Brother MFC-7320 Service Manual

1-6
Confidential
2. ERROR CAUSE
This machine includes a self-diagnosis function. If the machine does not work normally it
judges that an error has occurred (For example: Print Unable 6A), and indicates the
corresponding error message on the LCD, which in turn helps the end user to quickly identify
the problem.
The error code is possible to display by the Maintenance mode 82 (Refer to "1.4.19 Error
Code Indication (Function code 82)" in Chapter 5).
2.1 Error indication
The error codes shaded in the table below are recoverable errors if you follow the User Check items.
Error
codes
Problem
Refer
to:
Error
codes
Problem
Refer
to:
50
Replacement time of the drum
unit
1-7 7B Main PCB failure 1-13
56 Fuser cover opened 1-8 7D Dirt on drum unit 1-14
58
Fuser unit failure
(Stand ready in the given time)
1-8 7F Fax paper setting mismatch 1-14
59 Fuser unit failure 1-8 80 Fax paper size is small 1-14
5A
HVPS PCB ASSY failure 1-9 84 Paper jam in rear of the machine 1-16
5B
New toner detecting lever
malfunction
1-9 88 Paper jam inside the machine 1-16
63
Toner cartridge is at the end of life. 1-10 8A Paper jam in Tray 1 (T1) 1-17
67
Toner of the toner cartridge is
low
1-7 8D Paper jam near paper eject tray 1-17
68 Fuser unit failure 1-11 9F Paper empty 1-18
69 Fuser unit failure 1-11 A1 Front cover open 1-18
6A Fuser unit failure 1-11 A2 Document is too long. 1-18
6B Fuser unit failure 1-11 A3
Document rear sensor is not
turned on when feeding the
document.
1-19
6C Fuser unit failure 1-11 A5
Fax scanning error
(First warning only)
1-19
6D Fuser unit failure 1-11 A6
Fax scanning error (The second
warning that the same error with
A5 occurs again)
1-19
6E Fuser unit failure 1-11 AD DMA transfer error 1-19
6F Fuser unit failure 1-11 AF FB unit home position failure 1-20
71 Polygon motor failure 1-12 B0
Harness for scanning is not
connected correctly.
1-20
72
BD beam detecting sensor
malfunction
1-12 B7 Detection error of scanner 1-20
75 Machine cooling down inside 1-7 B9 Scanning light adjustment error. 1-20
76 Fuser unit failure 1-12 BB White level data error 1-21
77 Fuser unit failure 1-12 E6 NVRAM error on main PCB 1-21
78 Fuser unit failure 1-13 EC Fan performance malfunction 1-21
79
No detection of the internal
temperature thermistor
1-13 F8 Battery connection failure 1-21
7A
No detection of main motor lock
signal
1-13 F9
Maintenance mode 74 Non-
decision
1-22

Brother MFC-7320 Specifications

General

Print technology	Laser
Maximum resolution	2400 x 600 DPI
Time to first page (black, normal)	10 s
Print speed (black, normal quality, A4/US Letter)	18 ppm
Copier resize	25 - 400 %
PC free copying	Yes
Maximum copy resolution	600 x 600 DPI
Copy speed (black, normal quality, A4)	11 cpm
Faxing	Mono faxing
Fax memory	400 pages
Fax speed dialing (max numbers)	200
Total input capacity	250 sheets
Total output capacity	100 sheets
Multi-Purpose tray input capacity	1 sheets
Auto document feeder (ADF) input capacity	35 sheets
Sound power level (standby)	32 dB
Sound pressure level (printing)	53 dB
Standard interfaces	USB 2.0
Dimensions (WxDxH)	428 x 396 x 304 mm
All-in-one functions	Copy, Fax, Scan
Color all-in-one functions	scan, n
Compatible operating systems	Windows Vista, XP (32 & 64 bit); Windows 2000, Mac OS X 10.2.4 en recenter Linux printer driver
Power consumption (standby)	75 W
Power consumption (PowerSave)	9 W
Power consumption (average operating)	320 W
Display	LCD
Market positioning	Home & office
Media weight (tray 1)	60 - 105 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Bundled software	ScanSoft Paperport 11 SE+OCR, Newsoft Presto!, PageManager7 (Mac)
Package weight	14.900 g
Grayscale levels	256
Input color depth	24 bit
Sustainability certificates	ENERGY STAR