Home » Lexmark Manuals » Laser Printers » Lexmark C750 » Manual Viewer

Lexmark C750 Service Manual - Page 203

Lexmark C750 Manual

Add to My Manuals
Save this manual to your list of manuals

Page 203 highlights

5060-00x Prt Quality Pgs The print quality test has five pages of settings, various color blocks, color array scales, and color gradients. This test may be printed from either CONFIG MENU or the Diagnostics Menu. • When printed from the Configuration Menu, the toner cartridge lockout function is enabled, which means • these pages cannot be printed unless a cartridge is installed with a Machine Class ID which matches the Machine Class ID stored in the printer NVRAM. When printed from the Diagnostics Test Menu, the toner cartridge lockout function is disabled. To run the Print Quality Test page from the Diagnostics Menu, select Prt Quality Pgs from the menu. Once the test is started it cannot be canceled. When the test pages print the printer returns to the original screen. Prt Line Len Pg This test prints a color test page that is used to measure the temperature of the printheads and the reading from the PSD at calibration time. To run the Print Line Length Page, select Prt Line Len Pg from the menu. No buttons are active while the Print Line Length Page is printing. Press Return to exit. See "Print line length calibration" on page 4-61 for a sample of the page or page"Print Line Len page" on page B-12. HARDWARE TESTS The following Hardware Tests can be selected from this menu: LCD Test Button Test DRAM Test ROM Test Parallel Wrap (if available) Serial Wrap (if available) Serial 1 Wrap (if available) Serial 2 Wrap (if available) Serial 3 Wrap (if available) LCD Test This test verifies the operator panel LCD function. To run the LCD Test: 1. Select LCD Test from the Diagnostics Menu. The LCD test continually executes the LCD display test. 2. Press Return or Stop to cancel the test. Button Test This test verifies the operator panel LCD function. To run the Button Test: 1. Select Button Test from the Diagnostics Menu. With no buttons pressed, several OP (Open) messages are displayed. 2. Press each button one at a time and a CL (Closed) is display in place of OP. The proper operation of each button can be checked. 3. Press Return or Stop to cancel the test. Diagnostic aids 3-19

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
	100
	120
	121
	122
	123
	124
	125
	126
	127
	128
	129
	130
	131
	132
	133
	134
	135
	136
	148
	149
	150
	151
	152
	153
	154
	155
	156
	157
	158
	159
	160
	161
	162
	163
	164
	165
	200
	200
	500
	500
	2000

Match case Limit results 1 per page

Diagnostic aids

3-19

5060-00

Prt Quality Pgs

The print quality test has five pages of settings, various color blocks, color array scales, and color gradients.

This test may be printed from either CONFIG MENU or the Diagnostics Menu.

•

When printed from the Configuration Menu, the toner cartridge lockout function is enabled, which means

these pages cannot be printed unless a cartridge is installed with a Machine Class ID which matches the

Machine Class ID stored in the printer NVRAM.

•

When printed from the Diagnostics Test Menu, the toner cartridge lockout function is disabled.

To run the Print Quality Test page from the Diagnostics Menu, select

Prt Quality Pgs

from the menu. Once the

test is started it cannot be canceled. When the test pages print the printer returns to the original screen.

Prt Line Len Pg

This test prints a color test page that is used to measure the temperature of the printheads and the reading from

the PSD at calibration time.

To run the Print Line Length Page, select

Prt Line Len Pg

from the menu. No buttons are active while the Print

Line Length Page is printing. Press

Return

to exit. See

“Print line length calibration” on page 4-61

for a

sample of the page or page

“Print Line Len page” on page B-12

HARDWARE TESTS

The following Hardware Tests can be selected from this menu:

LCD Test

Button Test

DRAM Test

ROM Test

Parallel Wrap (if available)

Serial Wrap (if available)

Serial 1 Wrap (if available)

Serial 2 Wrap (if available)

Serial 3 Wrap (if available)

LCD Test

This test verifies the operator panel LCD function.

To run the LCD Test:

Select

LCD Test

from the Diagnostics Menu.

The LCD test continually executes the LCD display test.

Press

Return

Stop

to cancel the test.

Button Test

This test verifies the operator panel LCD function.

To run the Button Test:

Select

Button Test

from the Diagnostics Menu.

With no buttons pressed, several OP (Open) messages are displayed.

Press each button one at a time and a CL (Closed) is display in place of OP. The proper operation of each

button can be checked.

Press

Return

Stop

to cancel the test.