Konica Minolta DB-432 User Manual
SERVICE MANUAL
MODEL
DB-432
Drawer Base Unit
(With Parts Catalog)
DECEMBER 2002
CSM-DB432
DB-432
SERVICE MANUAL
Used On Models 8020/8031
December 2002
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 Technologies strongly recommends that all servicing be
performed 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
understood that the user of this manual must assume
all risks or personal injury and/or damage to the
equipment while servicing the equipment for which
this service manual is intended.
Corporate Publishing Department
© 2002, KONICA BUSINESS TECHNOLOGIES, INC.
All rights reserved.
Printed in U.S.A.
CONTENTS
GENERAL
1. SPECIFICATIONS ........................................................................................... G-1
2. PARTS IDENTIF IC ATION ........... ............... .............. ............... ............... .........G-1
3. CROSS-SECTIONAL VIEW ............................................................................G-2
4. DRIVE SYSTEM ..............................................................................................G-2
5. ELECTRICAL COMPONENTS LAYOUT ........................................................G-3
DIS/REASSEMBLY, ADJUSTMENT
1. DISASSEMBLY ...............................................................................................D-1
1-1. Maintenance Schedule ............................................................................D-1
1-2. Removal of Exterior Parts ........................................................................ D-2
1-3. Removal of the Paper Take-Up Unit ........................................................D-3
1-4. Removal of the Paper Take-Up Rolls ......................................................D-4
1-5. Removal of the Feed Roll, Separator Roll and Torque Limiter Assy .......D-6
1-6. Cleaning of the Paper Take-Up Roll ........................................................D-6
1-7. Cleaning of the Feed Roll and Separator Roll ..................................... .. ..D-6
1-8. Cleani n g of the Ve r tical Transport Ro ller/Rolls ................ .. ............... .......D-7
1-9. Cleaning of the Roll with a Torque Limiter ...............................................D-7
2. ADJUSTMENT ................................................................................................. D-8
2-1. Refere n ce Po sition Adjustme n t ..................................... ............... ...........D-8
2-2. Settings for Paper Size ..................... .. ........................... ............... ...........D-9
MISFEED/MALFUNCTION DETECTION
1. MISFEED DETECTION ................................ ........................... ............... .........T-1
1-1. Location of Misfeed Detecting Sensors .............. .. .. .. .. .. .. .. .. .. .. .................T-1
1-2. Misfeed Detection Timing ........................................................................T-2
2. MALFUNCTION D ETECTION ............. ... .............. ............... ............... .............T-2
3. SENSOR CHECK ..................................... .............. ............................ .............T-3
3-1. Sensor C h e ck Sc reen ..................... .. ........................... ............... .............T-3
iii
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iv
Safety Precautions for Inspection and Service
When performing inspection and service procedures, observe the following precautions to
prevent accidents and ensure utmost safety.
Depending on the model, some of the precautions given in the following do not apply.
✽
Different markings are used to denote specific meanings as detailed below.
Indicates a potentially hazardous situation which, if not avoided,
WARNING
CAUTION
The following graphic symbols are used to give instructions that need to be observed.
Used to call the service technician’s attention to what is graphically represented
inside the marking (including a warning).
Used to prohibit the service technician’s from doing what is graphically represented inside the marking.
Used to instruct the service technician’s to do what is graphically represented
inside the marking.
1. Always observe precautions.
Parts requiring special attention in this product will include a label containing the
•
mark shown on the left plus precautionary notes. Be sure to observe the precautions.
Be sure to observe the “Safety Information” given in the Operator’s Manual.
•
could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. It may also be used to
alert against unsafe practices.
WARNING
2. Before starting the procedures, be sure to unplug the power cord.
This product contains a high-voltage unit and a circuit with a large current
•
capacity that may cause an electric shock or burn.
The product also contains parts that can jerk suddenly and cause injury.
•
If this product uses a laser, laser beam leakage may cause eye damage or
•
blindness.
3. Use the specified parts.
For replacement parts, always use the genuine parts specified in the manufac-
•
turer’s parts manual. Installing a wrong or unauthorized part could cause
dielectric breakdown, overload, or undermine safety devices resulting in possible electric shock or fire.
Replace a blown electrical fuse or thermal fuse with its corresponding genuine
•
part specified in the manufacturer’s parts manual. Installing a fuse of a different
make or rating could lead to a possible fire. If a thermal fuse blows frequently,
the temperature control system may have a problem and action must be taken
to eliminate the cause of the problem.
P-1
4. Handle the power cord with care and never use a multiple outlet.
Do not break, crush or otherwise damage the power cord. Placing a heavy
•
object on the power cord, or pulling or bending it may damage it, resulting in a
possible fire or electric shock.
Do not use a multiple outlet to which any other appliance or machine is con-
•
nected.
Be sure the power outlet meets or exceeds the specified capacity.
•
5. Be careful with the high-voltage parts.
A part marked with the symbol shown on the left carries a high voltage. Touch-
•
ing it could result in an electric shock or burn. Be sure to unplug the power cord
before servicing this part or the parts near it.
6. Do not work with wet hands.
Do not unplug or plug in the power cord, or perform any kind of service or
•
inspection with wet hands. Doing so could result in an electric shock.
7. Do not touch a high-temperature part.
A part marked with the symbol shown on the left and other parts such as the
•
exposure lamp and fusing roller can be very hot while the machine is energized.
Touching them may result in a burn.
Wait until these parts have cooled down before replacing them or any surround-
•
ing parts.
8. Maintain a grounded connection at all times. (This item may not apply in the USA.)
Be sure to connect the ground wire to the ground terminal even when perform-
•
ing an inspection or repair. Without proper grounding, electrical leakage could
result in an electric shock or fire.
Never connect the ground wire to a gas pipe, water pipe, telephone ground wire,
•
or a lightning conductor.
9. Do not remodel the product.
Modifying this product in a manner not authorized by the manufacturer may
•
result in a fire or electric shock. If this product uses a laser, laser beam leakage
may cause eye damage or blindness.
10. Restore all parts and harnesses to their original positions.
To promote safety and prevent product damage, make sure the harnesses are
•
returned to their original positions and properly secured in their clamps and saddles in order to avoid hot parts, high-voltage parts, sharp edges, or being
crushed.
To promote safety, make sure that all tubing and other insulating materials are
•
returned to their original positions. Make sure that floating components mounted
on the circuit boards are at their correct distance and position off the boards.
P-2
CAUTION
1. Precautions for Service Jobs
A toothed washer and spring washer, if used originally, must be reinstalled.
•
Omitting them may result in contact failure which could cause an electric shock
or fire.
When reassembling parts, make sure that the correct screws (size, type) are
•
used in the correct places. Using the wrong screw could lead to stripped
threads, poorly secured parts, poor insulating or grounding, and result in a malfunction, electric shock or injury.
T ake great care to avoid personal injury from possible burrs and sharp edges on
•
the parts, frames and chassis of the product.
When moving the product or removing an option, use care not to injure your
•
back or allow your hands to be caught in mechanisms.
2. Precautions for Servicing with Covers and Parts Removed
Wherever feasible, keep all parts and covers mounted when energizing the
•
product.
If energizing the product with a cover removed is absolutely unavoidable, do not
•
touch any exposed live parts and use care not to allow your clothing to be
caught in the moving parts. Never leave a product in this condition unattended.
Never place disassembled parts or a container of liquid on the product. Parts
•
falling into, or th e liquid spilling ins id e, the mechanism c o u ld r e s u lt in a n el e ct ric
shock or fire.
Never use a flammable spray near the product. This could result in a fire.
•
Make sure the power cord is unplugged before removing or installing circuit
•
boards or plugging in or unplugging connectors.
Always use the interlock switch actuating jig to actuate an interlock switch when
•
a cover is opened or removed. The use of folded paper or some other object
may damage the interlock switch mechanism, possibly resulting in an electric
shock, injury or blindness.
3. Precautions for the Working Environment
The product must be placed on a flat, level surface that is stable and secure.
•
Never place this product or its parts on an unsteady or tilting workbench when
•
servicing.
Provide good ventilation at regular intervals if a service job must be done in a
•
confined space for a long period of time.
Avoid dusty locations and places exposed to oil or steam.
•
Avoid working positions that may block the ventilation ports of the product.
•
4. Precautions for Handling Batteries (Lithium, Nickel-Cadmium, etc.)
Replace a rundown battery with the same type as specified in the manufac-
•
turer’s parts manual.
Before installing a new battery, make sure of the correct polarity of the installa-
•
tion or the battery could burst.
Dispose of used batteries according to the local regulations. Never dispose of
•
them at the user’s premises or attempt to try to discharge one.
P-3
5. Precautions for the Laser Beam (Only for Products Employing a Laser)
Removing the cover marked with the following caution label could lead to possi-
•
ble exposure to the laser beam, resulting in eye damage or blindness. Be sure
to unplug the power cord before removing this cover.
If removing this cover while the power is ON is unavoidable, be sure to wear
•
protective laser goggles that meet specifications.
Make sure that no one enters the room when the machine is in this condition.
•
When handling the laser unit, observe the “Precautions for Handling Laser
•
Equipment.”
.
1167P001AA
DANGER
Invisible laser radiation when open.
AVOID DIRECT EXPOSURE
TO BEAM
0947-7127-01
1144D270AA
P-4
Other Precautions
To reassemble the product, reverse the order of disassembly unless otherwise specified.
•
While the product is energized, do not unplug or plug connectors into the circuit boards
•
or harnesses.
The magnet roller generates a strong magnetic field. Do not bring it near a watch, floppy
•
disk, magnetic card, or CRT tube.
An air gun and vacuum cleaner generates a strong electrostatic charge that can destroy
•
the ATDC sensor and other sensors. Before cleaning a component with one of these
devices, be sure to remove all the sensors. Otherwise, use a blower brush and cloth
when cleaning parts.
When handling circuit boards with MOS ICs, observe the “INSTRUCTIONS FOR HAN-
•
DLING THE PWBs WITH MOS ICs” (applicable only to the products using MOS ICs).
The PC Drum is a very delicate component. Observe the precautions given in “HAN-
•
DLING OF THE PC DRUM” because mishandling may result in serious image problems.
Note that replacement of a circuit board may call for readjustments or resetting of partic-
•
ular items, or software installation.
After completing a service job, perform a safety check. Make sure that all parts, wiring
•
and screws are returned to their original positions.
Check the area surrounding the service site for any signs of damage, wear or need of
•
repair.
Do not pull out the toner hopper while the toner bottle is turning. This could result in a
•
damaged hopper motor or locking mechanism.
If the product is to be run with the front door open, make sure that the toner hopper is in
•
the locked position.
P-5
Used Batteries Precautions
ALL Areas
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to the manufacturer ’s instructions.
Germany
Explosionsgefahr bei unsachgemäßen Austausch der Batterie.
Ersatz nur durch denselben oder einen vom Hersteller empfohlenen ähnlichen typ.
Entsorgung gebrauchter batterien nach Angaben des Herstellers.
France
Ily a danger d’explosion s’ily a remplacement incorrec de la batterie.
Remplacer uniquement avec une batterie du meme type ou d’un type équivalent recommande par le constructueur.
Mettre au rebut les batteries usageés conformément aux instructions du fabricant.
Denmark
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering Udskiftning må kun ske med batteri af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
Norway
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens instru ksj oner.
CAUTION
VORSICHT!
ATTENTION
ADVARSEL!
ADVARSEL
Sweden
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion .
Finland
Paristo voi räjähtää, los se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä Käytetty paristo
valmistajan ohjeiden mukaisesti.
VARNING
VAROlTUS
P-6
GENERAL
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1. SPECIFICATIONS
Type : Front Loading Type LCT
Type of Paper : Plain paper
Paper Size : B5C, A4C, Letter C
Paper Weight :
Registration : Center
Paper Capacity : 2,500 sheets (1250
Power Requirements : DC24 V ± 10 %, DC5.1 V ± 5 % (supplied from copier)
Dimensions : Width.......535 mm or 21 in
Weight : 17 kg or 37-1/2 lbs.
64 to 90 g/m
Depth ......568 mm or 22-1/4 in
Height .. .. .284 mm or 11-1/4 in
2
or 17 to 24 lbs.
2)
×
2. PARTS IDENTIFICATION
2
1
7
1. Lift 2
2. Vertical Transport Rolls
3. Right Side Door
4. Separator Roll
6
5. Feed Roll
6. Lift 1
7. Front Cover
G-1
4
5
3
4659M001AA
3. CROSS-SECTIONAL VIEW
1
1. Lift 2
2. Paper Take-Up Roll 2
3. Lift 1
4. Paper Take-Up Roll 1
4. DRIVE SYSTEM
Paper Take-Up Drive Mechanism
2345 6
7
8
4659M007AA
5. Vertical T ransport Roller
6. Vertical T ransport Roll
7. Feed Roll
8. Separator Roll
Vertical Transport Drive Mechanism
Lift Drive Mechanism
4659M002AB
G-2
5. ELECTRICAL COMPONENTS LAYOUT
SIDE
RCL
PWB-A
RS1
BCL
FRONT
RSEN
P1CL
LS1
S1
HMOT
RS2
EMOT
Symbol Name Symbol Name
PWB-A
LCT Control Board
LCT Transport Motor
HMOT
LCT Lift-Up Motor
EMOT
Paper Take-Up Clutch 1
P1CL
Paper Take-Up Clutch 2
P2CL
Separator Clutch
BCL
Registration Clutch
RCL
LCT Paper T ake-Up Sensor
PPS0
Paper Empty Sensor 1
PPS1
P2CL
FRONT
LS2
PPS1
EMP
Paper Standby Position Sensor
S1
Registration Sensor
RSEN
Paper Empty Sensor 2
EMP
Side Cover Set Sensor
SIDE
LCT Set Sensor
Paper Near Empty Sensor 1
RS1
Paper Near Empty Sensor 2
RS2
Lift-Up Sensor 1
LS1
Lift-Up Sensor 2
LS2
PPS0
4659M003AA
G-3
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G-4
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