Page 17
R15AAC/AAU (vs15)
Check the 5V power are supplied on P306
pin 1, 2, 3 (to the LCD panel)
Continue
OK
NG
Check if theVoltage on I304 pin2 that is
DC power at 3.3V.
OK
NG
Failure Point
1) I304 failure
Check if the TTL level on I301 pin1 that
TTL level is low (0~0.8V).
OK
NG
OK
NG
Failure Point
1) Prined wire broke between Q302
pin 3, R117, R308, C313 and I301
pin1.
2) Q312 is failure.
Failure Point
1) Printed wire broke between Q302 pin 2
and I307 pin127.
2) I307 is failure.
Check the PANELVCC_EN signal of the
rectangle input Q303 pin2 at TTL high
level.
Failure Point
I301 is failure.
Check the P306 all LVDS signals.
Failure Point
1) Printed wire broke between P306 and
I307 LVDS signals.
2) I307 is failure.
Failure Point
1) The LVDS cable broke between P306
and LCD module.
2) LCD module is failure.
OK
NG
