Sharp XG-NV1E Service Manual page 29

TROUBLE SHOOTING TABLE
Checking synchronization
Do horizontal and vertical sync
signals (at pins (13) and (14) of RGB
connector) come out of PC?
Yes
Are there signal outputs at pins
(3)(IN+) of IC2003 and IC2004?
Yes
Are there signal outputs at pins
(15)(H) and (217)(V) of IC1201?
Yes
Go to "Checking the PLL circuit".
Is there signal output at pin (3)(IN+)
of IC2005?
Yes
Is there signal output at pin (216)(C)
of IC1201?
Yes
Go to "Checking the PLL circuit".
Checking the PLL circuit
Are there signal outputs at pins
(6)(X1/EXT) and (22)(EXFBK) of
IC1013?
Yes
Is there signal output at pin
(15)(DOTCLK) of IC1013?
Yes
Check the sync circuit and its
peripheral parts.
(Continued)
No
No
Connector or nearby circuit in trouble.
No
IC2003, IC2004 or nearby circuit in
trouble.
No
Connector or nearby circuit in trouble.
No
IC2005 or nearby circuit in trouble.
No
IC1201 or nearby circuit in trouble.
No
IC1013, IC1201 or nearby circuit in
trouble.
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XG-NV1E
XG-NV1EA