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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved
Only for training and service purposes
Checking Flow
Checking Flow
Waveform
Waveform
RF_OUT
RF_IN fed up with CW signal
in low gain mode of PAM
Figure 2.2(i)
Check pin6(TP1),8(TP2) at U1008
Check if there is any major difference referring
To Figure 2.2(i) Is it similar?
Start
PAM circuit is OK. See next page
YES
Replace U1008
YES
Check pin4, 12(TP3) at U1008 (Vcc)
whether it is higher than 3.4V.
Check Vcc line
NO
YES
Check pin3(TP4) at U1008(PA_R1)
whether it is lower than 2.2V.
Check PA_R1 line
NO
YES
Check pin7 at U1008(PA_ON1 signal)
whether it is higher than 2.2V.
Check PA_ON line
NO
YES
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Summary of Contents for VX10000 Voyager
Page 129: ...1 Assembly and Disassembly Diagram Z 3 X B O X C O M ...
Page 130: ...Z 3 X B O X C O M ...
Page 131: ...Z 3 X B O X C O M ...
Page 132: ...2 Block and Circuit Diagram Z 3 X B O X C O M ...
Page 134: ...VX10000 Circuit Diagram Main FPCB Z 3 X B O X C O M ...
Page 135: ...Main Board Circuit Z 3 X B O X C O M ...
Page 136: ...Z 3 X B O X C O M CDMA ANT DCN ANT DCN TX DCN RX PCS ANT PCS TX PCS RX GPS Internal Use Only ...
Page 137: ...Z 3 X B O X C O M Internal Use Only ...
Page 138: ...Z 3 X B O X C O M Internal Use Only ...
Page 139: ...Z 3 X B O X C O M Internal Use Only ...
Page 140: ...Z 3 X B O X C O M Internal Use Only ...
Page 141: ...Z 3 X B O X C O M Internal Use Only ...
Page 142: ...Z 3 X B O X C O M Internal Use Only ...
Page 143: ...FPCB Circuit Z 3 X B O X C O M ...
Page 144: ...Z 3 X B O X C O M Internal Use Only ...
Page 145: ...3 Part List Z 3 X B O X C O M ...
Page 156: ...4 Components Layout Z 3 X B O X C O M ...
Page 160: ...U101 cam1 cam2 R100 R101 R102 CON102 C100 C101 C102 C104 C105 Z 3 X B O X C O M ...
Page 161: ...5 BGA Pin Map Z 3 X B O X C O M ...
Page 162: ...BOTTOM VIEW 1 U2004 MSM6550 V5 PIN A1 Corner USED NOT USED Z 3 X B O X C O M ...
Page 163: ...BOTTOM VIEW 2 U3001 MCP TYA000BC10H0GG PIN A1 Corner USED NOT USED Z 3 X B O X C O M ...
Page 164: ...BOTTOM VIEW USED NOT USED 3 U4002 Audio Amp MAX9775EBX PIN A1 Corner Z 3 X B O X C O M ...