Table of Contents
System Verification and Troubleshooting
Table 3-3. MPI PCA J3 Pin Connections
1--
1
I
Pin
1
1
I
------------
1
1
3
1
1
5
7
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
------------------------1
Signal
1
. . - -----~-------
I
MCU TRIG
V TRIG
MR
+5 volts (100
source)
REGISTER DISPLAY
a
REGISTER DISPLAY 1
REGISTER DISPLAY 2
REGISTER DISPLAY 3
REGISTER DISPLAY 4
REGISTER DISPLAY 5
REGISTER DISPLAY 6
REGISTER DISPLAY 7
REGISTER DISPLAY 8
REGISTER DISPLAY
9
REGISTER DISPLAY 10
REGISTER DISPLAY 11
REGISTER DISPLAY 12
REGISTER DISPLAY 13
REGISTER DISPLAY 14
REGISTER DISPLAY 15
1-------------
-------~~-.-------------------------
1
Note: All even-numbered pins are ground.
I_~
-
~
. .
~-_
. . _ _-
-_-
- __. .
_
b.
At the MPI PCA, set sw itch Sl
to
the
LAMP
TEST
pos i tion.
Every lamp on the Maintenance Panel should light.
c.
Set Sl to the SWITCH TEST position. Some lamps should go out.
I
CAUTION
I
Before performing step d
below,
be
sure
Sl
has been set to the SWITCH
TEST
position.
Otherwise,
switch
information
may
enter the computer
system.
The switch
information
is
the
result
of
voltage spikes pro-
duced when the plug is removed
from
Jl.
3-27
Chapters
Table of Contents
Troubleshooting
