LG VX11000 Service Manual page 96

VX11000
Check the +BATT voltage > 3.4V
LG Electronics Inc.
START
Check battery voltage > 3.4V
YES
YES
Check the voltage of
the following port at U4001
+1.0~1.4V_MSMC1
+1.15V~+1.4V_MSMP1
+1.8V_MSME
+2.6V_MSMP
+2.6V_MSMA
+2.85V_TCXO
YES
Is the frequency of TCXO_IN
(C4114) 19.2Mhz?
YES
Is TCXO_OUT (C4136)
19.2Mhz, Pk-Pk 2.85V?
YES
Is SLEEP_CLK (C4042)
32.76Khz, Pk-Pk 2.6V?
YES
A
Checking Flow
Checking Flow
Charge of Change Battery and try again
NO
NO
NO
NO
Replace TCXO BUFFER (U4006)
NO
Replace Sleep Crystal (U4000)
NO
Confirm +VBATT Line
Replace PMIC (U4001)
Replace TCXO (U1003)
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