Toshiba MP-4003 User manual

SERVICE MANUAL
MP-4003
LARGE CAPACITY FEEDER
File No.31100203
2002-06

Copyright 2002
TOSHIBA TEC CORPORATION

GENERAL PRECAUTIONS FOR INSTALLATION/SERVICE/
MAINTENANCE FOR LARGE CAPACITY FEEDER MP-4003
1. When installing the Large Capacity Feeder MP-4003 to the Copier, be sure to follow the instructions
described in the “Unpacking/Set-Up Procedure for the MP-4003” booklet which comes with each
unit of the MP-4003.
2. Installed only by an authorized/qualified person.
3. When transporting/installing the MP-4003, employ two persons. The MP-4003 is fairly heavy and
weights approximately 40 kg (89 lb), therefore pay full attention when handling it.
4. Before starting installation, servicing or maintenance work, be sure to turn off and unplug the
copier first.
5. Supplied with power from the copier, requiring no additional power source.
6. Grounded to the specified positions on the machine frame.
7. When serving or maintaining, be careful about the rotating or operating sections such as gears,
pulleys, sprockets, cams, belts, etc.
8. When parts are disassembled, reassembly is basically the reverse of disassembly unless otherwise
noted in this manual or other related documents. Be careful not to reassemble small parts such as
screws, washers, pins, E-rings, toothed washers to the wrong places.
9. Basically, the machine should not be operated with any parts removed or disassembled.
10. Delicate parts for preventing safety hazard problems (such as thermofuses, door switches sensors,
etc. if any) should be handled/installed/adjusted correctly.
11. During servicing or maintenance work, be sure to check the nameplate and other cautionary labels (if
any) to see if they are clean and firmly stuck. If not, take appropriate actions.
12. Use suitable measuring instruments and tools.
13. The PC board must be stored in an anti-electrostatic bag and handled carefully using a wristband,
because the ICs on it may be damaged due to static electricity.
Caution: Before using the wrist band, pull out the power cord plug of the copier and make sure that
there is no uninsulated objects in the vicinity.
14. For the recovery and disposal of used the large capacity feeder, consumable parts, packing materials,
used batteries, and RAM-ICs including litium batteries, it is recommended that the relevant local
regulations/rules.

JUNE 2002 © TOSHIBA TEC I MP-4003 CONTENTS
CONTENTS
1. SPECIFICATIONS .......................................................................................... 1-1
2. OUTLINE OF THE MACHINE......................................................................... 2-1
2.1 Front Sectional View ...................................................................................................... 2-1
2.2 Electrical Parts Layout ................................................................................................... 2-2
2.3 Electrical Parts .............................................................................................................. 2-4
3. GENERAL OPERATION ................................................................................. 3-1
3.1 Description of Operation ................................................................................................ 3-1
3.2 Error Detection............................................................................................................... 3-2
3.3 Flow Chart ..................................................................................................................... 3-3
3.4 Timing Chart .................................................................................................................. 3-5
4. DISASSEMBLY AND REPLACEMENT/ADJUSTMENT................................... 4-1
4.1 Covers ........................................................................................................................... 4-1
4.2 Tray Unit ......................................................................................................................... 4-2
4.3 Feeder Unit..................................................................................................................... 4-3
4.4 Electrical Parts .............................................................................................................. 4-4
4.5 Rollers............................................................................................................................ 4-6
4.6 Side Guides / End Guide................................................................................................ 4-7
4.7 Tray wire......................................................................................................................... 4-8
4.8 Sidewise Deviation Adjustment .................................................................................... 4-11
4.9 Stopper Adjustment ..................................................................................................... 4-11
5. ELECTRICAL CIRCUIT .................................................................................. 5-1
5.1 Harness Diagram ........................................................................................................... 5-1
5.2 Circuit Diagram .............................................................................................................. 5-2
5.3 PC Board........................................................................................................................ 5-5
6. PERIODIC MAINTENANCE ........................................................................... 6-1

JUNE 2002 © TOSHIBA TEC 1 - 1 MP-4003 SPECIFICATIONS
1. SPECIFICATIONS
Function
Replenishing method ......Front loading method
Paper .............................. Size: A4, B5, LT
Thickness: 64~209g/m2(17~110lbs. Index)
Capacity of tray .............. 4,000 papers (Stack height: within 428mm)
Dimensions .....................326 (W) X 599 (D) X 617 (H) mm (when connected to the copier)
Weight ............................ Approx. 40kg (89lbs)
Power supply...................DC5V, 24V (supplied from the copier)

JUNE 2002 © TOSHIBA TEC 2 - 1 MP-4003 OUTLINE OF THE MACHINE
2. OUTLINE OF THE MACHINE
2. 1 Front Sectional View
2
3456
78
9
10
11
12
13
15
14
16
1
NO. NAME NO. NAME
1 Transport motor (M1) 9 Tray sensor (S5)
2 Tray motor (M2) 10 Tray bottom sensor (S6)
3 Transport clutch (CL1) 11 LCF set sensor (S7)
4 Feed clutch (CL2) 12 Door switch (SW1)
5 Empty sensor (S1) 13 Pickup roller
6 Tray-up sensor (S2) 14 Feed roller
7 Feed sensor (S3) 15 Separation roller
8 FG-pulse sensor (S4) 16 Transport roller

JUNE 2002 © TOSHIBA TEC 2 - 2 MP-4003 OUTLINE OF THE MACHINE
2. 2 Electrical Parts Layout
CL1
CL1
CL2
CL2
S5
S5
M2
M2
S6
S6
SW1
SW1
S7
S7
PW
PW
A
S4
S4
M1
M1
S3
S3
S1
S1
S2
S2

JUNE 2002 © TOSHIBA TEC 2 - 3 MP-4003 OUTLINE OF THE MACHINE
2. 3 Electrical Parts
(1) Motors
SYMBOL NAME FUNCTION REMARKS
M1 TR-MTR Driving of the feeding and Brush motor
Transport motor transportation
M2 TRY-MTR Lifting/Lowering of the tray Brush motor
Tray motor
(2) Electromagnetic clutches
SYMBOL NAME FUNCTION REMARKS
CL1 TR-CLT Driving of the transportation
Transport clutch
CL2 FED-CLT Driving of the feeding
Feed clutch
(3) Switches/Sensors
SYMBOL NAME FUNCTION REMARKS
S1 EMP-SNR Detection of the presence or Photo interrupter
Empty sensor absence of paper
S2 TRY-UP-SNR
Detection of the tray upper limit
Photo interrupter
Tray-up sensor
position
S3 FED-SNR Detection of the paper Photo interrupter
Feed sensor transportation
S4 FG-PULS-SNR
Detection of the transport motor
Photo interrupter
FG-pulse sensor rotation number
S5 TRY-SNR Detection of the drawer Photo interrupter
Tray sensor installed
S6 TRY-BTM-SNR
Detection of the tray lower limit
Photo interrupter
Tray bottom sensor
position
S7 LCF-SET-SNR Detection of the LCF installed Photo interrupter
LCF-set sensor to the copier
SW1 DOOR-SW Safety switch Pushing switch
Door switch
(4) PC Board
SYMBOL NAME FUNCTION REMARKS
PWA PWA-F-LCF-555 Driving of the feeding
PC board Control of the tray driving

JUNE 2002 © TOSHIBA TEC 3 - 1 MP-4003 GENERAL OPERATION
3. GENERAL OPERATION
3. 1 Description of Operation
[A] From power ON to standby
(1) When the copier is turned ON, power is also supplied to the feed unit from the copier to start the pre-
running operation.The tray motor (M2) starts to rotate forward to lift the tray.
The tray motor (M2) stopped rotating and lifting the tray when the tray has been lifted and the tray-up
sensor (S2) has been turned ON (H: Sensor light path blocked by the actuator sensor). Papers are
assessed to be present when the empty sensor (S1) is turned ON (L:Passing the sensor light path )
while they are assessed to be absent when the empty sensor (S1) is turned OFF (H: Sensor light path
blocked).
(2) When the LCF is not being installed to the copier (LCF set sensor (S7): OFF) or when the drawer is
being pulled out (Tray sensor (S5): OFF), the tray lifting operation is not carried out. In this case, the
tray starts to be lifted and the same operation which is until the detection of the paper presense or
absense is carried out when it is installed to the copier and the drawer is inserted.
(3) When the feed sensor (S3) is turned ON (L: Passing the sensor light path), that is, when the paper is
remaining at the transport path, the LCF detects it as a paper jam and cannot operate.
[B] Standby state
(1) When a paper is detected to be present by the above-described operation, the LCF gets into a standby
state.
(2) When the tray unit is pulled out, the tray is automatically lowered because of its structure, and when it
is inserted once again, it is lifted.
[C] Feeding/Transporting operation from the start to the finish of the printing
(1) The [START] key is pressed when the copier decides that the feeding from the the LCF. Then, the
transport motor (M1) starts to drive after the feed motor of the copier has been turned ON.
(2) The feed clutch (CL2) is turned ON and pickup and feed rollers start to drive to feed a paper from the
tray.
(3) After the feeding starts, the transport clutch (CL1) is turned ON and the transport roller starts to drive
to transport the paper.
(4) When the leading edge of the paper has turned ON the feed sensor (S3), the feed clutch (CL2) is turned
OFF and stops the feeding operation.The paper transported by the transport roller is sent to the copier
side, where it is transported by the feed unit.
(5) When a specified time has passed after the trailing edge of the paper turned OFF the feed sensor (S3),
next paper can be fed.
(6) When carrying out a continuous printing, the above steps from (2) to (5) are repeated as many papers
as printed.
(7) When the printing has been finished, the feed motor of the copier stops rotating and the transport motor
(M1) is turned OFF to finish the feeding/transporting operation.

JUNE 2002 © TOSHIBA TEC 3 - 2 MP-4003 GENERAL OPERATION
3. 2 Error Detection
[A] Jam detection
In the following cases, the feed jam takes place.
(1) When the feed sensor (S3) is not turned ON in a specified time after the feeding has started.
(2) When each transport sensor of the copier does not operate (ON/OFF) in a specified time after the
feeding has started at the copier side.
[B] Call for service
(1) When the tray-up sensor (S2) is not turned ON in a specified time after the tray has started to be lifted.
[D] Tray operation during printing
(1) When 10~20 sheet of paper have been fed from the tray, the pickup roller is lowered down to a
specified height. The tay-up sensor (S2) detects this and the tray motor (M2) rotates forward to lift
the tray.

JUNE 2002 © TOSHIBA TEC 3 - 3 MP-4003 GENERAL OPERATION
3. 3 Flow Chart
(E19)
(E25)
(E25)
A
YES
NO
YES
NO
YES
NO
B
Press the [START] key
Transport system controlling
Copier feed motor ON
LCF transport motor ON
LCF feed clutch ON
LCF transport clutch ON
Is the LCF feed sensor ON?
Copier intermediate transport clutch ON
LCF feed sensor ON
Is the copier intermediate
transport sensor ON?
LCF feed sensor OFF
LCF transport clutch OFF
Is the copier registration
sensor ON?
Paper jam
Paper jam
Paper jam

JUNE 2002 © TOSHIBA TEC 3 - 4 MP-4003 GENERAL OPERATION
(E01)
(E02)
A
YES
NO
YES
NO
YES
NO
B
Copier intermediate transport clutch ON
Copier registration motor ON
Copier registration motor OFF
Is there no remaining copy?
Is the copier fuser unit
exit sensor ON?
LCF transport motor OFF
Copier feed motor OFF
Standby
Paper jam
Paper jam
Is the copier fuser unit
exit sensor OFF?

JUNE 2002 © TOSHIBA TEC 3 - 5 MP-4003 GENERAL OPERATION
3. 4 Timing Chart
(1) Timing at the LCF feeding: A4, 1 copy
0
75
180
180
385
570
690
800
800
1410
1650
3700
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration sensor
(unit: ms)

JUNE 2002 © TOSHIBA TEC 3 - 6 MP-4003 GENERAL OPERATION
(2) Timing at the LCF feeding: A4, 2 copies
04450
70
200
200
400
585
710
745 900 1185 1345
1740
865 1660
1435 1520 2170
825 1675 1760 2410
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration
sensor
(unit: ms)

JUNE 2002 © TOSHIBA TEC 3 - 7 MP-4003 GENERAL OPERATION
(3) Timing at the LCF feeding: B5, 1 copy
0
75
190
190
400
570
630
740
820
1370
1605
3640
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration sensor
(unit: ms)

JUNE 2002 © TOSHIBA TEC 3 - 8 MP-4003 GENERAL OPERATION
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration
sensor
04390
80
200
200
400
585
640
680 830 1160 1325
1665
790 1560
1370 1515 2100
825 1610 1760 2340
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(4) Timing at the LCF feeding: B5, 2 copies
(unit: ms)

JUNE 2002 © TOSHIBA TEC 3 - 9 MP-4003 GENERAL OPERATION
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration sensor
0
70
210
210
415
590
725
835
830
1460
1700
3750
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(5) Timing at the LCF feeding: LT, 1 copy
(unit: ms)

JUNE 2002 © TOSHIBA TEC 3 - 10 MP-4003 GENERAL OPERATION
(6) Timing at the LCF feeding: LT, 2 copies
Transport motor
Feed clutch
Transport clutch
Feed sensor
Copier intermediate
transport sensor
Copier registration
sensor
04450
80
195
195
400
585
715
755 910 1170 1330
1750
870 1650
1450 1520 2185
825 1690 1765 2420
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(unit: ms)

JUNE 2002 © TOSHIBA TEC 4 - 1 MP-4003 DISASSEMBLY AND REPLACEMENT
4.
DISASSEMBLY AND REPLACEMENT
/ADJUSTMENT
4. 1 Covers
[A] Front cover
(1) Pull out the drawer.
(2) Remove 4 screws and take off the front cover.
Note: When installing the front cover, fit the arm on the
latch lever.
[C] Upper cover
(1) Pull out the drawer.
(2) Remove the rear cover.
(3) Loosen 4 screws and take off the upper cover.
[B] Rear cover
(1) Remove 4 screws and take off the rear cover.
Arm
Front cover
Rear cover
Upper cover

JUNE 2002 © TOSHIBA TEC 4 - 2 MP-4003 DISASSEMBLY AND REPLACEMENT
[D] Right cover
(1) Remove 2 screws and take off the right cover
sliding it toward the front side.
4. 2 Tray Unit
(1) Pull out the drawer.
(2) Remove 1 screw and take off the stopper.
(3) Remove 4 screws (2 for the left side and 2 for
the right side) and take off the tray unit pulling it
upward.
Stopper
Left side
Right side
Right cover
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