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Flow Chart of Troubleshooting
10-
25
10-2-6. PCS Transmitter
F100
pin 4 : 2.9V
CONTINUS TX ON
CONDITION
MS TX level 12
CH : 660
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
UCP301
check &
change
2
NO
NO
YES
PAM100 pin14
3~6dBm?
YES
F100,C102
check & change
NO
1
PAM100/L111
check & change
YES
3
PAM100 pin 5 : 3.7V
NO
BATTERY, BATTERY CONNECTOR
check & change
4
YES
PAM100 pin3 : 'HIGH'
NO
5
UCP301
check & change
YES
6
UCP301
check & change
PAM100
pin1: 'HIGH'
NO
YES
PAM100
pin 6 : 1.2V
?
NO
YES
NO
PAM100 pin
2
: -5dBm?
YES
PAM100
change&resolder
7
UCD100
pin40 :
7~11
dBm?
UCD100
pin21 13MHz
Vp-p :950mV
UCD100
change or
resolder
UCD100
pin35,36,3
7,38:1.7V
UCD100
check &
change
C107
change or resolder
TCX101
pin 3 : 13MHz
Vp-p : 950mV
TCX101
pin 4 : 2.9V ?
UCD100
change or resolder
UCP301
change or resolder
UCD100
change or
resolder
NO
NO
NO
YES
NO
YES
YES
NO
YES
YES
NO
8
UCP301
change
9
10
11
14
12
13
F100 pin 6
about
2~5dBm?