Contents4.7.6 Main Controller PCB (sub LAN-A)........................................................................................................4- 204.7.6.1 Before Removing the Main Controller PCB (sub LANBAR-C) .................................................4- 204.7.6.2 Removing the Main Controller PCB (sub LANBAR-C) ..............................................................4- 204.7.7 Main Controller PCB (sub RB-A)..........................................................................................................4- 214.7.7.1 Before Removing the Main Controller PCB (sub RB-A2) .........................................................4- 214.7.7.2 Removing the Main Controller PCB (sub RB-A2) ......................................................................4- 214.7.8 SRAM PCB ..............................................................................................................................................4- 214.7.8.1 Before Removing the SRAM .........................................................................................................4- 214.7.8.2 Removing the SRAM ......................................................................................................................4- 224.7.8.3 When Replacing the SRAM PCB..................................................................................................4- 224.7.9 Boot ROM PCB .......................................................................................................................................4- 224.7.9.1 Before Removing the Boot ROM PCB .........................................................................................4- 224.7.9.2 Removing the Boot ROM PCB ......................................................................................................4- 224.7.10 Image Memory (SDRAM) ....................................................................................................................4- 224.7.10.1 Before Removing the Image Memory (SDRAM) PCB.............................................................4- 224.7.10.2 Removing the Image Memory (SDRAM) PCB..........................................................................4- 224.7.11 HDD.........................................................................................................................................................4- 234.7.11.1 Before Removing the HDD ..........................................................................................................4- 234.7.11.2 Removing the HDD .......................................................................................................................4- 234.7.11.3 When Replacing the HDD ............................................................................................................4- 234.7.12 Controller Fan ........................................................................................................................................4- 244.7.12.1 Before Removing the Controller Fan..........................................................................................4- 244.7.12.2 Removing the Controller Fan.......................................................................................................4- 24Chapter 5 Original Exposure System5.1 Construction .....................................................................................................................................................5- 15.1.1 Specifications, Control Mechanisms, and Functions ..........................................................................5- 15.1.2 Major Components...................................................................................................................................5- 15.1.3 Construction of the Control System.......................................................................................................5- 25.1.4 Reader Controller PCB............................................................................................................................5- 45.2 Basic Sequence...............................................................................................................................................5- 55.2.1 Basic Sequence of Operations at Power-On .......................................................................................5- 55.2.2 Basic Sequence of Operations in Response to a Press on the Start Key (book mode, 1 original) ..5- 55.2.3 Basic Sequence of Operations in Response to a Press on the Start Key (ADF mode, 1 original) 5-65.3 Various Control Mechanisms.........................................................................................................................5- 75.3.1 Controlling the Scanner Drive System...................................................................................................5- 75.3.1.1 Overview .............................................................................................................................................5- 75.3.1.2 Reader Motor Control .......................................................................................................................5- 75.3.2 Contact Image Sensor (CIS) ...................................................................................................................5- 95.3.2.1 Overview .............................................................................................................................................5- 95.3.2.2 Analog Control Inside the Contact Image Sensor (CIS) ...........................................................5- 105.3.3 Enlargement/Reduction .........................................................................................................................5- 105.3.3.1 Changing the Magnification in Main Scanning Direction...........................................................5- 105.3.3.2 Changing the Magnification in Sub Scanning Direction ............................................................5- 105.3.4 Controlling the Scanning Lamp.............................................................................................................5- 115.3.4.1 Scanning Lamp ................................................................................................................................5- 11
