Brother MFC-L8850CDW Service Manual

5-51
Confidential
1.3.27 Color test pattern (Function code 71)
<Function>
This function is used to print the pattern of each color and check if there is any dirty on or
failure in the belt unit, developer roller, and exposure drum, etc.
<Operating procedure>
(1) Press the 7 and 1 keys in this order in the initial state of the maintenance mode. “2D3S
YMCBWKW_A” is displayed on the LCD.
(2) Referring to the <Print pattern> table, press the or key to select the desired print
pattern and press the SET key. When “2D3S YMCBWKW_A” is selected, “PRINTING” is
displayed on the LCD and a test pattern printing is started. When a print pattern other than
“2D3S YMCBWKWK_A” is selected, “SELECT: A4” is displayed on the LCD. (Following
steps (3) to (6) described below, select an option in each item and perform test pattern
printing.)
(3) Referring to the <Paper size> table, press the or key to select the desired paper
size and press the SET key. “SELECT: PLAIN” is displayed on the LCD.
(4) Referring to the <Print specifications> table, press the or key to select the desired
media specifications and press the SET key. “SELECT: SX” is displayed on the LCD.
(5) Referring to the <Print type> table, press the or key to select the desired print type
and press the SET key. “SELECT: 1PAGE” is displayed on the LCD.
(6) Referring to the <Number of pages to be printed> table, press the or
key to select the desired number of pages to be printed and press the SET key.
“PRINTING” is displayed on the LCD and the test pattern starts to be printed under the
selected items for paper feed test.
(7) When printing is finished, the screen returns to the print pattern display. To print the test
pattern again, press the Mono Start key.
(8) Press the X key to return the machine to the initial state of the maintenance mode.
Note:
If printing fails, the error indications in the <Error message> table are displayed on the LCD
and printing is cancelled. To print again, refer to the measures in the table and remove the
cause of the error. Then, press the Mono Start key. “PRINTING” is displayed on the LCD
and the color test pattern is printed.

Brother MFC-L8850CDW Specifications

General

Type	all in one
Color	white
Tray Capacity	300
Automatic Document Feeder Capacity	50 sheets
Paper Size	8.5"x14"
Paper Handling	up to 300 sheets
Color Print Speed	32 pages per minute
Mono Print Speed	32 pages per minute
Print Resolution Color	up to 2400 x 600
Maximum Number of Pages Per Month	unknown
Scanner Type	flatbed
Scan Resolution	up to 2400 x 1200
Copier Resolution Mono	up to 600 x 600
Copier Resolution Color	up to 600 x 600
Cartridges	tn331bk, tn331c, tn331m, tn331y
Number Of Cartridges	4
Internal Memory	yes
Memory Card	no
Network	wired, wireless
Connectivity	usb, google cloud print
OS Compatibility	windows, mac os, linux
Mobile Devices Connection	yes

Weight and Dimensions

Height	19.3 inches
Width	20.7 inches
Net Weight	67.4 pounds