Samsung SGH-D800 Service Manual page 25

2-2-2. DCS RX
NORMAL CONDITION
catch the channel?
Pin1 ≥ -65dBm ?
Pin12, 13 ≥ -65dBm ?
Pin4, 5 ≥ -65dBm ?
Pin1, 31, 48 : 2.9V ?
Pin35 : 26Mhz?
Vp-p : 950mV?
Pin25, 26, 27, 28
Vp-p : 120mV?
U101
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Yes
F400 Check
Yes
F400 Check
Yes
U403 Check
Yes
U403
Yes
U403 Check
Yes
U403 Check
Yes
CHECK!!
SAMSUNG Proprietary-Contents may change without notice
SGH-D800 Flow Chart of Troubleshooting
No
CHECK
ANT401, R406contact?
No
C418, CN400
resolder or change
No
F400
resolder or change
No
C426, C427,
resolder or change
No
U101 pin A13, B10, C113,
resolder or change
No
OSC400
resolder or change
No
U403
resolder or change
2-21
L403
C115