LG CU920 Manual page 135

CHECK M_FLO RSSI
<277634#*# 4 5>
Does it read RSSI level?
YES
CHECK M_FLO RF PATH
R950 Detected signal?
YES
CHECK M_FLO RF PATH
R905 L900 Detected
signal?
YES
CHECK C909
RBR1000 VCO WAVEFORM IS
NORMAL?
YES
SOFT REDOWNLOAD
AND CHANGE BOARD
only CU920
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
NO
CHECK CN803
NO
CHANGE M_FLO
COAXIAL CABLE
Signal level is about -51dBm
NO
CHANGE FL900
Signal level is about -53dBm
NO
CHANGE
RBR1000
- 137 -
4. TROUBLE SHOOTING
CN803
C909
L900
R905
FL900
R950
abnormal
normal
LGE Internal Use Only