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SLM-3650 Satellite Modem
Maintenance
COMMON EQUIP FAULTS
BATTERY/CLOCK
-12V POWER SUPPLY
+12V POWER SUPPLY
+5V SUPPLY
SELF TEST
CONTROLLER
INTERFACE MODULE
BACKWARD ALARMS
(IDR OVERHEAD ONLY)
BW ALARM RX #4
BW ALARM RX #3
BW ALARM RX #2
BW ALARM RX #1
BW ALARM TX #4
BW ALARM TX #3
BW ALARM TX #2
BW ALARM TX #1
Test Note
1
2
3
4
5
6
7
8
*
IDR only.
**
IBS only.
***
D&I only.
****
A connection between the common and N.O. contacts indicate no fault/alarm.
*****
Signal is open collector high impedance if faulted.
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Table 5-2. SLM-3650 Fault Tree (Continued)
T
T
T
R
R
C
C
X
X
X
X
X
O
O
M
M
I
F
F
F
F
F
A
A
A
A
E
E
U
U
U
U
Q
Q
O
L
L
L
L
U
T
T
T
T
F
F
T
A
A
P
L
R
L
R
U
U
U
E
E
E
E
L
L
T
D
L
D
L
T
T
A
A
O
Y
Y
L
R
F
E
E
F
D
L
A
Y
(1)
(2)
(3)
X
X
X
X
X
X
X
X
X
X
X
X
Legend
Fault/Alarm Relay
TX FAULT
RX FAULT
COM EQ FAULT
TX ALARM #2
RX ALARM #3
PRIMARY ALARM
SECONDARY ALARM
DEF MAINT ALARM
5–11
T
T
R
R
S
P
S
X
X
X
X
P
R
E
A
I
C
A
A
A
A
R
M
O
L
L
L
L
E
A
N
A
A
A
A
R
D
R
R
R
R
R
Y
A
M
M
M
M
E
R
L
A
Y
L
R
L
R
A
L
E
E
E
E
Y
A
A
D
L
D
L
R
L
A
A
A
M
A
Y
Y
L
R
A
R
M
#
#
R
E
2
3
M
L
R
A
E
#
Y
L
1
A
Y
(4)
(5)
(6)
(7)
**
**
***
***
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Test Points Connector/Pins
Pin 4 (NO), 5 (COM), 6 (NC) ****
Pin 7 (NO), 8 (COM), 9 (NC) ****
Pin 1 (NO), 2 (COM), 3 (NC) ****
Pin 4 (NO), 5 (COM), 6 (NC) ****
Pin 7 (NO), 8 (COM), 9 (NC) ****
Pin 43 (NO), 10 (COM), 27 (NC) ****
Pin 44 (NO), 11 (COM), 28 (NC) ****
Pin 17 *****
Revision 3
MN/SLM3650.IOM
I
D
T
R
D
B
E
X
X
&
S
F
I
E
A
A
B
R
I
I
T
A
R
S
S
E
C
E
R
K
D
R
W
A
M
B
R
A
W
D
I
A
N
A
L
A
A
L
R
A
M
R
M
(8)
**
*
*
*
***
***
**
**
***
***
X
X
X
X
X
X
X
X
X
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