Table of Contents
Advertisement
Troubleshooting Guide
DEAD SET
(NO RASTER, NO SOUND)
4.5Vp-p
Check the voltage at the pin8, 37
of IC501
0V
Check the voltage at (+) lead of
C830
0V
Check/Replace
Check the voltage at
FR851, D813, IC805
(+) lead of IC226
8V
Check/Replace
Check all the 8V line
whether short to
ground. If then
remove it.
NO BLANKING AT 4:3 MODE
Check the voltage at the pin11 of
0V
Check/Replace IC01
0V
Check/Replace IC1701
Check the waveform at the pin46, 48
(SDA, SCL) of IC01
Check the voltage at the pin6 of IC01
during main power SW(SW801) on
Check/Replace
Q806, 807, 808
12V
0V
Check/Replace X01
IC809
IC1701
Check the voltage at the pin10 of
Check the voltage at the collector
High
Check/Replace
D1710, Q1704
0V
High(5V)
Low
Open the pin5, 6
(SDA, SCL) of IC03
Abnormal
Check the waveform
at pin13 of IC01
Abnormal
Normal
Check/Replace
IC504
5V
IC1701
1.5V
of Q1704
Low
Check/Replace
D1707, 1708, 1709,
Q1701, 1702, 1703
Advertisement
Table of Contents
