Table 5-8. Troubleshooting Guide - Honeywell Chadwick-Helmuth 8500C Maintenance Manual

Problem
"EXCEPTION ERROR"
NOTE: This type of error can also be
caused by a problem with software
currently running in the unit. If a
chart or other program was running at
the time of the failure, it should be
suspect and the problem reported to
Chadwick-Helmuth.
NOTE: The error codes displayed on
the 8500C/C+ are Motorola 68000
assembly language error codes.
Pressing PRINT causes "EXCEPTION
ERROR."

Table 5-8. Troubleshooting Guide

8500C/C+ Balancer/Analyzer
1. Write down all information displayed on
2. To try to preserve the contents of the
3. Power down 8500C/C+. After ten seconds,
4. Verify that EPROM's (Figure 5-15) and S-
5. Verify that keyboard connection
6. Check 8500C/C+ harness assembly
7. Digital board is most likely at fault. Replace
1. Cold-start the 8500C/C+ in accordance with
2. Remove analog board (Figure 5-17, A2).
3. Go back and perform "EXCEPTION
Solution
NOTE: If the exception error is
caused by pressing the PRINT key,
skip ahead to the troubleshooting
procedure for this situation.
8500C/C+.
8500C/C+'s memory, simply power down
the 8500C/C+, wait 10 seconds, and turn
power back on.
hold down START key and turn power
back on (this erases all memory in 8500C/
C+).
RAM (U10) (Only the 8500C has S-RAM)
are plugged correctly into digital board.
Check for bent pins, etc.
(Figure 5-19, Sheet 2, P4/J4) is correct.
(Figure 5-19) for shorted or open
connections which can be caused by loose
or pinched wires, unplugged connector, or
worn-through insulation.
digital board (Figure 5-17, A1).
Section 3.3, "8500C/C+ COLD-START
PROCEDURE."
Wait at least 5 minutes, and reinstall analog
board.
ERROR" steps.
8500C/8500C+ System Maintenance Manual 5-31
Troubleshooting Guide