Sony TA-FE600R, Руководство по обслуживанию, Страница: 4 / 20

— 4 —
SECTION 2
ELECTRICAL ADJUSTMENT
Bias Adjustment
1. Rotate fully the bias adjusting semi-fixed resistors (RV301, RV351)
to the MIN position (counterclockwise).
2. Connect a digital voltmeter to the CN406 and CN407.
1 pin 3 pin
+
–
–
+
CN406
CN407
3. Set the slide regulator to 0V, and press the POWER button (ON)
on the set.
4. Raise gradually the slide regulator voltage up to the rated volt-
age (230 V).
5. At this time, confirm that the SP relay is turned on (it will click).
6. Adjust the RV301 and RV351 so that a reading of digital voltmeter
is 10 mV to 15 mV.
7. Return the slidack to 0 V, and press the POWER button (OFF) on
the set.
Adjustment Location :
[MAIN A BOARD] — COMPONENT SIDE —
C322 C372
RV351
RV301
BIAS
Adjustment
‘
‘
Test Point Location :
[MAIN B BOARD] — COMPONENT SIDE —
CN406
1 3
C409 C459
CN407
1
3
+
– +
–
DIGITAL
VOLTMETER DIGITAL
VOLTMETER