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Thermo Fisher Scientific
Table 6-3. Motherboard Connector Pin Descriptions, continued
Connector
Reference
Label
Designator
RS232/RS485:B
P1:B
AC IN
PJ1
AC 24VPWR
PJ2
AC INTF BD
PJ3
Table 6-4. Front Panel Board Connector Pin Diagram
Connector
Reference
Label
Designator
MOTHER
J1
BOARD
Pin
Signal
Description
7
Serial Port 1 RTS (+RS485 OUT)
8
Serial Port 1 CTS (+RS485 IN)
9
NC
1
NC
2
Serial Port 2 RX (-RS485 IN)
3
Serial Port 2 TX (-RS485 OUT)
4
NC
5
Ground
6
NC
7
Serial Port 2 RTS (+RS485 OUT)
8
Serial Port 2 CTS (+RS485 IN)
9
NC
1
AC-HOT
2
AC-NEUT
3
AC-Ground
1
AC-HOT
2
AC-NEUT
3
AC-Ground
1
AC-HOT
2
AC-NEUT
3
AC-Ground
Pin
Signal
Description
1
Ground
2
Ground
3
LCLK – LCD Signal
4
Ground
5
Ground
6
LLP – LCD Signal
Model 146i Instruction Manual
Troubleshooting
Connector Pin Descriptions
6-15
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Troubleshooting
