- 23 -
Check +B voltage
at Pin1 of P805A.
Is the voltage at
Pin 15,17 of IC501 3.3V?
Does the square
waveform from pin50
of IC501 appear?
Is the waveform at
collector of Q402 normal?
Is the waveform of collector
of Q403 normal?
Check/Replace
T401.
Check/Replace
F801, D802,
IC801,IC802.
Check/Replace
D802.
Check/Replace
D805,Q801,
ZD801.
Check/Replace
IC501
Check/Replace
Q402, T401.
Check/Replace
Q403.
Check 5V, 9V,
12V lines
Check I
2
C
Bus lines
(SDA, SCL)
Check F801.
Check the voltage
of C812(+).
Check the voltage
at pin 4 of IC801.
Check/Replace IC887, IC871.
Check the secondary voltage
are shorted
Normal
0V
OK
6
~
8V
Open
0V
Lower than 6V
No
No
No
No
Yes
Yes
Yes
Yes
Yes
8.NO RASTER
Содержание PT-43
Страница 28: ... 28 PRINTED CIRCUIT BOARD SIGNAL ...
Страница 30: ... 30 MAIN2 DEF ...
Страница 32: ... 32 SMPS POWER SWITCH PRE AMP ...
Страница 33: ... 33 CPT CONV OUT ...
Страница 34: ... 34 PIP SIDE AV CONTROL ...
Страница 35: ... 35 VM TOP VM BOTTOM ...
Страница 36: ... 36 LG CONVERGENCE TOP LG CONVERGENCE BOTTOM ...
Страница 37: ... 37 SGS THOMSON CONVERGENCE TOP SGS THOMSON CONVERGENCE BOTTOM ...
Страница 38: ... 38 AV TOP AV BOTTOM ...
Страница 66: ...P NO 3854VA80A MAIN1 VFD PIP DATE 2000 11 30 ...
Страница 67: ...P NO 3854VA80B SMPS DEF CPT VM DATE 2000 11 30 ...
Страница 68: ......
Страница 69: ...Oct 2000 Printed in Korea P NO 3828VD0080A ...