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Troubleshooting
Board-Level Connection Diagrams
Board-Level
Connection Diagrams
EXPANSION I/O
EXPANSION RS485
ANALOG OUTPUTS
/DIGITAL INPUTS
6-8
Model 146i Instruction Manual
Figure 6-1
common electronics and measurement system. These illustrations can be
used along with the connector pin descriptions in
Table 6-10
I/O E XP ANSIO N
BO AR D
J1
25 Pin
D IG ITAL O U TP U T
BO AR D
J2
DIGITAL
37 Pin
OUTPUTS
RS232/RS485
P1:A
9 Pin
RS232/RS485
P1:B
9 Pin
10-BASE-T
J2
8 Pin
J15
15 Pin
J5
37 Pin
PJ1
REAR PANEL
AC
AC INPUT
3 Cond
FRONT PANEL
POWER SW
Figure 6-1. Board-Level Connection Diagram - Common Electronics
and
Figure 6-2
are board-level connection diagrams for the
to troubleshoot board-level faults.
11 Pin
8 Pin
J14
J3
J18
34 Pin
MO THE R BO AR D
J4
8 Pin
J1
3 Pin
J10
2 Pin
J17
2 Pin
PJ3
PJ2
3 Pin
3 Pin
3 Pin
Table 6-3
TO ME ASU R E ME NT SY STE M
J2
F R O NT
16 Pin
P ANE L
J1
J4
BO AR D
4 Pin
J3
8 Pin
SPARE DATA
DATA
POWER_GOOD
24V D C
P O W E R SU P P LY
AC
TR ANSF O R ME R
(90V AC or 240V AC
O P TIO NS)
through
LCD
DISPLAY
KEY PANEL
IPJ8
3 Pin
24VDC
P1
2 Pin
AC
PJ6
3 Pin
Thermo Fisher Scientific
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Troubleshooting
