Electrical Adjustments; Deck Section - Aiwa CX-BK33 Service Manual

CX-BK33
QQ
3 7 63 1515 0

DECK SECTION

0 dB = 0.775 V
• Precaution
1. The adjustment should be performed with the rated power
supply voltage.
2. The adjustments should be performed for both L-ch and R-ch.
RECORD BIAS ADJUSTMENT
Procedure:
1. Record mode
MAIN board
MD (AUX) IN jack (JK602)

1) 315 Hz

50 mV (–23.8 dB)
2) 10 kHz

AF OSC
600 Ω
attenuator
2. Mode: Playback
i-Bass OFF
BASS 0
TREBLE 0
recorded
portion
set
TE
L 13942296513
3. Confirm playback the signal recorded in step 1 become
adjustment level as follows.
4. If these levels do not adjustment level, adjustment the SFR452
(L-ch) and SFR451 (R-ch) to repeat steps 1 and 4.
Adjustment level: Playback output of 315 Hz to playback output
of 10 kHz: 0 ± 1.0 dB (0 ± 4.5mV).
Adjustment Location: DECK board
— DECK BOARD (Component Side) —
SFR451
REC Bias
Adjustment
(R-ch)
www
.
28
http://www.xiaoyu163.com
SECTION 6

ELECTRICAL ADJUSTMENTS

blank tape
CN-123
set
level meter
+
–
SPEAKER board
SPEAKER
terminal (JK502)
SFR452
REC Bias
Adjustment
(L-ch)
x ao u163
y
i
http://www.xiaoyu163.com
2 9
8
– MAIN Board (Conductor Side) –
JK602
MD (AUX) IN jack (R-CH)
MD (AUX) IN jack (L-CH)
– SPEAKER Board (Conductor Side) –
Q Q
3 6 7 1 3 1 5
JK502
CN503
4
1
co
.
9 4 2 8
0 5 8 2 9 9 4 2 8
SPEAKER terminal (L-CH)
SPEAKER terminal (R-CH)
m
9 9
9 9