Xerox 8825 Service Manual

01/02
6-1
8825/8830 Printer
General Procedures
6 General Procedures
Diagnostics
To Enter The Diagnostic Mode ....................................................................................... 6-3
To Exit The Diagnostic Mode .......................................................................................... 6-4
Input Diagnostic Test Procedure..................................................................................... 6-4
Input Diagnostic Test Codes........................................................................................... 6-5
Output Diagnostic Test Procedure .................................................................................. 6-5
Output Diagnostic Test Codes ........................................................................................ 6-6
Stepper Motor Commands.............................................................................................. 6-7
To Enter Multiple Tests (Chaining).................................................................................. 6-7
To Exit from Multiple Tests.............................................................................................. 6-8
Special Tests...................................................................................................................6-8
General Procedures
GP 1 HVPS Checkout ..................................................................................................... 6-11
GP 2 Image on Drum (Panic Stop) Procedure................................................................ 6-11
GP 3 Drum Maintenance................................................................................................. 6-12
GP 4 Drum Cleaning Enhancement................................................................................ 6-13
GP 5 Communication Loopback Test ............................................................................. 6-13
GP 6 Downloading Firmware from a Laptop ................................................................... 6-14
GP 7 NVM Dump of Adjustable Settings......................................................................... 6-15
Service Notes
Transfer and Developer Bias Voltages incorrect (Tag 19) .............................................. 6-17
Power Cord Outlet Pulls Out Of AC Module ................................................................... 6-18
PRE-TAG 9 Maximum Length Shortfall .......................................................................... 6-18
Wavy Lines When Connected To XPC or Non Xerox Controller .................................... 6-19
LL-52 Errors After Installing New Control PWB .............................................................. 6-19
Cooling Fan Not Running................................................................................................ 6-20
Cleaning Blade Squeals During Print Cycle.................................................................... 6-20
Toner Cleaning Auger Bound Up.................................................................................... 6-21
LL-22 Caused By Metal Filings ....................................................................................... 6-21
Intermittent Black Lines Or Background Bands .............................................................. 6-22
Bent Corners (Dog Ears) On Lead Edge Of Narrow Media ............................................ 6-22
Problems With Film Stacking .......................................................................................... 6-23
Low Solid Area Density At Install .................................................................................... 6-24
Intermittent Extra Print .................................................................................................... 6-24
Loud Noise From HVPS.................................................................................................. 6-25
Troubleshooting Photoreceptor Drive Problems ............................................................. 6-25
Photoreceptor Damage................................................................................................... 6-26
Image Displacement (Rollover) On Vellum Or Film ........................................................ 6-26
Installation
Installation Procedure ..................................................................................................... 6-29
Product Demonstration ................................................................................................... 6-40
Installation Checklist ....................................................................................................... 6-41
Removal
Removal Procedure ........................................................................................................ 6-43
Tools
General Tools and Supplies (NACO) .............................................................................. 6-47
General Tools and Supplies (EO) ................................................................................... 6-48
Molex Connector Repair Procedure................................................................................ 6-50
Product Specifications
Product Specifications..................................................................................................... 6-53
8825 Change Tag
8825 Change Tag Information......................................................................................... 6-55
8830 Change Tag
8830 Change Tag Information......................................................................................... 6-59

Xerox 8825 Specifications

General

Brand	Xerox
Model	8825
Category	Printer
Language	English