4. TROUBLE SHOOTING
- 60 -
4.9 MIC Trouble
4.9 MIC Trouble
R
R2211
R221144
C222211
C
C222222
C
C221177
C
C225500
M
MIIC
C220000
Figure 4-22
Figure 4-23
0
0
1
)
8
0
6
1
(
1
1
2
R
R2
10
2K
VA202
6
1
2
C
p
9
3
VA203
0
5
2
C
u
0
1
0.1u
C2
20
39p
C2
22
1K
R2
08
0
0
1
4
1
2
R
SP202
R2
15
2K
SP203
9
1
2
C
p
9
3
0
0
4
2
R
u
0
1
7
1
2
C
C2
21
39p
N
R
O
N
N
I
V
P
R
O
N
N
I
V
OB4-15L42-C33L
MIC200
1
2
2V55_VAN
Re-soldering R207
Replace the
U301.
Check the C221
voltage=~1.9V, C222=a few
hundred mV?
Yes
START
Check the C217 voltage is
almost 2.2V(DC)
No
No
Yes
Voltage at pin 23 of
U301 is 2.55V(DC)?
No
Yes
Check R211 voltage=~1.4V,
R214 voltage=~1.0V?
Receiver will work properly.
Re-soldering R210
Replace the
MIC200
Check the soldering
of R210
No
Yes
No
Replace the
main board
Содержание G1610
Страница 1: ...Service Manual Model G1610 Service Manual G1610 P N MMBD0045701 Date February 2005 Issue 1 0 ...
Страница 52: ...4 TROUBLE SHOOTING 51 Graph 4 14DCS TX Graph 4 15EGSM TX VC1 VC2 VC1 VC2 VC1 VC2 VC1 VC2 ...
Страница 70: ...5 DISASSEMBLY INSTRUCTION 69 5 DISASSEMBLY INSTRUCTION Figure 5 1 Figure 5 2 ...
Страница 71: ...5 DISASSEMBLY INSTRUCTION 70 Figure 5 3 Figure 5 4 ...
Страница 72: ...5 DISASSEMBLY INSTRUCTION 71 Figure 5 5 ...
Страница 73: ...5 DISASSEMBLY INSTRUCTION 72 Figure 5 6 1 3 2 4 Figure 5 7 1 2 3 ...
Страница 74: ...5 DISASSEMBLY INSTRUCTION 73 Figure 5 8 4 2 3 1 2 1 Figure 5 9 ...
Страница 75: ...5 DISASSEMBLY INSTRUCTION 74 Figure 5 10 ...
Страница 82: ...6 DOWNLOAD AND CALIBRATION 81 11 Wait until Sending Block is completed 1 Wait Until Sending Block is completed ...
Страница 86: ...7 BLOCK DIAGRAM 85 7 BLOCK DIAGRAM Power supply ...
Страница 87: ... 86 ...
Страница 101: ...11 STAND ALONE TEST 100 11 2 Standalone Test Equipment Setup GSM Test Equipment Power Supply RS 232 Cable PC JIG Phone ...
Страница 108: ...12 AUTO CALIBRATION 107 12 3 Equipment Setup Figure 12 1 Equipment Setup ...
Страница 111: ...12 AUTO CALIBRATION 110 ...
Страница 113: ...13 EXPLODED VIEW REPLACEMENT PART LIST 112 ...