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Thermo Fisher Scientific
Table 6-3. Motherboard Connector Pin Descriptions, continued
Connector
Reference
Label
Designator
EXT. RS485
J15
24V MONITOR
J17
FRONT PANEL
J18
BD
Pin
Signal
Description
4
Ground
5
Ground
6
Ground
7
SPI Reset
8
SPI Input
9
SPI Output
10
SPI Board Select
11
SPI Clock
1
-RS485 to Rear Panel
2
+RS485 to Rear Panel
3
+5V
4
+5V
5
+5V
6
Ground
7
Ground
8
Ground
9
NC
10
NC
11
+24V
12
+24V
13
+24V
14
+24V
15
+24V
1
24V Power Monitor
2
Ground
1
Ground
2
Ground
3
LCLK – LCD Signal
4
Ground
5
Ground
6
LLP – LCD Signal
7
LFLM – LCD Signal
Model 146i Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-13
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Troubleshooting
