Sony Trinitron Multiscan CPD-1302 - Horizontal Drive Pulse Width

CPD-1302
13-5. HORIZONTAL DRIVE PULSE WIDTH I
1. Input signal H: 15.734 kHz
V:
60 Hz
2. Connect an oscilloscope to BA board IC40S
pin 10.
3. Adjus~ with adjustment resistor R482 so that
pulse widths
is 24 /.Lsec ±1.S /.LSec.
I
I
Adjust Resistor R482
4.1kn, B.8kn, 10kn,
____ . _____ ______ AC_2:kn,41kn, 100kn
1241-1 sec I----
~ ± 1.51-1 sec
4. Check that the pulse width is 12.5 /.Lsec ±1 /.Lsec
when input signal 30.12 kHz is input.
-- --~ --- -1-- --- - AC·.
1
,2
.
5
J.lS8C ± I----
~ 1J.1S8c
3·6. VERTICAL SYNC FREQUENCY
IDENTIFICATION CIRCUIT
1. Input signal H: 15.734 kHz
V: 60 Hz
2. Connect a digital voltmeter to BA board Q332
base and adjust
RV306 so that the voltage value
is.S.6 V
±O.OS V.
3.
Short between BA·3 pin 1 (MS pin) and ground.
4. Adjust RV307 so that BA board Q332 base
voltage value
is 6.6V ±O.OSV DC.
13-7. +8 ADJUSTMENT I
1. Input signal H: 21.8 kHz
V: 60Hz
2. Connect a digital voltmeter to BA·1 connector
pin 1 and adjust
+B ADJ VR (RV403) so that
the voltage value is 79.5 ±lV DC.
BA BOARD
R482
~
D
IC40S
'----
SONY CORPORATION
TV Group
9·963-637-81
- 12-
o RV403 0
BA-l
• RV306
o
BA-3
English
89HE0505·3
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