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Troubleshooting
Connector Pin Descriptions
Connector Pin
Descriptions
6-8
Model 49i Instruction Manual
The connector pin descriptions in
along with the board-level connection diagrams to troubleshoot board-level
faults.
Table 6-3. Motherboard Connector Pin Descriptions
Connector
Reference
Label
Designator
INTF DATA
J1
10-BASE-T
J2
EXPANSION BD
J3
SPARE DATA
J4
I/O
J5
Table 6-3
through
Table 6-9
Pin
Signal
Description
1
Ground
2
+RS485 to Interface Board
3
-RS485 to Interface Board
1
Ethernet Output (+)
2
Ethernet Output (-)
3
Ethernet Input (+)
4
NC
5
NC
6
Ethernet Input (-)
7
NC
8
NC
1
+5V
2
+24V
3
+24V
4
Ground
5
Ground
6
Ground
7
+RS485 to Expansion Board
8
-RS485 to Expansion Board
1
+5V
2
+24V
3
+24V
4
Ground
5
Ground
6
Ground
7
+RS485 to Spare Board
8
-RS485 to Spare Board
1
Power Fail Relay N.C. Contact
2
Ground
3
TTL Input 1
can be used
Thermo Fisher Scientific
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Troubleshooting
