Lexmark E 450 Dn Service Manual

Preventive maintenance6-1
  4512-630
6. Preventive maintenance
This chapter describes procedures for printer preventive maintenance. Follow these recommendations to help 
prevent problems and maintain optimum performance.
Safety inspection guide
The purpose of this inspection guide is to aid you in identifying unsafe conditions.
If any unsafe conditions exist, find out how serious the hazard could be and if you can continue before you 
correct the hazard.
Check the following items:
•Damaged, missing, or...

6-2Service Manual 4512-630   

Parts Catalog7-1
  4512-630
7.  Parts Catalog
How to use this parts catalog
The following legend is used in the parts catalog:
•Asm-index: identifies the assembly and the item in the diagram. For example 3-1 indicates 
assembly 3 and the item number 1.
•Part number: identifies the unique number that identifies this FRU.
•Units/mach: refers to the number of units actually used in the machine or product.
•Units/FRU: refers to the number of units packaged together and identified by the part number.
•NS:...

7-2Service Manual 4512-630  
Assembly 1:  Covers 

Parts Catalog7-3
  4512-630
Assembly 1: Covers
Asm- 
IndexPart 
numberUnits/
machUnits/ 
FRUDescription
1–1 40X5069 1 1 Top cover assembly (includes narrow media sensor)
2 40X5068 1 1 Top cover right flag
3 40X2839 1 1 Rear upper and lower cover assembly
4 40X2858 1 1 Legal extender dust cover
5 40X2837 1 1 Right side cover
6 40X2843 1 1 Optional media drawer assembly
7 40X2844 1 1 Tray 2 assembly
8 40X2855 1 4 Tray 2 wear strips
9 40X2854 1 4 Tray 1 wear strips
10 40X2842 1 1 Main tray
11 40X2836 1 1...

7-4Service Manual 4512-630  
Assembly 2:  Electronics
5
1
8
9
143
3
10
3
11
13
2
3
7
12
153
6
4 

Parts Catalog7-5
  4512-630
Assembly 2: Electronics
Asm- 
IndexPart 
numberUnits/
machUnits/ 
FRUDescription
2—1 40X2803 1 LSU, E350d/E352dn/E450dn (printhead)
2 40X2800 1 Fuser assembly, 110 V
2 40X2801 1 Fuser assembly, 220 V
2 40X2802 1 Fuser assembly, 100 V
3 40X2833 1
1
1
1
1Miscellaneous cable assemblies
Thermistor
LVPS/HVPS to controller card
Main drive gear assembly (motor to controller card)
Fuser power (LVPS to fuser)
4 40X2823 1 1 Duplex and media sensor assembly
5 40X2813 1 1 Cover open...

7-6Service Manual 4512-630  
Assembly 3:  Frame 

Parts Catalog7-7
  4512-630
Assembly 3: Frame
Asm- 
IndexPart 
numberUnits/
machUnits/ 
FRUDescription
3—1 40X2834 1 Media exit guide assembly
2 40X2822 1 Transfer roll, bearings, gear, spring (CBM)
3 40X2858 1 1 Legal extender dust cover
4 40X2850 N/A
4
4
4
2
2Screws, miscellaneous
TP2NCX3X6PF-Ni 
TP2C-4.0+8PF-Ni 
M3.0*0.5+6PF-Ni
M3.0*0.5+4PF-Ni
M3.5*0.6+6P-Ni
5 40X2853 1 1 ACM drive shaft assembly
6 40X2841 1 1 Complete duplex assembly
7 56P1820 2 Paper feed, ACM tires (RO)
8 40X2838 1 1 Media (ACM)...

7-8Service Manual 4512-630  
Assembly 4:  Options
Assembly 5:  Power cords
Asm- 
IndexPart 
numberUnits/
machUnits/ 
FRUDescription
NS 40X1364 1 32MB SDR DIMM
NS 40X1365 1 64MB SDR DIMM
NS 40X1366 1 128MB SDR DIMM
NS 40X1367 1 Parallel cable, packaged (3 m)
NS 40X1368 1 USB cable, packaged (2 m)
NS 40X1371 1 256MB SDR DIMM
NS 40X1564 1 32MB flash card assembly
NS 40X1512 1 Japanese font card assembly
NS 40X1513 1 Simplified Chinese font card assembly
NS 40X1514 1 Traditional Chinese font card assembly
NS...