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Chapter 5: Troubleshooting
B780 Two-Color Thermal/Impact Hybrid Printer: User Guide
B780 UG00001 B 10/06
Status Indications for both B780 printers
The on-line, paper status, error light is the light to the
rear, on the top edge of the printer. It may be the first
indication that something is wrong.
The light closer to the front on the right edge of the
printer indicates that a form is inserted properly. It does
not indicate an error.
For some unexpected conditions, the printer
communicates the information to the host computer
and relies on the application to tell the user that the
printer has a problem.
The following pages describe common conditions that
you could encounter and easily fix yourself. A few may
require that you contact a service representative. See
“Contacting a service representative” on page 46.
Typical Remedy Procedure
If an unexpected condition has occurred, take the
following general steps:
Cycle the power of the printer and note its behavior.
Check the on-line, paper status, error light and
compare the indications to the following table.
Test the receipt printer or slip printer as described
on page 22.
Determine if the condition is with the thermal
receipt printer or the impact slip printer and refer to
the tables
on the following pages.
1.
2.
3.
4.
On-line light indications
Printer status
Off
No power
Fast blink
Firmware download
Fast blink
Level 0 diagnostics:
Occurs at power on and
on reset
Fast blink
Cover open, receipt or
slip
Paper out
Carriage jam
Slip jam
Knife jam
Slow blink
Paper low
Temperature error
Voltage error
Steady On
All other states
The simple design of B780 requires virtually no periodic servicing. However, if problems do occur, they can usually
be diagnosed readily by checking the light status indicators, below, then referring to appropriate section of the
Troubleshooting guide on the following pages.
Chapter 5: Troubleshooting
Status indicators for both B780 Printers
Receipt Cover
Reset Button
Front Cover
Receipt
Slip or check
On-line,
Paper status,
Error Light
(green)
Paper Feed Button
Slip in Light (green)
1
3
2
4
Summary of Contents for Color POS B780
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