Cirris Signature 1000M, User Manual

Page: 49 / 66

Section 11: Troubleshooting / Problems with Printing
1000M User’s Guide / page 49
Problem
: Characters missing in printout.
Possible Causes
:
• Bad printer cable.
• Printer cable is too long.
• Printer is incompatible with the analyzer.
• Microprocessor assembly inside the analyzer is bad.
Things to do
:
1. Verify that the printer cable is correctly built. Check for shorts in pin 11.
2. If the printer cable is more than 10 feet long, you may have printing problems.
The electrical signals from the printer become too weak to work well as the cable
gets longer. Use a shorter printer cable.
3. Try using the printer cable with a PC. If it works, the printer probably is not
compatible with the analyzer.
4. If the cable and printer work with a PC, the analyzer’s microprocessor assembly
is probably bad. Call Cirris to replace it.
Problem
: Wrong characters in printout.
Possible Causes
:
• Bad printer cable.
• Bad printer.
• Printer cable too long.
• Microprocessor assembly inside the analyzer is bad.
Things to do
:
1. The printer cable may be bad. Check for shorts, opens, or miswires on pins 2
through 9. Either fix the cable, or replace it with a good cable.
2. The printer may be bad. Try using another printer with the analyzer, or test your
original printer cable and printer with a PC. If the printer does not work with a
PC, the printer is bad. Replace the printer. If the printer and cable do work with
a PC, the analyzer’s microprocessor assembly is probably bad.
3. The printer cable may be too long. Your printer cable should not be longer than
10 feet. The printer signals get too weak to work properly if the cable is longer
than 10 feet.
4. If you have another Cirris 1000M analyzer available, it is possible to exchange
microprocessor assemblies. If using a different microprocessor assembly solves
the problem, the original microprocessor is bad. Call Cirris to replace it.