4. TROUBLE SHOOTING
- 81 -
START
Does the SIM cards
supports 3V ?
NO
Change the SIM Card. Our phone
Is supported only 3V SIM card.
YES
Voltage at pin1 of
J300 is 3V?
NO
Re-solder J300
YES
YES
Replace J300
YES
Voltage output
of VSIM LDO
Is 3V?
Change the SIM Card
And try again.
Does it work
Properly?
YES
Change SIM Card
Re-download SW.
Does it work
Properly?
NO
Change the main board
NO
YES
SIM Card will be detected.
Checking Flow
Содержание C3380
Страница 1: ...Service Manual Model C3380 Date November 2005 Issue 1 0 Service Manual C3380 ...
Страница 3: ... 4 ...
Страница 83: ...4 TROUBLE SHOOTING 84 4 11 KEY backlight Trouble Test Points Figure 4 22 ...
Страница 98: ...4 TROUBLE SHOOTING 99 Yes No Yes No Replace M201 Establish a call Replace U101 Software Re_download ...
Страница 109: ...Note 110 ...
Страница 116: ... 117 8 PCB LAYOUT ...
Страница 117: ... 118 8 PCB LAYOUT ...
Страница 125: ...10 STAND ALONE TEST 126 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 129: ... 130 ...
Страница 131: ... 132 ...