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Flow Chart of Troubleshooting
10-24
10-2-5. DCS Transmitter
U102
pin 2 : 2.8V
U300
check &
change
2
NO
NO
YES
PAM101 pin14
3~4dBm?
YES
U102,C101
check & change
NO
1
PAM101/R126
check & change
YES
3
PAM101 pin 4 : 3.7V
NO
BATTERY, BATTERY CONNECTOR
check & change
4
YES
PAM101 pin 3 : 'HIGH'
NO
5
U300
check & change
YES
6
U300
check & change
PAM101
pin 1: 'HIGH'
NO
YES
PAM101
pin 6 : 1.2V
?
NO
YES
NO
PAM101 pin
14
: -5dBm?
YES
PAM101
change&resolder
7
U100
pin40 :
7~11
dBm?
U100
pin21 13MHz
Vp-p :950mV
U100
change or
resolder
U100
pin35,36,37,3
8 = 1.7V
U100
check &
change
C135
change or resolder
TCX101
pin 3 : 13MHz
Vp-p : 950mV
TCX101
change or resolder
U100
change or
resolder
NO
NO
NO
YES
YES
YES
NO
YES
NO
8
U300
change
9
10
11
12
U102 pin 6
about
2~3dBm?
CONTINUS TX ON
CONDITION
MS TX level 12
CH : 698
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB