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Lexmark C750 Service Manual - Page 267

Lexmark C750 Manual

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5060-00x Rear roll Reach around and depress the latch (A) on the side of the shaft and remove the tire. Installation notes: • Replace both rollers at the same time. • When you replace the front roller, make sure the roller is pressed against the shaft and the screw is fastened all the way down. • When replacing both the front and back rollers, note the directional markings on the rollers and make sure • the same narrow hub caps are facing each other. Check to see if the rollers turn freely. The autocompensator pick rolls are located in the base machine. There are also rollers in all tray options. If you have additional trays beneath your printer, check the condition of these rollers when you replace the rollers in your printer. Repair information 4-49

Section	Page
Table of contents	3
Notices and safety information	11
Laser notice	11
Safety information	17
Preface	20
Definitions	20
1. General information	21
Tools required for service	21
Options and features	22
High performance	22
Print quality	22
Heavy volume reliability	22
Automatic calibration	22
Resolution	23
Toner darkness	23
Printer specifications	23
Dimensions	23
Power and electrical specifications	23
Electrical specifications	24
Operating clearances	24
Fuser web oiler upgrade kit and replacements	24
Upgrade kit	24
Replacements	24
Acoustics	25
Environment	25
Print speed and performance print speed	26
Performance	26
Time to first print	26
Processor	26
Duty cycle	26
Memory configuration	27
Available memory options	27
Media specifications	27
Acronyms	33
2. Diagnostic information	35
Start	35
POR (power-on reset) sequence	36
Symptom tables	37
Symptom table-base printer	37
Symptom table-500-sheet drawer option	38
Symptom table-HCIT 2000-sheet option	38
Symptom table-output expander option	39
Symptom table-5-bin mailbox option	39
Symptom table-finisher option	39
Error code table	40
Sub error code table	51
Programming errors - P101 through P116	54
Understanding the printer operator panel	54
Operator panel buttons	54
Color Menu	56
Utilities Menu	57
User attendance message table	62
Service checks	76
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Repair information

4-49

5060-00

Rear roll

Reach around and depress the latch (A) on the side of the shaft and remove the tire.

Installation notes:

•

Replace both rollers at the same time.

•

When you replace the front roller, make sure the roller is pressed against the shaft and the screw is

fastened all the way down.

•

When replacing both the front and back rollers, note the directional markings on the rollers and make sure

the same narrow hub caps are facing each other. Check to see if the rollers turn freely.

•

The autocompensator pick rolls are located in the base machine. There are also rollers in all tray options. If

you have additional trays beneath your printer, check the condition of these rollers when you replace the

rollers in your printer.