Connector Pin Descriptions; Table 6-5. Motherboard Connector Pin Descriptions - Thermo Scientific 43i Instruction Manual

Troubleshooting

Connector Pin Descriptions

Connector Pin
Descriptions
6-12 Model 43i Trace Level-Enhanced Instruction Manual
The connector pin descriptions in Table 6–5 through Table 6–12 can be
used along with the board-level connection diagrams to troubleshoot
board-level faults.
Table 6–5. Motherboard Connector Pin Descriptions
Connector Label Reference Designator
INTF DATA J1
10-BASE-T J2
EXPANSION BD J3
SPARE DATA J4
I/O J5
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
4 TTL Input 2
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