Sharp VC-A582U

45
VC-A582U
VC-A582U(A)
VC-H982U
Picture E-E does not appear.
Is picture signal input into IC201 pins 30 and 31?
YES YES
YES
YESYES
YES
NO
NO NO NO
NO
NO
NO
NO
1 External input mode Check the line between the rear video input terminal and IC201 pin 30. 2 U/V tuner mode Check the line between the U/V tuner pin 25 and IC201 pin 31.
Is picture signal output to the IC201 pin 52?
Is picture signal input into the IC701 pin 49?
Is picture signal output to the IC701 pin 47?
Check the line between IC201 pin 52 and IC701 pin 49.
Check the line between IC201 pins 63 and 62 and IC701 pins 56 and 57.
Is picture signal output to the emitter of video output buffer (Q251)?
1 Line output: Check Q251 periphery and output terminal periphery. 2 RF output: Check Q251 periphery and tuner (pin 6) periphery.
Is 5V applied to the IC201 pins 12, 61 and 90?
Is 5V applied to the IC701 pin 51?
Check the PC 5V line.
Check the AT 5V line.
Is serial data clock signal applied to the IC201 pins 63 and 62?
Check Q251 periphery.
FLOW CHART NO.18