Sharp 14EM4RU

15
15-1 15-2
14EM4RU
21EM4RU
TROUBLE SHOOTING TABLE
NO RASTER
Blown out.
Replace the fuse.
Check IC701, D701 and C705.
The fuse is again blown out.
Does horizontal circuit oscillate ?
Check Q752 and IC801.
D1001 (Power LED Red dimly) turns on or turns ON/OFF.
Check T701 pin (11) voltage (Approx. 310V at 220V AC)
Check F701.
Check Secondary Main+B (Approx. 130V)
Check CRT connector K1-K5 bias.
Check C878.
Check IC801.
Checking the protector circuit.
Check R618 and R619.
D1001 (Power LED Red brightly) turns on.
Check D751
Check R701 and R707