STUDIO350/450 e-STUDIO352/452 e-STUDIO353/453
Trademarks
Service of Machines
Transportation / Installation
Main Service Parts for Safety
Contents
Scanner
11-1
12-4
12.4
12-5
12-7
Specifications
Approx seconds temperature 20C
System copy speed Copy mode Sec
Set 55.47 54.68 Sets 126.21 118.07
Sets 196.93 181.36
LCF-Option Stack height 137.5 mm x 2 equivalent to
Automatic duplexing unit Stackless, Switchback type
Sheets 64 to 80 g/m2 17 to 22 lb
80 g/m2 17 to 22 lb
Specifications
Accessories
STUDIO350/450
Options
2nd line for fax board
STUDIO352/353/452/453
07/11
Supplies
Radf
System List
STAPLE-2000
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Sectional View
Outline of the Machine
04/05
0 22 24 25 2 27 2
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Unit construction
Electric Parts Layout
Scanner unit Motor, sensor, lamp
A4 series
LT series
PC board, heater, thermostat, other part
ASD/AUD/CND/SAD/TWD models Standard NAD/MJD models Option
Control panel unit
Motor, sensor, lamp, heater, thermistor, thermostat
Process unit Motor, sensor, switch, PC board
Paper feeder unit
Laser unit
Bypass unit
Transport unit
Fuser unit
Automatic duplexing unit
CLT5 CLT6 CLT7 CLT8 HVT
Drive unit
STUDIO350/450
PC board unit
STUDIO352/353/452/453
Symbols and Functions of Various Components
Sensors and switches
CST-L-SW
CST-U-SW
SFB-SNR
SFB-FED-SNR
Solenoids
Electromagnetic clutches
PC boards
Thermistors and thermostats
Lamps and heaters
Others
Transformer
General Description
System block diagram
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Function of each board
Construction of boards Construction diagram of boards
Outline of the Machine
HVT
External covers Front cover
Installation and Replacement Covers and PC boards
Front left cover
Open the front cover Remove 1 screw and front left cover
Remove 7 screws and take off the rear cover
Rear cover STUDIO350/450
Front upper cover
Left upper cover
Right upper cover
Upper rear cover
Remove 2 screws and take off the receiving tray
Receiving tray
Tray back cover
Left cover
IH terminal cover
Left rear cover
Right front hinge cover
STUDIO350/352/353/450/452/453
Right lower cover
Right rear cover
Front right cover
PC boards
Logic PC board LGC board A-1 LGC board
LGC board unit
Hard disk / HDD cooling fan
SYS board cover
Remove 4 screws and take off the hard disk
Hard disk
System control PC board case SYS board case STUDIO350/450
HDD cooling fan
05/11
07/11
NIC board / System control PC board SYS board STUDIO350/450
Remove 10 screws, take off the SYS board
NIC board
SYS board
Switching power supply
Power supply cooling fan
High-voltage transformer
Noise filter
MR-3015 Reversing Automatic Document Feeder Radf
KD-1011 Paper Feed Pedestal PFP
Turn OFF the power and unplug the power Cable
KD-1012 Large Capacity Feeder LCF
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Lift up the equipment and take off the LCF
MJ-1022 Hanging finisher D-1 When PFP/LCF is not installed
Remove 2 screws Lift up the finisher and take it off
When PFP/LCF is installed
MJ-1023 Console finisher
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MJ-1024 Console finisher
MJ-6004 Hole punch unit
Outline of the Machine
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KN-3520 Bridge unit
Lift up the punch unit and take it off
MJ-5004 Job separator
Outline of the Machine
MJ-5005 Offset tray
MR-3018 Reversing Automatic Document Feeder Radf
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MJ-6101Hole punch unit
MJ-1101 Console finisher
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Remove 2 screws Take off the hole punch unit
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General Description of Copying Process
Copy Process
Example
Details of Copying Process
Image processing sec Tion Example CCD light Value of image
Magnet Magnetic roller Toner
30-100 µm
Additional Explanation
Charger
Because of moisture or malfunction of the transfer
Paper may not be separated from the drum surface
Separation charger during printing. As the result
Used to forcibly separate the paper which was left
Recovery blade Cleaning blade Drum rotation
Comparison with DP4500/3500
Description of Operation
Overview of Operation
Copying operation Bypass feed copying Interrupt copying
Warming-up
Drawer feed copying Upper drawer paper feeding
Ready state ready for copying
General Operation
Page
Bypass feed copying
Interruption copying
Press the Interrupt button
Types of abnormality
Detection of Abnormality
Description of abnormality
General Operation
Paper jam E010
Paper jam E010 → The copying operation is stopped. Timer
Paper jam E020
General Operation
Immediately after the power is turned on
Flow Chart
YES
Paper jam E00
Automatic paper feed copying
Ready
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Control Panel and Display Panel
Control Panel
Items Shown on the Display Panel
Display
Tray Full Ready
Saddle Stitch
Change Drawer To Correct Paper Size
Copying
Check Paper
Large Capacity Feeder Cannot Punch
This Size Paper
Department
Counter
To Correct Media Type Press Basic
According to the messages displayed
Radf
Structure
Dot matrix LCD circuit
System control PC board Control panel
Data Transmission
LED display circuit
Method of LED display ex Displaying Copy
Disassembly and Replacement
Hinge bracket
DSP board
KEY board
Remove 16 screws and take off the KEY board
Function
Scanner
Construction
Mirror-2 Mirror-3
Scan motor
Scanning drive circuit
Motdir
Motclk
Moten
Motref
Initialization at power-ON
General description
Control of Exposure Lamp
Exposure lamp
Control circuit for the exposure lamp
SLG board
Working conditions
General Description of CCD Control
Opto-electronic conversion
Shading correction
Principle of original size detection
Automatic Original Size Detection Circuit
Process of detection of original size
A4 Series LT Series
Stlt
APS-C APS-R
When the platen sensor is OFF
LED
Lens cover
Original glass
Automatic original detection sensor APS sensor A4 series
Protrusion
704L
LT series
Lens unit
Carriage-1
Remove 2 seals and release the cable
Rear side
With the position as shown in the figure
After the installation, move carriage-1
Fix it with a seal
Align the bent portion of the lamp
Rear sides Remove the carriage wires on both front
Carriage wire / Carriage-2
Mirror-1
INV board
Platen sensor / Carriage home position sensor
Mirrors-2
SLG board
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Followings are the boards used for image processing
Image Processing
Signal amplifi
Configuration
SLG Board
Features
Functions of image processing circuit
After correction
Example Reduction
Example Enlargement
2003 2008 Toshiba TEC Corporation All rights reserved
LGC Board
APC Auto Power Control
Laser Driving PC Board LDR board
ON/OFF control of the semiconductive laser
Laser Optical Unit
Drve PC board
Structure
Laser beam Drum
Devaton
Laser Optical Unit
Laser Diode
Light emission is started when the forward cur
Rent reaches or becomes larger than the threshold
Current and outputs the monitor current which is
Laser Optical Unit Cooling Fan
Polygonal Motor
Drive circuit of the polygonal motor
Laser optical unit
LRL PC board
Laser unit fan
20,2
Functions
Feeding system
Paper Feeding System
Paper Feeding System
Operation
Operation of bypass pickup roller
Operation of drawer pickup roller
Feed roller
Separation of paper
General operation From power-ON to ready status
Ready status
Bypass feeding
Paper feeding
IN1 IN2
Drive Circuit of Tray-up Motor
Bypass unit A-1 Bypass unit
Remove 2 screws and take off the right rear hinge cover
Screw
Open the side cover
Hinge assembly
Hinge assembly
Pull out the hinge assembly from the bypass tray
SFB board
Plate Bracket Spring
Bypass pickup solenoid
Solenoid
Solenoid arm
Bypass pickup roller
Bypass paper sensor
Bypass transport roller
Bypass feed roller
Bypass feed clutch
Bypass separation roller
Drive unit
Sensor plate
Bypass feed sensor
Disconnect 3 connectors
Disconnect the connector on the front side
Lower drawer feed sensor
Jam access cover
Connector
Lead wire
Terminal
Cover
Feed sensor
Upper drawer
Setscrew
Registration roller
Drive gear unit Screw Ring Bushing Registration Roller
Tray drive unit/Tray-up motor
Paper Feeding System
Upper transport clutch
Transport clutch upper/lower
Lower transport
Clutch
Attach the clutches to the shafts as shown on the right
Drawer detection switch upper/lower
Drawer feeding unit upper/lower H-1 Drawer feeding unit
Tray-up sensor
Separation roller
Paper stock sensor
Feed roller
Pickup roller
Drawer feed clutch
0.5mm
Drive System
10.3.1Main motor drive
Main Motor
Signal names are for the connector CN318 LGC board
10.3.2Control signals
Main motor
Registration clutch
Gear unit
Developer drive clutch
Drive System
Drum Related Section
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Detection standard line
Drum Related Section
Output Control Circuits of High-Voltage Transformer
Overview
Description of operations
CN30-B7 Hvdvr
Drum temperature detection circuit
Drum Temperature Detection Circuit
Temperature/Humidity Sensor
11.5.1General description
11.5.2Construction
Cleaner unit
Main charger B-1 Main charger
Main charger grid
Charger wire cleaning pad
Main charger wire
Drum
Cleaner Cleaning blade
Cleaning blade
Seal
Separation finger
Recovery blade
Exhaust fan / Sub-separation fan
Charger wire
Discharge LED
Developer unit cooling fan I-1 Developer unit cooling fan-2
Toner bag full detection sensor-2
Developer unit cooling fan unit-1
Developer unit cooling fan-1
Middle fan
Temperature / Humidity sensor
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Sectional view of developer unit
Development System
Functions
Drive Circuit of Toner Motor
STUDIO352/353/452/453 STUDIO350/450
Auto-Toner Circuit
Function of auto-toner sensor
Drve ndng
Adjustment using the drum thermistor
Adjustment using the temperature / humidity sensor
Developer material Discharge of developer material
Developer unit
Guide roller Front side
Rear side
Remove 1 E-ring and 4 gears Take off the guide roller
Guide roller
Drum thermistor
Auto-toner sensor
Developer sleeve
Replacement of Oil Seal
Replace the oil seal on the shaft on the de
Veloper sleeve rear side, if necessary
Mixer-2
Mixer-1
Oil seal
Bushing
Toner cartridge drive unit I-1 Toner cartridge drive unit
Toner motor
Toner cartridge detection switch
Rice grains on entire surface of the oil seal Evenly
Wipe off the excessive grease
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Fuser Unit / Paper Exit Section
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Fuser Unit / Paper Exit Section
13.4
Configuration
Circuit
13.4.1
13.4.2Heating principle of IH Heater
Image of current flowng from a to B
IH2 on
IH control circuit interface
VDD
IH1 on
FAX
Control of the surface temperature of the fuser belt
13.4.5Temperature detection section
Energy Saver
Reference
CPU
Checking timing Condition Temperature judged Error
H1ERR1 CPU PA2 H1ERR2 PA3
13.4.6Abnormality in the IH control circuit
IH error
Exit Motor Drive
Control Circuit of Exit Motor
Harness clamp
Fuser unit cooling fan
Exit finger
Exit sensor
Separation finger for pressure roller
Cleaning roller
Separation finger for fuser roller
Stepped screw
Fuser Unit / Paper Exit Section
IH coil
Pressure roller
Fuser roller
Thermistor
Thermostat
IH control PC board IH board
Take off the IH terminal cover Chapters 2.5.1 L
IH board cooling fan
IH board unit
Exit motor
Exit roller
Metal bushing
Take off the lower exit roller
Automatic Duplexing Unit ADU
Description of Operations
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Automatic Duplexing Unit
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PmentEqu
Timing chart for duplex copying from upper
Equpment
Drive of ADU
Yes
Yes
Screw Right rear hinge cover
Right front hinge cover
Snap pin
ADU inside rear cover
Tape
ADU inside
Paper guide
ADU opening / closing switch
ADU cover
Rear latch
Opening /Closing lever
Remove the screw and release the rear latch
ADU entrance sensor, ADU exit sensor
Rear latch
ADU motor
ADU driving PC board ADU board
ADU gear unit
Motor
ADU clutch
Upper transport roller
ADU clutch
Remove 2 bushings and take off the upper
Remove the clip on the front side
Pin
Belt
Middle transport roller
Lower transport roller
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Operation of DC Output Circuits
Power Supply Unit
Output Channel
Power Supply Unit
LGC
Fuse
PFP/LCF
SLG
STUDIO350/352/353/450/452/453 Power Supply Unit
Configuration of Power Supply Unit
Sequence of Power Supply
PWR-DN
PWR-EN
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AC Wire Harness
Power Supply Unit
PWA-F-SYS e-STUDIO350/450
PC Boards
STUDIO352/353/452/453
PWA-F-LGC e-STUDIO350/450 STUDIO352/353/452/453
PWA-F-SLG e-STUDIO350/450 STUDIO352/353/452/453
PWA-F-CCD
PWA-F-DSP e-STUDIO350/450 STUDIO352/353/452/453
PWA-F-ADU
2003 2008 Toshiba TEC Corporation All rights reserved
PWA-F-FUS ASD/AUD/CND models Standard, MJD model Option