3. TROUBLE SHOOTING
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Check TP1(L104) at U102
Check if there is any major dierence referring
To Figure 3.1.1(b). Is any signal detected at that
point?
Check TP2 at U102
Check if there is any major dierence referring
To Figure 3.1.1(c). Is any signal detected at that
point?
Is any signal detected at
that point?
Check TP3(R103),TP4(R104),TP5(R105),
at U102. Is any DC signal detected
at that points?
START
PAM is OK. See next page to check DPX
Replace U102
Check anything
Check anything
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(PAM)
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