Konica Minolta bizhub 20P User manual

SERVICE MANUAL
2010.072010.07
Ver. 1.0Ver. 1.0

TRADEMARKS
KONICA MINOLTA and the KONICA MINOLTA logo are trademarks or registered trademarks of
KONICA MINOLTA HOLDINGS, INC.
bizhub and PageScope are trademarks or registered trademarks of KONICA MINOLTA
BUSINESS TECHNOLOGIES, INC.
Apple and Macintosh are trademarks of Apple Inc., registered in the United States and other countries.
PCL is either a trademark or a registered trademark of Hewlett-Packard Company in the United States
and other countries.
Windows Vista is either a registered trademark or a trademark of Microsoft Corporation in the United
States and/or other countries.
Microsoft, Windows, Windows Server and Internet Explorer are registered trademarks of Microsoft
Corporation in the United States and/or other countries.
Linux is a registered trademark of Linus Torvalds in the United States and other countries.
PostScript and PostScript3 are either registered trademarks or trademarks of Adobe Systems
Incorporated in the United States and/or other countries.
ENERGY STAR is a U.S. registered mark.
Citrix and MetaFrame are registered trademarks of Citrix Systems, Inc. in the United States.
Intel, Intel Xeon and Pentium are trademarks or registered trademarks of Intel Corporation.
AMD, AMD Athlon, AMD Opteron and combinations thereof, are trademarks of Advanced Micro
Devices, Inc.
PictBridge is a trademark.
Each company whose software title is mentioned in this manual has a Software License Agreement
specific to its proprietary programs.
All other trademarks are the property of their respective owners.
© Copyright KONICAMINOLTA 2010
All rights reserved.
No part of this publication may be reproduced in any form or by any means without permission in writing
from the publisher.
All other product and company names mentioned in this manual are trademarks or registered
trademarks of their respective holders.
Specifications are subject to change without notice.

iConfidential
PREFACE
This service manual contains basic information required for after-sales service of the laser
printer (hereinafter referred to as "this machine" or "the printer"). This information is vital to the
service technician to maintain the high printing quality and performance of the printer.
This service manual covers the bizhub 20P printers.
This manual consists of the following chapters:
CHAPTER 1: SPECIFICATIONS
Provides specifications of each model, which enables you to make a comparison of the
different models.
CHAPTER 2: THEORY OF OPERATION
Gives an overview of the printing mechanisms as well as the sensors, actuators, and control
electronics. It aids in understanding the basic principles of operations as well as locating
defects for troubleshooting.
CHAPTER 3: ERROR INDICATION AND TROUBLESHOOTING
Details of error messages and codes that the incorporated self-diagnostic function of the
machine will display if any error or malfunction occurs. If any error message appears, refer
to this chapter to find which parts should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections
of the machine and related troubleshooting procedures.
CHAPTER 4: PERIODICAL MAINTENANCE
Details of consumable parts and periodical maintenance parts. This chapter also covers
procedures for disassembling and assembling periodical maintenance parts.
CHAPTER 5: DISASSEMBLY/REASSEMBLY
Details of procedures for disassembling and assembling of the machine together with related
notes. The disassembly order flow provided enables you to see at a glance the quickest way
to get to parts involved.
At the start of a disassembly job, you can check the disassembly order flow that guides you
through a shortcut to get to the object parts.
This chapter also covers screw tightening torques and lubrication points to which the
specified lubrications should be applied during assembly jobs.
CHAPTER 6: SERVICE MODE
Describes the maintenance mode which is exclusively designed for the purpose of checking
the settings and adjustments using the keys on the panel.
This chapter also covers hidden function menus, which activate settings and functions or
reset the parts life.
CHAPTER 7: CIRCUIT DIAGRAMS, WIRING DIAGRAM
Provides the Circuit Diagrams and Wiring diagram for the connections of the PCBs.

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CHAPTER 8: ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED
AFTER PARTS REPLACEMENT
Details of adjustments and updating of settings, which are required if the main PCB and
some other parts have been replaced.
APPENDIX 1: FIRMWARE SWITCHES (WSW)
APPENDIX 2: DELETION OF USER SETTING INFORMATION, etc.
Provides instructions on how to delete user setting information, etc recorded in the machine.
APPENDIX 3: SCREW CATALOGUE
APPENDIX 4: REFERENCES
APPENDIX 5: GLOSSARY
Information in this manual is subject to change due to improvement or redesign of the product.
All relevant information in such cases will be supplied in service information bulletins (Technical
Information).
A thorough understanding of this printer, based on information in this service manual and
service information bulletins, is required for maintaining its print quality performance and for
improving the practical ability to find the cause of problems.

iii Confidential
REGULATION
For Europe and Other countries
■Radio interference (220 to 240 volt model only)
This machine follows EN55022 (CISPR Publication 22)/Class B.
Before you use this product, make sure that you use one of the following interface cables.
(1) A shielded parallel interface cable with twisted-pair conductors and that it is marked
IEEE 1284 compliant.
(2) A USB cable.
The cable must not be more than 2 meters long.
■IEC 60825-1 specification (220 to 240 volt model only)
This machine is a Class 1 laser product as defined in IEC 60825-1 specifications. The label
shown below is attached in countries where it is needed.
This machine has a Class 3B laser diode which produces invisible laser radiation in the laser
unit. You should not open the laser unit under any circumstances.
Caution
Use of controls or adjustments or performance of procedures other than those specified in
this manual may result in hazardous radiation exposure.
For Finland and Sweden
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT
Varoitus!
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
Varning
Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
CLASS 1 LASER PRODUCT
LASER KLASSE 1 PRODUKT
PRODUCTO LASER DE CLASE 1

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■Internal laser radiation
Maximum radiation power: 5 mW
Wave length: 770 - 810 nm
Laser class: Class 3B
■EU Directive 2002/96/EC and EN50419
(European Union only)
This equipment is marked with the above recycling symbol. It means that at the end of the
life of the equipment you must dispose of it separately at an appropriate collection point and
not place it in the normal domestic unsorted waste stream. This will benefit the environment
for all. (European Union only)

vConfidential
For USA and Canada
■Federal Communications Commission (FCC) Declaration of Conformity
(For USA)
Responsible Party: KONICA MINOLTA BUSINESS SOLUTIONS U.S.A., INC.
100 Williams Drive
Ramsey, NJ 07446
Phone: [phone]
declares, that the products
Product name: bizhub 20P
Product option: Paper Feeder Unit PF-P10
complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
Important
A shielded interface cable should be used to ensure compliance with the limits for a Class B
digital device. Changes or modifications not expressly approved by KONICA MINOLTA
could void the user's authority to operate the equipment.

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■Industry Canada Compliance Statement (For Canada)
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
■Laser Safety (110 to 120 volt model only)
This machine is certified as a Class 1 laser product under the U.S. Department of Health and
Human Services (DHHS) Radiation Performance Standard according to the Radiation
Control for Health and Safety Act of 1968. This means that the machine does not produce
hazardous laser radiation.
Since radiation emitted inside the machine is completely confined within protective housings
and external covers, the laser beam cannot escape from the machine during any phase of
user operation.
■FDA Regulations (110 to 120 volt model only)
The U.S. Food and Drug Administration (FDA) has implemented regulations for laser
products manufactured on and after August 2, 1976. Compliance is mandatory for products
marketed in the United States. The following label on the back of the machine indicates
compliance with the FDA regulations and must be attached to laser products marketed in the
United States.
■Internal laser radiation
Maximum radiation power: 5 mW
Wave length: 770 - 810 nm
Laser class: Class 3B
COMPLIES WITH 21CFR 1040.10 AND 1040.11 EXCEPT FOR DEVIATIONS
PURSUANT TO LASER NOTICE NO.50, DATED JUNE 24, 2007.

vii Confidential
SAFETY INFORMATION
■Caution for Laser Product (WARNHINWEIS fur Laser drucker)
CAUTION: When the machine during servicing is operated with the cover open, the
regulations of VBG 93 and the performance instructions for VBG 93 are
valid.
CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To
prevent direct exposure to the laser beam, do not try to open the enclosure
of the laser unit.
ACHTUNG: Im Falle von Störungen der Lasereinheit muß diese ersetzt werden. Das
Gehäuse der Lasereinheit darf nicht geöffnet werden, da sonst
Laserstrahlen austreten können.
<Location of the laser beam window>
■Additional Information
When servicing the optical system of the printer, be careful not to place a screwdriver or
other reflective object in the path of the laser beam. Be sure to take off any personal
accessories such as watches and rings before working on the printer. A reflected beam,
though invisible, can permanently damage the eyes.
Since the beam is invisible, the following caution label is attached on the laser unit.

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■Definitions of Warnings, Cautions and Notes
The following conventions are used in this service manual:
Mark Contents
Warnings tell you what to do to prevent possible personal injury.
Electrical Hazard icons alert you to a possible electrical shock.
Hot Surface icons warn you not to touch machine parts that are hot.
Cautions specify procedures you must follow or avoid to prevent
possible damage to the machine or other objects.
Note Note tells you useful tips when servicing the machine.
Memo Memo tells you bits of knowledge to help understand the machine.
WARNING
Indicates warnings that must be observed to prevent possible personal injury.
CAUTION:
Indicates cautions that must be observed to service the printer properly or prevent
damage to the printer.
Note :
• Indicates notes and useful tips to remember when servicing the printer.
** Listed below are the various kinds of "WARNING" messages included in this manual
WARNING
Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the printer.
WARNING
Some parts inside the printer are extremely hot immediately after the printer is used.
When opening the front cover or back cover to access any parts inside the printer,
never touch the shaded parts shown in the following figures.

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WARNING
If you analyze malfunctions with the power plug inserted into the power outlet, special
caution should be exercised even if the power switch is OFF because it is a single
pole switch.
WARNING
DO NOT use flammable substances, any type of spray or any organic solvent/liquids
contains alcohol or ammonia to clean the inside or outside of the machine.
Doing this may cause a fire or electrical shock.

CHAPTER 1
SPECIFICATIONS

Confidential
CHAPTER 1
SPECIFICATIONS
This chapter lists the specifications of each model, which enables you to make a comparison
of different models.
CONTENTS
1. COMPONENTS ............................................................................................................. 1-1
2. SPECIFICATIONS LIST ................................................................................................1-2
2.1 Printing ..................................................................................................................1-2
2.2 Functions ............................................................................................................... 1-3
2.3 Electronics and Mechanics....................................................................................1-5
2.4 Network Connectivity............................................................................................. 1-6
2.5 Service Information................................................................................................1-7
2.6 Paper ..................................................................................................................... 1-8
2.6.1 Paper handling ........................................................................................... 1-8
2.6.2 Media specifications ................................................................................... 1-9
2.6.3 Type and size of paper ...............................................................................1-9
2.7 Printable Area...................................................................................................... 1-11
2.8 Print Speeds with Various Settings...................................................................... 1-17

1-1 Confidential
1. COMPONENTS
The equipment consists of the following major components:
Fig. 1-1
Top Cover
Panel PCB
Back Cover
Outer Chute ASSY
Rear Chute ASSY
Fuser Unit
Main PCB
Access Cover
Side Cover L
Side Cover R
Laser Unit
Support Flap 2
Toner LED PCB Unit ASSY
Paper Tray
High-voltage PS PCB
LVPS PCB
MP Tray Cover ASSY
Process Cover ASSY
Frame Unit

1-2 Confidential
2. SPECIFICATIONS LIST
2.1 Printing
*1 Using 1200 dpi setting (1200 x 1200 dpi) the print speed will be slower.
*2 The time may change if the machine is calibrating or registering itself.
Specifications are subject to change without notice.
Model bizhub 20P
Print method Electrophotography by semiconductor laser beam
scanning
Laser Method: 1 polygon motor, 1 laser beam
Wavelength: 770 nm - 810 nm
Output: 5 mW (Max)
Laser class: Class3 B
Resolution 1200 dpi *1,
HQ1200
(2400x600dpi)
Windows
®
2000/XP/ XP Professional x64 Edition, Windows
Vista
®
, Windows
®
7, Windows Server
®
2003/ Windows
Server
®
2003 x 64 Edition, Windows Server
®
2008, Mac
OS
®
X 10.3.9 or greater
600 x 600 dpi
Windows
®
2000/XP/ XP Professional x64 Edition, Windows
Vista
®
, Windows
®
7, Windows Server
®
2003/ Windows
Server
®
2003 x 64 Edition, Windows Server
®
2008, Mac
OS
®
X 10.3.9 or greater
Print mode Normal printing mode
Economy printing mode (Toner saving mode)
Print Speed
(A4/Letter)
Standard Up to 30/32 ppm
* When loading A4 or Letter-size paper from the
standard paper tray.
Duplex A4: Up to 13 sides per minute (6.5 sheets per minute)
Letter: Up to 14 sides per minute (7 sheets per minute)
Warm-up time *2 From sleep mode: less than 18 seconds
From power off on: less than 28 seconds
First print time *2 Less than 8.5 seconds
Consumables Toner cartridge Life expectancy:
8,000 pages/cartridge
* When printing A4/Letter-size paper in accordance with
ISO/IEC 19752.
Shelf life: 2 years without opening (6 months after
opening)
Drum unit Life expectancy: 25,000 pages/drum unit
Life expectancy will vary depending on number of
continuous printing pages. (Refer to CHAPTER 6 1.3
Service Mode "Printing for Maintenance".)
* When printing A4/Letter-size paper.
Shelf life: 2 years without opening (6 months after
opening)
The shelf life mentioned above is guaranteed under the normal condition as
below;
(Temperature) Normal condition: 0 to 40 °C
* Storage condition at the temperature of 40 to 50 °C: Up to 5 days
* Storage condition at the temperature of -20 to 0 °C: Up to 5 days
(Humidity) Normal condition: 35 to 85 %
* Storage condition at the humidity of 85 to 95 %: Up to 5 days
* Storage condition at the humidity of 10 to 35 %: Up to 5 days

1-3 Confidential
2.2 Functions
<Controller>
*1 Windows Server®2003 and Windows Server®2008 are supported for netwoking printing
only.
Pararell interface is not supported for Windows Vista®/Windows®7.
<Software>
Model bizhub 20P
CPU (clock speed ) 300 MHz
Memory Standard 32 MB
Option 1 DIMM slot; expandable up to 544 MB
Interface *1 IEEE 1284 Parallel, Hi-Speed USB 2.0, Ethernet 10/100
BASE-TX
Emulation PCL6, BR-Script 3 (PostScript®3™), IBM Proprinter XL,
Epson FX-850
Network
Connectivity
Protocol TCP/IP(10/100 BASE-TX Ethernet)
Management tool BRAdmin Light, Web Based Management
Resident fonts PCL 66 scalable fonts, 12 bitmap fonts, 13 bar codes
BR-Script 3 66 scalable fonts
Model bizhub 20P
Printer driver Windows®Host-Based Driver for Windows
®
2000 Professional/
XP/XP Professional x64 Edition/Windows Vista
®
/
Windows
®
7/Windows Server
®
2003/Windows Server
®
2003 x64 Edition/Windows Server
®
2008
BR-Script3 (PPD file) for Windows
®
2000 Professional/XP/
XP Professional x64 Edition/Windows Vista
®
/Windows
®
7/
Windows Server
®
2003/Windows Server
®
2003 x64 Edition
/Windows Server
®
2008
Macintosh® Macintosh Printer Driver for Mac OS
®
X 10.3.9 or greater
BR-Script 3 (PPD file for Mac OS
®
X 10.3.9 or greater)

1-4 Confidential
<System requirements for printing function>
Computer Platform &
Operating System Version Processor Speed Minimum RAM
Recom-
mended
RAM
Available
Hard
Disk
Space
Windows®Windows®7 Intel®Pentium®4 or
equivalent 64-bit
(Intel®64 or AMD64)
supported CPU
1GB
(32-bit)
2GB
(64-bit)
1GB
(32-bit)
2GB
(64-bit)
50MB
Windows
Vista®
512MB 1GB 50MB
Windows
Server®2003
x64 Edition
AMD Opteron™
AMD Athlon™ 64
Intel®Xeon™ with Intel®
EM64T
Intel®Pentium®with
Intel®EM64T or
equivalent
256MB 512MB 50MB
Windows®XP
Professional
x64 Edition
AMDOpteron™
AMDAthlon™64
Intel®Xeon®with Intel®
EM64T
Intel®Pentium®4 with
Intel®EM64T or
equivalent
256MB 512MB 50MB
Windows
Server®2008
R2
64-bit (Intel®64 or
AMD64) supported CPU
512MB 2GB 50MB
Windows
Server®2008
Intel®Pentium®4 or
equivalent 64-bit
(Intel®64 or AMD 64)
supported CPU
512MB 2GB 50MB
Windows
Server®2003
Intel®Pentium®III or
equivalent
256MB 512MB 50MB
Windows®XP
Home Edition
Intel®Pentium®or
equivalent
128MB 256MB 50MB
Windows®XP
Professional
Windows®
2000
Professional
64MB 256MB 50MB
Apple®
Macintosh®OS®X
10.3.9 - 10.4.3
Power PC G4/G5, Power
PC G3 350MHz
128MB 256MB 80MB
OS®X
10.4.4 or
greater
Power PC G4/G5, Intel®
Core™ Processor
512MB 1GB 80MB

1-5 Confidential
2.3 Electronics and Mechanics
Model bizhub 20P
Power
consumption
Printing Average 675 W at 25 °C (77 °F)
Ready Average 75 W at 25 °C (77 °F)
Sleep
Average 6 W at 25 °C (77 °F)
Noise level Sound
Pressure
Printing: 54 dB (A)
Ready: 35 dB (A)
Sound
power
Printing: LWAd = 6.9 Bell (A)
Ready: LWAd = 4.8 Bell (A)
Temperature Operating: 10 to 32.5°C (50 to 90.5 °F)
Non operating: 0 to 40°C (38 to 104 °F)
Storage: -20 to 40°C (-4 to 104 °F)
Humidity Operating: 20 to 80 % (non condensing)
Storage: 10 to 85 % (non condensing)
Dimensions of the main
body (WxDxH)
371x384x246mm (14.6x15.1x9.7in.)
Weight the main
body with
Carton
11.7kg (25.8lb)
the main
body
without
Carton
9.5kg (20.9lb)

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2.4 Network Connectivity
<Ethernet wired network>
Network node type NC-6800h
Operating system
support
Windows®2000 Professional, Windows®XP, Windows®7, Windows®
XP Professional x64 Edition, Windows Vista®, Windows Server®2003,
Windows Server®2003 x64 Edition, Windows Server®2008
Mac OS®X 10.3.9 or greater
Protocol support TCP/IP: IPv4 ARP, RARP, BOOTP, DHCP, APIPA (Auto IP),
WINS/NetBIOS name resolution, DNS Resolver,
mDNS, LLMNR responder, LPR/LPD, Custom Raw
Port/Port9100, IPP/IPPS, FTP Client and Server,
TELNET Server, HTTP/HTTPS Server, SSL/TLS,
TFTP Client and Server, SMTP Client, APOP, POP
before SMTP, SMTP AUTH, SNMPv1/v2c/v3, ICMP,
LLTD responder, Web Services Print, CIFS Client,
SNTP, LDAP, POP3/SMTP
TCP/IP: IPv6 (Turned off as default) NDP, RA, DNS resolver,
mDNS, LLMNR responder, LPR/LPD, Custom Raw
Port/Port9100, IPP/IPPS, FTP Client and Server,
TELNET Server, HTTP/HTTPS server, SSL/TLS,
TFTP Client and Server, SMTP Client, APOP, POP
before SMTP, SMTP AUTH, SNMPv1/v2c/v3,
ICMPv6, LLTD responder, Web Services Print, CIFS
Client, SNTP, LDAP, POP3/SMTP
Network type 10/100 BASE-TX Ethernet network
Network printing Windows®7, Windows Vista®, Windows Server®2003, Windows®XP
and Windows®2000 TCP/IP printing
Mac OS®X 10.3.9 or greater printing
Management utility PageScope Net Care Device Manager
Web Based Management
(Printer and print server management throuth web browser)
recommend Microsoft Internet Explorer 6.0 (or greater), Fire fox 1.0 (or
greater) for Windows
Safari: 1.2 (or greater) for Macintosh
BRAdmin Light for Windows and Macintosh

1-7 Confidential
2.5 Service Information
These are key service information to maintain the product.
Machine life: 200,000 pages or 5 years, whichever comes first
MTBF (Meantime between failure): Up to 4,000 hours
MTTR (Meantime to repair): Average 0.5 hours
Maximum monthly volume: 30,000 pages
Periodical replacement parts:
* As for periodical replacement parts, refer to CHAPTER 4.
Parts Approximate Life (pages)
Fuser unit 100,000
Laser unit 100,000
PF kit China MP: 25,000
Tray 1/2/3: 100,000
India MP: 12,000
Tray 1/2/3: 80,000
Others MP: 50,000
Tray 1/2/3: 100,000