Toshiba MY-1016 User manual

STACK FEED BYPASS
MY-1016
File No.31100017

General Precautions for Installation/Servicing/Maintenance for the MY-1016
The installation and service should be done by a qualified service technician.
1. When installing the MY-1016 to the Plain Paper Copier, be sure to follow the instructions described in
the “Unpacking/Set-Up Procedure for the MY-1016” booklet which comes with each unit of the
MY-1016.
2. The MY-1016 should be installed by an authorized/qualified person.
3. Before starting installation, servicing or maintenance work, be sure to turn off and unplug the copier
first.
4. When servcing or maintaining the MY-1016, be careful about the rotating or operation sections such
as gear, pulleys, sprockets, cams, belts, etc.
5. 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.
6. Basically, the machine should not be operated with any parts removed or disassembled.
7. Delicate parts for preventing safety hazard problems (such as breakers, thermofuses, fuses, door
switches, sensors, etc.if any) should be handled/installed/adjusted correctly.
8. Use suitable measuring instruments and tools.
9. 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.
10. 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.Before using the wrist band, pull out
the power cord plug of the copier and make sure that there is no uninsulated charged objects in the
vicinity.
11. For the recovery and disposal of used MY-1016, consumable parts and packing materials, it is rec-
ommended that the relevant local regulations/rules should be followed.
12. After completing installation, servicing and maintenance of the MY-1016, return the MY-1016 to its
original state, and check operation.
Copyright 2000
TOSHIBA TEC CORPORATION

October 2000 © TOSHIBA TEC 1 MY-1016 CONTENTS
CONTENTS
1. SPECIFICATIONS ...................................................................................................... 1-1
2. OUTLINE .................................................................................................................... 2-1
2.1 Names ofVarious Components ......................................................................................... 2-1
2.2 Layout of Electrical Parts.................................................................................................. 2-2
2.3 Harness Connection Diagram............................................................................................ 2-3
3. OPERATIONAL DESCRIPTION................................................................................ 3-1
3.1 GeneralOperation ............................................................................................................. 3-1
3.2 Block Diagram .................................................................................................................. 3-1
3.3 Detection of Abnormal Status ........................................................................................... 3-2
3.3.1 Paper jam detection ............................................................................................... 3-2
3.4 Flow Charts ...................................................................................................................... 3-3
4. MECHANICAL DESCRIPTION.................................................................................. 4-1
4.1 Paper Feed System .......................................................................................................... 4-1
4.2 Drive System .................................................................................................................... 4-2
5. CIRCUIT DESCRIPTION ........................................................................................... 5-1
5.1 Meaning of Signals ........................................................................................................... 5-1
5.2 Timing Chart ..................................................................................................................... 5-2
6. DISASSEMBLY AND REPLACEMENT..................................................................... 6-1

October 2000 © TOSHIBA TEC 1 - 1 MY-1016 SPECIFICATIONS
1. SPECIFICATIONS
Function : Pickup roller drop and paper feed roller method
Paper : Continuousfeed 64 to 80g/m2(17 to 21 lbs)
: Single sheet feed 80 to 163g/m2 (21 to 43 lbs)
Transport speed : 260 mm/sec.
Max. capacity : 11 mm (100 sheets)
Dimensions : 120 (W) x 485 (D) x 227 (H) mm
Weight : Approx. 2.5 kg
Power supply : 5VDC, 24VDC (Supplied from copier)

October 2000 © TOSHIBA TEC 2 - 1 MY-1016 OUTLINE
2. OUTLINE
2.1 Names ofVarious Components
SFB 02-01-01
SFB pickup roller
SFB document guide F SFB feed sensor (Arm)
SFB document tray
SFB document guide R

MY-1016 OUTLINE 2 - 2 October 2000 © TOSHIBA TEC
2.2 Layout of Electrical Parts
SEN1
CL1
PSS
SFB 02-02-01
Symbols and functions of various devices
Name
SET-SEN
SFB feed sensor
MPU-CLT
SFB clutch
PSS-PWA
SFB paper size sensor
Function
Detects the loading of paper.
Transmits driving force to the rollers to pick up
and transport the paper.
Paper size detection.
Symbol
SEN1
CL1
PSS

October 2000 © TOSHIBA TEC 2 - 3 MY-1016 OUTLINE
2.3 Harness Connection Diagram
Relay PWA
CN301
5 4 3 2 1
1 2 3 4 5
5 4
SFB feed sensor
SFB
CN302 CN303
3 2 1
SFB paper size sensor
CN300
3 2 1
CN31
MPFCON1
SG 1
2
SG
24VSW 3
4
+5V
MPESON 5
6
MPSS2ON MPSS3ON 7
8
MPSS1ON 9
10MPSS0ON
1 2 3 4 5 6 7 8 9
10
SG 11
12MCONECT 11
12
CN304
12 11 10
9 8 7 6 5 4 3 2 1
1 2 3 4 5 6 7 8 9
10 11 12
SFB clutch
2 1
SFB 02-03-01

October 2000 © TOSHIBA TEC 3 - 1 MY-1016 OPERATIONAL DESCRIPTION
3. OPERATIONAL DESCRIPTION
3.1 General Operation
The SFB is a bypass feed unit mounted on the right side of the copier. This unit has no PWA and the
operation and detection signals are sent to the MAIN PWA through the RELAY PWA. The unit is controlled
by the MAIN PWA.
3.2 Block Diagram
The SFB consists of the one switch, one magnetic clutch, and paper size sensor. These signals connect
to the MAIN PWA through the relay cable and RELAY PWA. When the bypass feed is selected on the
copier side and paper is placed in the SFB, printing by the bypass feed is enabled.
CN31
MPES SFB feed sensor
SFB paper size sensor
MPFCON
SSIZE0-3
SFB
Relay PWA SFB clutch
SFB 03-02-01

MY-1016 OPERATIONAL DESCRIPTION 3 - 2 October 2000 © TOSHIBA TEC
3.3 Detection of Abnormal Status
3.3.1 Paper jam detection
The SFB has the SFB feed sensor to detect that the paper has been placed. When you press the Start key
on the copier after this sensor detects the presence of paper, the SFB clutch turns ON to start feeding. If
the paper has not reached the feed sensor on the copier side for a fixed time after feeding begins, the
program will judge it to be paper jamming and stop feeding. To reset the error state, once remove the paper
and turn the SFB feed sensor OFF.

October 2000 © TOSHIBA TEC 3 - 3 MY-1016 OPERATIONAL DESCRIPTION
3.4 Flow Charts
Start button ON
Transfer system control
YES
Process system control Optical system control
End of optical
system control
Main motor ON
Polygon motor ON
Process unit fan motor high speed rotation
Development bias ON
Separation bias ON
Charge bias ON
Discharge lamp ON
Main motor
OK?
SFB clutch ON
Retraction of carriage
Black shading
Exposure lamp ON
Stop of carriage
Advance of carriage
White shading
Scanning of document
Stop of carriage
Exposure lamp OFF
Retraction of carriage
Stop of carriage
End of process
system control
Polygon motor OFF
Laser ON
Transfer bias ON
Transfer guide bias ON
Laser OFF
Transfer bias OFF
Transfer guide bias OFF
NG
Paper jam
"E12"
NG
Paper jam
"E01"
NG
Paper jam
"E02"
NO
Service call
"C01"
YES
Polygon motor
OK? NO
Service call
"CA1"
OK
SFB feed sensor
check
YES
Remaining
copy count 0?
OK
Exit sensor
check 1
NO
NO
Service call
"CA2"
YES
HSYNC
OK
YES
Remaining
copy count 0?
OK
Exit sensor
check 2
A
SFB clutch OFF
Registration roller
clutch OFF
Registration roller
clutch ON
NO

MY-1016 OPERATIONAL DESCRIPTION 3 - 4 October 2000 © TOSHIBA TEC
A
Charge bias OFF
Main motor OFF
Development bias OFF
Separation bias OFF
Discharge lamp OFF
Process unit fan motor low speed rotation
Standby

October 2000 © TOSHIBA TEC 4 - 1 MY-1016 MECHANICAL DESCRIPTION
4. MECHANICAL DESCRIPTION
4.1 Paper Feed System
Paper Pickup Operation
When you place the paper, the arm of the SFB feed sensor is pushed in causing the sensor to turn ON
(paper present). When you press the Start button on the copier to turn the gear on the copier side, the
gear of the SFB also turns and the SFB clutch turns ON, causing the SFB pickup roller to lower and pull
in the paper.
SFB 04-01-01
Flow of paper
SFB pickup roller
SFB feed sensor

MY-1016 MECHANICAL DESCRIPTION 4 - 2 October 2000 © TOSHIBA TEC
4.2 Drive System
The SFB is driven from the copier through the gear. When the SFB clutch turns ON, the rotation on the
copier side is transmitted to the SFB feed roller. The SFB pickup roller is connected to the SFB feed roller
through the belt. When the SFB feed roller turns, the SFB pickup roller lowers and starts picking up. When
the paper is pulled in, the SFB clutch turns OFF and the SFB pickup roller returns to its original position.
SFB 04-02-01
Flow of paper
SFB clutch

October 2000 © TOSHIBA TEC 5 - 1 MY-1016 CIRCUIT DESCRIPTION
5. CIRCUIT DESCRIPTION
5.1 Meaning of Signals
The SFB feed sensor is a photo sensor which detects that the paper has been placed in the bypass tray.
The signal is usually at“High”level (no paper present) and goes LOW when the paper is placed. This signal
is sent to the MAIN PWA through the relay cable and RELAY PWA.
SFB clutch is an operation signal for the clutch to transmit driving from the copier to the SFB. The signal
output from IC36 (MFPCON) on the MAIN PWA connects to the transistor (Q16) on the RELAY PWA.
When the signal is at “High” level, Q16 turns ON to drive the clutch, causing the pickup roller to lower and
pull in the paper.
The SFB paper size sensor detects the width of the paper placed in the tray of the SFB. The brush
attached to the paper width guide is touching the pattern on the PWA, and one of the MPSS0 - 3 signals is
detected according to the position to which the paper width guide is slid. MPSS0 goes LOW at the
narrowest position, and MPSS3 at the widest position.(When each width sensor is at“Low”level, that width
is detected.) Since the detection areas overlap as shown below, two signals may be detected at the same
time depending on the position of the paper width guide
A4 Series LT Series MPSS 0 MPSS 1 MPSS 2 MPSS 3
A4 LT H H H L
A4-R LT-R H H L H
A5-R ST-R H L H H
A6 - L L H H
B4 COMP H H L L
B5-R - H L L H
B6 - L L H H
Signal name Part name Functional description Status Note
MPESON SFB feed sensor Detects the loading of paper Photo sensor
MPFCON SFB clutch Transmits driving force to Low: ON Magnetic
the rollers to pick up and clutch
transport the paper
MPSS 0-3 ON SFB paper size Paper size detection Low: Detection PWA pattern
sensor

MY-1016 CIRCUIT DESCRIPTION 5 - 2 October 2000 © TOSHIBA TEC
SFB clutch
SFB feed sensor
Feed sensor
610ms
1.84s
2.65s
SFB 05-02-01
The values are data (reference values) applicable when the A4 size paper is used.
5.2 Timing Chart

October 2000 © TOSHIBA TEC 6 - 1 MY-1016 DISASSEMBLY AND REPLACEMENT
6. DISASSEMBLY AND REPLACEMENT
[A] SFB assembly/SFB cover
1. Remove 2 screws and detach SFB cover.
Fig. 6-1
2. Remove one screw and detach harness fixing
plate.
3. Detach one connector, remove one screw, and
detach the ground wire.
Fig. 6-2
4. Remove 2screws, release2 hooks, andremove
SFB assembly.
Fig. 6-3
[B] SFB hinge unit
1. Remove SFB cover.(See Fig.6-1)
2. Release one clamp and detach the harness.
3. Remove 2 screws, slide SFB hinge unit in the
direction of the arrow, release one hook, and re-
move SFB hinge unit.
Fig. 6-4
Screw
SFB cover
Connector
Screw
Harness
fixing plate
Ground wire
Screw
SFB assembly
Screw
Hook
Harness
Clamp
SFB hinge unit
Screw
245-1
245-2
246
247

MY-1016 DISASSEMBLY AND REPLACEMENT 6 - 2 October 2000 © TOSHIBA TEC
Notes: For installation, follow the procedure de-
scribed below.
1 Insert SFB hinge shaft into SFB docu-
ment tray assembly.
2 Turn SFBhingeunit by180degrees,hook
it to SFB, and fix it with 2 screws.
Fig. 6-5
[C] SFB document tray assembly
1. Remove SFB cover.(See Fig. 6-1)
2. Detach one connector and release 2 clamps.
3. Remove SFB hinge unit. (See Fig. 6-4)
4. Release the stud and remove SFB document
tray assembly.
Fig. 6-6
[D] SFB document tray upper/SFB document tray lower/
SFB document tray support/SFB PWA plate/
SFB document guide flange
1. Remove SFB document tray assembly.
(See Fig. 6-6)
2. Remove 3 screws, release 7 hooks, and detach
SFB document tray upper.
3. Remove SFB document tray support.
Fig. 6-7
Hook
SFB hinge unit
Screw
Connector
Stud
SFB document
tray assembly
Hook
Hook
SFB document
tray lower
SFB document
tray support
Screw
Screw SFB document tray upper
248
249
250-1
4. Release 4 hooks and detach the SFB document
tray 2nd support.
Fig. 6-8 250-2

October 2000 © TOSHIBA TEC 6 - 3 MY-1016 DISASSEMBLY AND REPLACEMENT
Note: Set SFB document guide flange so that the
convexity of SFB PWA plate is positioned
as shown right when SFB PWA plate is
mounted.
5. Remove one screw and remove SFB pinion
plate.
6. Removeone screwand removeSFB PWA plate.
7. Remove SFB document guide flange.
Fig. 6-9
Fig. 6-11
[E] SFB cover/SFB brake pad assembly
1. Remove SFB hinge unit. (See Fig. 6-1 to 6-4)
2. Remove SFB document tray assembly.
(See Fig. 6-6)
3. Remove 4 screws, release 2 tabs, and remove
SFB brake pad assembly.
Note: For reassembly, mount the screws in the
order shown right.
Fig. 6-12
Screw SFB pinion plate
SFB PWA plate
SFB document
guide flange
Screw
SFB PWA plate
SFB document
guide flange
Screw
Screw
SFB brake pad
assembly
250-3
250-4
251
Notes: 1. Put 0.2 grams of silicon oil (TSF451) on
the side of the guide rail.
Never put silicon oil on the paper feed
side.
2. Put 0.05 grams of silicon oil (TSF451)
inside the SFB document guide rack.
Fig. 6-10
250-5

MY-1016 DISASSEMBLY AND REPLACEMENT 6 - 4 October 2000 © TOSHIBA TEC
[F] SFB clutch pulley/SFB flange wheel
1. Remove SFB hinge unit. (See Fig. 6-1 to 6-4)
2. Remove SFB document tray assembly.
(See Fig. 6-6)
3. Detach SFB feed cover.
(See Fig. 6-11 and 6-13)
4. Detach stop ring and remove bushing.
5. Release 3 clamps and detach the harness.
6. Remove one screw and detach the ground wire. Fig. 6-15
7. Remove 2 screws, release 2 tabs, slide SFB
feed roller assembly in the direction of the ar-
row, and remove SFB clutch pulley assembly.
Note: Before attaching the SFB feed roller assem-
bly, loosen 2 screws securing the SFB feed
roller fixing plate.
Attach the SFB brake pad assembly (See
Fig. 6-10), then fix the SFB feed roller fixing
plate in place.
Stop ring
Bushing
Screw Ground wire Clamp
Harness
Bushing
SFB clutch
pulley assembly
SFB feed roller
assembly
Screw
SFB clutch motor
254
Clamp
5. Remove 2 screws, release 2 tabs, and detach
SFB feed cover.
Fig. 6-14
SFB feed cover
Screw
SFB feed assembly
Screw 253
Fig. 6-16
255
4. ReleaseSFBpadspringandremoveSFB brake.
Note: Clean the SFB brake pad with a cloth moist-
ened with alcohol by pressing hard, and go-
ing back and forth on the brake pad more
than 20 times.
Fig. 6-13
SFB brake
SFB pad spring 252
SFB brake pad
SFB feed roller
fixing plate

October 2000 © TOSHIBA TEC 6 - 5 MY-1016 DISASSEMBLY AND REPLACEMENT
7. Remove one screw and remove roller bracket.
8. Detach E-ring and remove bushing.
9. Remove SFB feed roller shaft assembly.
Note: Be sure to attach the spring when attach-
ing the SFB feed roller shaft assembly.
[G] SFB feed roller shaft assembly
1. Remove SFB hinge unit. (See Fig. 6-1 to 6-4)
2. Remove SFB document tray assembly.
(See Fig. 6-6)
3. Detach SFB feed cover.
(See Fig. 6-11 and 6-13)
4. Remove SFB feed roller assembly.
(See Fig. 6-14 and 6-15)
5. Detach one connector, loosen one screw, and
remove SFB clutch motor. Fig. 6-17
Fig. 6-19
Connector
Screw
SFB clutch motor
Screw
Spring
E-ring
Bushing
SFB feed
roller shaft assembly
256
257-2
6. Remove one screw and remove guide plate R.
Fig. 6-18
Screw
Guide plate R
257-1