Samsung SGH-P310 - DCS Transmitter

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Flow Chart of Troubleshooting and Circuit Diagrams
9-27
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9-2-5. DCS Transmitter
2
F101 pin 13
about 2~3dBm?
UCP300
check &
change
CONTINUS TX ON CONDITION
MS TX level 12
CH : 698
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
NO
NO
F101
pin 2 : 2.8V
YES
YES
PAM100 pin9
3~4dBm?
1
NO
3
YES
F101 / C140
check & change
PAM100
pin 4 : 3.7V
4
BATTERY, BATTERY CONNECTOR
check & change
NO
YES
PAM100
pin2:'HIGH'
UCP300
check & change
5
NO
YES
PAM100
pin 3
:'HIGH'
UCP300
check & change
6
NO
YES
NO
PAM100
pin 6
:1.2V ?
YES
PAM100 pin 1
:-5dBm?
NO
YES
7
PAM100
change & resolder
13
12
11
10
9
UCP300
change
8
NO
YES
YES
NO
YES
YES
NO
YES
NO
NO
UCD100
change or resolder
UCP300
change or resolder
UCD100
change or resolder
TCX100
pin 4 : 2.8V ?
TCX100
pin 3 : 13MHz
Vp-p : 950mV
UCD100
check & change
UCD100
pin35,36,
37,38=1.7V?
UCD100 change or
resolder
UCD100
pin21 13MHz
Vp-p :950mV
UCD100
pin40 :
7~11dBm?
RFS100,C101R140
check & change