4. TROUBLE SHOOTING
- 58 -
(2) Checking VCTCXO Circuit
X500.3
(OUT)
X500.4
(VCC)
X500
Check Pin 3.
Refer to Graph 4-1(b)
26 MHzO.K?
No
VCTCXO Circuit is OK
See next Page to check
Mobile SW
VCTCXO Circuit is OK
See next Page to check
Mobile SW
Yes
Check Pin 4.
Refer to Graph 4-1(a)
2.75V OK?
No
Yes
Changing X500
Check U103, PMIC
(1608)
TCXO_26MHz
R515
100
C542
1000p
2V75_VVCXO
2.2u
C543
R514
15K
C541
NA
26MHz
X500
2
GND
3
OUT
VCC
4
VCONT
1
AFC
Test Points
CIRCUIT
Waveform
Checking Flow
Figure 4-7
Graph 4-4(a)
Graph 4-4(b)
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 ...