OK
NG
Proceed " Checking the DC/DC converter circuit" section.
OK
NG
Proceed " Checking the DC/DC converter circuit" section.
OK
NG
Failure Point
1) Printed wire broke between X301 and I305 pin96, pin97.
2) C379, C380 is short or open.
3) X301 failure.
OK
NG
OK
NG
Failure Point
1) Printed wire broke between I305 pin37, pin38, pin39, pin40 and
I306 pin1, pin2, pin5, pin6.
2) I306 failure.
Failure Point
I306 failure.
Failure Point
1) Printer wire broke between I305 pin84
and C378
2) C78 is short.
NG
OK
Failure Point
1) Printer wire broke between I305 pin84 and C378.
2) C381 is short.
3) R358, D328 is failure
4) I305 is failure
Check +3.3V supply on I305 pin8,
pin14, pin16, pin24 , pin32, pin49,
pin56, pin75, pin98
Check +1.8V supply on I305 pin
51, 66, 82, 34.
Check X301 14.318MHz clock
input to I305 pin96 and pin97 at
TTL level.
Check I305 pin 84 HWRESET
signal is low level at normal
operation.
Check if D328 pin1 is low.
Check I305 pin37, pin38, pin39,
pin40 SPI signal
(Same as the IIC signal).
Go to cover page
28
5.8 Checking the resolution change IC movement
5. Troubleshooting (continued)
ACER X223W
