4. TROUBLE SHOOTING
- 88 -
Folder on/off will
work properly
Is there the magnet
in the folder side?
START
Replace U102
Place the magnet properly.
NO
YES
Voltage at pin 1(VDD)
of U403 = 2.8V?
YES
NO
Voltage of VEXT at U102
= 2.8V?
NO
Resolder U403
YES
Open folder.
Voltage at pin 2(OUT) of
Resolder R418 and U403
NO
YES
Close folder.
Voltage at pin
YES
Replace U403
NO
Does it work properly?
YES
Change Main board
NO
U403 = 2.8V
2(OUT) of
U403 = 0V
Checking Flow
Содержание C2100
Страница 1: ...Service Manual Model C2100 Service Manual C2100 P N MMBD0048201 Date April 2005 Issue 1 0 ...
Страница 54: ...4 TROUBLE SHOOTING 55 4 2 TX Trouble SW500 U503 X500 FL500 U501 U505 5 4 1 3 2 Test Points Figure 4 7 ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 7 MIC Trouble Soldering Check U203 C225 C224 C230 Test Points Figure 4 18 ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 10 KEY backlight Trouble Test Points Figure 4 21 ...
Страница 104: ... 105 8 PCB LAYOUT ...
Страница 105: ... 106 8 PCB LAYOUT ...
Страница 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 117: ...Note 118 ...
Страница 119: ......
Страница 135: ......