
Flow Chart of Troubleshooting
9-
25
9-2-6. PCS Transmitter
F100
pin 9 : 2.8V
U300
check &
change
2
NO
NO
YES
PAM101 pin9
3~4dBm?
YES
F100,C102
check & change
NO
1
PAM101/R118,R119
check & change
YES
3
PAM101 pin 4 : 3.7V
NO
BATTERY, BATTERY CONNECTOR
check & change
4
YES
PAM101 pin 2 : 'HIGH'
NO
5
U300
check & change
YES
6
U300
check & change
PAM101
pin 3: 'HIGH'
NO
YES
PAM101
pin 20 :
1.2V ?
NO
YES
NO
PAM101 pin
1
: -5dBm?
YES
PAM101
change&resolder
7
U103
pin22 :
7~11
dBm?
U103
pin8 13MHz
Vp-p :950mV
U103
change or
resolder
U103
pin4,5,6,7
1.7V
U103
check &
change
C121
change or resolder
TCX100
pin 3 : 13MHz
Vp-p : 950mV
TCX100
pin 4 : 2.8V ?
U103
change or resolder
U300
change or resolder
U103
change or
resolder
NO
NO
NO
YES
NO
YES
YES
NO
YES
YES
NO
8
U300
change
9
10
11
14
12
13
F100 pin 13
about
2~3dBm?
CONTINUS TX ON
CONDITION
MS TX level 12
CH : 660
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Summary of Contents for SGH-X810
Page 54: ...PCB Diagrams 8 4 ...
Page 56: ...Flow Chart of Troubleshooting 9 2 ...
Page 67: ...Flow Chart of Troubleshooting 9 13 ...
Page 76: ...Flow Chart of Troubleshooting 9 22 ...
Page 80: ...Flow Chart of Troubleshooting 9 26 ...