Oki MB461 User Manual

Oki Data CONFIDENTIAL
44871001TH Rev.6
8-39
8. TROUBLESHOOTING PROCEDURES
8.5.5.(1) LCD Display Trouble
(1-1) LCD displays nothing
Check item Checking Action in case of fail
(1-1-1) Checking fuse
Fuse on SU board (MHE) Check whether F1 or F5 has
blown.
Replace F1 or F5 or SU
board (MHE).
(1-1-2) Checking connections
Connection between low-
voltage power supply unit and
SU board (MHE)
Make sure the low-voltage power
supply unit is connected to the
POWER connector on the SU
board (MHE) properly.
Check whether the cable
connector is half-connected
or tilted, or whether wires are
broken.
Check whether there is any
fault in the cable assembly, e.g.,
missing wires.
Connect the cable
properly.
Cable assembly connecting
low-voltage power supply unit
to SU board (MHE)
Replace the cable with
a good cable.
Connection between SU
board (MHE) and operation
panel
Make sure the 16-pin FFC is
connected to the OPE connector
on the SU board (MHE) properly.
Make sure the 16-pin FFC is
connected to the CN1 connector
on the OPE board (OPM)
properly.
Check whether the cable
connector is half-connected or
tilted.
Connect the cable
properly.
FFC connecting SU board
(MHE) to OPE board (OPM)
Check for broken wires using a
tester.
Check visually whether the
sheath peels.
Replace the cable with
a good cable.
Check item Checking Action in case of fail
(1-1-2) Checking connections
Connection between SU
board (MHE) and CU/PU
board
Make sure the 10-pin FFC
is connected to the GDIIF
connector on the SU board (MHE)
properly.
Make sure the 10-pin FFC
is connected to the MFPIF
connector on the CU/PU board
(98M) properly.
Check whether the cable
connector is half-connected or
tilted.
Connect the cable
properly.
FFC connecting SU board
(MHE) to CU/PU board (98M)
Check for broken wires using a
tester.
Check visually whether the
sheath peels.
Replace the cable with
a good cable
(1-1-3) Checking power supplies
AC power supplied to the
printer
Check the supplied voltage from
the AC power source.
Supply AC power.
5V power supplied to SU
board (MHE)
Check the 5V power at 3, 4pin of
the POWER connector on the SU
board (MHE).
Replace the low-voltage
power supply.
3.3V power supplied to OPE
board (OPM)
Check the 3.3V power at 14pin of
the CN1 connector on the OPE
board (OPM).
Replace the SU board
(MHE).
(1-1-4) Checking for short circuit of power supply
5V and 24V power supplied to
SU board (MHE)
Check for a short circuit using
the POWER connector on the SU
board (MHE).
7, 8pin: 24V
3, 4pin: 5V
5, 6pin: 0VL
9, 10pin: 0VP
If there is a short circuit, locate it.
Disconnect the cables from the
SU board (MHE) one by one to
locate the short circuit.
Replace the short-
circuited component.

Oki MB461 Specifications

General

Duplex printing	Yes
Maximum resolution	2400 x 600 DPI
Time to first page (black, normal)	5 s
Print speed (black, normal quality, A4/US Letter)	33 ppm
Scan file formats	BMP, GIF, JPG, PCX, PDF, TIFF, XPS
All-in-one functions	Copy, Print, Scan
Connectivity technology	Wired
Color all-in-one functions	No
Printing colors	Black
Maximum duty cycle	- pages per month
Number of print cartridges	1
Page description languages	Epson FX, IBM ProPrinter, PCL 5e, PCL 6, SIDM
Copier resize	25 - 400 %
Maximum copy resolution	600 x 600 DPI
Maximum number of copies	99 copies
Time to first copy (black, normal)	11 s
Copy speed (black, normal quality, A4)	33 cpm
Scan to	USB
Scan drivers	TWAIN
Scanner type	Flatbed scanner
Grayscale levels	7
Input color depth	48 bit
Output color depth	24 bit
Scan speed (black)	37.5 ppm
Scan speed (color)	10 ppm
Image formats supported	BMP, GIF, JPG, PCX, PNG, TGA, WMF
Document formats supported	PDF
Paper input type	Paper tray
Total input capacity	250 sheets
Total output capacity	150 sheets
Maximum input capacity	781 sheets
Maximum number of input trays	2
Multi-Purpose tray input capacity	1 sheets
Auto document feeder (ADF) input capacity	50 sheets
Envelopes sizes	DL
Maximum print size	210 x 297 mm
Paper tray media types	Envelopes
Paper tray media weight	0 - 80 g/m²
ISO A-series sizes (A0...A9)	A4, A5, A6
ISO B-series sizes (B0...B9)	B5
ISO C-series sizes (C0...C9)	C5, C6
Maximum ISO A-series paper size	A4
Display	LCD
Product color	Gray
Display resolution	320 x 128 pixels
Market positioning	Business
Direct printing	-
Standard interfaces	Ethernet, USB 2.0
Mobile printing technologies	Not supported
Supported network protocols (IPv4)	TCP/IPv4&v6, SMTP, POP3, HTTP, SNMPv1&v3, DHCP, DNS, LPR, Port9100, BOOTP, ARP, FTP, CIFS, LDAP, SLP
Sound power level (standby)	55 dB
Sound pressure level (quiet mode)	30 dB
AC input voltage	220 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (off)	0.5 W
Power consumption (standby)	3 W
Power consumption (PowerSave)	14 W
Power consumption (average operating)	950 W
Storage temperature (T-T)	-10 - 43 °C
Storage relative humidity (H-H)	10 - 90 %
Mac operating systems supported	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
Server operating systems supported	Windows Server 2003, Windows Server 2008, Windows Server 2008 R2
Windows operating systems supported	Windows 7 Home Basic, Windows 7 Home Basic x64, 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 Enterprise, Windows Vista Enterprise 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

Weight and Dimensions

Depth	425 mm
Width	427 mm
Height	455 mm