Sony Trinitron Multiscan CPD-1302 Service Manual page 77

SONY.:
SERVICE MANUAL
US Model
Canadian Model
Chassis No. SCC-AOBA-A
CORRECTION-2
Correct the service manual as shown below.
File this correction with the service manual and supplement-1 .
. . - : indicates corrected portion
SECTION 3 (Service Manual), SECTION 2 (Supplement)
SAFETY RELATED ADJUSTMENTS
PAGE
11
(Service Manual
7
(Supplement)
INCORRECT
I
+B MAX (
H
R476. R4BS)
I
Btl sure to perform the following adjustment aftllr replacing
tile PIIrtI below. (Marked on
~
the schematic diagram).
(G board) 0653. R658. R659. T653
(BA bOllrd)
IC407 •. IC404. IC405. (240S. R40S. R470. R417. R472.
R473. R474. R475. R476. R477. R478. R47S. R424.
R425. R44B. R47S. R4BO. R4BS. R488.
7. Input
a
dot signal and Slit PICTURE. 8RIGHT to mini·
mum.
2. Turn +B VR (RV403) to maximum.
3. Ob$llTVe BA board to connectllr pin (]) 8A· 7 on the
digitsl multimeter.
4. Slit SMC'70 output to fH
a
75.734 kHz and confirm
that the +8 linll isle$$ than 62.0V dc.
5. Slit SMC·70 output to fH - 78.4 kHz and confirm that
the +8 line is le$$ than 72.8 V dc.
6. Sat SMC'70 output to fH - 27.8 kHz and confirm that
thll +8 linll is 111$$ than 86.0V dc.
7. Set SMC·70 output to fH - 25 kHz and confirm that the
+B /ine is le$$ than S7.8V dc.
8. Set SMC·70 output to fH;' 37.5 kHz and confirm that
the +8 line is less than 7 24.5V dc.
S. If the specification is not met. adjust R476. R4BS and
reptlBt steps 7 and 3 until satisfied.
CORRECT
I
+B MAX (
H
R476. R4BS)
I
811 surll to perform the following adjustment after replacing
tIIlI PIIrts below. (Marked on
~
the schematic diagram).
(G board) 0653. R658. R65S. T653
(8A board)
IC407. IC404. IC405. 040S. R40S. R470. R477. R472.
R473. R474. R475. R476. R477. R478. R47S. R424.
R425. R44B. R47S. R4BO. R4BS. R4B8.
7. Supply 730±i V AC to with variabla auto·transformer.
-..11
2. Input a dot signal and sat PICTURE. 8RIGHT to mini'
mum.
3. Turn +8 VR (RV403) to maximum.
4. ObseTVII 8A board to connectsr pin (]) BA· 7 on the
digitsl multimllter.
5. Slit SMC'70 output to fH - 75.734 kHz and confirm
that the +8 linll isle$$ than 62.0V dc.
6. Set SMC'70 output to fH = 78.4 kHz and confirm that
the +8 line is IIIss than 72.8V dc.
7. Set SMC·70 output to fH - 27.8 kHz and confirm that
the +8 line is less than 86.0V dc.
8. Set SMC'70 output to fH
z
25 kHz and confirm that the
+8 line is less than S7.8V dc.
S. Set SMC·70 output to fH - 37.5 kHz and confirm that
tha +8 line is less than 724.5V dc.
70. If the·specification is not met. adjust R476. R4BS and
repfJllt steps 7 and 3 until satisfied.