- 24 -
NO RASTER
Check +B voltage
at R406.
Is the voltage at
Pin 3 of IC501 9V?
Does the square
waveform from pin 4 of
IC501 appear?
Is the waveform at
collector of Q401 normal?
Is the waveform of collector
of Q402 normal?
Check/Replace
T401
Check/Replace
F801A, D821, IC825
Check/Replace
D821
Check/Replace
D801, D802,
D807, ZD801,
Q801, IC825
Check/Replace
IC501
Check/Replace
Q401, T401,
R416, R417
Check/Replace
Q402
Check 5V, 9V,
12V lines
Check I
2
C
Bus lines
(SDA, SCL)
Check F801A
Check the voltage
of C809(+)
Check the voltage
at pin 9 of IC825
Check/Replace IC887,
D825, D826 Check the
secondary voltage are
shorted
Normal
0V
OK
200
~
380V
6
~
8V
Open
0V
Lower than 6V
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Содержание PF-43A20
Страница 11: ... 11 ALIGNMENT TEST POINT LOCATION GUIDE SIGNAL Board Component side ...
Страница 12: ...DEFLECTION Board Component side 12 ...
Страница 13: ...IF Component side 13 PIP Component side CPT Board Component side VR902R VR902G VR902B ...
Страница 27: ... 27 ...
Страница 28: ... 28 ...
Страница 29: ... 29 ...
Страница 30: ... 30 ...
Страница 32: ... 32 IF MPX PIP ...
Страница 33: ... 33 AV DCF A V 2 ...
Страница 37: ...MEMO 37 ...
Страница 55: ...VIDEO Y C AUDIO ...
Страница 56: ......
Страница 57: ......
Страница 58: ......
Страница 59: ...Oct 1998 P NO 3828VD0053C Printed in Korea ...