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TROUBLE SHOOTING
VIDEO DoEs Not APPEAR
\
(
Start
D
Check the Vec input
video level]
(pin85,88,91) and
reference voltage
(pin86,89,92) of ICO8
i
Check ICO9
Check the PLLO
1 (pin6), H-syne (pin17),
(1C09) is OK ?
CKL and pin 21,20
|
(CLK+, CLK-)
| is
ane eras
|
heck the A/!
convertor (ICO8)
is OK?
Check the LED
is lighted ?
Check if the power is
i
OK
!
!
|
| Check the video cable
Y.:
and check if the H-
| Sync or V-sync is over
i
specifications
Power Saving
Check the PLL1
|
Check C03.
Is contrast and
Y,:
Adiust contrast and
(IC03) is OK ?
:
(pin4, 5, 12)
:
i
| Check IC02 Vec and
Hsync-0, Vsync-0,
|
Check IC31 clamping
|
'
signal (pin19) input
: Signal (pin2, 6, 11) and |
i
Vec
DCLK-out, DE-out
End
}
Page 39
'Confidential
Do Not Copy,
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