User Guide

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