Instruction manual

The Procedures

Reseat flash memory.

4. Power on the printer.

If black squares appear on the LCD, the flash memory could be

blank. Replace the flash SIMM in J11 with a new flash SIMM with the

boot program installed.

5. Power on the printer.

If black squares appear on the LCD, replace the CMX controller

board. Record the message and return it with defective CMX board. If

the LCD displays characters correctly, download the emulation

software again (page 130).

BUFFER OVERRUN Message

1. The print buffer has overflowed on a serial interface. The printed output

may contain random * (asterisk) characters. Make a configuration

printout. Verify that the printer matches the host serial interface

configuration settings for Data Protocol, Baud Rate, Data Bits, Stop Bits,

Parity, Data Terminal Ready, and Request to Send.

Set printer serial interface parameters to match those of the host.

2. Send a print job to the printer.

If the message appears, go to Communications Failures, page 88.

Characters or dots are missing, smeared, too light, or too

dark

1. Check the forms thickness lever: if it is set too loose or too tightly print

quality can be affected.

Set the forms thickness lever to match the thickness of the paper

being used.

2. Check the paper tension between the tractors.

Adjust the right tractor so that it does not pull paper too tightly or

leave it too loose. The right tractor should hold the paper under

“slight” tension.

3. Inspect the shuttle frame assembly for print chaff, debris, or ink residue

that could be causing the problem.

Clean the shuttle frame assembly.

4. Check the ribbon for folds or tears. Check that the ribbon guides are tight

and the ribbon tracks straight across them.

Rewind or install new ribbon. If the ribbon does not track straight

across the ribbon guides, adjust the ribbon guides. If the ribbon

guides are loose, tighten them. If the ribbon guides are damaged,

replace them.

5. Power off the printer. Remove the shuttle cover. Remove the shuttle

frame assembly. Inspect the ribbon mask for bends or deformation that

adversely affect paper feeding. Make sure the hammer bank cover

assembly is correctly installed on its mounting pegs. Check the shuttle