Brother MFC-7320 Service Manual

1-53
Confidential
11. Troubleshooting of fax functions
■ FAX can't be sent.
User Check
• Verify that the telephone cord is securely connected.
Step Cause Check
Result Remedy
1
Dial mode
Setting
Can a dialing signal (PB
or DP) be heard
normally in each mode?
(Use telephone line
emulator if required.)
Ye s
Check the dialing mode
setting at customer's
again. Check the
telephone line cord
between machine and
socket.
2
Connection
between main
PCB and NCU
PCB
Are the main PCB and
NCU PCB connected
correctly?
No
Reconnect the connector.
3
Connection
between main
PCB and control
panel PCB
Are the main PCB and
control panel PCB
connected correctly?
No
Reconnect the connector.
4
Contact of rubber
keys
Does the rubber keys
work correctly?
No
Replace the rubber Keys.
5
NCU PCB Is the problem solved
after replacing the NCU
PCB ASSY?
Ye s
Replace the NCU PCB
ASSY.
6
Control panel
PCB
Is the problem solved
after replacing the
control panel PCB?
Ye s
Replace the control panel
PCB.
7
Main PCB 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