Maintenance Manual

Maintenance Manual
11
3.5 ATV Module
NONE
3.6 WIFI Module
NONE
3.7 RF Module
RF Module, type HS8269L, item U101
Figure 3.7.1 RF Front-end Module
RF PA is the probability of the most original failure, common faults include: no network, no
signal, the signal is weak, only dial emergency calls, etc.
Step 1. whether GSM antenna is correctly placed according to guide;
Step 2. whether SMD peripheral component of RF PA is correct, not damaged and missing;
Step 3. whether PCB route is connecting;;
Step 5. whether PA IC U101 SMD is OK;
Step 4. whether IC U200 is damaged.