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e-studio 250
Page 32 (When the PFU, PFP, CM, ADU, SFB and JSP Are Mounted)
Toshiba e-studio 250 - When the PFU, PFP, CM, ADU, SFB and JSP Are Mounted; When the PFU, LCF, ADU, SFB and Finisher Are Mounted
255 pages
Manual
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December 2002 TOSHIBA TEC
2 -
19
e-STUDIO160/200/250 OUTLINE OF
THE MACHINE
2.4.
3
When the PFU, PFP
, CM, ADU, SFB and JSP are mounted
2.4.
4
When the PFU, LCF
, ADU, SFB and Finisher are mounted
02-04-04
02-04-05
Duplex print
Duplex print
31
33
Table of Contents
Main Page
Table of Contents
13
Service Manual
1
Options • Supplies
6
Accessories
10
Options
11
System List
12
Table of Contents
13
Outline of the Machine
14
Sectional View
14
Location of Electrical Parts
18
Symbols and Functions of Various Devices
26
Copy Paper Path
31
Normal
31
When the PFU, PFP, ADU, SFB and OCT Are Mounted
31
When the PFU, PFP, CM, ADU, SFB and JSP Are Mounted
32
When the PFU, LCF, ADU, SFB and Finisher Are Mounted
32
System Block Diagrams
33
Removal and Reinstallation of Covers and PC Boards
34
Removal and Reinstallation of Covers
34
Removal of PC Boards
42
Copying Process
48
Details of Copying Process
50
List of Copying Process Conditions
57
Table of Contents
67
Copier Operation
68
Description of Operation
68
Warming up
68
Standby
69
Automatic Feed Copying Using the START Key
70
Bypass-Feed Copying
71
Interrupt Copying
71
Operation Outline
68
Fault Detection
72
Classification of Faults
72
Explanation of Faults
73
Flow Charts
76
At Power on Time
76
Copying at Platen (Simplex → Simplex)
78
Copying Using Cassette 1
79
Table of Contents
80
Detailed Drawing of the Control Panel and the Display Panel
81
Display Unit
81
Items Shown on the Display Panel
82
Display During Normal Copying
82
Display in the Event of Faulty Conditions
84
Relation between Copier Conditions and Operator's Actions
92
Description of Operation
93
Dot Matrix LCD Circuit
93
LED Display Circuit
97
Table of Contents
99
Image Processing
100
Introduction
100
Image Processing Circuit
101
SLG Board
102
Features
102
Functions of the Image Processing Circuit
102
Table of Contents
108
Scanner
109
Functions
109
Configuration
110
Scanner Motor Operation
113
Scanner Motor Drive Circuit
114
Exposure Lamp Control
117
Exposure Lamp
117
Exposure Lamp Control Circuit
118
General Description of CCD Control
120
Photo-Voltaic Conversion
120
Shading Compensation
121
Automatic Original-Size Detection Circuit (E-STUDIO200/250 Series)
122
Principle of Original-Size Detection
122
Original Size Detection
122
Damp Heater Control Circuit (ASD/AUD/CND/SAD Models)
125
Disassembly and Replacement
126
ADF Glas.
128
Original Glass
129
Carriage 1
133
Carriage 2
134
CCD Unit
137
Table of Contents
140
General Description
141
Printing
141
Structure
142
Laser Diode
145
Disassembly and Replacement
146
Table of Contents
147
Construction
148
General Description
148
Paper Feeding System
148
Drive Description
149
Pickup Feed Roller, Feed Roller and Registration Roller
149
Tray Lift Shaft
151
Description of Operation
151
Tray Section
151
Paper Feeding Section
151
Paper Separation
152
Cassette Feeding Operation
153
Function of each Part
154
Tray-Up Motor Drive Circuit
156
Disassembly and Replacement
157
Drive System
159
Construction of Drive System
160
Description of Operations
161
Part a
161
Part B
162
Part C
163
Disassembly and Replacement
165
Main Motor
170
Main Motor Drive
170
Control Signals
171
Table of Contents
172
Construction
173
Drum-Related Section
173
General Description
173
Drive Description
174
Function of each Part
175
High Voltage Output Control Circuit
176
Outline
176
Control Method
176
Disassembly and Replacement
179
Developer Section
181
Construction
182
General Description
182
Drive Description
183
Function of each Part
186
Toner Control Circuit
187
Outline
187
Toner Empty Detection Circuit
187
Toner Supply Motor
188
Disassembly and Replacement
189
Table of Contents
194
Construction
195
Heater Thermistor
195
Fuser Unit/Exit Unit
195
General Description
195
Drive Description
196
Description of Operations
197
Fuser Unit
197
Exit Unit
197
Functions of each Part
198
Fuser Unit
198
Heater Thermistor
198
Paper Exit Unit
199
Heater Control Circuit
200
Temperature Detection Section
200
Temperature Detection by the Thermistor
203
Disassembly and Replacement
204
Table of Contents
216
Outline
217
Power Supply Unit
217
DC Output Circuit
218
Power Supply Sequence
219
Dump Heater Power Supply Circuit (ASD/AUD/CND/SAD Models)
220
Heater Lamp Drive Circuit
220
Stapler Power Supply Circuit
220
Table of Contents
221
Board Assembly
222
Pwa-F-Man
222
Pwa-F-Rly
223
Pwa-F-Pif
224
Pwa-F-Pnl
225
Pwa-F-Vr
225
Pwa-F-Slg
226
PWA-F-FUS (ASD/AUD/CND/SAD Models)
227
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