Brother MFC-9125CN Service Manual

7-54
Confidential
1.4.29 Developing bias voltage correction (Function code 83)
<Function>
This function performs developing bias voltage correction to fix the density of each color toner
when printed color is not correct.
<Operating procedure>
(1) Press the 8 and 3 buttons in this order in the initial state of the maintenance mode.
The machine displays “PLEASE WAIT” on the LCD.
(2) When the developing bias voltage correction is finished, the machine beeps for one
second and returns to the initial state of the maintenance mode.
When any of the following error messages is displayed, take a relevant measure given in
the table below.
* # indicates the toner color (Y, M, or C) of which cartridge became empty.
Note:
Before this function is performed, there is a need that the Sensitivity adjustment of density
sensor (maintenance mode 72) has been done more than once. When performing this
maintenance mode 83 after replacing the main PCB, make sure to perform the Sensitivity
adjustment of density sensor (maintenance mode 72) first.
Error message Measure
FAILED Remove the error factors with the following operations and
press the Start/Black button to clear the error.
- Re-insert the toner cartridge in the correct position.
- Replace the toner cartridge.
- Replace the drum unit.
- Replace the belt unit.
- Replace the registration sensor holder ASSY.
TONER EMPTY # * Replace the empty toner cartridge and press the OK button
to clear the error. Perform the developing bias voltage
correction again.
Cover is Open Close the top cover.
Replace Toner Replace the toner cartridge.
No Paper Replenish paper, and press the Start/Black button to clear
the error.
Jam Tray1 Remove the jammed paper, and press the Start/Black
button to clear the error.
Jam Rear Remove the jammed paper, and press the Start/Black
button to clear the error.
Note:
Any panel operation is invalid during the developing bias voltage correction.

Brother MFC-9125CN Specifications

General

DVD/CD printing	No
Print technology	LED
Maximum resolution	2400 x 600 DPI
Economical printing	Yes
Print speed (black, normal quality, A4/US Letter)	19 ppm
Fax compatibility	ITU-T G3
Dimensions (WxDxH)	429.3 x 490.2 x 398.8 mm
All-in-one functions	Copy, Fax, Print, Scan
Connectivity technology	Wired
Color all-in-one functions	copy, fax, print, scan
Printing colors	Black, Cyan, Magenta, Yellow
Maximum duty cycle	25000 pages per month
Number of print cartridges	4
Page description languages	BR-Script 3, PCL 6
Copier resize	25 - 400 %
Maximum copy resolution	- DPI
Maximum number of copies	35 copies
N-in-1 copy function (N=)	2, 4
Copy speed (black, normal quality, A4)	19 cpm
Scan to	CIFS, E-mail, File, FTP, Image, OCR
Scanner type	Flatbed scanner
Input color depth	48 bit
Maximum scan area	A4 / Letter (216 x 297) mm
Image formats supported	BMP, JPG, TIF
Maximum scan resolution	19200 x 19200 DPI
Optical scanning resolution	1200 x 2400 DPI
Fax memory	600 pages
Modem speed	33.6 Kbit/s
Fax coding methods	JBIG, JPEG, MH, MMR (Fax coding method), MR
Fax transmission speed	2 sec/page
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	100 sheets
Total number of input trays	2
Multi-Purpose tray input capacity	1 sheets
Maximum print size	216 x 356 mm
Paper tray media types	Bond paper, Envelopes, Labels, Plain paper, Recycled paper
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
Display	LCD
Market positioning	Business
Direct printing	-
Standard interfaces	Ethernet, USB 2.0
USB 2.0 ports quantity	1
Supported network protocols (IPv4)	ARP, RARP, BOOTP, DHCP, APIPA(Auto IP), WINS/NetBIOS name resolution, DNS Resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP/IPPS, FTP Client and ServerTELNET Server, HTTP/HTTPS server, TFTP client and server, SMTP Client, APOP, POP before SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMP, LLTD responder, WebServicesPrint, CIFS Client, SNTP, SSL/TLS
Supported network protocols (IPv6)	NDP, RA, DNS resolver, mDNS, LLMNR responder, LPR/LPD, Custom Raw Port/Port9100, IPP/IPPS, FTP Client and Server, TELNET Server, HTTP/HTTPS server, TFTP client and server, SMTP Client, APOP, POP before SMTP, SMTP-AUTH, SNMPv1/v2c/v3, ICMPv6, LLTD responder, WebServicesPrint, CIFS Client, SNTP, SSL/TLS
Maximum internal memory	576 MB
Sound power level (standby)	30 dB
Sound pressure level (copying)	53 dB
AC input voltage	120 V
AC input frequency	50 - 60 Hz
Power consumption (off)	11 W
Power consumption (PowerSave)	75 W
Power consumption (average operating)	480 W
Package weight	28490 g
Operating relative humidity (H-H)	20 - 80 %