Kb770 ) - LG KB770 Service Manual

4. TROUBLE SHOOTING
KB770 DVB-T/H CHECKING FLOW
LGE Internal Use Only
Go into the
Broadcasting Mode
Check the Antenna
contact point
YES
1.08V<TP1 <1.32V
2.34V<TP2 <2.86V
1.62V<TP3 <1.98V
0.9V<TP4 <1.1V
YES
TP5
12MHz?
YES
TP6
30MHz?
YES
Replace U705
- 128 -
NO Check DVB-H Antenna
or replace Antenna
NO
Check the LDO, DC-DC &
replace not working LDO,
DC-DC
NO
Replace X600
NO
Replace X700
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