Oki KN-4530 User manual

SERVICE MANUAL
BRIDGE UNIT
KN-4530
File No. SME11003300
R110821K3300
Ver00_2011_09

© 2011 OKI DATA CORPORATION All rights reserved
Under the copyright laws, this manual cannot be reproduced in any form without prior written permission
of OKI DATA CORPORATION.

General Precautions for Installation/Servicing/Maintenance
for KN-4530
The installation and service shall be done by a qualified service
technician.
1) When installing the KN-4530, be sure to follow the instructions described in the unpacking/set-up
procedure for the KN-4530.
2) The KN-4530 should be installed by an authorized/qualified person.
3) The KN-4530 is quite heavy and weighs approximately 3.7 kg (8.16 lb), therefore pay full attention
when handling it.
4) Before starting installation, servicing or maintenance work, be sure to turn OFF and unplug the
equipment first.
5) Be sure to fix and plug in the power cable securely after the installation so that no one trips over it.
6) Unplug the power cable and clean the area around the prongs of the plug and socket outlet once a
year or more. A fire may occur when dust lies on this area.
7) When selecting the installation site, avoid placing the finisher / hole punch unit and equipment on
different levels or inclined floors.
8) When servicing or maintaining the KN-4530, be careful about the rotating or operation sections such
as gears, pulleys, sprockets, cams, belts, etc.
9) When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise
noted in this manual or other related materials.
Be careful not to reassemble small parts such as screws, washers, pins, E-rings, toothed washers to
the wrong places.
10)Basically, the machine should not be operated with any parts removed or disassembled.
11)Delicate parts for preventing safety hazard problems (such as switches, sensors, etc. if any) should
be handled/installed/adjusted correctly.
12)Use suitable measuring instruments and tools.
13)During servicing or maintenance work, be sure to check the serial No.plate and other cautionary
labels (if any) to see if they are clean and firmly fixed.
If not, take appropriate actions.
14)The PC board must be stored in antistatic envelope and handled carefully using a wristband,
because the ICs on it may be damaged due to static electricity.
Before using the wrist band, pull out the power cord plug of the equipment and make sure that there
is no uninsulated charged objects in the vicinity.
15)For the recovery and disposal of used KN-4530, consumable parts and packing materials, follow the
relevant local regulations/rules.
16)After completing installation, servicing and maintenance of the KN-4530, return the KN-4530 to its
original state, and check operation.

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
CONTENTS
1
CONTENTS
1. SPECIFICATIONS......................................................................................................... 1-1
2. GENERAL DESCRIPTION............................................................................................ 2-1
2.1 Sectional View ..................................................................................................................... 2-1
2.2 Electric Parts Layout............................................................................................................ 2-2
2.3 Symbols and Functions of Various Components................................................................. 2-3
3. DESCRIPTION OF OPERATIONS ............................................................................... 3-1
3.1 Overview.............................................................................................................................. 3-1
4. DISASSEMBLY AND ASSEMBLY ............................................................................... 4-1

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
CONTENTS
2

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
SPECIFICATIONS
1 - 1
1
1. SPECIFICATIONS
Item Contents Remarks
Paper size A3, A4, A4-R, A5-R, B4, B5, B5-
R, FOLIO, LD, LG, LT,
LT-R, ST-R, COMPUTER,
13”LG, 8.5”x8.5”, 8K, 16K,
16K-R, A6-R, 305x457mm,
12”x18” (Full Bleed),
320x450mm, 320x460mm
Paper weight 64g/m2to 256g/m2
17 lb. Bond to 94.5 lb. Cover
Special paper Tracing paper, OHP film, Labels,
Tab paper
Dimensions W440 x D440 x H130 (mm)
Weight Approx. 3.7 Kg (Approx. 8.16
lbs.)
Bundled Solenoid cover (1 pc.)
Gap cover (1 pc.)
Screws (6 pcs.)
Ferrite core (1 pc.)
M4 x 10: 2 pcs.
M3 x 8: 2 pcs.
M4 x 12: 1 pc.
Preventive maintenance
parts
None

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
SPECIFICATIONS
1 - 2

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
GENERAL DESCRIPTION
2 - 1
2
2. GENERAL DESCRIPTION
2.1 Sectional View
Transport roller Transport sensor-1
Transport sensor-2 Cover open/close
detection switch
Paper full
detection sensor
Transport roller

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
GENERAL DESCRIPTION
2 - 2
2.2 Electric Parts Layout
S1
SW1
SOL1
S2
S3

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
GENERAL DESCRIPTION
2 - 3
2
2.3 Symbols and Functions of Various Components
Symbol Name Function P-I Remarks
S1 Transport sensor-1 Detecting paper on transport path
(entrance side)
S2 Transport sensor-2 Detecting paper on transport path
(exit side)
S3 Paper full detection sensor Detecting paper full on the inner tray
SW1 Cover open/close detection switch Detecting open/close of bridge unit
jam access cove
SOL1 Gate solenoid Switching paper transport path

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
GENERAL DESCRIPTION
2 - 4

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
DESCRIPTION OF OPERATIONS
3 - 1
3
3. DESCRIPTION OF OPERATIONS
3.1 Overview
This unit transports paper from the exit section of the equipment to the finisher. The transport rollers
which comprise the bridge unit are rotated by the drive from the host machine. This unit has a switching
gate on its entrance section which decides whether the transported paper from the exit roller of the host
machine is transported to the finisher or to the inner tray. The gate operates with ON/OFF of the gate
solenoid. The sensor which detects the paper full on the receiving tray is also equipped
Timing belt
Timing belt
Drive gear(G27/P20)
Drive gear(G27/P20)
Pulley(P20)One-way Pulley(P20)

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
DESCRIPTION OF OPERATIONS
3 - 2

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
DISASSEMBLY AND ASSEMBLY
4 - 1
4
4. DISASSEMBLY AND ASSEMBLY
Electrical Parts
[A] Bridge unit transport sensor-1
[B] Bridge unit transport sensor-2
(1) Take off the bridge unit.
(2) Disconnect 1 connector, release latches and
take off the bridge unit transport sensor-1.
Fig. 4-1
(1) Take off the bridge unit.
(2) Disconnect 1 connector, release latches and
take off the 1 bridge unit transport sensor-2.
Fig. 4-2
Transport sensor-1
Connector
Transport sensor-2
Connector

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
DISASSEMBLY AND ASSEMBLY
4 - 2
[C] Cover open/close detection switch
[D] Paper full detection sensor
(1) Disconnect 1 connector, release latches and
take off the cover open/close detection
switch.
Fig. 4-3
(1) Take off the bridge unit.
(2) Remove 1 screw and take off the sensor
cover.
Fig. 4-4
(3) Disconnect 1 connector, release latches and
take off the paper full detection sensor.
Fig. 4-5
Cover open/close detection switch
Connector
Sensor cover
Screw Actuator
Paper full
detection sensor
Connector

© 2011 OKI DATA CORPORATION All rights reserved KN-4530
DISASSEMBLY AND ASSEMBLY
4 - 3
4
[E] Gate solenoid
(1) Take off the bridge unit.
(2) Disconnect 1 connector, remove 1 screw and
take off the gate solenoid downward.
Fig. 4-6
(3) Take off the plunger.
Fig. 4-7
Connector
Solenoid
Screw
Plunger

KN-4530 © 2011 OKI DATA CORPORATION All rights reserved
DISASSEMBLY AND ASSEMBLY
4 - 4