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4. TROUBLE SHOOTING
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(4) Checking PAM Control Signal
R502
(TX_RAMP)
U500
R501 (PAM_EN)
(GPO_17)
(GPO_16)
2.7p
C552
27p
C504
R509
430
R507
12
2V8_VEXT
C505
1000p
0
R500
C515
10p
VBAT
1000p
C506
R502
10K
C554
1000p
TX_EN
3
4
VBATT
8
VCC21
18
VCC22
VCC_OUT
13
AWT6171R
U500
2
BS
CEXT
5
DCS_PCS_IN
1
GSM_IN
7
R501
0
C519
R508
430
RF2V85
C517
C518
PA_EN
PA_BAND
TX_RAMP
Go to Next Step
Similar?
Yes
No
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Refer to Graph 4 - 7
Go to Next Step
Similar?
Yes
No
Go to Next Step
Similar?
Yes
No
Redownload S/W
Check TX_RAMP and PA_EN
Check if there is
Any Major Difference or not
Refer to Graph 4 - 7
Test Points
Waveform
Checking Flow
CIRCUIT
Graph 4-6
Figure 4-9
Summary of Contents for S5000
Page 1: ...Date November 2005 Issue 1 0 Service Manual S5000 Service Manual Model S5000 ...
Page 3: ... 4 ...
Page 82: ...4 TROUBLE SHOOTING 83 4 12 KEY backlight Trouble Test Points Figure 4 21 ...
Page 101: ...5 DOWNLOAD AND CALIBRATION 102 9 Phone test Finish is shown in below screen ...
Page 103: ... 104 ...
Page 111: ... 112 8 PCB LAYOUT ...
Page 112: ... 113 8 PCB LAYOUT ...
Page 113: ... 114 ...
Page 121: ...10 STAND ALONE TEST 122 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 125: ... 126 ...
Page 126: ... 127 ...
Page 128: ... 129 12 EXPLODED VIEW REPLACEMENT PART LIST ...
Page 129: ... 130 ...