Brother MFC-7320 Service Manual

1-43
Confidential
6. TROUBLESHOOTING OF SCANNIG
6.1 Cannot scan the document in the FB unit.
(If scan the document, it is completely white or black.)
6.2 Cannot scan the document in the ADF unit.
(If scan the document, it is completely white or black.)
User Check
• Check if there is the scanning surface of the FB unit scanning document in the lower
side.
Step Cause Check
Result Remedy
1
Document front
actuator not
operating
smoothly or
catching
Does document front
actuator move
smoothly? No
Re-assemble the
document front actuator.
2
Each harnesses
of FB unit
connection
failure
Is the each harnesses of
FB unit connected
securely?
Ye s
Reconnect the each
harnesses of FB unit.
3
FB unit failure Is the problem solved by
replacing the FB unit?
Ye s
Replace the FB unit.
4
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Ye s
Replace the main PCB
ASSY.
User Check
• Check if there is the scanning surface of the ADF unit document in the upper side.
Step Cause Check
Result Remedy
1
Each harnesses
of FB unit
connection
failure
Is the each harnesses of
FB unit connected
securely?
No
Reconnect the each
harnesses of FB unit.
2
FB unit failure Is the problem solved by
replacing the FB unit?
Ye s
Replace the FB unit.
3
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Ye s
Replace the main PCB
ASSY.

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