Sharp XG-P10XU Service Manual page 38

XG-P10XU
TROUBLE SHOOTING TABLE
Checking IC6001 (3-D noise reduction circuit)
and its peripheral circuits
Are there signal inputs at pins (40)
(Y signal) and (45)(chroma signal) of
IC6001?
Are there signal outputs at pins (55)
(Y signal) and (51)(chroma signal) of
IC6001?
Are there signal outputs at the
emitters of Q6008 (Y signal) and
Q6009 (chroma signal)?
Check IC6009, IC6010 and IC801
(RGB signal output circuit).
No colour or unusual tone (NTSC, PAL)
Is there chroma signal input at pin
(20) of IC801?
Are there signal outputs at pins
(46)(R-Y) and (45)(B-Y) of IC801?
Yes
Yes
Yes
Yes
Yes
Check IC803, IC814 and their
peripheral circuits.
(Continued)
No
Check the buffer circuit of Q6004 thru
Q6006 as well as Q6001 thru Q6003.
No
Check IC8003, IC8002 (memory) and
their peripheral circuits.
No
Check the low-pass circuit around
Q6008, Q6007 and Q6009.
No
Go back to the signal processing
block.
No
Check the oscillation of X801 and
X802, and their peripheral circuits.
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