Read Sony XM-4026 Service Manual online
– 4 –
SECTION 2
ELECTRICAL ADJUSTMENT
BIAS Adjustment
Procedure :
1. Rotare Semi-fixed resistors VR101 and VR201 fully counterclock-
1. Rotare Semi-fixed resistors VR101 and VR201 fully counterclock-
wise as viewed from the component side.
2. No signal is entered, as input signal.
3. Apply the source voltage 14.4V between +12V, REMOTE and
3. Apply the source voltage 14.4V between +12V, REMOTE and
GND terminals.
4. Adjust the VR101 (L-CH) and VR201 (R-CH) so that the digital
voltmeter reading becomes the adjustment limits below.
Adjustment Limits : 1.5
±
0.5mV
Adjustment Location :
VR101
VR201
TP1
R140
R240
CNJ903
TP2
JW15
JW12
+
–
digital
voltmeter
L-CH
L-CH
R-CH
R-CH
[MAIN AMP BOARD] (Component side)
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