Intermec EasyCoder PF4i Service Manual

230 Intermec EasyCoder PF2i, PF4i, and PF4i Compact Industrial—Service Manual
Chapter 15—Troubleshooting
Description:
Weak or missing printout of some dots.
Possible Causes and Suggested Remedies:
• Dirty printhead or platen roller.
- Examine the printhead and the platen roller for dust, adhesive
residue, or visible damage.
- Clean or replace.
• One or two missing dots.
- May be due to mechanical damage to the printhead. Try to establish
why such damage have occurred in order to prevent future failures of
this kind. (Hard foreign particles, electrostatic discharge?)
- If the printer has been used for printing on less than full width labels
for some time, the platen roller and possibly also the printhead may
have become worn from the outer edge of the media. This will show
up when reverting to wider labels. Change the platen roller and
possibly also the printhead.
• Preprinted ink has got stuck to the dot line.
- Avoid preprinted labels with ink that has a low melting point (less
than +225°C/+437°F).
• Many dots, or a block of dots, are missing.
- The internal IC circuit of the printhead is probably damaged. Replace
the printhead.
Description:
Unexpected black printout (completely or partially).
Possible Causes and Suggested Remedies:
• Wrong printhead voltage.
- If the printer unexpectedly produces completely or partially black
printout, or prints a black line across the media at startup (regardless
of label layout), check that the printhead voltage +24VDC ±2V
(see Chapter 13.4). If the power on the CPU board is OK, but the
trouble remains, disconnect the power cable on the inner side of the
printhead and use probes to measure the voltage during printing
between two adjacent lines in the socket (see Chapter 12.4, connector
P5 for schematics). If too high, in the range of 40 to 50V during
printing, replace the power supply unit.
- The printhead is most certainly damaged too and will also need to be
replaced.

Intermec EasyCoder PF4i Specifications

General

Print technology	Direct thermal
Maximum resolution	203 x 203 DPI
Standard interfaces	RS-232, USB 2.0
Internal memory	16 MB
Power consumption (standby)	15 W
Power consumption (printing)	300 W
Media thickness	3/7.5 mm
Maximum label width	104 mm
Maximum label length	0.4 m
Maximum roll diameter	152.4 /213 mm
Maximum internal memory	1 GB
Supported network protocols	TCP/IP, LPR/LPD, FTP, BOOTP, DHCP, HTTP, SNMPv3, SMTP, SNMP-MIB II
Product color	Blue, Silver
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	40 - 104 °F
Operating relative humidity (H-H)	20 - 80 %

Weight and Dimensions

Depth	405 mm
Width	244 mm
Height	178 mm
Weight	8000 g