Brother DCP-8070D Service Manual

3-71
Confidential
9. TROUBLESHOOTING OF THE CONTROL
PANEL
■ Nothing is displayed on the LCD.
<User Check>
- Verify if the power switch is turned off.
Step Possible cause Check
Result Remedy
1
Connection
between main
PCB and control
panel PCB
Are the main PCB and
control panel PCB
connected properly?
No
Reconnect the connector
properly.
2
Connection
between main
PCB and LVPS
PCB unit
Are the main PCB and
LVPS PCB unit
connected properly?
No
Reconnect the connector
properly.
3
LCD Is the problem solved
after replacing the LCD?
Yes
Replace the LCD.
4
Control panel
PCB
Is the problem solved
after replacing the
control panel PCB?
Yes
Replace the control panel
PCB.
5
LVPS PCB unit Is the problem solved
after replacing the LVPS
PCB unit?
Yes
Replace the LVPS PCB
unit.
6
Main PCB Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.

Brother DCP-8070D Specifications

General

Print technology	Laser
Maximum resolution	1200 x 1200 DPI
Economical printing	Yes
Duplex printing mode	Auto
Time to first page (black, normal)	8.5 s
Print speed (black, normal quality, A4/US Letter)	28 ppm
Duplex print speed (black, normal quality, A4/US Letter)	6.5 ppm
Scan to	E-mail, e-Mail, OCR, USB
Scanner type	Flatbed & ADF scanner
Grayscale levels	256
Input color depth	48 bit
Maximum scan area	216 x 356 mm
Output color depth	24 bit
Image formats supported	EXIF, JPG, TIF
Optical scanning resolution	600 x 2400 DPI
Copier resize	25 - 400 %
Maximum copy resolution	1200 x 600 DPI
Maximum number of copies	99 copies
N-in-1 copy function (N=)	4, 9, 16, 25
Time to first copy (black, normal)	10.5 s
Copy speed (black, normal quality, A4)	28 cpm
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	150 sheets
Multi-Purpose tray input capacity	50 sheets
Auto document feeder (ADF) input capacity	20 sheets
Display	LCD
Market positioning	Business
Display number of lines	2 lines
Display number of characters	16
Memory slots	1
Internal memory	64 MB
Processor family	NEC
Maximum internal memory	576 MB
Sound power level (standby)	30 dB
Sound pressure level (printing)	56 dB
Scan speed	2.49 sec/page
Dimensions (WxDxH)	390 x 443 x 442 mm
All-in-one functions	Copy, Print, Scan
Minimum scan area (ADF)	148 x 148 mm
Color all-in-one functions	Scan
Standard interfaces	USB 2.0
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	80 W
Power consumption (PowerSave)	9 W
Power consumption (average operating)	570 W
Operating temperature (T-T)	10 - 32.5 °C
Operating relative humidity (H-H)	20 - 80 %
Custom media width	70 - 216 mm
Custom media length	116 - 406.4 mm
Paper tray media types	Bond paper, Labels, Plain paper, Recycled paper, Transparencies
Paper tray media weight	60 - 105 g/m²
Non-ISO print media sizes	Letter
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5, B6
Multi-purpose tray media types	Bond paper, Envelopes, Heavyweight paper, Plain paper, Transparencies
Maximum ISO A-series paper size	A4
Multi-Purpose Tray media weight	60 - 163 g/m²
Auto Document Feeder (ADF) media weight	64 - 90 g/m²
Package weight	19.300 g
Maximum duty cycle	- pages per month
Page description languages	Epson FX, IBM ProPrinter, PCL 6
Mac operating systems supported	Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion
Windows operating systems supported	Windows 2000, Windows 2000 Professional, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Windows Vista Home Premium, Windows Vista Home Premium x64, Windows Vista Ultimate, Windows Vista Ultimate x64, Windows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64
Sustainability certificates	ENERGY STAR