Canon LBP3300 Series Service Manual page 18

Contents
2.5.3 Cassette Pickup .......................................................................................................................................................................... 2-15
2.5.3.1 Cassette pick-up ............................................................................................................................................................................................ 2-15
2.5.4 Multi-purpose Pickup................................................................................................................................................................. 2-15
2.5.4.1 Manual feed .................................................................................................................................................................................................. 2-15
2.5.5 Duplex Feeding.......................................................................................................................................................................... 2-16
2.5.5.1 Outline .......................................................................................................................................................................................................... 2-16
2.5.5.2 Operation ...................................................................................................................................................................................................... 2-17
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 ............................................................................................................................................................................. 2-18
2.6.2.1 Power Supply ................................................................................................................................................................................................ 2-18
2.6.2.1.1 Low-voltage Power Supply Circuit ...................................................................................................................................................... 2-18
2.6.2.2 Protective Functions ..................................................................................................................................................................................... 2-19
2.6.2.2.1 Protective function ................................................................................................................................................................................ 2-19
2.7 ENGINE CONTROL SYSTEM ................................................................................................................................. 2-20
2.7.1 Video Controller ........................................................................................................................................................................ 2-20
2.7.1.1 Outline .......................................................................................................................................................................................................... 2-20
2.7.1.2 Outline of Operation by Block...................................................................................................................................................................... 2-20
2.7.2 Engine Controller....................................................................................................................................................................... 2-20
2.7.2.1 Outline .......................................................................................................................................................................................................... 2-20
2.8 FIXING UNIT/DELIVERY SYSTEM ....................................................................................................................... 2-22
2.8.1 Overview/Configuration ............................................................................................................................................................ 2-22
2.8.1.1 Outline .......................................................................................................................................................................................................... 2-22
2.8.2 Various Control Mechanisms .................................................................................................................................................... 2-23
2.8.2.1 Fixing Temperature Control ......................................................................................................................................................................... 2-23
2.8.2.1.1 Fixing temperature control.................................................................................................................................................................... 2-23
2.8.2.2 Protective Functions ..................................................................................................................................................................................... 2-24
2.8.2.2.1 Protective function ................................................................................................................................................................................ 2-24
2.8.2.2.2 failure detection .................................................................................................................................................................................... 2-24