Lexmark 2380 Service Manual - Page 58

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: 238X-001 Thermal Slowdown No 239X-001 Yes 238X-002 No 238X-003 239X-002 Yes 239X-003 Forms Thickness Slowdown 26% speed reduction at Forms Thickness 7. Head Gap Sensor contains one switch. No Forms Thickness speed reduction. No Head Gap Sensor. Reduced print wire force at Forms Thickness 1. 23% speed reduction at Forms Thickness 4 through 7. Head Gap Sensor Assembly contains two switches. Reduced print wire force at Forms Thickness 1. 20% speed reductions at Forms Thickness 4 through 7. Head Gap Sensor Assembly contains two switches. 2-34