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4. Trouble Shooting
- 60 -
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
START
Check Battery Voltage
> 3.35V ?
Push power-on key and
check the level change of
U102 KEYON
Check the voltage of
the following port at U102
VOORE=1.8V ?
VMEM = 1.8 or 2.8V ?
VEXT=2.8V ?
VRTC=1.8V ?
VSIM=2.85V ?
VMIC=2.5V ?
VVCXO=2.75V ?
Logic level at KEYON of U102
= HIGH?
Does it work properly?
THE PHONE WILL
POWER ON.
Charge or Change Battery and try again.
Check the contact of power-key
or dome switch.
Replace U102
Redownload software & try again.
Yes
Yes
Does it work properly?
The power-on procedure is completed.
The problem may be elsewhere.
Replace the main board.
Checking Flow
Содержание C1100
Страница 1: ...Service Manual Model C1100 Service Manual C1100 P N MMBD0034301 Date June 2004 Issue 1 0 ...
Страница 84: ... 83 5 DISASSEMBLY INSTRUCTION Figure 5 3 ...
Страница 85: ... 84 Figure 5 4 5 DISASSEMBLY INSTRUCTION ...
Страница 86: ... 85 5 DISASSEMBLY INSTRUCTION Figure 5 5 Figure 5 6 ...
Страница 87: ... 86 5 DISASSEMBLY INSTRUCTION Figure 5 7 Figure 5 8 3 1 1 2 ...
Страница 88: ... 87 Figure 5 9 5 DISASSEMBLY INSTRUCTION ...
Страница 89: ...5 DISASSEMBLY INSTRUCTION 88 Figure 5 10 Figure 5 11 ...
Страница 90: ...5 DISASSEMBLY INSTRUCTION 89 Figure 5 12 3 2 1 ...
Страница 106: ... 105 9 PCB LAYOUT 9 PCB LAYOUT ...
Страница 107: ... 106 9 PCB LAYOUT ...
Страница 114: ... 113 Figure 11 1 HW test program Figure 11 1 HW test program 11 STAND ALONE TEST ...
Страница 118: ... 117 13 EXPLODED VIEW REPLACEMENT PART LIST 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 EXPLODED VIEW ...
Страница 119: ... 118 Note ...