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Lexmark E450DN Service Manual - Page 90

Front access cover removal, Remove Tray 1.

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4512-630 Front access cover removal 1. Remove Tray 1. 2. Open the front access cover. 3. Open the rear door and the right side cover. 4. Loosen the four screws, and remove the controller card cover. 5. Disconnect the operator panel cable (A) from J3 on the controller card. 6. Extract the cable, and unhook the access cover by pressing the right hinge to the right until it can be lifted up and away from its pivot. Relax the hinge above the pivot. 7. In the same manner, move the left hinge from its pivot point. 4-2 Lexmark™ E450dn

Section	Page
Table of contents	3
Notices and safety information	7
Laser notice	7
Laser	7
Avis relatif à l’utilisation de laser	7
Avvertenze sui prodotti laser	7
Avisos sobre el láser	8
Declaração sobre Laser	8
Laserinformatie	8
Lasermeddelelse	8
Laserilmoitus	9
Huomautus laserlaitteesta	9
Laser-notis	9
Laser-melding	9
Avís sobre el Làser	10
Consignes de sécurité	13
Norme di sicurezza	13
Sicherheitshinweise	14
Pautas de Seguridad	14
Informações de Segurança	14
Informació de Seguretat	15
Preface	16
1. General information	17
Maintenance approach	17
Overview of the operator panel	18
Specifications	19
Memory	19
Print quality	19
Media trays and supply capacity	20
Connectivity and compatibility	21
Types of print media	22
Tips on preventing jams	23
Paper path	23
Tools	24
Acronyms	25
2. Diagnostics information	27
Start	27
Power-On Self Test (POST) sequence	27
Overview of the operator panel and menus	28
Diagram of the printer menus	30
Messages and error codes	31
User attendance messages	31
Cartridge error messages	34
Paper jam error codes (200-series)	34
Service error codes	38
Symptom tables	41
POST symptom table	41
Printer symptom table	42
Service checks	43
Controller card service check	43
Cooling fan service check	44
Cover interlock switch service check	44
Dead machine service check	45
Fuser service check	45
LVPS/HVPS service check	46
Main motor service check	46
Operator panel service check	47
Paper feed service checks	47
Parallel or USB port service check	49
Print quality service checks	50
Printhead service check	57
Transfer roll service check	57
3. Diagnostic aids	59
Accessing service menus	59
Diagnostics mode	60
Entering Diagnostics mode	60
Available tests	60
Exiting Diagnostics mode	62
REGISTRATION	62
PRINT TESTS	71
HARDWARE TESTS	72
DUPLEX TESTS	74
INPUT TRAY TESTS	76
OUTPUT BIN TESTS	77
BASE SENSOR TEST	78
PRINTER SETUP	79
EP SETUP	81
EVENT LOG	82
EXIT DIAGNOSTICS	83
Configuration menu (CONFIG MENU)	84
Entering Configuration Menu	84
Available menus	84
Maintenance page count (Maint Cnt Value)	85
Maintenance page counter reset (Reset Maint Cnt)	85
Print quality pages (Prt Quality Pgs)	85
Panel Menus	85
PPDS Emulation	86
Demo Mode	86
Factory Defaults	86
Energy Conserve	86
EVENT LOG	86
Paper Prompts	86
Env Prompts	86
Change Prompts	87
Reduced Curl	87
USB Speed	87
Exit Config Menu	87
4. Repair information	89
Handling ESD-sensitive parts	89
Removal procedures	89
5. Locations and connections	137
Locations	137
Front view	137
Rear view	137
Controller card connector pin values	138
Connectors	140
6. Preventive maintenance	141
Safety inspection guide	141
Lubrication specifications	141
Maintenance kits	141
7. Parts Catalog	143
How to use this parts catalog	143
Assembly 1: Covers	144
Assembly 2: Electronics	146
Assembly 3: Frame	148
Assembly 4: Options	150
Assembly 5: Power cords	150
Wiring diagram	156