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SECTION 6.
TROUBLESHOOTING
This section has been devised to help you if you are unable to produce output on the
CL Series printers. Use this section to make sure the basics have been checked before
deciding you are unable to proceed any further. The section is divided into three
parts:
• Initial Checklist
• Centronics Parallel Interface
• RS232C Serial Interface
INITIAL CHECKLIST
1. Is the printer powered up and ON-LINE?
2. Do any of the Front Panel LEDs indicate an error condition? If this light is
ON, it may mean the print head assembly is open.
3. Is the Print Head (and the Label Hold-Down on the CL608/CL612) in
the down and latched position.
USING THE CENTRONICS (PARALLEL) INTERFACE
1. Is the IBM parallel printer cable connected securely to your parallel port
(DB-25S Female) on the PC and to the Centronics connector on the
printer?
WARNING: Never connect or disconnect interface cables (or use a switch box)
with power applied to either the printer or the host. This may cause damage
to the interface circuitry and is not covered by warranty.
2. Is there more than one parallel interface port on your PC (LPT1, LPT2,
etc.)? If so, make sure you are sending data out the correct port.
3. When you send the print job to the printer, and it does not respond, do you
get an error message on your PC that says “Device Fault” or something
similar?
This may mean that the computer doesn’t know the printer is there. Verify
that:
a. Both ends of the cable are securely inserted into their respective connectors.
b. The printer is ON-LINE.
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