Asus M930 Service Manual download pdf (Page 46)

GTC Service Manual

ASUS Proprietary 46

華

華

碩

碩

電

電

腦

腦

10.5

10.5 10.5

10.5 GSM/GPRS

GSM/GPRSGSM/GPRS

GSM/GPRS/EDGE

/EDGE/EDGE

/EDGE

Repair

RepairRepair

Repair Procedure

Procedure Procedure

Procedure

No

YES

EGG Board Level

Repair

Procedure

YES

Check U811, U810, andU800

Tx

Rx

Check relevant components on

the path

U811 (low band) should

higher than U810 (high

band)

about 1dB

No

N

o

Check U801 (SKY77513)

Restart EGG Board Level Repair

Procedure

Check

1. C826 is 3.8V

2. C802 is 2.75V and C805 is

1.8V

3.

R828 has 26MHz

Check the four Rx filter

Check range of Vapc：

Low band 0.25(PL19) ~ 1.3V

(PL5)

Tx or Rx path fail

Recalibration

FEM has R、T、M

waveforms

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