Toshiba 3511, 4511 manual Control Panel, Control circuit for the exposure lamp

5. CONTROL PANEL			5-1
5.1	Control Panel and Display Panel		5-1
5.2	Items Shown on the Display Panel		5-2
	5.2.1	Display	5-3
5.3	Relation between the Equipment State and Operator’s Operation		5-8
5.4	Description of Operation		5-9
	5.4.1 Dot matrix LCD circuit		5-9
	5.4.2	LED display circuit	5-11
5.5	Disassembly and Replacement		5-12

6. SCANNER			6-1
6.1	Function		6-1
6.2	Construction		6-2
6.3	Description of Operation		6-4
	6.3.1	Scan motor	6-4
	6.3.2	Scanning drive circuit	6-5
	6.3.3	Initialization at power-ON	6-7
6.4	Control of Exposure Lamp		6-8
	6.4.1	General description	6-8
	6.4.2	Exposure lamp	6-9
	6.4.3 Control circuit for the exposure lamp		6-10
6.5	General Description of CCD Control		6-11
	6.5.1	Opto-electronic conversion	6-11
	6.5.2	Shading correction	6-11
6.6	Automatic Original Size Detection Circuit		6-12
	6.6.1 Principle of original size detection		6-12
	6.6.2 Process of detection of original size		6-12
6.7	Disassembly and Replacement		6-16

7. IMAGE PROCESSING		7-1
7.1	General Description	7-1
7.2	Configuration	7-3
7.3	SYS Board (PWA-F-SYS-350)	7-4
	7.3.1 Features	7-4
	7.3.2 Functions of image processing circuit	7-5
7.4	LGC Board (PWA-F-LGC-350)	7-10
	7.4.1 Features	7-10
	7.4.2 Functions of image processing circuit	7-10
7.5	Laser Driving PC Board (LDR Board)	7-10

e-STUDIO3511/4511 CONTENTS ii November 2003 © TOSHIBA TEC