Sharp 29A-SX1 - Page 22

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29A-SX1
29A-SX5
29A-SX8
Does D1002 (Power LED) turn on?
D1002 (Power LED) turn on and off.
TROUBLE SHOOTING TABLE (Continued)
NO RASTER
Normal
Check CRT connector (KY), (H) bias.
Does RY1700 turn on?
Turns on, but soon turns off.
Abnormal
Check IC3801, IC3802 and IC3803.
Check protecter circuit and its related parts (2) pin of IC1000 vertical pulse.
Check the power circuit consisting of IC700, IC752 and IC600.
Yes
Yes (RED)
Yes
(Bus error)
No
See many often D1002 flashes in red. This indicates which IC to check up.
No
A
B
Dose horizontal circuit momentary oscillate?
Check R1610, IC801 and its peripheral parts.