Sharp XG-NV1E, Service Manual

Page: 31 / 66

XG-NV1E
XG-NV1EA
TROUBLE SHOOTING TABLE
(Continued)
31
No
X6001 or nearby circuit in trouble.
No
No
Lamp fails to light up.
Checking the video system
Are there signal inputs at pins (183),
(189) thru (204), (214) and (215) of
IC1201?
Yes
No picture
Is lamp on?
Is voltage applied to connector EA?
Is X6001 oscillating?
Yes
Yes
No
Are there signal inputs at pins (15),
(17) and (19) of IC6001?
Check signal line circuit.
Check power circuit and its parts.
No
Connector VS in trouble.
IC6003, IC6004 or IC6005 in trouble.
IC1201 or nearby circuit in trouble.
Yes
Yes
No
Are there signal inputs at IC6003,
IC6004 and IC6005?
Yes
Is pin (26) of connector VS at "L"
level?
Check IC6001 and its peripheral
circuits.
Input switching in trouble IC5002 or
nearby circuit in trouble.
No
No
Yes
Are there signal outputs at IC6003,
IC6004 and IC6005?
Yes