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4. TROUBLE SHOOTING
- 68 -
START
Check Battery Voltage
> 3.35V
Push power-on key
And check the level change
of PWRKEY
Check the voltage of
The LDO outputs at U101
Logic level at KEYON of U101
= HIGH
Does it work properly?
THE PHONE WILL
POWER ON.
Charge or Change Battery
Check the contact of power key
Or dome-switch
Replace U101
VCORE=1.8V VVCXO=2.75V
VMEM=2.8V VRTC=1.8V
VEXT=2.8V VSIM=1.8V or 2.85V
VABB=2.75V VMIC=2.5V
Re-download software
The power-on procedure is
Completed. The problem may
be elsewhere.
Does it work properly?
Replace the main board
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Checking Flow
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 ...