4. TROUBLE SHOOTING
- 51 -
(3) Checking Ant SW & Mobile SW
SW500. RF
C537 (VC1)
FL500. 10
C531 (VC2)
FL500. 1
VC1
VC2
Low
Low
GPO_11
GPO_9
3.3nH
L510
L507
33nH
C531
10p
L508
33nH
1.2p
C537
C500
3.3p
ANT
8
DCS_RX
1
3
DCS_TX
EGSM_RX
10
5
EGSM_TX
4
GND1
6
GND2
7
GND3
9
GND4
12
GND5
13
GND6
GND7
14
11
VC1
2
VC2
FL500
SHS-C090DR
C508
22p
ENWY0002201
SW500
ANT
G1
G2
RF
22nH
L500
ANT501
ANT502
ANT500
C510
27p
ANT_SW2
ANT_SW1
Figure 4-4
ANT SW Control GSM& DCS RX Mode
Graph 4-2
Table 4-1
Test Points
Circuit Diagram
Waveform
ANT_SW1
ANT_SW2
GSM_TX
HIGH
LOW
DCS_TX
LOW
HIGH
RX
LOW
LOW
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: ......