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3. TROUBLE SHOOTING
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Only for training and service purposes
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Check TP1(C1102) at U1102
Check if there is any major difference referring
To Figure 3.1.1(b). Is any signal detected at that
point?
Check TP2(C1608) at FL1600
Check if there is any major difference referring
To Figure 3.1.1(c). Is any signal detected at that
point?
Is any signal detected at
that point?
Check TP3(C1123),TP4(C1124), TP5(C1119),
TP6(C1120) at U1102. Is any DC signal detected
at that points?
START
TX module is OK. See next page to check DPX
Replace U1102
Check C1101,C1102
Check L109
The Problem may be Logic part
Refer to Logic troubleshoot
Yes
Yes
Yes
Yes
No
No
No
No
3.1.1.3 Checking RF signal path (TX Module)