Acer AL1702 Instrukcja serwisowa - Strona 16
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Check the 5V power are supplied on
P305 pin 1, 2, 3 (to the LCD panel)
NG
OK
Check the P305 all LVDS signals.
NG
OK
Failure Point
1) The LVDS cable broke between P305
and LCD module.
2) LCD module is failure.
Page 14
Check if theVoltage on I312 pin2 that is
DC power at 5V.
NG
OK
Check if the TTL level on I312 pin,1
that TTL level is low.
NG
OK
Failure Point
I312 is failure.
Failure Point
1) Printed wire broke betweenP305 and
I305 LVDS signals.
2) I305 is failure.
Failure Point
1) FB314 is open.
2) Printed wire broke between P305 pin1, 2, 3,
FB304, and P301 pin1, 2.
Check the PANELVCC_EN signal of the
rectangle input Q303 pin2 at TTL high
level.
Failure Point
NG
OK
1) Prined wire broke between Q303 pin
3, R309, R308 and I312 pin1.
2) Q303 is failure.
Failure Point
1) Printed wire broke between Q303 pin 2 and
I307 pin9.
2) I307 is failure.
AL1702