Konica Minolta KN-303 User manual

SERVICE MANUAL
MODEL
KN-303
NOVEMBER 2000
CSM-KN303

KN-303
SERVICE MANUAL
Used on Models
7020/7030/7045
NOVEMBER 2000

IMPORTANT NOTICE
Because of the possible hazards to an inexperienced
person servicing this equipment, as well as the risk of
damage to the equipment, Konica Business Technolo-
gies strongly recommends that all servicing be per-
formed by Konica-trained service technicians only.
Changes may have been made to this equipment to
improve its performance after this service manual was
printed. Accordingly, Konica Business Technologies,
Inc., makes no representations or warranties, either
expressed or implied, that the information contained in
this service manual is complete or accurate. It is under-
stood that the user of this manual must assume all risks
orpersonalinjuryand/ordamagetotheequipmentwhile
servicing the equipment for which this service manual
is intended.
© 2000, KONICA BUSINESS TECHNOLOGIES, INC.
All rights reserved.
Printed in U.S.A.
Corporate Publications Department

C-1 KN-303 Network Interface Card
Safety and Important Warning Items
SAFETY AND IMPORTANT WARNING ITEMS
Read carefully the Safety and Important Warning Items described below to understand them before
doing service work.
IMPORTANT NOTICE
Because of possible hazards to an inexperienced person servicing this equipment, as well as the
risk of damage to the equipment, Konica Corporation, strongly recommends that all servicing be
performed only by Konica-trained service technicians.
Changes may have been made to this equipment to improve its performance after this service
handbook was printed. Accordingly, Konica Corporation, makes no representations or warranties,
either expressed or implied, that the information contained in this service handbook is complete or
accurate. It is under-stood that the user of this service handbook must assume all risks or personal
injury and/or damage to the equipment while servicing the equipment for which this service hand-
book is intended.
Therefore, this Service Handbook must be read carefully before doing service work both in the
course of the technical training and even after that, for keeping the correct maintenance and control
of the copying machine. Keep the Service Handbook also for the future service. When it is impos-
sible to read the description about safety and warning (due to contamination or tear), the relevant
page should be re-placed.
DESCRIPTION ITEMS FOR Danger,Warning AND Caution
In this Service Handbook, each of three expressions, “ Danger, Warning and Caution” is
defined as follows together with a symbol mark to be used in a limited meaning.
When servicing, the relevant works (disassembling, assembling, adjustment, repair and mainte-
nance) need to be conducted with utmost care.
Danger: Actions having a high possibility of suffering death or serious
wound
Warning: Actions having a possibility of suffering death or serious wound
Caution: Actions having a possibility of suffering a slight wound, medium
trouble and material damage

C-2 KN-303 Network Interface Card
Safety and Important Warning Items
SAFETY WARNINGS
●MODIFICATIONS NOT AUTHORIZED BY Konica
Konica copiers are renowned for their high reliability. This reliability is achieved through high-quality
design and a solid service network.
Photocopier design is a highly complicated and delicate process where numerous mechanical,
physical, and electrical aspects have to be taken into consideration, with the aim of arriving at
proper tolerances and safety factors. For this reason, unauthorized modifications involve a high risk
of degrading performance and safety. Such modifications are therefore strictly prohibited. The points
listed below are not exhaustive, but they illustrate the reasoning behind this policy.
Prohibited Actions :
(1) Using extension cables or a different power cord than specified by Konica.
(2) Using other fuses than specified by Konica. Safety will not be assured, lead-
ing to a risk of fire and injury.
(3) Disabling fuses or bridging fuse terminals with wire, metal clips, solder or
similar. (This applies also to thermal fuses.)
(4) Removing air filters (except for replacement).
(5) Disabling relay functions (such as wedging paper between relay contacts,
etc.).
(6) Disabling safety functions (interlocks, safety circuits, etc.). Safety will not be
assured, leading to a risk of fire and injury.
(7) Performing actions to copier not described in the instruction manual or the
service handbook.
(8) Using parts other than specified by Konica.
●CHECKPOINTSWHEN PERFORMING ON-SITE SERVICE
Konica copiers are extensively tested before shipping, to ensure that all applicable safety stan-
dards are met, in order to protect the customer and customer engineer from the risk of injury.
However, in daily use, any electrical equipment will be subject to parts wear and eventual failure. In
order to maintain safety and reliability, the customer engineer must perform regular safety checks.
Caution :
(1) Wear clothing that facilitates work and is designed for safety.
(2) Carry out all procedures carefully to prevent injury.
(3) Be sure to disconnect the power cord of the copier and all optional equip-
ment from the AC outlet.
Simply turning off the power switch is not sufficient, because paper feed
units or other electrical equipment may be powered also when the power
switch is turned off.
(4) Proceed with special care when performing operation checks or adjustment
while the unit is powered. When carrying out operation checks or adjust-
ment while external covers are removed, the risk of electrical shock exists
when touching parts which carry high voltage or electrical charge. The risk
of injury exists when touching moving parts such as gears or chains.

C-3 KN-303 Network Interface Card
Safety and Important Warning Items
The following list is not exhaustive, but it includes actions which must be carried out at every ser-
vice call.
Caution :
(1) Check external covers and the frame for sharp edges, burrs, or nicks.
(2) Check external covers and hinges for loosening or damage.
(3) Check wiring for squeezing or damage.
(4) Check power cord for insulation problems (conductor must not be exposed).
(5) Check that power cord is properly connected.
Warning :
(1) Verify that the copier is properly grounded. If a problem is detected, estab-
lish a proper ground connection.
(2) Connecting the ground lead to an improper point such as listed below re-
sults in a risk of explosion and electric shock.
Unsuitable ground points:
- Gas pipe
- Lightning rod
- Telephone line ground
- Plastic water pipe or water pipe or faucet that has not been approved by
authorities for grounding use
●PRECAUTIONS FOR ON-SITE SERVICE
Caution :
(1) Before performing maintenance work, read all relevant documentation (ser-
vice handbook, technical notices, etc.) and proceed according to the pre-
scribed procedure, using only the prescribed tools. Do not carry out any
adjustments not described in the documentation.
(2) If the power cord is damaged, replace it only with the specified power cord.
If the power cord insulation has been damaged and there are exposed sec-
tions, shortcircuits and overheating may occur, leading to a serious fire risk.
(3) Do not route the power cord so that it can be stepped on or pinched. Other-
wise overheating may occur, leading to a serious fire risk.
(4) When disconnecting any cables, always grasp the connector and not the
cable (especially in the case of AC and high-voltage leads).
(5) Carefully remove all toner remnants from electrical parts, electrodes, etc.
(6) Make sure that wiring cannot come into contact with sharp edges, burrs, or
other pointed parts.
(7) Double-check to make sure that all screws, components, wiring, connec-
tors, etc. that were removed for maintenance have been reinstalled in the
original location. (Pay special attention to forgotten connectors, pinched
cables, forgotten screws, etc.)
(8) When installation and preventive maintenance, verify that the power cord
has been securely plugged into the AC outlet. Contact problems may lead
to increased resistance, overheating, and the risk of fire.
Warning :
(1) Before disassembling or adjusting the optical unit or any parts that use a
laser, make sure that the power cord has been disconnected.

C-4 KN-303 Network Interface Card
Safety and Important Warning Items
(2) Do not remove the main cover of the write unit. Direct exposure of the eye to
laser beams may lead to blindness.
(3) Do not turn the copier on while the write unit is not installed in its normal
position.
(4) Danger of explosion if battery is incorrectly replaced, replace only with the
same or equivalent recommended by the manufacturer. Discard used bat-
teries according to the manufacture’s instructions.
Vorsicht :
(4) Expiosionsgefahr dei unsachegemäßem Austausch der Battetie. Ersatz nur
durch denselben oder einen vom. Hersteller empfohlenen gleichwertigen Typ.
Entsorgung gebrauchter Batterien nach Angaben des Herstellers.
●HANDLING OF MATERIALS FOR SERVICING
Caution: Drum cleaner (alcohol-based) and roller cleaner (acetone- based) are
highly flammable and must be handled with care.
When using these materials for cleaning of copier parts, observe the
following pre-cautions.
(1) Disconnect the power cord from the AC outlet.
(2) Use only a small amount of cleaner at a time and take care not to spill any
liquid. If this happens, immediately wipe it off.
(3) Perform cleaning only in an environment where sufficient ventilation is assured.
Breathing large quantities of organic solvents can lead to discomfort.
(4) Do not replace the cover or turn the unit on before any solvent remnants on
the cleaned parts have fullyevaporated.
Caution: Toner and developer are not harmful sub-stances, but care must be
taken not to breathe excessive amounts or let the substances come
into contact with eyes etc.
If this happens, immediately rinse with eye wash and plenty of water,
and consult a physician.
●MEASURESTOTAKE IN CASE OF AN ACCIDENT
(1) If an accident has occurred, the distributor who has been notified first must
immediately take emergency measures to provide relief to affected persons
and to prevent further damage.
(2) If a report of a serious accident has been received from a customer, an on-
site evaluation must be carried out quickly and Konica Corporation must be
notified.
(3) To determine the cause of the accident, conditions and materials must be
recorded through direct on-site checks, in accordance with instructions is-
sued by Konica Corporation.
●CONCLUSION
Safety of users and customer engineers has topmost priority, ranking even higher than operability.
Safety depends on a appropriate maintenance work and is maintained by proper daily service work
conducted by customer engineers. When performing service, each copier on the site must be
tested for safety. The customer engineer must verify the safety of parts and ensure appropriate
management of the equipment.

C-5 KN-303 Network Interface Card
Contents
CONTENTS
SAFETY AND IMPORTANT WARNING ITEMS .......................................... C-1
IMPORTANT NOTICE ................................................................................. C-1
DESCRIPTION ITEMS FOR Danger, Warning AND Caution...................... C-1
SAFETY WARNINGS .................................................................................. C-3
● CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE ...................................... C-3
● PRECAUTIONS FOR ON-SITE SERVICE .................................................................. C-3
Chapter 1. Overview
■Product specifications................................................................................1-1
● KN-303 network card...................................................................................................1-1
■Product overview .......................................................................................1-2
●Capabilities of the KN-303 Network Card......................................................................1-2
Chapter 2. Assembly / Disassembly
■Assembly/Disassembly.............................................................................2-1
● To Install to the IP-421/IP-431 Print Controllers ...........................................................2-1
● To remove from the IP-421/IP-431 Print Controllers ....................................................2-2
Chapter 3. Troubleshooting
■LED Status Indicator.................................................................................3-1
■Status Page ..............................................................................................3-2
■Resetting the KN-303 to Factory Default ..................................................3-4
■How to Diagnose Problems ......................................................................3-5
●TroubleshootingNetworkHardwareConnections .........................................................3-6
●TroubleshootingMAPProblems ....................................................................................3-6
●TroubleshootingNetWareProtocol ...............................................................................3-6
●NetWareChecklist .......................................................................................................3-6
●File Server Checklist....................................................................................................3-7
●WorkstationChecklist ..................................................................................................3-7
●Print Server Card Configuration Checklist ....................................................................3-7
●Printer Server/File Server/Printer Checklist ..................................................................3-8
●Workstationto KN-303 Print server Connection Checklist ............................................3-8
●KN-303 Loses Its File Server Connection ....................................................................3-8
●Unable to Print from a Different Context.......................................................................3-8

C-6 KN-303 Network Interface Card
Contents
Chapter 4. Appendices
■Rewriting the firmware................................................................................4-1
●Preparation ..................................................................................................................... 4-1
●Procedure of rewriting the firmware................................................................................ 4-1
■Functions of parts mounted on the board. .................................................4-2
●Jumpers .......................................................................................................................... 4-3
Index
Index ....................................................................................................... Index-1

Overview
1

1-1 KN-303 Network Interface Card
Chapter 1 Overview
■Product specifications
●KN-303 network card
Type: Installs in Konica IP-421/IP-431 print controller
Card: Network controller card x1
Network interface: Ethernet (100Base-TX/10Base-T)
Protocols: IPX/SPX(NetWare, peer-to-peer),
TCP/IP(LPD/LPR,peer-to-peer),
Apple Talk (Ether Talk)
Host computer: DOS/V computers, NEC PC-98 series, Macintosh
Dimensions: 4.9 inches (W) x 3.75 inches (H)
Weight: Approx. 110 g
Power source: 5 VDC (5-% to +5%,), 0.5A
Note: Specifications are subject to change for improvement with-
out prior notice.

1-2 KN-303 Network Interface Card
Chapter 1 Overview
■Product overview
●Capabilities of the KN-303 Network Card
The Konica KN-303 Network Card allows connecting the Konica IP-421 and IP-431 print controllers
to a computer network. It receives print jobs from the network and converts them into image data
(video data) that the 7020 copier prints out.
The KN-303 network card is characterized as follows.
⇑Automatically selects 100Base-TX (Fast Ethernet) or 10Base-T.
⇑Supports peer-to-peer printing by TCP/IP from Microsoft Windows 95/98.
⇑Supports printing by LPD/LPR of Microsoft Windows NT/2000.
⇑Supports printing by Macintosh OS7.x or later.
⇑Supports both of Novell NetWare bindery mode and Novell Directory Service
(NDS).
⇑Incorporates an HTTP server and enables to link the Management Access
Program (MAP) provided with a standard Web Browser to manage the printer
and network card.
⇑Use of flash memory allows upgrading the firmware via the network.
This Service Handbook describes hardware construction, procedures of installing/removing the
KN-303 to/from the IP-421 and IP-431, troubleshooting, and appendixes (installing firmware, set-
ting jumpers on the KN-303 card, etc).
The IP-421 is illustraded below.
IP-421
KN-303

Assembly / Disassembly
2

2-1 KN-303 Network Interface Card
Chapter 2 Assembly / Disassembly
■ Assembly/Disassembly
● To Install to the IP-421/IP-431 print controllers (IP-421 shown below)
1. Unfasten 2 screws and remove a halved board from the print controller.
2. Insert the KN-303 into the entrance of the print controller and push deeply along the guide
rail.
3. Insert the KN-303 into the print controller and fasten 2 screws.

2-2 KN-303 Network Interface Card
Chapter 2 Assembly / Disassembly
●To remove from the IP-421/IP-431 print controllers (IP-421 shown
below
1. Unfasten 11 screws and remove the main cover from the print controller.
main cover
2. Remove the screws that retain the KN-303 and the print controller.
3. Push the KN-303 out of the inside.
4. Install the main cover of print controller.
Installation of main cover is the opposite of procedure 1.
Refer to the IP-421 or IP-431 service handbook for removal and installation.

Troubleshooting
3

3-1 KN-303 Network Interface Card
Chapter 3 Troubleshooting
■LED Status Indicator
The KN-303 has two LED status indicators: Amber and Green. The Amber LED generally indicates
job activity; it flashes when a print job is being communicated to the KN-303 Print server; it is off
when no activity is occurring.
The Green LED indicates the operating condition of the KN-303 when it is powered on during
normal operation. The following table provides the conditions that this LED may indicate.
LED Patterns
Green LED is steady
ON solid.
Green LED -
blinks 3 times and
stays on.
Green LED
blinks rapidly.
Green LED
blinks rapidly 4
times then pauses.
Amber LED
blinks short for
10 seconds.
Amber LED goes
off and the Green
LED blinks con-
tinuously.
Green LED
blinks slowly.
Green LED
blinks rapidly.
Green LED
alternately blinks
with Amber LED.
Operating
Condition
Error
Error
Error
Error
Error
Error
Normal
Normal
Normal
error.
Failed the Ethernet
hardware self-test.
Check the network.
Did not pass the check-
sum test. Unit automat-
ically goes into
download mode and
awaits flash update.
Some printer interface
Has lost its NetWare
connection to file
server.
Has been reset to fac-
tory defaults.
Is performing self-tests.
Is functioning properly.
Prints out status page
Detects defective RAM chip.
THEN THE KN-303...
sequence.
First powered on.
Awaiting print jobs.
Finished self-tests.
Performing self-tests.
Performing self-tests.
Performing flash
memory self-tests
Awaiting print jobs
sometime after
power-on completes.
Awaiting print jobs.
Finished power-on
And the printer is... Action
None.
None.
None.
Replace the KN-303.
Check the network.
Execute flash update.
Check connection
between the KN-303
and IP-421.
Check NetWare
settings.
Power off
and move jumper to
OFF position.

3-2 KN-303 Network Interface Card
Chapter 3 Troubleshooting
■Status Page
The Status page report is sent as a print job to the printer when the KN-303 is powered on. For
example, the report on the next page shows the configuration of the KN-303 immediately before the
report is printed.The copier also allows you to use a command from the LCD panel that will produce
a status report.
It is strongly recommended that you review this report immediately after installation and any time
the setup has been changed. If the report does not include a protocol that was configured, check
that the procedure was done properly.

3-3 KN-303 Network Interface Card
Chapter 3 Troubleshooting
An example of Status Page
--------------------------------------------------------------------------------
Unit Serial No: 123456 Version: 05.56
Network Address: 00:11:22:33:44:55
Network Topology: Ethernet Connector: RJ45
Network Speed: 100 Megabits
Novell Network Information enabled
Print Server Name: KON_123456
Password Defined: No
Preferred Server Name not defined
Directory Services Context not defined
Frame Type: 802.2 On 802.3
Peer-to-Peer Information enabled
Frame Type: 802.2 On 802.3
Network ID: 0
TCP/IP Network Information enabled
Frame Type: Ethernet II Protocol Address: Not Configured
Subnet Mask: 255.0.0.0 Default Gateway: 0.0.0.0
DNS Address: 0.0.0.0
AppleTalk Network Information enabled
Frame Type: 802.2 SNAP On 802.3
Protocol Address: Net Number 65384 Node Number 224 Socket Number
129
Preferred AppleTalk Zone: Default Zone
--------------------------------------------------------------------------------
Novell inactive
Peer-to-Peer Connection Information
Printer Name: KON_123456
AppleTalk Connection Information
AppleTalk Printer Name: KON_123456
TCP/IP Connection Information
Port Number : 10001
--------------------------------------------------------------------------------

3-4 KN-303 Network Interface Card
Chapter 3 Troubleshooting
■Resetting the KN-303 to Factory Default
You can cause the KN-303 to restore all parameters to factory default values, so the KN-303 Print
server appears just as it came from the factory. You may choose to do this when the KN-303 Print
server is moved to a new location where the environment (NetWare file servers, IP subnets, and so
on) is different.
This process is called “Reset to Factory”. It can be done with MAP or a Web Browser. However, if
network access is not possible, the following method may be used.
Resetting to factory default means that the print server loses all data such as
names and IP address. It does not lose its serial number or MAC address.