5. Trouble shooting
- 78 -
START
"PWRON" signal
= VBAT?
"_RESET" signal
goes to high?
Check the all
LDO's output
Is it correct?
Is the 26MHz
clock From U402
signal correct?
Replace main PCB
Check the
RPWRON,
replace U204
Check solder
U206 or replace it
Check solder
U201 or replace it
Check solder
X401, U403
or replace it
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Connect power
supply to the DUT
Vbat = over 3.35V
Содержание Prada KE850
Страница 1: ...Date March 2007 Issue 1 0 Service Manual Model KE850 Service Manual KE850 ...
Страница 3: ... 4 ...
Страница 5: ... 6 ...
Страница 70: ...4 PCB layout 71 4 PCB layout 4 1 Main Sub PCB component placement Main PCB Top Main PCB Top placement ...
Страница 71: ...4 PCB layout 72 Main PCB bottom Main PCB bottom placement ...
Страница 115: ... 116 6 Download S W upgrade 6 Press the START button ...
Страница 116: ... 117 6 Download S W upgrade 7 Stand by condition Wait is displayed connect the Phone KE850 KE850P40 7 V09a ...
Страница 117: ...6 Download S W upgrade 118 KE850 KE850P40 7 V09a KE850 KE850P40 7 V09a ...
Страница 127: ... 128 LGMC 8 pcb layout ...
Страница 128: ... 129 LGMC 8 pcb layout ...
Страница 129: ... 130 LGMC 8 pcb layout ...
Страница 130: ... 131 LGMC 8 pcb layout ...
Страница 131: ... 132 8 pcb layout ...
Страница 132: ... 133 8 pcb layout ...
Страница 133: ... 134 8 pcb layout ...
Страница 134: ... 135 8 pcb layout ...
Страница 135: ... 136 8 pcb layout ...
Страница 136: ... 137 8 pcb layout ...
Страница 137: ... 138 ...
Страница 139: ...9 RF Calibration 140 9 2 3 Click SETTING Menu 9 2 4 Setup Ezlooks menu such as the following figure ...
Страница 141: ...9 RF Calibration 142 9 2 7 Select MODEL 9 2 8 Click START for RF calibration 9 2 9 RF Calibration finishes ...
Страница 142: ...9 RF Calibration 143 9 2 10 Calibration data will be saved to the following folder Saving format year month day PASS ...
Страница 149: ... 150 ...
Страница 151: ... 152 ...
Страница 172: ...Note ...
Страница 173: ...Note ...