Ricoh Aficio BP20N, Service Manual

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SM i G144/G145
G144/G145
TABLE OF CONTENTS
INSTALLATION
1. INSTALLATION............................................................................ 1-1
1.1 INSTALLATION PROCEDURE .................................................................1-1
PREVENTIVE MAINTENANCE
2. PREVENTIVE MAINTENANCE.................................................... 2-1
2.1 PM INTERVALS ........................................................................................2-1
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1
3.1 GENERAL PRECAUTIONS.......................................................................3-1
3.1.1 SERVICING THE MACHINE ............................................................3-1
3.1.2 RELEASING PLASTIC LATCHES....................................................3-1
3.2 COVERS ...................................................................................................3-2
3.2.1 FRONT COVER................................................................................3-2
3.2.2 BYPASS COVER..............................................................................3-3
3.2.3 REAR COVER..................................................................................3-4
3.2.4 TOP COVER ....................................................................................3-6
3.2.5 RIGHT SIDE COVER .......................................................................3-7
3.2.6 LEFT SIDE COVER..........................................................................3-8
3.2.7 MIDDLE COVER ..............................................................................3-9
3.3 EXIT ROLLER .........................................................................................3-10
3.4 ENGINE SHIELD ASSEMBLY AND EXIT BOARD .................................3-11
3.4.1 ENGINE SHIELD ............................................................................3-11
3.4.2 EXIT BOARD..................................................................................3-13
3.5 SMPS ......................................................................................................3-14
3.6 FUSING UNIT..........................................................................................3-17
3.6.1 FUSING UNIT ASSEMBLY ............................................................3-17
3.6.2 THERMOSTAT...............................................................................3-18
3.6.3 FUSING LAMP ...............................................................................3-19
3.6.4 STRIPPER PAWLS ........................................................................3-20
Reassembling the Fusing Unit ............................................................3-21
Note. ...................................................................................................3-22
3.6.5 THERMISTOR................................................................................3-23
3.7 UNPLUG FAN .........................................................................................3-24
3.8 LASER SCANNING UNIT .......................................................................3-25
3.9 DRIVE UNIT ............................................................................................3-27
3.10 TRANSFER UNIT..................................................................................3-28