Sharp XG-NV1E Service Manual page 25

TROUBLE SHOOTING TABLE
Checking the B signal line of signal processing PWB
Is there signal input at pin (15) of
IC1011?
Yes
Is there signal output at pin (30) of
IC1011?
Yes
Is there signal input at pin (7) of
IC1016?
Yes
Are there signal outputs at pins (205)
thru (208), (212) thru (215) of IC1201?
Yes
Is there sync signal input at pins (15),
(216) or (217) of IC1201?
Yes
Are there signal outputs at pins (1),
(2), (3), (5) thru (8), (127) thru (130),
(132) thru (136), (138), (139), (145)
thru (149), (151) thru (154), (156)
thru (160) of IC1206?
Yes
Are there signal outputs at pins
(156), (157), (158), (162), (163),
(164), (166) and (167) of IC1001?
Yes
Are there signal outputs at CH10 thru
CH17, CH20 thru CH27, CH30 thru
CH37, CH40 thru CH47, CH50 thru
CH57, and CH60 thru CH67 of
IC1001?
Yes
Is there clock output at pin (233) of
IC1001?
Yes
IC1003, IC1004, IC1028 or nearby
circuit in trouble.
No
Check pin (4) line of connector TN.
No
Do voltages at pins (7), (18) and (19)
of IC1012 change?
Yes
Is there HSYNC signal input at pin
(23) of IC1011?
Yes
No
IC1011 or nearby circuit in trouble.
No
Is there clock output at pin (14) of
IC1201?
Yes
IC1015 or nearby circuit in trouble.
No
No
Is there clock input at pin (49) of
IC1201?
Yes
IC1206 or nearby circuit in trouble.
No
Are there clock inputs at pins (60),
(103) and (143) of IC1206?
Yes
IC1001 or nearby circuit in trouble.
No
Is there clock input at pin (94) of
IC1001?
Yes
No
IC1001 or nearby circuit in trouble.
25
(Continued)
No
IC1012, IC5002 or nearby circuit in
trouble.
No
Go to "Checking synchronization".
No
IC1201 or nearby circuit in trouble.
Go to "Checking synchronization".
No
Check IC1002 and its peripheral parts.
No
No
IC1009 or nearby circuit in trouble.
XG-NV1E
XG-NV1EA