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MFC-7380
Brother MFC-7380 User Manual
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May 2014
SM-F
AX160
8C5H*
(3)
Brother Laser MFC
SERVICE MANUAL
MODEL:
DCP
-
7080/7080D/7180DN
DCP
-
L2500D/L2520D/L2520DW
DCP
-
L2540DN/L2540DW/L2541DW/L2560DW
HL
-
L2380DW
MFC-7380/7480D/7880DN
MFC-L2680W/L2700D/L2700DN/L2700DW
MFC-L2701D/L2701DW/L2703DW/L2705DW
MFC-L2720DW/L2740DW
2
Table of Contents
Default Chapter
1
Service Manual
1
Open Source Licensing Remarks
3
Other Information
3
Table of Contents
4
Regulation
10
Safety Information
17
Additional Information
22
Chapter 1 Supplemental Specifications
25
General
25
Network Connectivity
29
Service Information
30
Supplies
31
Media Specifications
33
Fax (Only for the Models with Fax Function)
33
Copy
34
Scanner
35
Chapter 2 Error Indications & Troubleshooting
36
Introduction
36
Precautions
36
Checks before Commencing Troubleshooting
37
Overview
39
Cross-Section Drawing
39
Printer Part
39
Scanner Part
40
Paper Feeding
41
Printer Part
41
Scanner Part
42
Operation of each Part
43
Block Diagram
44
Main Components
45
Error Indications
46
Error Codes
47
Error Messages
54
2-Line Display LCD Models
54
Touch Panel Models
58
Communication Errors
62
Troubleshooting
66
Error Cause and Remedy
66
Troubleshooting for Paper Feeding Problems
93
No Paper Is Fed from Paper Tray
93
No Paper Is Fed from Manual Feed Slot
94
Multiple Sheets of Paper Are Fed
94
Paper Becomes Wrinkled
95
Paper Is Fed at an Angle
95
Paper Is Curled
96
Duplex Printing Is Not Possible
96
Paper Jam
97
Troubleshooting for Image Defects
101
Image Defect Examples
101
Troubleshooting According to Image Defect
102
Poor Fixing
103
Image Distortion
104
Faint Print
108
White Spots
109
Horizontal Lines
111
Troubleshooting for Software Problems
113
Cannot Receive Data
113
Troubleshooting for Network Problems
114
Cannot Print Via Network Connection
114
Cannot Connect to Access Point
114
Troubleshooting for Control Panel Problems
115
Nothing Is Displayed on the LCD
115
Nothing Is Displayed on the LED
115
Control Panel Is Inoperable
116
Troubleshooting for Toner and Drum Problems
117
New Toner Is Not Detected
117
Toner Cartridge Cannot be Recognized
117
Error Message Prompting Toner Cartridge Replacement Does Not Disappear
117
Drum Error
118
Error Message Prompting Drum Replacement Does Not Disappear
118
Troubleshooting for Fuser Unit Problems
119
Fuser Unit Failure
119
Troubleshooting for Laser Unit Problems
119
Laser Unit Failure
119
Troubleshooting for PCB Problems
120
Main PCB Failure
120
Memory Full
120
Print Limit / ID Authentification Error
120
Troubleshooting for Document Feeding Problems
121
No Document Is Fed
121
Multiple Documents Are Fed
121
Document Jam
122
Document Becomes Wrinkled
123
Document Size Is Not Detected Correctly
123
Troubleshooting for Image Defects
124
Defect Examples
124
Troubleshooting According to Image Defect
124
Faulty Registration
125
Troubleshooting for Fax Problems
129
Fax Cannot be Sent
129
Fax Cannot be Received
130
Telephone Communication Is Unavailable
130
Communication Error Occurs
131
Troubleshooting for Other Problems
132
Cannot Print
132
Cannot Update Firmware
132
Machine Is Not Turned on
133
Chapter 3 Disassembly/Reassembly
134
Safety Precautions
134
Packing
135
Screw Catalogue
136
Screw Torque List
137
Lubrication
139
Overview of Gears
140
Harness Routing
142
Disassembly Flow Chart
155
Disassembly Procedure
156
Preparation
156
Cord Hook
158
Back Cover
159
Outer Chute ASSY
160
Front Cover ASSY, Support Flap
161
Side Cover R
162
Fuser Cover
163
Inner Chute ASSY
164
Side Cover L, Handset Holder ASSY (for Models with Handset)
165
Pull Arm L, Pull Arm R, Pull Arm Spring
167
Document Scanner Unit
168
ADF Unit (for Models with ADF)
170
ADF Unit
170
Hinge ASSY L, Hinge R, Hinge R Support, Hinge Arm R
172
ADF Document Output Support Flap, ADF Document Support
173
ADF Cover ASSY, Gear Cover
174
Document Separate Roller ASSY
175
ADF Separation Pad Holder ASSY
176
CIS Spacer, Second Side CIS Unit (Duplex Scanning Models Only)
177
Document Feed Roller ASSY 1
179
FFC Holder ASSY, Second Side CIS Flat Cable, ADF Motor
183
10First Side Document Scanning Position Sensor PCB ASSY, Second Side Document Scanning Position Sensor PCB ASSY (Duplex Scanning Models Only), ADF Cover/Document Detection Sensor PCB ASSY
188
Document Cover ASSY (for Models Without ADF)
189
Panel Unit (for Models with Touch Panel)
191
Panel Unit
191
Panel PCB ASSY, LCD
192
Touch Panel ASSY
193
Panel Unit (for Models Without Touch Panel)
194
Panel Unit
194
Panel PCB ASSY
195
Lcd
196
First Side CIS Unit, First Side CIS Flat Cable
197
Lock Claw, Pull Arm Guide
203
Modem PCB ASSY
204
Speaker Unit
206
Joint Cover ASSY
207
Fuser Unit
208
Low-Voltage Power Supply PCB ASSY
210
Fan
212
High-Voltage Power Supply PCB ASSY
213
Filter
215
Laser Unit
216
Wireless LAN PCB (Wireless Network Models Only)
218
Roller Holder ASSY
219
Main PCB ASSY
220
T1 Clutch and Registration Clutch
221
New Toner Sensor PCB ASSY
222
Main Frame L ASSY
223
Main Motor
225
Fuser Gear 67R/40R
227
Eject Sensor PCB ASSY
228
Registration Front/Rear Actuator Holder ASSY
230
Chapter 4 Adjusting and Updating Settings as Required after Parts Replacement
233
If You Replace the Main Pcb Assy
233
Setting by Spec (Function Code: 74)
234
(Sub Firmware, Demo Firmware, Panel Firmware, and Main Firmware)
234
Checking Firmware Version
234
Installing Firmware
234
Initializing the EEPROM of the Main PCB ASSY (Function Code: 01)
235
Setting Serial Number and Entering Adjusted Value of Laser Unit
236
Acquiring White Level Data (Function Code: 55)
237
Adjusting Touch Panel (Function Code: 61) (Touch Panel Models Only)
237
If You Replace the Low-Voltage Power Supply Pcb Assy
238
Reset Irregular Power Supply Detection Counter of the Low-Voltage Power Supply PCB (Function Code: 88)
238
If You Replace the Laser Unit
239
Entering Adjusted Value of Laser Unit
240
If You Replace the Panel Unit or Panel Pcb Unit
241
Installing Firmware (Touch Panel Models Only)
242
Checking Firmware Version
242
Installing Firmware
242
Adjusting Touch Panel (Function Code: 61) (Touch Panel Models Only)
242
Checking LCD Operation (Function Code: 12)
242
If You Replace the First Side Cis Unit or Document Scanner Unit
243
Acquiring White Level Data (Function Code: 55)
243
Scanning and Printing Check
243
If You Replace the Adf Unit or Second Side Cis Unit
244
Acquiring White Level Data (Function Code: 55) (Duplex Scanning Models Only)
244
Scanning and Printing Check
244
Chapter 5 Service Functions
245
Function Code
245
How to Enter Maintenance Mode
245
Method of Entering Maintenance Mode for Service Personnel
245
Method of Entering End-User Accessible Maintenance Mode
246
List of Maintenance Mode Functions
247
Details of Maintenance Mode Functions
248
Initialize EEPROM Parameters (Function Code: 01, 91)
248
Print White Level / Black Level Data for Document Scanning Compensation (Function Code: 05)
249
ADF Performance Test (Function Code: 08)
251
Monochrome Print Quality Test Pattern (Function Code: 09)
252
Set Worker Switches (WSW) and Print Worker Switch Setting Data (Function Code: 10, 11)
253
Check LCD Operation (Function Code: 12)
256
Check Control Panel Operation (Function Code: 13)
258
Display Software Version (Function Code: 25)
259
Change Onepushdemo Function Setting (Function Code: 28)
260
Check Sensor Operation (Function Code: 32)
261
Display LAN Connection Status (Function Code: 33)
263
Set PC Print Functions (Function Code: 43)
264
Change USB No. Return Value / Adjust Left-End Print Start Position on Second Side When Duplex Printing (Function Code: 45)
267
Set Country / Language (Function Code: 52)
269
Transfer Received Fax Data / Log Information (Function Code: 53) (Fax Models Only)
270
Fine-Tune Scanning Position (Function Code: 54)
272
Acquire White Level Data and Set CIS Scan Area (Function Code: 55)
273
Adjust Touch Panel (Function Code: 61)
274
Continuous Print Test (Function Code: 67)
275
Print Frame Pattern (Single-Side Printing) (Function Code: 69)
278
Print Frame Pattern (Duplex Printing) (Function Code: 70)
279
Print Test Pattern (Function Code: 71)
280
Setting by Spec (Function Code: 74)
283
Print Maintenance Information (Function Code: 77)
289
Check Fan Operation (Function Code: 78)
291
Display Machine Log Information (Function Code: 80)
292
Display Machine Error Code (Function Code: 82)
295
Send Communication Log Information to Telephone Line (Function Code: 87)
295
Reset Irregular Power Supply Detection Counter of Low-Voltage Power Supply PCB (Function Code: 88)
296
Quit Maintenance Mode (Function Code: 99)
296
Other Service Functions
297
Print Communication Error List
297
Chapter 6 Wiring Diagram
298
Chapter 7 Periodical Maintenance
299
Periodical Replacement Parts
299
Appendix 1 Serial Numbering System
300
Appendix 2 Deleting User Setting Information
301
Appendix 3 Installing the Maintenance Printer Driver
302
Other manuals for Brother MFC-7380
Product Safety Guide
20 pages
Quick Setup Guide
2 pages
4
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Brother MFC-7380 Specifications
General
Brand
Brother
Model
MFC-7380
Category
All in One Printer
Language
English
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