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Section 2 – Trouble Shooting
This section is arranged by first the condition that might occur, and then by possible problems,
their cause and recommended solutions.
Power Problems
CONDITION
Power is on, nothing happens.
Interface Communication Problems
CONDITION
Printer does not respond to
software.
Printer not responding to
software
LCD Display Problems
CONDITION
No LCD display
PROBLEM
No power to printer
Check that the power cord is plugged in.
Check that the power outlet is live.
Check the fuse in the main power switch.
Replace with a fuse of the same rating.
Check the fuses on the power supply PC Board.
(Requires disassembly)
Bad controller PC Board.
Bad power supply.
PROBLEM
Connection problems.
Poor connection between printer
and computer
PROBLEM
Power not on
Contrast pot broken or
maladjusted
Broken solder joint on contrast
pot
TROUBLE SHOOTING
SOLUTION
SOLUTION
Check that the port is
communicating with printer by
using another parallel or USB
cable, replace cable.
If port cannot communicate using
another parallel or USB cable,
check printer.
If port cannot communicate using
another parallel or USB cable
and the printer is OK, check
parallel or USB port.
Check cable connection to see if
any of the pins are bent or
missing. If so replace cable.
Turn printer off and on again.
Check connections.
SOLUTION
Turn power switch on. If still no
display see Power Problems
Adjust pot or replace display PC
Board.
Repair or replace the display PC
Board.
SECTION 2
7
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