Brother 1240, HL-1030, 1250 service manual Periodic Maintenance, Troubleshooting

				TABLE OF CONTENTS
CHAPTER 5			PERIODIC MAINTENANCE	5-1
1.	CONSUMABLE PARTS			5-1
	1.1	Drum Unit		5-1
	1.2	Toner Cartridge		5-2
2.	PERIODICAL REPLACEMENT PARTS			...5-4
3.	PERIODICAL CLEANING			5-5
	3.1	Cleaning the Printer Exterior		5-5
	3.2	Cleaning the Drum Unit		5-5
	3.3	Cleaning the Scanner Window		5-6
	3.4	Cleaning the Electrical Terminals		5-6
4.	MTBF / MTTR			..........5-7
CHAPTER 6			TROUBLESHOOTING	6-1
1.	INTRODUCTION			.....6-1
	1.1	Initial Check		6-1
	1.2	Warnings for Maintenance Work		6-2
	1.3	Identify the Problem		6-3
2.	OPERATOR CALLS & SERVICE CALLS			6-4
	2.1	Operator Calls		6-4
	2.2	Service Calls		6-4
3.	ERROR MESSAGES			6-6
	3.1	Error Messages in the Status Monitor		6-6
	3.2	Error Message Printouts		6-8
4.	PAPER PROBLEMS			6-9
	4.1	Paper Load Problems		6-9
	4.2	Paper Jams		6-10
		4.2.1 Clearing the jammed paper		6-10
		4.2.2 Causes & countermeasures		6-11
	4.3	Paper Feeding Problems		6-12
5.	SOFTWARE SETTING PROBLEMS			.....6-14
6.	MALFUNCTIONS			...6-18
7.	IMAGE DEFECTS			..6-23
	7.1	Image Defect Examples		6-23
	7.2	Troubleshooting Image Defect		6-24
	7.3	Location of Grounding Contacts		6-41
		7.3.1 Drum unit		6-41
		7.3.2 Printer body & paper cassette		6-41
8.	INCORRECT PRINTOUT			6-42
9.	NETWORK PROBLEM (FOR HL-1270N ONLY)			6-45
	9.1	Installation Problem		6-45
	9.2	Intermittent Problem		6-46
	9.3	TCP/IP Troubleshooting		6-47
	9.4	UNIX Troubleshooting		6-47

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