Receipt Printing Is Light Or Spotty - NCR 7197 Owner's Manual

7197 Owner's Manual
Thermal print head temperature
is out of range
Power supply voltage is out of
range

Receipt Printing is Light or Spotty

Problem
Thermal print head may be dirty
The print head may overheat when printing in
a room where the temperature is above the
recommended operating temperature or when
printing high-density graphics continuously,
regardless of the room temperature. In either
case, the printer will shut off.
If the temperature of the print head is too hot,
adjust the room temperature or move the
printer to a cooler location.
If the print head is overheating because of
printing high density graphics continuously,
reduce the demand on the printer.
If the printer continues to overheat, contact a
service representative.
If paper is not low and no conditions indicate
that the print head is too hot, the power
supply voltage is out of range. Contact a
service representative.
What to Do
Open the receipt cover and clean the thermal
print head with cotton swabs and isopropyl
alcohol.
Caution: Do not use the alcohol to clean other
parts of the printer. Damage will occur.
Contact a service representative if this does
not resolve the problem.
Note: The thermal print head does not normally require cleaning if the
recommended paper grades are used. If non-recommended paper has been
used for an extended period of time, cleaning the print head with the
alcohol and cotton swabs will not be of much benefit. See "Ordering
Thermal Paper" in chapter 1 for recommended paper.
See "Environmental
Conditions" in Appendix
A for the recommended
temperature range for
operating the printer.
See "Contacting a Service
Representative" later in
this chapter.
See "Contacting a Service
Representative" later in
this chapter.
Where to Go
See "Cleaning the Printer"
in chapter 2.
See "Contacting a Service
Representative" later in
this chapter.
March 2002
Chapter 3: Solving Problems
41