Oki MC860 Maintenance Manual

43967002TH Rev.1
45 /
Oki Data CONFIDENTIAL
2. Theory of Operation
2.3.1.3 Fundamental operations
Drive force transmission diagram
The MFP is a document feed device of skim reading only. The MFP uses the two motors for
document feed and document transport.
Name (symbol) F unction
Transport motor (M1) It transports document.
Feed paper motor (M2) It separates and transports document.
[1]ADF driver circuit PCB [2] Document detection signal
[3] Document detection signal [4] Feed paper motor dive signal
[5] Document detection signal [6] Stamp solenoid drive signal
[7] Document set signal [8] Transport motor drive signal
[9] Separator solenoid drive signal [10] Final document detection signal
[11] Paper size (width) detection signal 1 [12] Paper size (width) detection signal 2
[13] Paper size (length) detection signal 1 [14] Paper size (length) detection signal 2
[15] Relay circuit PCB
(READ)CN8-6
(REG)CN8-3
(EMPTY)CN9-3
(EXIT)CN8-9
CN11
CN4
(LAST)CN7-3
PI5 PI4 PI8
PI11
PI3
PI7 PI6
2
[1]
[2] [3] [7] [5] [4] [8] [6] [9]
[13] [14]
[10]
PI2
[11]
PI1
[12]
[15]
Drive force diagram of the MFP is shown below.
Overview of operation modes
There are four operation modes that are executed by the MFP. The respective operation
modes are executed in accordance with the instructions given by the connected equipment
to implement the print operation.
Name of the operation modes, the overview of the operation and the corresponding print
modes are shown in the following table.
Name of the operation
modes
Overview of the operation Supporting print modes
[1] Normal direction feed
paper/Unload paper
Document is fed and
scanned. Upon completion
of scan, document is
unloaded as it is.
Single-sided document => Single-sided print
Single-sided document => Both-sided print
(This operation is performed in both cases
when documents of same width and
different width are used.)
[2] Normal direction feed
paper/ Inverted unload
paper
Document is fed and
scanned. Upon completion
of scan, document is
inverted and unloaded.
Both-sided document => Both-sided print
Both-sided document => single-sided print
(This operation is performed in both cases
when documents of same width and
different width are used.)
Normal direction feed paper and unload paper (single-sided document => single-
sided print) operation
Outline of document flow is shown below.
Supplement: When a single-sided document is selected, this operation is performed
regardless of the same size mixed documents or different sizes mixed
documents.
Document
Feed paper
Loop creation
Scanning
Unload paper
Scanning standby
Job end

Oki MC860 Specifications

Printing Specifications

print speed color	26 ppm
print speed black & white	33 ppm
time to first page color	10 seconds
time to first page black & white	9.5 seconds
print resolution	1200 x 600 dpi
processor	500 MHz PowerPC CPU
duty cycle	75, 000 prints per month

Copying Specifications

copy speed color	26 cpm
copy speed black & white	33 cpm
first copy out color	14.5 seconds
first copy out black & white	13 seconds
copy resolution	600 x 600 dpi

Scanning Specifications

scan type	Color and black & white
max scan area	11" x 17"
scan speed black & white	33 spm
scan speed color	26 spm
scan resolution	600 dpi

Fax Specifications

fax modem	33.6 Kbps Super G3
transmission speed	2 seconds/page
fax resolution	600 x 600 dpi
speed dial locations	500 locations
broadcast transmission locations	530 locations

Power and Acoustic Noise

power consumption peak	1, 300W
power consumption standby	160W Avg.
power save mode	≤25W
acoustic noise operating	54dB
acoustic noise standby	≤37dB

System Memory

standard imaging RAM	512 MB
max imaging RAM	768 MB
hard disk drive	40 GB

Weight and Dimensions

1-tray configuration dimensions	22.2" x 25.9" x 26.3"
2-tray configuration dimensions	33.3" x 30.2" x 44.5"
weight 1-tray configuration	149.9 lb
weight 2-tray configuration	200.6 lb
weight 3-tray configuration	211.6 lb