Ricoh SP 200 Specifications Page 27
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- Table of contents
- TROUBLESHOOTING
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2.4 IPU (IMAGE PROCESSING UNIT)
2.4.1 Overview
The image data from the SBU goes to the IPU (Image Processing Unit) IC on
the BICU board, which carries out the following processes on the image data:
1. Auto shading
2. Filtering (MTF and smoothing)
3. Magnification
4.
γ
correction
5. Grayscale processing
6. Binary picture processing
7. Error diffusion
8. Dithering
9. Video path control
10. Test pattern generation
The image data then goes to either the LD controller (GAVD) or the FCI
depending on the selected copy modes.
SBU
MSU
LD
Unit
IPU
GAVD FCI
+
+
Fax controller
+
CPU
+
BICU
CPU BUS
+
8 bit
Data
1 bit
Data
Printer
controller
R
x
+
Fax Controller
Tx
A193D527.wmf
IMAGE PROCESSING 1 August 1996
2-8
- IMPORTANT SAFETY NOTICES 1
- LASER SAFETY 2
- WARNING FOR LASER UNIT 2
- CAUTION MARKING: 2
- SECTION 1 3
- OVERALL MACHINE 3
- INFORMATION 3
- 1. SPECIFICATIONS 4
- 2. MACHINE CONFIGURATION 7
- 3. PAPER PATH 8
- A193V502.wmf 9
- 6. DRIVE LAYOUT 14
- 7. COPY PROCESS 15
- 1 August 1996 COPY PROCESS 16
- 8. BOARD STRUCTURE 17
- 8.2 DESCRIPTION 18
- DETAILED SECTION 19
- DESCRIPTIONS 19
- SECTION 2 19
- 1. SCANNING 20
- 1.2 SCANNER DRIVE 21
- 1 August 1996 SCANNING 22
- 2. IMAGE PROCESSING 24
- Z/C: Zero Clamp 25
- 2.3 AUTO IMAGE DENSITY (ADS) 26
- A193D527.wmf 27
- 2.4.2 Image Processing Path 28
- A193D517.wmf 29
- A193D503.wmf 30
- A193D504.wmf 31
- A193D507.wmf 33
- A193D518.wmf 33
- A193D528.wmf 35
- A193D511.wmf 36
- 3. LASER EXPOSURE 37
- 3.2 OPTICAL PATH 38
- A193D519.wmf 39
- A193d520.wmf 39
- 3.4 AUTO POWER CONTROL (APC) 40
- 3.5 LD SAFETY SWITCHES 41
- 4. PCU (PHOTOCONDUCTOR UNIT) 42
- 4.2 DRIVE MECHANISM 43
- A193D535.wmf 44
- A193D536.mwf 44
- 4.4 DRUM CHARGE 45
- A193D014.wmf 46
- A193D543.wmf 46
- A193D015.wmf 47
- A193D544.wmf 47
- A193D012-3.wmf 48
- 4.5 DEVELOPMENT 49
- A193D017.wmf 50
- A193D016.wmf 51
- A193D534.wmf 52
- 4.5.5 Toner Density Control 53
- A193D522.wmf 54
- A193D516.wmf 57
- A193D019.wmf 57
- A193D020.wmf 58
- A193D541.wmf 59
- A193d010.wmf 61
- A193D529.wmf 61
- 5. PAPER FEED 63
- 5.2 PAPER TRAY 64
- PAPER FEED 1 August 1996 65
- 1 August 1996 PAPER FEED 66
- A193D025.wmf 68
- 5.3 BY-PASS FEED 69
- 5.4 PAPER REGISTRATION 72
- 6. IMAGE TRANSFER AND PAPER 73
- SEPARATION 73
- MECHANISM 74
- 6.3 ROLLER CLEANING 75
- A193D021-2 76
- A193D538.wmf 76
- 7. IMAGE FUSING 77
- 1 August 1996 IMAGE FUSING 78
- IMAGE FUSING 1 August 1996 79
- 7.4 PRESSURE ROLLER 80
- 7.5 CLEANING MECHANISM 80
- 7.7 OVERHEAT PROTECTION 81
- 8. ENERGY SAVER MODES 82
- Auto Energy Saver Mode 83
- Auto Shut Off Mode 83
- Stand-by Mode 85
- Entering auto shut off mode 86
- Power Consumption 86
- 8.5 ENERGY SAVER CONTROL 90
- - Block Diagram 91
- - Copier Configuration 92
- - All configurations 93
- 9. PAPER EXIT 94
- SECTION 3 95
- INSTALLATION 95
- 1. INSTALLATION REQUIREMENTS 96
- 1.4 POWER REQUIREMENTS 97
- 2. COPIER INSTALLATION 98
- A193I500.wmf 99
- A193I501.wmf 99
- A193I514.wmf 100
- A193I515.wmf 100
- A193I502.wmf 101
- A193I503.wmf 101
- A193I504.wmf 102
- A628I500.wmf 103
- A628I501.wmf 103
- A628I502.wmf 103
- A628I503.wmf 104
- A628I505.wmf 104
- G697I501.wmf 105
- G697I500.wmf 105
- G697I504.wmf 106
- G697I503.wmf 106
- G697I502.wmf 106
- G697I506.wmf 107
- 2.5 DUPLEX UNIT INSTALLATION 108
- G694I503.wmf 109
- G694I504.wmf 109
- G694I505.wmf 109
- G694I506.wmf 110
- G694I507.wmf 110
- 2.6 1-BIN SORTER INSTALLATION 111
- A629I502.wmf 112
- A629I503.wmf 112
- 2.7 MEMORY BOARD 113
- A193I044.wmf 114
- A193I043.wmf 114
- A193I045.wmf 115
- A193I506.wmf 115
- A193I510.wmf 116
- A193I511.wmf 116
- 2.10 TRAY HEATER 117
- A193I508.wmf 118
- A193I509.wmf 119
- SECTION 4 120
- SERVICE TABLES 120
- 1. SERVICE REMARKS 121
- 1.3 TRANSFER ROLLER UNIT 122
- 1.4 SCANNER UNIT 122
- 1.5 LASER UNIT 122
- 1.6 FUSING UNIT 122
- 1.7 PAPER FEED 123
- 1.8 OTHERS 123
- A193M505.wmf 124
- A193M506.wmf 125
- Item 3 is not used 130
- (Z/C) for the 137
- A193M502.wmf 151
- A193M504.wmf 151
- A193M503.wmf 151
- A193M500.wmf 151
- A193M507.wmf 153
- SW No. 1 432 155
- A193M508.wmf 156
- - Output check table 157
- A193M509.wmf 158
- Jam Code Meaning 159
- A193M513.wmf 161
- 3. USER PROGRAM MODE 162
- UP Mode Table (Copy Settings) 163
- 4. SWITCHES/LEDS 164
- SECTION 5 165
- PREVENTIVE MAINTENANCE 165
- 1.1 PM TABLE 166
- SECTION 6 168
- REPLACEMENT 168
- AND ADJUSTMENT 168
- 1. EXTERIOR 169
- 1.2 REAR COVER 170
- 1.3 LEFT/RIGHT COVER 170
- 1 August 1996 EXTERIOR 171
- 2. PHOTOCONDUCTOR UNIT (PCU) 172
- A193R509.wmf 173
- A193R508.wmf 173
- 2.2 DRUM CHARGE ROLLER UNIT 174
- 2.3 DRUM 175
- 2.4 CLEANING BLADE 176
- 3. TRANSFER UNIT 177
- 4. SCANNER UNIT 178
- 4.2 SCANNER FRAME 179
- 4.3 ORIGINAL SIZE SENSOR 180
- 4.4 LENS BLOCK/SBU ASSEMBLY 180
- 4.5 XENON LAMP 181
- SCANNER UNIT 1 August 1996 182
- 4.7 SCANNER MOTOR 183
- 4.8 SCANNER WIRE 184
- 1 August 1996 SCANNER UNIT 185
- >PS< 186
- 1 August 1996 LASER UNIT 187
- 5.2 POLYGON MIRROR MOTOR 188
- 5.3 LD UNIT 189
- Paper direction 190
- LASER UNIT 1 August 1996 190
- 6. FUSING/EXIT 191
- 6.3 HOT ROLLER/FUSING LAMP 192
- 1 August 1996 FUSING/EXIT 193
- 7.1 EXIT UNIT 194
- 1 August 1996 EXIT 195
- 8. PAPER FEED/ REGISTRATION 196
- A193R028.wmf 197
- A193R029.wmf 198
- A193R030.wmf 198
- A193R031.wmf 199
- 8.6 PAPER END SENSORS 200
- A193R521.wmf 201
- A193R527.wmf 201
- A193R034.wmf 202
- 9. OTHERS 203
- 9.2 MSU BOARD/BICU BOARD 204
- 9.3 PSU BOARD 205
- 11.1 PRINTING 207
- A193R513.wmf 208
- A193R524.wmf 208
- 11.2 SCANNING 209
- A193R517.wmf 210
- 11.3 ADF IMAGE ADJUSTMENT 211
- OPERATOR 212
- SECTION 7 213
- TROUBLESHOOTING 213
- 1. SERVICE CALL CONDITIONS 214
- 2. SC CODE DESCRIPTIONS 215
- 3.1 SENSORS 224
- 4. BLOWN FUSE CONDITIONS 226
- SECTION 8 227
- ELECTRICAL COMPONENT LAYOUT 228
- A193S501.wmf 229
- A193S500.wmf 230
- A193PointtoPointDiagram 233
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