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3. TROUBLE SHOOTING
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3.2.2.5 Checking RF signal path (TX Module)
Check TP1(C1101) at U1100
Check if there is any major difference referring
To Figure 3.1.1(b). Is any signal detected at that
point?
Check TP2(C1638) at FL1601
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 U1100. Is any DC signal detected
at that points?
START
TX module is OK. See next page to check DPX
Replace U1100
Check L1101,C1100, L1142, SW1100
Check C1638
The Problem may be Logic part
Refer to Logic troubleshoot
Yes
Yes
Yes
Yes
No
No
No
No