Sharp XV-C100U, Service Manual

Page: 27 / 73

XV-C100U
27
TROUBLE SHOOTING TABLE (Continued)
No component
picture
Is there Y signal input at pin (35) of
IC3003?
No
Yes
No Are there signal inputs at pins (13)
and (14) of IC3003?
Are there signal outputs at pins (44),
(45) and (46) of IC3003?
Yes
Check Q3001, Q3020,
Q3021 and its peripheral
circuits.
Check IC2001 and its
peripheral circuits.
No
No
Check IC3003 and its
peripheral circuits.
Are there signal inputs at pins (35),
(36) and (37) of IC801?
Yes
Check C830, C831 and
C832 and their peripheral
circuits.
Check IC801 and its peripheral
circuits.
Yes
Check the IC1501 interface circuit.
No component
color
Are there signal inputs at pins (33)
and (34) of IC3003?
No
Check IC3003 and its peripheral
circuits.
Yes
Check Q3006 thru Q3013
and Q3007 thru Q3010.