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Lexmark C750 Service Manual - Page 255

Lexmark C750 Manual

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5060-00x ITU assembly removal See "ITU assembly" on page 7-25 for the part number. 1. 2. 3. 4. Open the front cover. Remove the toner cartridges. Open the MPF. Raise the ITU release lever (A) and slide the ITU from the printer. ITU drive assembly removal See "ITU motor drive assembly with SKC motor" on page 7-27 for the part number. 1. 2. 3. 4. Remove the RIP board shield assembly. See "RIP board shield assembly removal" on page 4-71. Remove the engine board shield. See "Engine board shield removal" on page 4-30. Remove the ITU drive assembly mounting screws (A) and disconnect the cable. Move the bottom of the ITU drive assembly toward you as you rotate the top of the assembly out of the printer. Be careful not to damage the large drive gear as you remove the ITU drive assembly. Repair information 4-37

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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