4. TROUBLE SHOOTING
- 89 -
4.6.4 Checking PAM Block
PAM Control Signal
TP1. GSM_PA_RAMP : Power Amp Gain Control. typically, 0.5V < Vapc < 1.6V, TP2. GSM_PA_EN :
Power Amp Enable
(Power ON : higher than 2.5V , Power OFF : lower than 0.7V)
TP3. GSM_PA_BAND : Power Amp Band Selection Control
(GSM Mode : lower than 0.7V , DCS/PCS Mode : higher than 2.5V)
TP4. +VPWR : PAM Supply Voltage Vcc higher than 3.5V
TP4
TP1
TP2
TP3
(1%)
5
G2
1
IN
4
O2
B7844
FL103
C1052
100u
0.5p
C1828
220
R1020
33p
C1046
R1018
270
R1021
220
68p
C1038
100p
C1511
L172
4.7nH
R1008
2.2K
R1016
15
12
GND6
GND7
13
14
GND8
OUT_DCSPCS
5
OUT_GSM
1
SW1
9
SW2
11
VB
3
10
VC
X101
MQW5V0C869M
2
GND1
4
GND2
6
GND3
GND4
7
8
GND5
R1014
15
270
R1019
C1056
51p
R1022
51
C1051
33p
TX_EN
VBATT
4
VCC21
8
VCC22
18
13
VCC_OUT
VRAMP
6
5
VREG
+VPWR
BS
2
1
DCS_PCS_IN
DCS_PCS_OUT
16
9
GND1
11
GND2
GND3
12
GND4
14
15
GND5
GND6
17
GSM_IN
7
GSM_OUT
10
19
PGND1
PGND2
20
21
PGND3
3
U102
AND0041
0.5p
C1829
6.8nH
L402
C1041
22n
G2
1
IN
2
OUT
FL104
NFM21PC105B1A3
G1
3
4
GSM_PA_BAND
GSM_PA_EN
GSM_PA_RAMP
Schematic of PAM block
TP1
TP4
TP2
TP3
Содержание CU500 - Cell Phone
Страница 1: ...Date June 2006 Issue 1 0 Service Manual Model CU500_TU500 Service Manual CU500_TU500 ...
Страница 3: ... 4 ...
Страница 41: ...3 TECHNICAL BRIEF 42 Figure PM6650 Functional Block Diagram ...
Страница 68: ...4 TROUBLE SHOOTING 69 4 1 RF Component Bottom Side 4 TROUBLE SHOOTING ...
Страница 69: ...4 TROUBLE SHOOTING 70 ...
Страница 73: ...4 TROUBLE SHOOTING 74 Check R400 of PMIC U400 Check R223 of MSM U200 ...
Страница 77: ...4 TROUBLE SHOOTING 78 For testing Max power of UMTS 1900MHz is needed ...
Страница 85: ...4 TROUBLE SHOOTING 86 ...
Страница 87: ...4 TROUBLE SHOOTING 88 ...
Страница 91: ...4 TROUBLE SHOOTING 92 ...
Страница 93: ...4 TROUBLE SHOOTING 94 D701 VREG_MSMC VREG_MSME VREG_MSMA VREG_MSMP VREG_TCXO C1133 48Mhz X400 32 768Mhz ...
Страница 95: ...4 TROUBLE SHOOTING 96 R300 Q401 Q400 ...
Страница 98: ...4 TROUBLE SHOOTING 99 Q501 X 200 U505 ...
Страница 105: ...4 TROUBLE SHOOTING 106 CN602 CN1 ...
Страница 107: ...4 TROUBLE SHOOTING 108 C102 C104 R200 R201 ...
Страница 109: ...4 TROUBLE SHOOTING 110 CN602 SPK_LP L N SPK_RP RN AMP block ...
Страница 111: ...4 TROUBLE SHOOTING 112 MIC U303 ...
Страница 113: ...4 TROUBLE SHOOTING 114 Mic input 5 4 2 1 3 6 Headset detect port ...
Страница 129: ...5 DOWNLOAD 130 3 NV Restore error When you meet the NV Restore error ...
Страница 130: ...5 DOWNLOAD 131 Connect to the phone Click on Cancel ...
Страница 135: ...Table 6 1 1 RF Block Component 6 BLOCK DIAGRAM 136 ...
Страница 138: ...6 BLOCK DIAGRAM 139 Top Side ...
Страница 139: ...6 BLOCK DIAGRAM 140 Bottom Side ...
Страница 147: ... 148 8 pcb layout ...
Страница 148: ... 149 8 pcb layout ...
Страница 149: ... 150 8 pcb layout ...
Страница 150: ... 151 8 pcb layout ...
Страница 151: ... 152 ...
Страница 157: ...9 CALIBRATION 158 9 3 HOT KIMCHI Example Choose Exe_Cu500Ag_100 ...
Страница 158: ...9 CALIBRATION 159 Click APPLY button Click START button ...
Страница 161: ... 162 ...
Страница 185: ...Note ...
Страница 186: ...Note ...