 2 become
adjustment 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 3
and 4.
Adjustment level:
Output point from PFJ-1 playback level: 47.2 to 53.0 mV (–24.3 to
–23.3 dB)
Adjustment Location: MAIN board
[MAIN BOARD] (Component Side)
RV411
co
.
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9 4 2 8
INPUT POINT
315Hz 50 mV (–23.8 dB)
600 Ω
attenuator
set
PFJ-1
PFJ-1
set
output
point
0 5 8 2 9 9 4
CNS102
Level (L ch)
RV351
CNS101
m
Record
Level (R ch)
9 9
blank tape
CS-123
level meter
2 8 9 9
RV301
Record
CNP105