LG -D100F Service Manual page 52

3.3.1.3 Checking RF signal path (PAM)
START
Check TP1(C1104) 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 at U1100
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?
PAM is OK. See next page to check DPX
LGE Internal Use Only
No
Yes
No
Yes
No
Yes
- 52 -
3. TROUBLE SHOOTING
Check anything
Is any DC signal detected at that points?
Yes
Replace U1100
Check anything
The Problem may be Logic part
Refer to Logic troubleshoot
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
No