Thermo Scientific 146i Instruction Manual page 174

Troubleshooting
Connector Pin Descriptions
6-12 Model 146i Instruction Manual
Table 6-3. Motherboard Connector Pin Descriptions, continued
Connector Reference
Label Designator
SER EN J7
24V IN J10
DIGITAL I/O J14
Pin Signal
Description
12 TTL Input 15
13 Ground
14 Analog Voltage Output 1
15 Analog Voltage Output 3
16 Ground
17 Analog Voltage Output 5
18 Ground
19 Ground
20 Power Fail Relay COM
21 Power Fail Relay N.O. Contact
22 Ground
23 TTL Input 3
24 TTL Input 4
25 TTL Input 6
26 Ground
27 TTL Input 9
28 TTL Input 11
29 TTL Input 12
30 TTL Input 14
31 TTL Input 16
32 Ground
33 Analog Voltage Output 2
34 Analog Voltage Output 4
35 Ground
36 Analog Voltage Output 6
37 Ground
1 Serial Enable Jumper
2 +3.3V
1 +24V
2 Ground
1 +5V
2 +24V
3 +24V
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