Transceiver Dc Power Supply Circuit Block - LG -K430DSF Service Manual

3.2 Checking Transceiver DC Power Supply Circuit Block
The MT6169 operating voltages used two voltage sources 1.8V and 2.8V
Checking Flow
START
Check TP1
+2.8V_RF is OK?
YES
Check TP2
+1.8V_RF is OK?
YES
Check next step
Main
Bot
TP1
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The Problem may be
Logic part
NO
Refer to
Logic trouble shoot
The Problem may be
Logic part
NO
Refer to
Logic trouble shoot
TP1
Image
TP2
14
3. TROUBLE SHOOTING
Circuit Diagram
TP2
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