Lexmark 2380-001, Service Manual

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Print Speed Service Check
Reduced speed while printing the top 2 inch (51 mm) of a job is
normal; for Model 003 printers, the slow down can be eliminated by
entering Setup Mode and disabling TOF Read. The speed of the
23XX printers varies with the font, forms thickness setting and
printhead temperature. Graphics output may print slowly due to data
throughput limitations. Thermal sensing is built into the printhead on
239X printers and protects the printhead from overheating.
Depending on the job content, thermal slowdown may occur after 5
to 10 minutes of continuous operation on 239X-001 printers and
after 10 to 20 minutes on 239X-002, 003 printers.
Print slowdown modes are as follows:
Thermal
Slowdown
Forms Thickness Slowdown
238X-001 No 26% speed reduction at Forms
Thickness 7.
Head Gap Sensor contains one
switch.
239X-001 Yes No Forms Thickness speed
reduction.
No Head Gap Sensor.
238X-002
238X-003 No Reduced print wire force at Forms
Thickness 1.
23% speed reduction at Forms
Thickness 4 through 7.
Head Gap Sensor Assembly contains
two switches.
239X-002
239X-003 Yes Reduced print wire force at Forms
Thickness 1.
20% speed reductions at Forms
Thickness 4 through 7.
Head Gap Sensor Assembly contains
two switches.