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CHAPTER 4.
E
Market
29Q-FG1A/1F/1N/1S/1U
Service Manual
29Q-FG1A/1F/1N/1S/1U
TV
TROUBLE SHOOTING FLOWCHART
[1] TROUBLE SHOOTING FLOWCHART
Yes
Check protector
circuit and pin 47 &
48 (waveform no.3 &
4) of IC1100. Also
check the waveform
no.5 of IC501 and its
related parts. Check
8V supply at pin 36
of IC1100, 5V supply
at pin 55, 35, 18 &
11 of IC1100.
NO RASTER
LED COLOUR ?
RED
Power on by R/C
RED
Does horizontal circuit
momentary oscillate &
LED is blinking ?
Check 3.3V supply at
pin 2, 4, 5 & 75 of
IC1100. Check
oscillation of crystal
X1001.
GREEN
Check CRT connector
(Heater voltage 120 V,
210 V line)
Normal
Check R,G,B
input and output
of IC 851.
No
4 – 1
29Q-FG1A/1F/1N/1S/1U
(KY), (H) bias.
Abnormal
Check the heater
voltage 120V and
210V line from the
main PWB side.
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