Specifications

7193 Service Guide Chapter 4: Troubleshooting
August 1998 35
Operating Problems
The tables in this section aid in determining the cause of printer malfunctions and provide
a list of steps to follow to correct each problem. The steps in the “What to do” column
progress from correcting the most likely cause to correcting the least likely cause of the
problem. The tables are grouped according to the following types of problems:
• Operating
• Printing
• Electronic
• Messages
Problem Possible Causes What To Do
Printer Does Not Function
When Turned On
Printer not plugged in. Check that printer cables are properly connected
on both ends. Make sure the ground wire is
properly connected.
Check that the host or power supply is getting
power.
Receipt cover not fully closed. Close and latch the receipt cover.
Cables within the printer are
improperly connected to the PC
board.
Make sure the cables in the printer are properly
connected to the PC board.
ROM improperly positioned. Check that the ROM is properly positioned.
DIP switches not set correctly. Check the switch settings.
Improper power ground or
voltage supply.
Check that the ground strap connecting the L
Cover and PC board is properly connected.
Failed PC Board. Replace the PC Board.
Problem Possible Causes What To Do
Printer Cycles But Does Not
Print
Cable connecting the printhead
to the PC board is not properly
connected.
Check the cable connection to the printhead and to
the PC board.