Canon LBP 3370 Service Manual Download Page 28

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Contents

2.5.3 Cassette Pickup .......................................................................................................................................................................... 2-15

2.5.3.1 Cassette pick-up ............................................................................................................................................................................................ 2-15

2.5.4 Multi-purpose Pickup................................................................................................................................................................. 2-16

2.5.4.1 Manual Fees pick-ip...................................................................................................................................................................................... 2-16

2.5.5 Duplex Feeding .......................................................................................................................................................................... 2-16

2.5.5.1 Outline .......................................................................................................................................................................................................... 2-16

2.5.5.2 Operation ...................................................................................................................................................................................................... 2-16

2.6 EXTERNAL AND CONTROLS SYSTEM ............................................................................................................... 2-17

2.6.1 Fan.............................................................................................................................................................................................. 2-17

2.6.1.1 Fan motor control.......................................................................................................................................................................................... 2-17

2.6.2 Power Supply ............................................................................................................................................................................. 2-17

2.6.2.1 Power Supply ................................................................................................................................................................................................ 2-17

2.6.2.1.1 Low-voltage Power Supply Circuit ...................................................................................................................................................... 2-17

2.6.2.2 Protective Functions ..................................................................................................................................................................................... 2-18

2.6.2.2.1 Protective function ................................................................................................................................................................................ 2-18

2.7 ENGINE CONTROL SYSTEM ................................................................................................................................. 2-19

2.7.1 Video Controller ........................................................................................................................................................................ 2-19

2.7.1.1 Outline .......................................................................................................................................................................................................... 2-19

2.7.1.2 Outline of Operation by Block...................................................................................................................................................................... 2-19

2.7.1.3 Overview....................................................................................................................................................................................................... 2-20

2.7.1.4 Outline of Operation by Block...................................................................................................................................................................... 2-20

2.7.2 Engine Controller....................................................................................................................................................................... 2-21

2.7.2.1 Outline .......................................................................................................................................................................................................... 2-21

2.8 FIXING UNIT/DELIVERY SYSTEM ....................................................................................................................... 2-23

2.8.1 Overview/Configuration ............................................................................................................................................................ 2-23

2.8.1.1 Outline .......................................................................................................................................................................................................... 2-23

2.8.2 Various Control Mechanisms .................................................................................................................................................... 2-24

2.8.2.1 Fixing Temperature Control ......................................................................................................................................................................... 2-24

2.8.2.1.1 Fixing temperature control.................................................................................................................................................................... 2-24

2.8.2.2 Protective Functions ..................................................................................................................................................................................... 2-25

2.8.2.2.1 Protective function ................................................................................................................................................................................ 2-25

2.8.2.2.2 failure detection .................................................................................................................................................................................... 2-25