Epson AcuLaser C1900 Service Manual page 20

EPSON AcuLaser C1900/AcuLaser C900
4.4.6 Left Cover ................................................................................................. 179
4.4.7 Front Cover ............................................................................................... 179
4.4.8 Right Door ................................................................................................ 180
4.5 Printer Main Parts Disassembly and Assembly................................................. 183
4.5.1 Main Board (C485MAIN/C494MAIN).................................................... 183
4.5.2 Engine Board (PWB-A)............................................................................ 184
4.5.3 Exhaust Fan Motor (M6) .......................................................................... 185
4.5.4 Power Supply Fan Motor (M4)................................................................. 185
4.5.5 Power Supply Unit (PU) ........................................................................... 186
4.5.6 AIDC Sensor............................................................................................. 187
4.5.7 High Voltage Unit (HV) ........................................................................... 188
4.5.8 Cleaner Pressure Flapper Solenoid (SL4)................................................. 189
4.5.9 Rack Motor (M2) ...................................................................................... 190
4.5.10 Main Motor Ass'y................................................................................... 191
4.5.11 Multi Purpose Tray ................................................................................. 192
4.5.12 Paper Empty Sensor................................................................................ 193
4.5.13 Fuser Unit Removal ................................................................................ 194
4.5.14 Fusing Cooling Fan Motor (M5) ............................................................ 196
4.5.15 Paper Load Roller ................................................................................... 197
4.5.16 Separation Roller .................................................................................... 197
4.5.17 Printer Head Unit (PH) ........................................................................... 198
4.5.18 Manual Paper Feed Solenoid (SL1)........................................................ 200
4.5.19 Fuser Deceleration Drive Assy ............................................................... 201
4.5.20 Rack ........................................................................................................ 202
4.6 Extension Unit Disassembly and Assembly...................................................... 204
4.6.1 The 2nd Paper Load Roller....................................................................... 204
4.6.2 500-sheet Cassette Unit Control Board (PWB-A).................................... 205
4.7 Duplex Unit Disassembly and Assembly .......................................................... 206
4.7.1 Duplex Unit Control Board (PWB-A) ...................................................... 206
4.7.2 Paper Feed Sensor..................................................................................... 206
4.7.3 Reverse Motor / Transfer Motor............................................................... 207
Chapter 5 Adjustment
5.1 Overview ........................................................................................................... 209
5.2 USB ID Input..................................................................................................... 210
5.2.1 Installation Procedure for Program........................................................... 210
5.2.2 Procedure for Program Operation............................................................. 210
5.2.3 USB ID Confirmation............................................................................... 211
5.3 Service Utility (AcuLaser C900)....................................................................... 212
5.3.1 Overview .................................................................................................. 212
5.3.1.1 Operating Environment ..................................................................... 212
5.3.1.2 Conditions for Use ............................................................................ 212
5.3.2 How to Use the Service Utility................................................................. 213
5.3.2.1 Starting the Service Utility ................................................................ 213
5.3.2.2 Functions ........................................................................................... 215
5.3.3 Operation .................................................................................................. 215
5.3.3.1 Engine Status Sheet ........................................................................... 215
5.3.3.2 Reset Counter .................................................................................... 215
5.3.3.3 USB ID .............................................................................................. 216
Chapter 6 Maintenance
6.1 Maintenance ...................................................................................................... 218
6.1.1 Consumables and Regular Replacement Parts ......................................... 218
6.1.2 Cleaning.................................................................................................... 218
Chapter 7 Appendix
7.1 Schematic Wiring Diagram ............................................................................... 220
7.2 Connectors and Jumpers on Circuit Boards ...................................................... 221
7.3 ASP List ............................................................................................................ 249
7.4 Circuit Diagram................................................................................................. 259
Revision B
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