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(1) Checking Regulator Circuit
Figure 4-9.
4. Trouble Shooting
10u
C361
VRF
10u
C362
0.01u
C363
3
GND
2
1
IN
5
OUT
U303
MIC5255-2.85BM5
4
BYP
EN
R317
0
VBAT
CLKON
No
No
Yes
Yes
RF 2.85VO.K?
Pin 3. High ?
Changing the Board
Regulator Circuit is OK.
See next Page to check
VCTCXO
Replace U303
Check Pin 5 .
Test Points
Circuit Diagram
Checking Flow
U303. 3
U303. 5
Summary of Contents for C1100
Page 1: ...Service Manual Model C1100 Service Manual C1100 P N MMBD0034301 Date June 2004 Issue 1 0 ...
Page 84: ... 83 5 DISASSEMBLY INSTRUCTION Figure 5 3 ...
Page 85: ... 84 Figure 5 4 5 DISASSEMBLY INSTRUCTION ...
Page 86: ... 85 5 DISASSEMBLY INSTRUCTION Figure 5 5 Figure 5 6 ...
Page 87: ... 86 5 DISASSEMBLY INSTRUCTION Figure 5 7 Figure 5 8 3 1 1 2 ...
Page 88: ... 87 Figure 5 9 5 DISASSEMBLY INSTRUCTION ...
Page 89: ...5 DISASSEMBLY INSTRUCTION 88 Figure 5 10 Figure 5 11 ...
Page 90: ...5 DISASSEMBLY INSTRUCTION 89 Figure 5 12 3 2 1 ...
Page 106: ... 105 9 PCB LAYOUT 9 PCB LAYOUT ...
Page 107: ... 106 9 PCB LAYOUT ...
Page 114: ... 113 Figure 11 1 HW test program Figure 11 1 HW test program 11 STAND ALONE TEST ...
Page 119: ... 118 Note ...