Brother MFC-8370DN Service Manual

Confidential
CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING
This chapter details error messages and codes that the incorporated self-diagnostic
functions display if any error or malfunction occurs. If any error message appears, refer to
this chapter to find which components should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections
of the machine and related troubleshooting procedures. This will help service personnel
pinpoint and repair defective components.
CONTENTS
1. INTRODUCTION ........................................................................................................... 3-1
1.1 Precautions............................................................................................................ 3-1
1.2 Part names ............................................................................................................3-2
1.3 Initial Check ........................................................................................................... 3-3
2. DISTINGUISH ERROR CAUSE ....................................................................................3-5
2.1 ERROR INDICATION ............................................................................................ 3-5
2.1.1 Error messages appearing on the LCD......................................................3-5
3. ERROR CODES ............................................................................................................ 3-9
3.1 Error Indication ......................................................................................................3-9
3.2 Error Code Cause and Remedy ..........................................................................3-12
4. PAPER FEEDING PROBLEMS .................................................................................. 3-41
4.1 No Feeding ..........................................................................................................3-41
4.2 Double Feeding ...................................................................................................3-41
4.3 Paper Jam ...........................................................................................................3-42
4.4 Dirt on Paper ....................................................................................................... 3-44
4.5 Wrinkles or creases .............................................................................................3-44
4.6 Waves in the paper / folds in the paper at the eject roller 2.................................3-44
4.7 Curl in the paper ..................................................................................................3-45
4.8 Prints only single side of the paper when duplex-printing ................................... 3-45
5.
TROUBLESHOOTING FOR PRINT IMAGE DEFECT FROM PC/USB/FAX RECEPTION ...... 3-46
5.1 Image Defect Examples ......................................................................................3-46
5.2 The pitch which appears in the image caused by failure of a roller. ....................3-47
5.3 Troubleshooting for image Defect........................................................................3-48
6. SOFTWARE SETTING PROBLEMS .......................................................................... 3-63
7. NETWORK PROBLEMS............................................................................................. 3-64
8. TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS ............................... 3-65
9. TROUBLESHOOTING OF THE CONTROL PANEL .................................................. 3-71
10. TROUBLESHOOTING OF FAX FUNCTIONS ............................................................ 3-73

Brother MFC-8370DN Specifications

General

Duplex printing	Yes
Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	28 ppm
Input color depth	48 bit
Optical scanning resolution	600 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	2, 4, 9, 16, 25
Copy speed (black, normal quality, A4)	28 cpm
Faxing	Mono faxing
Fax memory	500 pages
Modem speed	33.6 Kbit/s
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	20 sheets
Display	LCD
Product color	Grey, White
Market positioning	Home & office
Display number of lines	2 lines
Display number of characters	16
Card reader integrated	-
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper, Transparencies
Non-ISO print media sizes	Executive
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	1
Dimensions (WxDxH)	531 x 451 x 475 mm
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	Scan
Power consumption (standby)	85 W
Power consumption (average operating)	680 W
Package weight	21100 g
Digital sender	No
Maximum duty cycle	- pages per month

Weight and Dimensions

Depth	443 mm
Width	390 mm
Height	442 mm