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SGH-E810 Flow Chart of Troubleshooting
9. DCS Receiver
Continuous RX ON
RF Input : 660 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
U401 Check
Pin #8 ≥ -65dBm ?
YES
U401 Check
Pin #1 ≥ -65dBm ?
YES
U402 Check
Pin #1 ≥ -65dBm ?
YES
U404 Check
Pin#18,19 ≥ -65dBm ?
YES
U404 Check
Pin#9,32=Clean 2.8V?
YES
U404 Check
Pin#28,1,2,3=100mV?
YES
Check U300
NO
NO
NO
NO
NO
NO
NO
U404 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
YES
U404
Change or resolder
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Check soldered status of
R400, C401
CN400
Resolder or Change
U401 Resolder or Change
Check soldered status of
C415
Check soldered status of
C414, 416, L404, U402
U100,C107,C109
Check or resolder
NO
OSC400 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
YES
R412,C426
resolder
2-10
NO
OSC400 Check
Pin #4 = 2.8V ?
YES
OSC400
Change or resolder
NO
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