Sony C9000 service manual Contents

			CONTENTS
1.	SPECIFICATIONS			7
	1.1	Basic System Configuration		7
	1.2	Printer Engine Specifications		8
	1.3	Option Configuration		9
	1.4	Specifications		10
2.	OPERATION DESCRIPTION			12
	2.1	Main Control Board (CRM-PWB)		13
	2.2	Engine Control Board (K73 PWB)		15
	2.3	Power Units		16
	2.4	Mechanical Processes		17
		2.4.1	Electrophotographic process	18
		2.4.2	Paper running process	22
	2.5	Sensor	............................................................................................................................	31
		2.5.1	Paper related sensors	31
		2.5.2	Other sensors	32
	2.6	Color Misalignment Correction		33

2.7Transfer Control Responds to Environmental Changes

	(Room Temperatures and Relative Humidities)	33
2.8	Paper Jam Detection	34
2.9	Cover Opening	35
2.10	Toner Low Detection	36
2.11	Paper Size Detection	37
2.12	Operation at Power-on	38
	2.12.1 Self-diagnostic test	38
2.13	Color Misalignment Detection	39
2.14	Version Read of Periodically Replaced Units	40
2.15	Life Counter for Replaceable Units	40
2.16	Toner Consumption Detection	40

3. PARTS REPLACEMENT			41
3.1	Precautions in Replacing Parts		41
3.2	Parts Layout		43
3.3	Replacing Parts		50
	3.3.1	Top cover	51
	3.3.2 LED Assy/ LED Assy spring		52
	3.3.3	Top cover unit	53

3.3.4Control panel Assy/ Control panel bezel/ LED control PWB/ Toner sensor/

	Stack full sensor/ Control panel tape harness/ Eject roller	54
3.3.5	Top cover handle/ Tope cover latch/ Top cover latch spring	55
3.3.6	Eject guide Assy	56
3.3.7	Cassette Assy/ Blind cover/ Side cover R Assy	57
3.3.8	Feed rollers	58
3.3.9	Left side cover	59
3.3.10	Face-up tray	60
3.3.11	Front cover	61
3.3.12	Rear cover	62
3.3.13	Multipurpose tray Assy/ Multipurpose tray cover Assy/ Links/
	Multipurpose tray top cover/ Multipurpose tray drive gear	63
3.3.14	Drum contact Assys	64
3.3.15	Registration roller Assy (A)/ Registration drive gear (A)	65

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