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9870 - MFC B/W Laser
Brother 9870 - MFC B/W Laser Manuals
Manuals and User Guides for Brother 9870 - MFC B/W Laser. We have
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Brother 9870 - MFC B/W Laser manual available for free PDF download: Service Manual
Brother 9870 - MFC B/W Laser Service Manual (286 pages)
MULTI-FUNCTION CENTER
Brand:
Brother
| Category:
All in One Printer
| Size: 6.9 MB
Table of Contents
Chapter III. Theory of Operation
31
Service Manual
1
Safety Information
4
General Description
6
Machine Outline
7
Specifications
8
Installing the Update Data to the Machine
28
Table of Contents
31
Theory of Operation
31
1 Overview
32
2 Mechanisms
33
Scanner Mechanism
34
Laser Printing Mechanism
36
Paper Pick-Up and Registration Mechanism
36
Print Process Mechanism
37
Heat-Fixing Mechanism
39
Paper Ejecting Mechanism
40
Sensors and Actuators
41
3 Control Electronics
43
Chapter IV. Disassembly/Reassembly and Lubrication
45
Disassembly/Reassembly
47
Safety Precautions
47
Preparation
48
How to Access the Object Component
48
Disassembly Order Flow
49
Lower Rear Cover
50
Access Plates R and F
50
Paper Cassette
51
Document Tray ASSY
52
Upper Rear Cover
54
ADF Unit
55
Disassembling the ADF Unit
57
Scanner Unit and Control Panel ASSY
62
Disassembling the Scanner Unit
65
Disassembling the Control Panel ASSY
70
Relay PCB
71
Speaker
72
Scanner Mount
73
Paper Sub Tray and Tray Holder
76
VC Cover, VC Bracket, and VC Connector PCB (for Models Supporting Video Capture
77
Front Cover
78
Front Sub Cover (for Models Not Supporting Video Capture
78
Outer Chute and Paper Pinch Rollers
79
Main Cover
80
Switch Cover (for Models Not Equipped with a Power Switch
81
Laser Unit
82
Heat-Fixing Unit and FU Lamp
83
Fan
87
Drive Gear ASSY and Main Motor ASSY
89
NCU Shield and NCU PCB
91
Bottom Plate, Main PCB, and Bottom Insulation Film
93
Low-Voltage Power Supply PCB and Power Inlet
97
Inner Insulation Film, High-Voltage Power Supply PCB, Engine PCB, and 2Nd Cassette Relay PCB
99
Toner Sensor (Light-Receiver) PCB and Toner Sensor (LED) PCB
101
Gears and Paper Pick-Up Roller
102
Paper Feed Roller ASSY
103
Clutch Levers, Cassette Guide L, and Solenoid
104
Cleaning of High-Voltage Contacts and Grounding Contacts
105
Lubrication
107
1 ] ADF Unit
107
2 ] Scanner Mount
108
3 ] Drive Gear ASSY
109
4 ] Paper Cassette
110
Chapter V. Maintenance Mode
112
1 Entry into the Maintenance Mode
113
2 List of Maintenance-Mode Functions
114
3 Detailed Description of Maintenance-Mode Functions
116
EEPROM Parameter Initialization
116
Printout of Scanning Compensation Data
117
ADF Performance Test
119
Test Pattern 1
120
Firmware Switch Setting and Printout
121
Operational Check of LCD
166
Operational Check of Control Panel PCB
166
Sensor Operational Check
168
CCD Scanner Area Setting
169
EEPROM Customizing
169
Erasure of Received FAX Messages Temporarily Stored in the Flash Memory
170
Machine Error Code Indication
170
Output of Transmission Log to the Telephone Line (Not Applicable to Machines W/O Fax
171
Cancellation of the Memory Security Mode (Applicable to the European Version W/ Fax Only
171
Chapter VI. Error Indication and Troubleshooting
173
Error Indication
174
Machine Errors
174
1 ] Error Messages on the LCD
174
Machine Error XX
175
Communications Errors (Not Applicable to Machines W/O Fax
179
Troubleshooting
189
Introduction
189
Precautions
189
Checking Prior to Troubleshooting
189
Troubleshooting Procedures
191
1 ] Control Panel Related
191
2 ] Telephone Related
191
3 ] Communications Related
192
4 ] Paper/Document Feeding Related
192
5 ] Print-Image Related
193
6 ] PC-Driven or Video Capture-Driven Printing
199
Location of High-Voltage Contacts and Grounding Contacts
200
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