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4. TROUBLE SHOOTING
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Only for training and service purposes
CHECKING FLOW
Check TP2& TP3
Mobile SW & RF Module is OK.
Yes
SW400 signal
same as TP4?
Replace SW400
No
Yes
Replace PMB8815 (U100)
TP2(High Band),
TP3(Low Band)
Signal is OK ?
No
Yes
Check PMB8815
Control Signal is
(TP5, TP6, TP8,
TP9)OK ?
No
Yes
Yes
Check TP4 of U400 ?
TP1 Signal is OK?
Replace RF Module (U400)
No
Low Band(850/900) Tx