Asus P526, Service Manual

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GTC
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Service Manual
11.2 GSM APC fail
g. Set up the Tx trace test condition.
h. Do the Tx trace test of C340, C456 and C457. If the test results are not like Tx
measurement result 1~4, change D1016 with a new one. Then, repeat this step b
again.
i. If the step b does not work, do the Tx trace test of C450, C451, C312 and C313. If
the test results are not like Tx measurement result 5~8, change the PA with a new
one. Then, repeat this step c again.
j. Do the Tx trace test of R308 with the oscilloscope. If the test result is not the same
as Tx measurement result 9, do the following step e.
k. Do the Tx trace measurement of R384 with the oscilloscope. If the test result is
not like Tx measurement result 10, change the E-syren with a new one. If the test
result of step e is correct but the test result of step d is not correct, change the RF
Transceiver HD155154NP.
l.
After the replacement of the E-syren, repeat step b~e as long as the PCB could
boot correctly. If the PCB could not boot correctly, you should do the trouble
shoot procedure of the E-syren and the OMAP 850. The trouble shoot guide about
the base band part of P526 has recorded this procedure amply.
PA
E-syren
OMAP 850