ViewSonic PJ452 Service Manual - Page 17

PWB assembly M

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Picture is not displayed only when the RGB signal is input Check at operating mode Are voltage input at pins(1)(3)(5)(7) of E800 on the PWB assembly MAIN? YES NO (1):+13.2V (3):+17V (5):+6.6V (7):+4.1V Power unit (circuit) PWB assembly MAIN LCD PRISM assembly Picture is not displayed only when the VIDEO, S-VIDEO signal is input Check at operating mode Are voltage input at pins(1)(3)(5)(7) of E800 NO on the PWB assembly MAIN? YES (1): +13.2V (3): +17V (5): +6.6V (7): +4.1V Power unit (circuit) PWB assembly MAIN LCD PRISM assembly ViewSonic Corporation Confidential - Do Not Copy PJ452 14

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Picture is not displayed only
when the RGB signal is input
PWB assembly M
AIN
LCD PRISM
assembly
Check at operating mode
Power unit
(circuit)
NO
YES
Are
voltage input
at pins(1)(3)(5)(7) of
E800 on the PWB
assembly
MAIN?
(1):+13.2V
(3):+17V
(5):+6.6V
(7):+4.1V
Power unit (circuit)
NO
YES
Are
voltage input at
pins(1)(3)(5)(7) of E800
on the PWB assembly
MAIN?
(1): +13.2V
(3): +17V
(5): +6.6V
(7): +4.1V
PWB assembly MAIN
LCD PRISM
assembly
Check at operating mode
Picture is not displayed only when the
VIDEO, S-VIDEO signal is input
ViewSonic Corporation
Co
nfidential
- Do Not Copy
P
J452
14