Parts marked with “” are important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
This document has been published to be used
SHARP CORPORATION
for after sales service only.
The contents are subject to change without notice.
tandem engine
High speed outputColor: 17 PPM (A4/LT)
2High-speed, first color copyColor: Within 11.7 sec
3Manual paper feed capacity300 sheets 64g/m
Heavy paper support64 to 300g/m
Heavy paper duplex feed
support
4Improved user maintenance Paper jam process: 2 positions of open/close (sides)Paper jam control technology
5Improved service
maintenance
670 x 676 x 787mm (26.4 x 26.6 x 31 inch)
85.5kg (185.5 lbs.) (Copier body + photoconductor + toner)
B/W: 26 PPM (A4/LT)
B/W: Within 8.0 sec
A4, without pre-scan, RSPF not used, side paper exit, tray 1
used
64 to 200g/m
Toner supply: Cartridge replacementMono-component wax-free toner
Developing section: Mono-component development
eliminates the need for developer replacement.
Drum section: Cartridge replacementDesigned for easy maintenance
Fusing section: Simplified structure by wax-free. The unit can
be disassembled simply by releasing the lock with the knob.
Transfer section: One-touch extraction. Designed for easy
belt replacement.
Color resist automatic adjustment:
Visual judgment by paper exit is automatically performed.
2
(17 lbs.)Development of a large capacity
2
(17 to 80 lbs.) (Manual paper feed tray)Oil-less fusing unit, paper feed/
2
(17 to 54 lbs.) (Face up paper exit)
Mono-component wax-free toner,
LED printhead
Same document continusly on A4
(LT) plain paper in non offset mode.
LED printhead
manual feed tray
paper transport technology
Mono-component wax-free toner
Mono-component wax-free toner.
Designed for easy maintenance
Designed for easy maintenance
Process control technology, which
allows user adjustment.
2. Newly employed technology
ItemContentRemark
1LED printhead employed• Employment of the 4bit LED provides
16-gradation expressions for each of YMCK.
• Free from mechanical noises which are produced
from the unit such as an LSU. Printing is started
immediately without waiting for stabilization of the
polygon motor speed.
• Lower power consumption than an LSU
2Oil-less fusing system employed• Development of a new wax-free toner
• The wax-free fusing system provides a simplified
structure and improved paper feed capability.
• Notes and remarks can be put on a copy image
similar to normal page.
Requires a duplex bypass/inverter unit. /
3-stage paper feed desk cannot be used.
Requires desk (3-stage/2-stage duplex paper feed
desk)
Large capacity tray (AR-LC8)OPRequires 2-stage duplex paper feed desk
Paper exit system Paper exit tray (AR-TE3)OP
Job shifterSTD
Saddle finisher (AR-F13)
OP
Requires a desk (3-stage/2-stage paper feed desk
with duplex) and a duplex bypass/inverter unit.
Punch unit (AR-PN1A/PN1B/PN1C/PN1D)OPFor saddle finisher
Staple cartridge (AR-SC2)OPFor saddle finisher
Electrical systemPrinter controllerSTD7410: 400 MHz type
Product Key
128MB expansion memory ∗1Local arrangement: For ICU or printer controller
256MB expansion memory ∗1Local arrangement or AR-SM5: For ICU or printer
controller
Network scanner expansion kit (AR-NS2)
OP
Product Key
Requires memory expansion of 256MB or more.
Sharpdesk license kit (AR-U11M/U15M)OP
Various connection cablesNot supported. Unavailable as an option (Use a commercially
available part.)
FAX systemFax controller (AR-FX10)OP
Fax memory (8 MB) (AR-MM9)OP
OtherData security kit (AR-FR23U)OP
∗1: The AR-SM5 (256MB) can be used. For the other memories, choose among commercially available ones (table below) and set.
other sizes than the above)
Envelope
Special size5 ppm5 ppm5 ppm5 ppm7ppm7 cpm7 cpm7 cpm
Magnification
ratio
x 18")5 ppm5 cpm5 cpm5 cpm7 ppm7 cpm7 cpm7 cpm
x 11"R)12 ppm12ppm12 ppm12 ppm19 ppm19 ppm19 ppm19ppm
"
x 10.5"R)12 ppm12 ppm12 ppm12 ppm19 ppm19 ppm19 ppm19ppm
1
)17ppm17 cpm17 cpm17 cpm17 ppm17 cpm17 cpm17 cpm
2
(B5, A4,
2
(Envelope*3and
2
(B5, A4, 8.5" x
*2
(Envelope*3 and
*3
(All kinds)5ppm5ppm5ppm5ppm6ppm6 cpm6 cpm6 cpm
ppm (print per minute): print per minute when printing two or more pages of a single document.
cpm (copy per minute): copy per minute when scan multi copying of a single document. When offset function OFF
*1: Max. speed*2: Heavy paper 1: 106 to 200g/m
*3: Kind of envelopes: COM10, Monarch, DL, C5
Normal
(100%)
17ppm17 cpm17 cpm17 cpm26 ppm26 cpm26 cpm26 cpm
13ppm13 cpm13 cpm13 cpm13 ppm13 cpm13 cpm13 cpm
6 ppm6 cpm6 cpm6 cpm6ppm6 cpm6 cpm6 cpm
13ppm13 cpm13 cpm13 cpm13 ppm13 cpm13 cpm13 cpm
6 ppm6 cpm6 cpm6 cpm6ppm6 cpm6 cpm6 cpm
Reduction
(25%)
2
Normal
(100%)
Enlargement
(400%)
Normal
(100%)
Reduction
(25%)
(28 lbs to 54lbs), heavy paper 2: 201 to 300g/m2 (54 lbs to 80lbs)
Normal
(100%)
Enlargement
(400%)
(2) First copy time
a. To side tray of main unit face up, with APS off and group
mode on
Platen/ RSPFB/WColor
PlatenWithin 8.0 sec. (A4/LT)Within 11.7 sec. (A4/LT)
RSPFWithin 10.5 sec. (A4/LT)Within 14.0 sec. (A4/LT)
b. To top of main unit face down, with APS off and group mode
on
Platen/ RSPFB/WColor
PlatenWithin 10.2 sec. (A4/LT)Within 15.0 sec. (A4/LT)
RSPFWithin 13.0 sec. (A4/LT)Within 17.0 sec. (A4/LT)
c. With rotation copying. To side tray of main unit face up, with
A4R original and A4 paper
Platen/ RSPFB/WColor
PlatenWithin 12.0 sec. (A4/LT)Within 17.0 sec. (A4/LT)
RSPFWithin 14.0 sec. (A4/LT)Within 19.0 sec. (A4/LT)
d. With rotation copying. To top of main unit face down, with
A4R original and A4 paper
Platen/ RSPFB/WColor
PlatensWithin 14.5 sec. (A4/LT)Within 19.5 sec (A4/LT)
RSPFWithin 16.0 sec. (A4/LT)Within 22.0 sec. (A4/LT)
Condition: The transfer belt positions are B/W positions.
(3) Job speed
a. For Group mode
Mode
S to S
(10pages
X 1set)
S to D
(10pages
X 5sets)
D to D
(5pages
X 5sets)
General copy condition:
Original size = A4 or (8.5" x 11"), Output to side tray by group
mode, Transfer belt position = B/W position, Paper feeding from
Tray 1, Not using APS, using RSPF, copy ratio: 100%
b. For E-sort mode ON
Mode
S to S
(10pages
X 1set)
S to D
(10pages
X 5sets)
D to D
(5pages
X 5sets)
General copy condition:
Original size = A4 or (8.5" x 11"), Output to side tray by E-sort
mode, Transfer belt position = B/W position, Paper feeding from
Tray 1, Not using APS, using RSPF, copy ratio: 100%
B/W (1-bit)ColorCondition by mode
600 x
600 x
1-bit or
600 x
600dpi
300dpi
20.5
cpm
20.0
cpm
20.0
cpm
B/W (1-bit)ColorCondition by mode
600 x
600dpi
300dpi
20.0
cpm
20.0
cpm
18.0
cpm
26.0
cpm
20.0
cpm
20.0
cpm
600 x
25.5
cpm
20.0
cpm
19.0
cpm
4-bit
4-bit
4-bit
4-bit
1-bit or
4-bit
1-bit
1-bit
1-bit
1st copyConfig
600dpi
12.0
Exclusive
cpm
14.0
cpm
Inclusive
14.0
cpm
600 x
1st copyConfig
600dpi
12.0
Exclusive
cpm
13.5
cpm
Inclusive
13.0
cpm
RSPF+bypass
module with
inverter unit
RSPF+Paper deck
(2trays +ADU)
+bypass module
with inverter unit
+512MB memory
RSPF+bypass
module with
inverter unit
RSPF+Paper deck
(2trays +ADU)
+bypass module
with inverter unit
+512MB memory
AR-C172M SPECIFICATIONS 3 - 4
(4) Continuous copy
Multi max. number 999 sheets
(Adjustable with key operator pogram)
(5) Resolution
Scan resolution 600 x 600 dpi
Writing resolution600 x 600 dpi
600 x 300dpi (B/W copy only, used RSPF
and 100%copy ratio)
(6) Copy document
Document sizeMax. A3 (11” x 17”)
Document kindSheet/book document
(7) Copy magnification ratio
Copy magnification
ratio
Custom magnification
ratio registration
Zoom50 to 200% (increment of 1% for 50 to
Independent zoomYes (OC: 25, 400%, 50 to 200%,
AB series: 25%, 50%, 70%, 81%,
86%, 100%, 115%, 122%, 141%,
200%, 400%
Inch series: 25%, 50%, 64%, 77%,
100%, 121%, 129%, 200%, 400%
(400% only in OC mode)
RGB adjustmentYes
Color balanceYes
Color Gamma adjustmentYes (OC only)
Brightness adjustment Yes
Contrast adjustmentNo
Sharpness adjustmentYes
Mirror imageYes
Single color6 colors (R, G, B, C, M,
Enlargement continuous
copy
Background eraseYes
A3 wide copyYes (OC only)
Auto color calibrationYes
Auto registrationYes
Paper: Yes
Yes
paper size only)
by the key operation.)
by the key operation.)
Yes
insertion only)
No
OFF allowed)
Option
∗ Requires Duplex
desk, Duplex pass/
Inverter.
No
10 is for visiting cards.
Y)
Yes (OC only)
AR-C172M SPECIFICATIONS 3 - 5
(10) Memory limitation matrix
CombinationStandardExpansion 1Expansion 2
ICU PWB
Copier specifications
Mode
Electronic
CopySingleColor
(4 bit)
Color
(1 bit)
B/WYesto A4 (8.5" x 11")400 surfaces400 surfaces680 surfaces
CopyDuplexColor
(4 bit)
Color
(1 bit)
B/WYesto A4 (8.5" x 11")400 surfaces400 surfaces680 surfaces
B/W (Electronic sort): Equivalent to "TEST SHEET B."SOPM: Scan Once Print (Copy) Many
Color (Electronic sort): [JBIG], [A3: 2 sheets], *1: Equal to “What’s color”, *2: Equal to “Fruits- Map”, *3: Equal to “Photo chart”
Note: 1) Interrupt copy is available in Electronic sort mode, only 1 set.
(Duplex copy, staple, Multi shot (N in 1) and Multi-enlargement are not available.)
2) Color E-sort as Interrupt copy is not available.
The scanner function is enabled by canceling the product key.
This function requires installation of an expansion memory of
256MB and a scanner expansion board.
(1) PUSH SCAN
PUSH SCAN is used to send scan data to PC or a file server by
the operation on the machine operation panel.
PUSH SCAN has the following three modes:
• SCAN TO E-MAIL (SMTP)
Scan data area attached to an E-mail.
• SCAN TO FILE SERVER (FTP)
Scan data are sent to a file server by FTP.
The URL can be e-mailed simultaneously.
• SCAN TO DESKTOP (FTP)
Scan data are sent to the desktop user. (Sharpdesk and the net-
work scanner tool are required.)
AR-C172M SPECIFICATIONS 3 - 6
a. Operation flow (PUSH SCAN)
1. Push [IMAGE SEND] button on the operation panel to switch
to the main menu of the image send mode.
2. Press [ADDRESS DIRECTORY] or [E-MAIL ADDRESS] button to set a destination. (The local address book cannot be
retrieved.)
3. According to the necessity, set the sender with [SENDER
LIST] button.
4. According to necessity, select the scanning conditions with
[EXPOSURE], [RESOLUTION], [FILE FORMAT] and [ORIGINAL] buttons.
5. Press the color start key or the black-and-white start key to
start scanning. When the color start key is pressed, scanning
is made in color. When the black-and-white start key is
pressed, scanning is made in black and white.
Engine operates according to the setting made, such as: LED
of the color start key is turned on or LED of mono start key is
turned on.
b. Basic operations (PUSH SCAN)
Network protocolTCP/IP, SMTP, FTP, (HTTP)
Trial mode requiredSupported by the service diag.
The upper limit is 500 scans (surfaces). Without canceling the product key, scanning functions are enabled.
500 counts in total of color and black-and-white scans.
There is no counter for trial. Resolution level: [lowest] or [lower] key only.
Destination registration500 items of scan to E-mail from Embedded Web Server + group, and 100itmes of Scan to FTP + Desktop
(Max. 600 items can be registered.)
Scan to E-mail and group can be registered from the operation panel.
A destination name can be set with max. 18 characters in two bytes (or 36 characters in one byte).
An E-mail address can beg set with max. 50 characters in one byte.
Address bookThe static address book stored in MFP is supported.
Destination selectSelected from the operation panel.
Selection of two or more destinations is allowed. (Only Scan to E-mail)
Sending to temporary users can be made.
CC: / BCC: Send enable
Sender selectSelect from the list of senders (20) on the operation panel.
If it is not set, the default which is set by Web is used.
Setting can be made from the key operator program.
Image setupImage quality setupColor (RGB, each 8bit), Monochrome binary (1bit)
Binary systemError diffusion
Text/photo area separationAutomatic
Moire reduction modeYes
Color enhancement modeN/A
DensityAutomatic (Monochrome only. For color, same as density 3 manual.)
Manual (9 steps: 1 to 5, 0.5 increment)
Default: 3
ResolutionColorMonochrome
Low 2100 dpi x 100 dpi150 dpi x 150 dpi
Low 1150 dpi x 150 dpi200 dpi x 200 dpi (Default)
Normal200 dpi x 200 dpi300 dpi x 300 dpi
High 1300 dpi x 300 dpi400 dpi x 400 dpi
High 2600 dpi x 600 dpi600 dpi x 600 dpi
The above resolutions are displayed on the panel. There is no optional setting of
90° (A document is rotated 90 degrees to be set. Used mainly for portrait image
scan of Legal, B4, A3. etc.)
Note: 600 x 600dpi A3 size full color scan: 90-degree image rotate every time.
Document detection sizeAutomatic detection (The automatic detection allowable size can be set by the
key operation.)
Manual setup (Automatic detection cancel: Fixed sizes)
Manual setup (Automatic detection cancel: Other than fixed sizes)
AB series: mm setting, inch series: inch setting
Document type/ Image
quality type
Text
Text/Printed Photo
Text/Photograph
Printed Photo ∗
Photograph ∗
Color (RGB x 8bits)PDF High compression (Multi page allowed)
Filed by each pageON / OFF
Process when the specified value is exceededThe specified size can be set with the key operator program. When the size
OC multi scan Documents of two or more pages can be set as one file from the platen. (Except
Job historyThe job history is not recorded.
UtilitySharpdesk V3.0 or later
LDAPYes
JOB restrictionThe scanner mode is disabled during printing. After completion of a print job, it is
User AuthenticationYes
POP before SMTPYes
Address Book Non Anonymous for NSTYes
PDF Medium compression (Multi page allowed)
PDF Low compression (Multi page allowed)
JPEG High compression (Multi page inhibited)
JPEG Medium compression (Multi page inhibited)
JPEG Low compression (Multi page inhibited)
Multi page inhibited: Means images on two or more pages cannot be sent as one
file. They can sent or saved as two or more attached files.
(In JPEG, fixed to ON.)
exceeds the specified level, scan is cancelled.
for JPEG)
enabled. (Print controller restriction)
(2) Scanner function memory restriction matrix
CombinationStandardExpansion-1Expansion-2
ICU PWB
Network scan
specifications
Printer
controller
PWB
Trial
mode
PUSH scan
Normal
mode
(Option)
∗: Expansion memory must be installed to both of the Copier ICU and the Printer board.
Fusing separation pawl lowerx 2
3 Transfer belt kitAR-C26TTTransfer beltx 1100K *1
4 Transfer roller kitAR-C26TXTransfer rollerx 4100K
5 Transfer waste toner tank unitAR-C26HBTransfer waste toner tank unitx 1100K
6 Filter kitAR-C26FLOzone filter Ax 150K
6 Transfer belt unitAR-C26TUTransfer unit for servicing100K *1
Fusing unit for servicing
(including upper/lower heater lamps)
*1: Replace at 100K or within 2 years
*1
AR-C172M CONSUMABLE PARTS 4 - 1
3. Photoconductor cartridge, toner cartridge
A. Lot number identification and the term of validity
(1) Photoconductor
(1)Alphabet
(2)Figure
(3)Figure or X, Y, Z
(4) (5) Figure
(6)Alphabet
(1) (2) (3) (4) (5) (6)
The term of validity: 36 months from the production day (month).
(2) Photoconductor cartridge
(1)Figure
(2)Figure
(3)Alphabet
(4)Alphabet
(5) (6) Figure
(7)Figure or X, Y, Z
Indicates the model support code.
Indicates the end digit of the packing year.
Indicates the packing month. (X= October, Y= November,
Z= December)
Indicates the packing day.
Indicates the production division.
Version No.
The end digit of the year.
Production code (B for SOCC)
Destination code
Production day
Indicates the production month. (X= October, Y= November,
Z= December)
(1) (2) (3) (4) (5) (6) (7)
The term of validity: 36 months from the production day (month).
(3) Toner cartridge
(1)
(4)(5)(6)(7)
The term of validity: 24 months from the production day (month).
(2)(3)
(1)Alphabet or figure
Unit code
(2)Alphabet
Destination code
(3)Alphabet
Skating
(4)Alphabet
Production site code
(5)Figure
Serial number (5 digits)
(6)Figure
Production year, month, day (6 digits)
(7)Alphabet
Version No. (A ~ sequentially revised)
AR-C172M CONSUMABLE PARTS 4 - 2
[5] UNPACKING AND INSTALLATION
1. Installing (use) conditions
Before installing the machine, check that the following installing
(use) conditions are satisfied.
If the installing (use) conditions are not satisfied, the machine may
not display full performances, resulting in troubles. It may also
cause safety problems. Therefore, be sure to arrange the installing
(use) conditions before setting up the machine.
No.Content
1Bringing space
2Installing space
3Power source (Capacity, fluctuation, safety)
4Floor strength
5Direct rays of the sun, dust, temperature, humidity,
gases, chemicals
A. Bringing space
For installation of a large size machine, be sure to check that the
door size is great enough before bringing in.
B. Installing space
The following space must be provided around the machine in
order to assure machine performances and proper operations.
If any option is installed, provide the additional space for installing
it.
Especially the space at the rear of the machine must be provided
sufficiently. If not, the machine cannot exhibit functions against
heat and dust, causing some troubles.
30cm
(11.8")
80 cm
(31.5")
60cm
(23.6")
60cm
(23.6")
(3) Power frequency, waveform
The frequency must be within the range of the specified frequency
±2%. If power waveform is deformed, a trouble may occur.
(4) Safety
Be sure to properly ground the machine.
(5) Power plug
Check the form of the power plug. If the shape does not match, do
not use it.
D. Floor strength and level
This machine is considerably heavy and becomes heavier with an
option installed.
The floor must be strong enough for assuring safety.
If not, color shift or image distortion may occur.
E. Direct rays of the sun, dust, temperature,
humidity, gasses, chemicals, vibration
(1) Temperature and humidity
This machine is designed to perform properly under the specified
temperature and humidity. If the temperature and humidity
exceeds the specified range, the machine may not operate properly and or cause equipment failure.
Especially when the humidity is too high, paper absorbs humidity
to cause a paper jam or dirty copy.
C. Power source
(Capacity, voltage, frequency, safety, plug)
If the power specifications are not satisfied, the machine cannot
exhibit full performances and may cause safety trouble.
Strictly observe the following specifications.
(1) Power capacity
Check that the following power capacity is satisfied. If not, additionally provide a power source.
Current capacity
100V: 15A or more
200V: 10A or more
(2) Power voltage
Measure the voltage during copying to check that the voltage is in
the range of the specified voltage ±10%.
If the voltage is outside the specified range, use thicker lead wires
to reduce impedance.
(An electrical work is required.)
Use of a step-up transformer is also available. In this case, the
capacity must be great enough for the max. power consumption of
the machine.
AR-C172M UNPACKING AND INSTALLATION 5 - 1
(Do not install the machine near a stove, a humidifier, or an air
conditioner.)
Do not install the machine near a heater, a cooler, or a humidifier.
Dew may be formed inside the machine to cause a trouble. Use
enough care for ventilation.
Humidity (RH)
80%
60%
20%
15˚C30˚C35˚C
Temperature
(2) Dust
If dust enters the machine, it may cause dirty copy and a paper
jam, resulting in a shortened lifetime.
(3) Direct rays of the sun
If the machine is installed under the rays of the sun, the exterior of
the machine may be discolored and abnormal copies may be produced.
(4) Gases and chemicals
Do not install the machine at a place where there are gases and
chemicals. Especially be careful to avoid installation near a diazotype copier, which produces ammonium gas.
Copy quality may be adversely affected and a trouble may be
caused.
2. Transit and delivery
No.ContentMethod
1 Implements, facility,
and man power
2 DeliveryTransit must be made in packed
Use a forklift. (If no forklift is available,
manpower of four persons is
required.)
condition.
A. Implements, facility, and manpower
It is recommendable to use a forklift for bringing in the machine for
safety.
If no forklift is available, man-power of four persons is required.
The machine is considerably heavy, and requires safety precautions for delivery and installation.
Transit of the machine must be made in packed condition to the
installing place.
B. Delivery
Remove the packing materials prior to installation in the ofice environment.
3. Unpacking
A. Unpacking procedure
1) Remove the PP band.
2) Remove the top case.
3) Remove the internal packing pads and the items packed
together with the machine.
4) Remove the machine from the package.
(5) Vibration
Avoid installation near a machine which produces vibrations.
If vibrations are applied to the copier machine, copy images may
be deflected and a trouble may be caused.
AR-C172M UNPACKING AND INSTALLATION 5 - 2
Fixing tape and protection pads removal
1) Remove the fixing tape and protection pads from the machine.
2
1
1
1
4. Lock release
A. Scanner (2/3 mirror unit) lock release
1) Remove the scanner fixing screw, and remove the caution
label.
1
1
1
2) Open the left door, and remove the transfer fixing pads.
1
1
2
1
3
B. Main body cassette lock release
1) Pull out the main body cassette.
2) Remove the rotation plate fixing pad and remove the caution
label.
2
3
1
C. Transfer unit pressure release
1) Pull the knob and open the left door.
AR-C172M UNPACKING AND INSTALLATION 5 - 3
2) Loosen the roller knob (A), and remove the fusing unit (B).
B
6) Remove the screw and apply a tension to the transfer belt.
A
3) Hold section A of the transfer unit and pull it out so that the
both sides of the transfer unit can be held.
4) Hold sections B and remove the transfer unit.
B
A
5) Remove the transfer belt protect sheet.
7) Install the transfer unit to the machine.
5. Fusing heat roller pressing (F/R)
1) Pull the knob and open the left door.
2) Turn the pressure release lever to press.
Note: If the machine is left for one month or more, the heat roller
rubber may be deformed. In such a case, therefore, release
the pressure.
AR-C172M UNPACKING AND INSTALLATION 5 - 4
6. Black drum cartridge insertion
1) Pull the knob and open the left door.
2) Open the front cover.
8. Toner cartridges installation
* The life of each toner cartridge packed together with the
machine is as follows:
Black toner CA: 8.3K (6%) equivalent
Color toner CA: 5.5K (5%) equivalent
1) Shake the toner cartridge horizontally several times.
2
3
1
3) Insert the black drum cartridge, and fix it with a screw.
2) Remove the tape, and remove the protection pad.
2
1
3) Open the front cover.
4) Insert the toner cartridge.
∗ As shown below, fit the cartridge with the insertion port and
push it in.
7. Paper exit tray installation (Optional)
1) Install the paper exit tray to the left door.
Note: Be sure to install the color cartridges to their proper posi-
tions. Avoid instillation to a different color position.
AR-C172M UNPACKING AND INSTALLATION 5 - 5
[Color toner cartridge positions]
Yellow
Magenta
Cyan
9. AC cord connection
1) Insert the AC power plug into the connector at the rear of the
machine, and connect the other end to the power outlet.
Black
2
5) Insert the cartridge securely until it locks.
6) Return the cartridge lever to the original position.
7) Close the front cover.
1
10. Machine power ON
1) Turn on the power switch on the left side of the machine.
1
AR-C172M UNPACKING AND INSTALLATION 5 - 6
11. Specifications setup
Used to set the specifications with SIM26 according to the customer's request.
SIM NoContent
266Used to set the destination.
To customize the following items after completion of the destination setup, change the set values.
SIM NoContent
262Used to set the large capacity paper feed tray paper
size.
Used to set the detection paper size and display
when using 8.5 x 13 size paper and document.
Used to set the paper kind and the display form in the
manual paper feed mode.
3Used to set the auditor specification mode.
5Used to set the count mode of the total counter and
the maintenance counter.
18 Used to set YES/NO of the toner save mode (Only in
UK and Japan versions) For other destination
versions, this setup is made by the user program.
52 Used to set YES/NO of counting when non-print
paper is passed through each counter.
53 Used to set YES/NO of user calibration permission.
65 Used to set the limit number of sheets for stapling.
On completion of the installation of the AR-F13 finisher, please
change the default output tray of the machine to the top tray of the
finisher.
12. Image quality check
Check the following items related to image quality. For details of
the adjustment and checking procedures, refer to the chapter of
adjustments.
1) Image focus, image skew (Refer to ADJ 3.)
2) Image registration (Refer to ADJ 4.)
3) Image loss, void area (Refer to ADJ 10.)
4) Copy color balance, density (Refer to ADJ 11.)
Check that the above items are normal. If not, make the adjust-
ment.
13. Function and operation check
Check that the following operations are normal.
Check itemInstallation
Key input operation (Operation
panel)
Display (Operation panel)
Paper feed
operation
Paper size detection operation
Document size
detection
operation
RSPF
operation/
Duplex copy
operation
Bookbinding operationWhen the finisher is installed.
Stapling operationWhen the finisher is installed.
Grouping operationWhen the finisher is installed.
Sorting operationWhen the finisher is installed.
Manual paper
feed
Machine paper
tray
Desk unit paper
feed tray
Document table
mode
RSPF mode
S-S mode
D-S mode
S-D modeWhen the desk unit with the
D-D modeWhen the desk unit with the
When the desk unit is installed.
duplex unit is installed.
duplex unit is installed.
14. Setup and adjustment data recording
Print the various setup data and the adjustment data (list) with
SIM22-6 and keep the data.
In case of a memory trouble, if the data are not kept, all the adjustments must be made again.
If the data are kept, the setup values and the adjustment values
can be entered without adjustments, shortening the servicing time.
15. Necessary works before moving the
machine
1) If the following options are installed, remove all of them from
the machine.
• Finisher
• Reverse unit
• RSPF unit
• Desk unit
2) Remove the following consumable parts from the machine.
• Paper
• Toner cartridge
• Photoconductor cartridge
3) Lock the following sections.
• Scanner (Optical section)
• Paper cassette lift plate
AR-C172M UNPACKING AND INSTALLATION 5 - 7
[6] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. Name and function of each section
A. External view
1234
Without the duplex
bypass/inverter unit
(14) installed.
5678
9
10
1413 1211
No.
1Left trayFinished sheets are deposited here.
2Left side coverOpen this cover when a paper misfeed occurs in the fusing unit or the transfer
3Reversing single pass feederThis automatically feeds originals to be scanned.
4Power switchPress to turn power on and off.
5Front coverOpen to replace toner cartridge.
6Operation panelPerforms various functions with the operation keys and the touch panel.
7Centre trayFinished sheets are deposited here.
8Bypass traySpecial papers (including transparency film) and copy paper can be fed from the
9Stand/1 x 500 sheet paper
drawer
10Stand/3 x 500 sheet paper
drawer
11Duplex module/2 x 500 sheet
paper drawer
12Paper trayEach tray can hold approximately 500 sheets of the recommended paper for color
13Left side cover releasePush this release up to open the left side cover.
14Duplex bypass/inverter unitThis module is required to automatically turn paper over within the machine for
NameFunction
unit.
The feeder can turn the original over and scan the back side as well as the front
side for support of two-sided originals.
bypass tray.
This stand has one paper tray. It can hold approximately 500 sheets of the
recommended paper for color (80 g/m
SHARP standard paper (64 g/m
This stand has three paper trays. Each tray can hold approximately 500 sheets of
the recommended paper for color (80 g/m
sheets of SHARP standard paper (64 g/m
This stand includes a module for automatic two-sided printing and two paper
trays. The two trays can hold approximately 500 sheets of the recommended
paper for color (80 g/m
standard paper (64 g/m
bypass/inverter unit (AR-RB1) is required.
2
(80 g/m
g/m
automatic two-sided printing.
or 21 lbs.), or approximately 550 sheets of SHARP standard paper (64
2
or 21 lbs.).
Parts
2
or 21 lbs.), or approximately 550 sheets of
2
or 21 lbs.).
2
or 21 lbs.), or approximately 550
2
or 21 lbs.).
2
or 21 lbs.), or approximately 550 sheets of SHARP
2
or 21 lbs.). To perform two-sided printing, a duplex
Note
Option
(AR-D17N)
Option
(AR-D18N)
Option
(AR-D19N)
Option
(AR-RB1)
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 1
B. Internal structure
1516
17
18
No.
15Fusing unitToner images are fused here.The fusing unit is hot. Take
16Toner cartridgeThe toner cartridge must be replaced when indicated on the
17Right side coverOpen when a misfeed has occurred in the paper feed area.
18Right cover of paper drawerOpen this cover to remove paper misfed in the paper drawer.
NameFunction
operation panel.
Parts
Note
care in removing misfed paper.
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 2
C. Operation panel
1
2
8
34 567
No.
NameFunction
1Touch panelThe machine status, messages and touch keys are displayed on the panel. When using the
touch panel, first change the display to the mode that you wish to use: printer mode, copy
mode, network scanner mode*
2Mode select keys and indicatorsUse to change modes and the corresponding display on the touch panel.
[PRINT] key/READY indicator/DATA indicator
Press to enter the printer mode.
READY indicator
Print data can be received when this indicator is lit.
DATA indicator
Lights up or blinks when print data is being received. Also lights up or blinks when printing is
being performed.
[IMAGE SEND] key/LINE indicator/DATA indicator
Press this key to switch the display between network scanner mode*
[COPY] key
Press to select the copy mode.
3[JOB STATUS] keyPress to display the current job status.
4[CUSTOM SETTINGS] keyUse to adjust the contrast of the touch panel or to set key operator programs.
5Numeric keysUse to enter number values for various settings.
6[*] key ([ACC.#-C] key)This is used when the copy, network scan*
7[#/P] keyThis is used as a program key when using the copy function, and to dial when using the fax
function*
2
.
8[C] keyThis key is used in copy mode, network scanner mode*
9[BLACK COPY START] keyThis is used to make black and white copies and to scan a black and white original when the
network scan function is used. This is also used to scan an original to be faxed using the fax
function*
2
.
10[CA] keyThis key is used in copy mode, network scanner mode*
11[COLOR COPY START] keyThis is used to make full-color or single-color copies and to scan a color original when the
network scanner function is used.
*1: When the network scanner option is installed.
*2: When the fax option is installed.
Parts
1
, or fax mode*2 .
1
and fax mode*2.
1
, and fax*2 functions are used.
1
, and fax mode*2.
1
, and fax mode*2.
11
10
9
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 3
D. Job status screen (common to print, copy, network scan and fax)
This screen is displayed when the [JOB STATUS] key on the operation panel is pressed.
A job list showing the current job at the top of the job queue or a list showing completed jobs can be displayed.
The contents of jobs can be viewed or jobs can be deleted from the queue. (The screen below is an example and differs from actual
screens.)
1
JOB QUEUE
COPY
SHARP001
SETS / PROGRESS
003 / 000
003 / 000
STATUS
PAPER EMPTY
WAITING
JOB QUEUE
1/1
*
COMPLETE
2
DETAIL
066211221
001 / 000
WAITING
PRIORITY
STOP/DELETE
PRINT JOBSCANNER JOB
FAX JOB
3456789
No.
1Job listThis shows the current job and the jobs waiting to be run. The icons to the left of the jobs in the queue
2Mode select keyThis only appears in the job status screen of fax mode. The key is used to switch the job list display
3[PRINT JOB] keyUse to display the print job list for printer, copy and fax mode.
4[SCANNER JOB] keyThis displays a list of only the jobs that use the network scanner function. (Only when the network
5[FAX JOB] keyThis displays the transmission/reception status and finished jobs of fax mode when the fax option is
6Display switching keysUse to switch the page of the displayed job list.
7[STOP/DELETE] keyUse to cancel or delete the current job or delete the selected reserved job. Note that a fax print job cannot
8[PRIORITY] keyThis only appears in the job status screen of fax mode. Touch this key to give priority to a job that has
9[DETAIL] keyThe key is only effective for computer print jobs and only appears in the job status screen of the printer
NameFunction
show the job mode.
Copy mode Printer mode
Network scanner mode
Fax send jobFax reception job
The displayed jobs in the job list are themselves operation keys. To cancel printing or to give a job the
highest print priority, touch the relevant job key to select the job and execute the desired operation using
the keys described in 5 and 6.
* "PAPER EMPTY" in the job status display
When a job status display indicates "PAPER EMPTY", the specified paper size for the job is not loaded in
any of the trays.
When the [DETAIL] key appears, the key of a job in the job queue can be touched followed by the
[DETAIL] key to change the paper size selection to a different paper size (only in printer mode).
between "JOB QUEUE" and "COMPLETE".
"JOB QUEUE": Shows stored jobs and the job in progress.
"COMPLETE" : Shows finished jobs.
scanner function is added.)
installed.
be cancelled or deleted.
been selected in the job queue.
mode. It is used to display detailed information of a selected print job and to change the paper size for the
print job.
Parts
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 4
E. Cross section
2134 5617
6265747377 7666 75 70 6763,64
61
59
58
56
54
53
52
51
50
49
48
47
46
45
44
43
42
41
57
55
20
242526
212223
19
39
68
69
9
71
72
18
7
15
8
27
28
29
3840
1660
30
31
32
33
34
35
36
37
11
10
12
13
14
No.
NameFunction
Parts
1No. 3 mirrorLeads a document image to the CCD.
2No. 2 mirrorLeads a document image to No. 3 mirror.
3No. 1 mirrorLeads a document image to No. 2 mirror.
4Scanner lampRadiates light on a document for the CCD to scan the document image.
5Yellow toner cartridgeAttaches yellow toner to electrostatic latent images on the
photoconductor.
6Magenta toner cartridgeAttaches magenta toner to electrostatic latent images on the
photoconductor.
7Cyan toner cartridgeAttaches cyan toner to electrostatic latent images on the photoconductor.
8Black toner cartridgeAttaches black toner to electrostatic latent images on the photoconductor.
9Discharge lampDischarges the photoconductor.
10Main charger unitCharges the magenta photoconductor negatively.
11LED unitConverts the color component image signal sent from the ICU PWB into
LED light, and radiate it to the OPC drum.
12Doctor bladeRegulates the toner quantity on the developing roller.
13Supply rollerSupplies toner to the developing roller.
14Developing rollerAttaches toner to the photoconductor.
15Cleaning bladeCleans residual toner from the photoconductor.
16OPC drum unitForms electro-static latent images.
17CCD lensReduces document images (light) and projects it to the CCD.
18CCD PWBReads document images (photo signals) and converts them into electrical
signals.
19Transfer roller (K)Applies the transfer voltage to the transfer belt.
20Transfer roller (C)Applies the transfer voltage to the transfer belt.
21Transfer roller (M)Applies the transfer voltage to the transfer belt.
22Transfer roller (Y)Applies the transfer voltage to the transfer belt.
Note
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 5
No.
NameFunction
Parts
Note
23Transfer beltTransfers toner images of the photoconductor onto paper.
24Waste toner box (Transfer section)Collects waste toner on the transfer belt.
25Lift-up unitLifts the transfer belt.
26Paper pickup roller (No. 1 tray)Sends paper to the paper feed roller.
27Idle rollerApplies a pressure to paper and the transport roller to provide transport
power of the transport roller to paper.
28Manual paper feed rollerFeed paper to the paper transport section.
29Paper pickup rollerSends paper to the paper feed roller. Manual paper
feed section
30Separation rollerSeparates paper to prevent double feed.
31Manual paper transport rollerTransports paper to the resist roller.
32Upper resist rollerTransports paper to the transfer section.
33Lower resist rollerTransports paper to the transfer section.
34Idle rollerPrevents paper skew.
35Paper transport roller 1Transports paper to the resist roller.
36Paper feed roller (No. 1 tray)Feed paper to the paper transport section.
37Separation roller (No. 1 tray)Separates paper to prevent double feed.
38Idle rollerApplies a pressure to paper and the transport roller to provide transport
power of the transport roller to paper.
39Paper transport roller 2Transports paper to the transport roller 1.
40Fusing unitFuses toner on paper.
41Lower heat roller thermistorDetects the temperature on the fuser roller surface.
42Lower heat roller thermostatDetects an abnormally high temperature and turns off the heater lamp.
43Lower heat rollerHeats and presses toner on paper to fuse toner on paper.
44Lower heater lampHeats the lower fuser roller.
45Lower separation pawlMechanically separates paper which was not separated naturally from the
lower heat roller.
46Fusing transport rollerTransports paper after fusing.
47Idle rollerApplies a pressure to paper and the transport roller to provide transport
power of the transport roller to paper.
48GateSwitches the paper exit path. (face up, face down)
49Upper heater lampHeats the heat roller.
50Upper heat rollerHeats and presses toner on paper to fuse toner on paper.
51OPC drumForms latent static electrostatic images with LED light.
52Upper heat roller thermistorDetects the temperature on the heat roller surface.
53Upper heat roller thermostatDetects an abnormally high temperature and turns off the heater lamp.
54Idle rollerApplies a pressure to paper and the transport roller to provide transport
power of the transport roller to paper.
55Transfer belt cleaning bladeCleans toner on the transfer belt.
56Paper transport roller 3Transport paper to the paper exit roller.
57Belt waste toner transport shaftTransports waste toner on the transfer belt to the waste toner box.
58Paper exit rollerDischarges paper to outside of the machine.
59Idle rollerApplies a pressure to paper and the transport roller to provide transport
power of the transport roller to paper.
60DrumForms electrostatic latent images by LED light.
61Document length sensor (L2)Detects the tray document length.
62Document length sensor (L1)Detects the tray document length.
63Document set sensor (W0)Detects presence of document.
64Document width sensor (W1, W2, W3) Detects the document width.
65Pickup rollerPicks up a document.
66Paper feed rollerFeeds and transports a document.
67Paper entry sensor (PAPER)Detects transport of a document.
68PS rollerSynchronizes the document lead edge and the image lead edge.
69PS follower rollerSynchronizes the document lead edge and the image lead edge.
70Transport rollerTransports a document.
71Transport follower rollerTransports a document.
72Paper exit sensor (PO)Detects transport of a document.
73Paper exit follower rollerDischarges a document.
74Paper exit rollerDischarges a document.
75Reverse gateOpens/closes the document reverse path.
76Paper exit gateSwitches the discharged paper path to the intermediate tray or to the
paper exit tray.
77Intermediate trayReceives paper in document reverse operation.
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 6
F. Motors, clutches, solenoids, fans
1
5
4
3
2
7
8
24
28
27
25
26
14
11
9
23
12
22
10
15
18
17
16
21
13
6
No.
1Exit select gate solenoidDrives the exit path select gate. GSSElectromagnetic solenoid
2Offset motor (Slide motor)Drives the paper exit offset.OSMStepping motor
3Fusing drive motorDrives the fusing unit. FUSMStepping motor
4Exhaust fan motor 1Exhaust and cools the fusing section. VFMPDC motor
5Exhaust fan motor 2Exhaust and cools the fusing section.VFMSDC motor
6Power unit cooling fan
motor
7Drum motor (Y)Drives the yellow photoconductor unit. DM_YStepping motor
8Drum motor (M)Drives the magenta photoconductor unit.DM_MStepping motor
9Drum motor (C)Drives the cyan photoconductor unit.DM_CStepping motor
10Drum motor (K)Drives the black photoconductor unit.DM_KStepping motor
11Printer controller cooling
fan motor
12PS motorDrives and turns ON/OFF the resist roller. PSMStepping motor
13Process cooling fan motorExhaust and cools the process section. PCFMDC motor
14Scanner motorDrives the scanner unit.SMStepping motor
15PS front clutchTransmits power of the paper feed motor to the manual
16Paper feed motorDrives the paper feed section and the paper transport
17Paper feed clutchTransmits power of the paper feed motor to each transport
18Manual paper feed clutchControls ON/OFF of the manual paper feed roller. Presses
19Paper feed drive clutchControls ON/OFF of the paper feed roller. CPFC1Electromagnetic clutch
20No. 1 cassette lift-up motorDrives the lift plate.LUM1Synchronous motor
21Belt lift-up motorLifts the transfer belt unit. BLUMStepping motor
NameFunction
Cools the power unit. PSFMDC motor
Cools the printer controller.
paper feed unit. (Controls ON/OFF.)
section.
roller. (Controls ON/OFF.)
the paper pickup roller to paper.
Parts
20
19
Code,
signal name
MTRCElectromagnetic clutch
PFMDC servo motor
TRCElectromagnetic clutch
MPFCElectromagnetic clutch
Type
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 7
No.
NameFunction
22Calibration plate open/
Parts
Switches the image density sensor.CALSElectromagnetic solenoid
Code,
signal name
Type
close solenoid
23Transfer belt motorDrives the transfer belt. BTMStepping motor
24Pickup solenoidDrives the document pickup roller.PSOLElectromagnetic solenoid
25Pressure release solenoidPaper exit roller pressure, release, controlRSOLElectromagnetic solenoid
26PS clutchDocument resist clutchCLHElectromagnetic clutch
27RSPF motorRSPF drive motorMOTStepping motor
28Gate solenoidGate switch solenoid in duplexGSOLElectromagnetic solenoid
G. Sensors, switches and heaters
5
4
3
7
43
52
51
49
48
47
2
45
54
46
50
42
53
8
41
40
9
10
11
Lift-up unit
12
39
13
38
37
36
14
21
15
16
17
18
19
35
34
33
32
31
29
28
27
26
25
24
22
23
Front / right side / top view
30
No.
2O/C open/close sensorDetects open/close of the document cover. (A timing signal of
3Offset home position sensorDetects the offset home position. HPOSPhoto sensor (Photo
4Paper exit tray full detectionDetects full of the face down paper exit tray. TFD2Photo sensor (Photo
5Mirror home position sensorDetects the scanner home position.MHPSPhoto sensor (Photo
7Dehumidifier heater switchTurns ON/OFF the dehumidifier heater installed in the scanner
12No. 1 paper transport sensorDetects paper in front of the resist roller. PPD1Photo sensor (Photo
NameFunction
Parts
document size detection is produced.)
(reading) section and the paper feed section.
Code, signal
name
OCSWPhot o sensor (Photo
DHSW
(Japan only)
Type
transmission)
transmission)
transmission)
transmission)
—
transmission)
transmission)
transmission)
transmission)
transmission)
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 8
No.
13Paper feed door open detectionDetects open/close of the paper feed door. DSWRMicro switch
14Manual feed paper empty detectionDetects paper empty on the paper tray.MPEDPhoto sensor (Photo
15Manual feed tray pulling out detection 2Detects the paper tray position.MTOP2Contact switch
16No. 1 cassette paper size detection 1Detects the paper size set by the paper size set blocks. C1SS1Contact switch
17No. 1 cassette paper size detection 2Detects the paper size set by the paper size set blocks.C1SS2Contact switch
18No. 1 cassette paper size detection 3Detects the paper size set by the paper size set blocks.C1SS3Contact switch
19No. 1 cassette paper size detection 4Detects the paper size set by the paper size set blocks.C1SS4Contact switch
21Manual feed paper length detection 2Detects the paper length.MPLD2Photo sensor (Photo
22Manual feed tray pulling out detection 1Detects the paper tray position.MTOP1Contact switch
23Manual feed paper length detection 1Detects the paper length. MPLD1Photo sensor (Photo
24Humidity sensorDetects the ambient humidity.HUD—
25No. 1 cassette paper feed detectionDetects paper exit from No. 1 paper tray.PFD1Photo sensor (Photo
26Manual feed paper width detectionDetects the paper width.MPWSVolume (Variable
27No. 1 cassette lift-up upper limit
detection
28PS front sensorDetects paper in front of PS.PPD2Photo sensor (Photo
29No. 1 cassette paper empty detectionDetects paper empty on the paper tray.PED1Photo sensor (Photo
30Dehumidifier heaterDehumidifier hater for the main body cassette. (Japan only)DH—
31Belt lift-up upper limit detectionDetects lift-up or lift-down of the transfer belt. BLUDPhoto sensor (Photo
32Belt waste toner full detectionDetects belt waste toner full.BTNFContact switch
33Color toner concentration (process
control) sensor/Auto image Reg.
34Lower heat roller thermistorDetects the temperature on the heat roller surface.THSDThermistor
35Lower heat roller thermostatDetects an abnormally high temperature and turns off the heater
36Machine paper exit sensor 1Detects discharged paper.POD1Photo sensor (Photo
37Upper heat roller thermistorDetects the temperature on the heat roller surface.THSUThermistor
38Upper heat roller thermostatDetects an abnormally high temperature and turns off the heater
39Power switchUsed to switch the nighttime mode/normal mode.
39Main switchTurns ON/OFF the main power.MSWSeesaw switch
40Front door open detectionDetects open/close of the front door.DSWFMicro switch
41Paper exit door open detectionDetects open/close of the paper exit door.DSWLMicro switch
42Face-up paper exit tray full detectionDetects full of the face-up paper exit tray.TFDPhoto sensor (Photo
43Machine paper exit sensor 2Detects discharged paper.POD2Photo sensor (Photo
45Document set sensorDetects presence of a document.
46Open/close sensorDetects open/close of the paper feed unit. COVERPhoto sensor (Photo
47Document width sensor (A4R, LTR, A5)Detects the document width on the tray.W1Photo sensor (Photo
48Document width sensor (B4, B5)Detects the document width on the tray. W2Photo sensor (Photo
49Document width sensor (WLTR, A5R,
A4, LT)
50Paper entry sensorDetects presence of a document. PAPERPhoto sensor (Photo
51Document length detection SW (Short)Detects the document length on the tray. L1Photo sensor (Photo
52Document length detection SW (Long)Detects the document length on the tray. L2Photo sensor (Photo
53Book sensorDetects floating of the RSPF. COVER OPEN Photo sensor (Photo
54Paper exit sensorDetects presence of a document. POPhoto sensor (Photo
NameFunction
Parts
Detects the upper limit position of paper.LUD1Photo sensor (Photo
Detects the toner patch density (color toner) in image density
correction operation. 2-sensors on PWB.
lamp.
lamp.
Detects the document width on the tray. W3Photo sensor (Photo
Code, signal
name
PCS_CPhoto sensor (Photo
HLTS2Thermostat
HLTS1Thermostat
Type
transmission)
transmission)
transmission)
transmission)
resistor)
transmission)
transmission)
transmission)
transmission)
transmission)
Thermal switch
transmission)
Thermal switch
MSWSeesaw switch
transmission)
transmission)
W0
Photo sensor (Photo
transmission)
transmission)
transmission)
transmission)
transmission)
transmission)
transmission)
transmission)
transmission)
transmission)
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 9
H. PWB 1
13
12
11
2
1
21
3
4
5
6
14
15
16
17
18
20
19
7
8
10
Front / right side / top view
9
No.
1CL inverter PWBDrives the xenon lamp.
2MFP PWBCorrects images from the CCD and controls the operation panel.
3Flash PWB (OP)Includes the program to drive the OP PWB.
4Flash PWB (SCN)Includes the program to drive the SCN PWB.
5Document detection LED PWBEmits light for document size detection.
6CCD PWBConverts document images into electric signals.
7Lift-up unit PWB trayDetects the cassette size and interfaces the cassette lift-up motor signals.
8Manual feed VR PWBOutputs manual feed width signals.
9Process control PWB (for black)Outputs the black toner density on the transfer belt.
10Process control PB (for color)Outputs the color toner density on the transfer belt.
11Document detection light receiving PWBOutputs the document size detection signal.
12Operation PWBOutputs the key operation signal.
13INV/LVDS PWBInterfaces LCD from the MFPPWB and the touch panel signal, and drives the LCD
14Network PWBNetwork connection PWB
15PRT controller PWBPrinter control PWB (HDD, NIC standard)
16Flash PWB (FONT)PWB which has font data
17Flash PWB (PCL)PWB which has the printer controller control program
18Flash PWB (BOOT)PWB which has the program to boot the printer controller
19Flash PWB (ICU)Includes the program to drive the ICU PWB.
20ICU PWBPerforms image process and controls LED.
21Interface PWBSignal interface
NameFunction
backlight.
Parts
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 10
H. PWB 2
22
23
29
28
27
25
No.
22PCU PWBControls the engine section.
23Driver PWBControls the DC load power and drive the motor.
24AC power PWBControls the power on the primary side.
25LED DL PWBsDischarges electric charges on the OPC drums.
26Flash PWB (PCU)Includes the program to drive the PCU PWB.
27High voltage TC PWBProduces the transfer voltage.
28DC power PWBOutputs the voltage on the secondary side, and controls the heater lamp.
29High voltage MC PWBProduces a high voltage for the main charger and the developing bias voltage.
NameFunction
Parts
25
25
24
25
26
Right side / top rear / view
Model
AR-C172M EXTERNAL VIEW AND INTERNAL STRUCTURE 6 - 11
[7] DESCRIPTIONS OF EACH SECTION
THSD
HLTS2
1. Fusing section
(2) Electrical and mechanical sections
Drawer connector (13+4pin)
1
3
5
4
21
HL1
HLTS1
THSD
Fusing unit
POD1
3
21
THSU
A4
A7
B3
B4
B5
A6
A2
HL1N
2
L2
1
3 HL2N
HL2
+24VL
FULHin
+5V
POD1
THSD
GND2
THSU
GND2
A. Operational descriptions
(1) Outline
This section performs the following function and operation.
1) Toner attached to paper in the transport section is fused onto
paper by heat and pressure of the heat roller.
A4
A1
B6B1
B4
B3
B2
A2
A6
2
1
3
FUSM
Fusing drive connection gear
FUSM_B\
Driver PWB
CN8(20pin)
FUSM_B
FUSM_A\
CN1(6pin)
81920
6
+24V
FUSM_A
CN2(34pin)
+24V
654321
DSWLin
DSWLout
7
+24V
9
+24V
1
+24V
3
FUSM_B\
5
FUSM_A\
7
FUSM_B
9
FUSM_A
11
DSWL
16
2
1
DSWL
+24V
+24V
FUSM_B\
FUSM_A\
FUSM_B
FUSM_A
DSWL
L2
3
CN3
L2 CN3-3
N2 CN3-1
FUCHin
2
+5V
6
POD1
8
THSD
10
GND2
1
THSU
GND2
3
1
3
5
7
CN12(34pin)
9
11
16
HL1N
HL2N
21
HL drive circuit
DC power PWB
CN2
765431
CN14(10pin)
PCU
1214
DC-CNT
CN7
8
10
6
4
HL2
MSWON
+24V
HLPR
HL1
HLTS2
21
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 1
(3) Major parts/signals functions and operations
53
6
6
4
1
2
1
4
1
1
5
120V 950W
120V 350W
2
1
2
6
4
6
3
1
2
6
4
No.NameCode, Signal nameFunction
1Heat roller
—
2Upper/lower separation pawls
3Heater lampUpper: HL1, Lower: HL2Heats the heat rollers.
4ThermistorUpper: THSU, Lower: THSDDetects the surface temperature of the heat roller. (Keeps the
5ThermostatUpper: HLTS1, Lower: HLTS2 Cuts conduction of the heater lamp when an abnormally high
6Paper exit sensorPOD1Detects paper discharged from the fusing section.
RW Control signalFUSM_A, A’, B, B’Drives the fusing section.
RW Control signalFUCHinFusing unit installation detecting signal
RW Control signalDSWLLeft cabinet open/close detection signal
RW Control signalHLPRHeater lamp power relay (in the DC power PWB) drive signal
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
—
3
Heats and presses toner to fuse it on paper. Silicon rubber rollers
are used as the upper and the lower heat rollers. Teflon tube is
wound around the upper heat roller.
Mechanically separate paper from the heat roller, which was not
separated naturally.
roller surface temperature at a constant level.)
temperature is detected.
5
(4) Operational descriptions
a. Fusing unit drive
To drive the fusing unit, drive power is transmitted from the drive
motor (FUSM) through the connection gear to the upper heat roller
gear.
The drive motor (stepping motor) is driven by the motor drive IC in
the driver PWB according to the control signal sent from the PCU.
Driver
PWB
b. Heater lamp drive
The surface temperature detected by the thermistor is sent to the
PCU. When the temperature is lower than the specified level, the
PCU sends the heater lamp lighting signal to the heater lamp drive
circuit in the DC power PWB.
The triac in the heater lamp drive circuit is turned on to apply AC
power to the heater lamp, which turns on to heat the heat rollers.
The thermostats are provided as a safety measure to prevent
against an abnormally high temperature of the heat rollers.
When the thermostat is opened, the power supply (AC neutral) to
the heater lamp is cut off.
c. Fusing operation
Color toner of YMCK on paper is heated and pressed by the heat
rollers to be fused on paper.
At that time, color toner of YMCK is mixed to reproduce nearly
actual colors of document images.
FUSMPCU
The upper and the lower heat rollers are provided to heat from
above and below. This is because it is necessary to heat four layers of toner from above and below and right and left to fuse it on
paper.
The upper and lower heat rollers are of silicon rubber. This is
because of the following reasons:
1) To provide a greater nip quantity and a higher heating capacity
for paper.
2) The soft, flexible rollers press multi-layer toner without deformation to fuse on paper.
3) An even pressure is applied to an uneven surface of multilayer toner.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 2
d. Fusing temperature control
The temperature sensor is provided at the center of the upper and
the lower heat rollers.
The temperature sensor at the center detects the heat roller temperature and controls the heater lamp to keep the fusing temperature at the specified level.
The fusing temperature is switched according to the machine condition and paper type selected.
(Example: 200V series)
Upper heat rollerLower heat roller
Ready state160°C145°C
Power save mode138°COFF
Print modeNormal paper
B/W
OHP sheet170°C155°C
Heavy paper 1 170°C135°C
Heavy paper 2 175°C145°C
Envelope180°C145°C
160°C145°C
B. Disassembly/Assembly/Maintenance
(1) Fusing section maintenance target parts
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean ▲
Unit NameNo.Part name
Fusing section1 Upper heat roller✕ ✕▲✕▲✕▲✕▲Replace at 100K or
9 Paper guides❍ ❍❍❍❍❍❍❍❍
10 Paper exit roller✕ ✕✕✕✕✕✕✕✕
11 Paper exit roller✕ ✕✕✕✕✕✕✕✕
12 Discharge brush✕ ✕✕✕✕✕✕✕✕
– Fusing unit✕▲✕▲✕▲✕▲Replace the unit at
When
calling
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
50K 100K 150K 200K 250K 300K 350K 400KRemark
within 2 years.
within 2 years.
100K or within 2 years.
12
8
4
1
1
5
5
6
6
5
11
10
11
4
11
8
3
3
11
4
4
4
2
2
6
6
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 3
4
9
9
4
4
(2) Maintenance parts replacement procedure
a. Fusing unit removal
1) Open the left cabinet.
2) Loosen the roller knob (A) and remove the fusing unit (B).
c. Lower thermistor
1) Remove the fusing unit from the machine.
2) Remove the screws, and remove the fusing front PG (A).
3) Remove the connector, the screw, and the harness, and
remove the thermistor (B).
B
A
B
A
b. Upper thermistor
1) Remove the fusing until from the machine.
2) Remove the screw and the harness cover (A).
3) Remove the connector, the screw, and the harness, and
remove the thermistor (B).
A
B
d. Upper heater lamp
1) Remove the fusing unit from the machine.
2) Remove the screw and remove the fusing front cover (A).
Remove the harness cover (B).
3) Remove the connector, the screw, and the lamp holder (C),
and remove the upper heater lamp (D).
B
C
D
A
e. Lower heater lamp
1) Remove the fusing unit from the machine.
2) Remove the screw, and remove the fusing front cover (A).
3) Remove the screw, and remove the fusing front PG (B).
4) Remove the connector, the screw, and the lamp holder (C),
and remove the lower heater lamp (D).
A
C
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 4
D
B
f. Upper heat roller, bearing, gear
1) Remove the fusing unit from the machine.
2) Remove the lever (A), and release the roller pressure.
3) Remove the screw.
A
4) Open the upper fusing section.
A
6) Remove the C-ring and the bearing, and remove the gear (A)
and the heat roller (B).
A
g. Lower heat roller, bearing
1) Remove the fusing unit from the machine.
2) Remove the screw, and open the upper fusing section.
3) Remove the lower heat roller unit (B).
4) Remove the C-ring and the bearing (A), and remove the heat
roller (B).
B
B
5) Remove the heat roller upper unit (B).
B
∗ When assembling, put the flanges of the upper bearings outside
of the frames F and R.
Frame RFrame F
AA
h. Paper guide
1) Remove the fusing unit from the machine.
2) Remove the screw, and remove the paper guide.
Note: Refer to the adjustment (ADJ13) when installing the paper
guide.
B
Frame RFrame F
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 5
i. Paper exit roller
1) Remove the fusing unit from the machine.
2) Open the upper fusing section.
3) Remove the E-ring (A), and shift the bearing (B).
4) Remove the paper exit roller unit (C).
C
A
C
B
5) Remove the E-ring, the gear, the pin, and the bearing.
j. Lower separation pawl
1) Remove the fusing unit from the machine.
2) Open the upper fusing section.
3) Remove the paper exit roller unit.
4) Lift the separation pawl and shift it to the right and lift it from
the heat roller.
7) Rotate the separation pawl in direction A and remove if from
the mounting plate. Remove the spring.
A
Note: When attaching the separation pawl, check that the separa-
tion pawl is in contact with the heat roller.
5) Remove the POD1 connector.
6) Remove the screw, and slide and remove the lower separation
pawl mounting plate.
B
A
C
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 6
2. Transfer section
(2) Electrical and mechanical sections
A. Operational descriptions
(1) Outline
This section functions and operates as follows:
1) A high, positive voltage is applied to the transfer roller to
charge the transfer belt and paper on it positively, attracting
negatively charged toner images on the OPC drum onto
paper.
Transfer belt unit
(20pin)(14pin)
BTNF
12
NC
13
CALS/
9
GND2
14
BSEN_LED
7
PCS_K
8
GND2
1
PCS_C
4
ASEN_LED
3
GND2
10
REGSEN
5
TS (CL)
6
BTM /B
16
BTM /A
17
BTM B
18
BTM A
19
+24V
15
GND (FLAME)
20
FG
PCSC
Color PC &
Auto reg
sensor
(2pin)
12
Process control
shutter
CALS
11
13
7
3
1
5
9
10
8
12
(5pin)
PCSK
Lift-up cam
(6pin)
BLUM B/
1
BLUM A/
2
BLUM B
3
BLUM A
4
+24V
5
+24V
6
+24V
CALS/
GND2
PCSC
B SEN LED
REG SEN
+5V
PCSK
A SEN LED
GND2
(4pin)
BLUM
BLUD
(5pin)
Drawer connector
(24pin)
BTNF
14
NC
CN9
2
(24pin)
CALS/
21
BELT CHim
12
A SEN LED
6
PCSK
4
GND2
13
PCSC
10
B SEN LED
8
GND2
11
REG SEN
22
+5V
24
BTM B/
9
BTM A/
7
BTM B
5
BTM A
3
+24V
1
BTM
HV REM
GND
FG
CN2 (10pin)
HV (MC) PWB
Drive gear
TC C
4567891012 3
TC M
TC Y
1
2
3
4
5
6
FG
TC K
CN1 (8pin)
BTM B/
BTM A/
BTM B
BTM A
+24V
+24V
+24V
(NC)
+24V
8
GND2
7
GND2
6
HV STB
5
HV DATA
4
HV CLK
3
HV REM
2
1
BTN F
1
GND2
2
DSNRoutDSWR
30 34
1
CN17
5
(28pin)
8
7
4
2
6
+24V
PCU PWB
CN6 (10pin)
3579810246
BTNF
THVY
THVM
THVC
THVK
HV (TC) PWB
+24V
1
(NC)
+5V
1
BLUD
2
GND2
3
4
5
CN1 (10pin)
FG
TCK
TCY
TCM
TCC
HVREM
GND
FG
2
3
4
5
6
7
8
9
10
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 7
(3) Major parts/signals functions and operations
5
3
3
9
9
1
10
1
67
82
2424244
1
8
5
9
9
3
3
10
1
3
9
9
3
1
11
1
4
6
8
5
5
10
10
2
4
2
4
2
7
8
No.NameCode, signal nameFunction
1Transfer belt—Transfers toner images on the OPC drum onto paper.
2Transfer roller—Applies a transfer voltage to the transfer belt.
3Belt cleaning blade—Cleans and removes toner from the transfer belt.
4Transfer discharge sheet—Discharges the transfer belt.
5Transfer belt cleaning roller—Removes paper dust from the transfer belt.
6Transfer belt drive roller—Drives the transfer belt.
7Transfer belt follower roller—Transfer drive follower roller
8Transfer belt cleaning brush—Cleans the back surface of the transfer belt.
9Process control sensorMonochrome: PCSK
Color: PCSC
10Transfer waste toner tank—Collects waste toner on the transfer belt.
11Transfer belt unit
RW Belt motorBTMDrives the transfer belt.
RW Calibration solenoidCALSDrives the shutter on the process control sensor.
RW Waste toner full detection switchBTNFDetects waste toner full in the waste toner box.
RW Belt lift-up motorBLUMLifts up the transfer belt unit.
RW Belt lift-up sensorBLUDDetects the position of the transfer belt unit.
RW Control signalTC (K, C, M, Y)Each color transfer high voltage control signal
RW Control signalTHV (K, C, M, Y)Each color transfer high voltage
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
Detects the toner patch density in image density correction.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 8
(4) Operational descriptions
a. Transfer belt drive
The transfer belt drive power is transmitted from the drive motor
(BTM) to the transfer drive roller.
The motor (stepping motor) is driven by the drive signal sent from
the PCU.
b. Applying a transfer high voltage to the transfer roller
According to the high voltage control signal from the PCU, the signal is converted into a transfer high voltage control signal with the
HV (MC) PWB, and sent to the HV (TC) PWB.
According to each color transfer high voltage control signal, a high
voltage is applied to each transfer roller from the transfer high voltage HV (TC) PWB through the connection spring to each transfer
roller.
e. Transfer belt unit up and down
In color print, the transfer belt is in contact with four OPC drums. In
black and white print, the transfer belt unit moves down so that
only the black OPC drum is in contact with the transfer belt.
This up-and-down movement of the transfer belt is performed by
the lift-up motor (BLUM), the lift-up cam, and the unit position sensor (BLUD).
When the left cabinet is opened for jam process, the rotating
mechanism of the lift-up unit separates all four OPC drums from
the transfer belt.
• Transfer belt position for color print
The four OPC drums are in contact with the transfer belt by rotation of the cam in the transfer lift-up unit.
YMC
• Transfer belt position for black print
Only the black OPC drum is in contact with the transfer belt by
rotation of the cam in the transfer lift-up unit.
K
c. Process control sensor control
The process control shutter is provided on the process control
sensor of monochrome (PCSK) and color (PCSC). When the shutter is open (in image density correction and automatic registration), the toner patch formed on the transfer belt is read by the
process control sensor, and its information is sent to the PCU.
When the shutter is closed, the calibration sheet is read to perform
calibration of the sensor itself.
The shutter operation is controlled by the calibration solenoid
(CALS).
d. Belt waste toner full detection
Toner scraped by the belt cleaning blade is transported to the
waste toner box by the belt waste toner transport shaft.
When the waste toner box is full, the rotation load of the waste
toner transport shaft increases to turn on the waste toner full
detection switch with the lever by the torque limiter function.
YMC
9mm
• Transfer belt position in jam process or replacement of the
transfer belt
When the left cabinet is opened, the transfer lift-up unit moves
down, and the transfer unit moves by 9mm accordingly.
YMC
K
K
Drive to paadle by blum
Waste toner full detection →
1000 copies → without 24g reset
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 9
B. Disassembly/assembly/maintenance
5
3
3
9
9
1
10
1
(1) Transfer section maintenance target parts
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean
Unit name No.Part name
Transfer
section
67
82
1Transfer belt✕▲✕▲✕▲✕▲Replace at 100K or
2Transfer roller✕▲✕▲✕▲✕▲
3Transfer belt cleaning
blade
4Transfer discharge sheet✕❍✕❍✕❍✕❍
5Transfer belt cleaning
10 Waste toner tank unit▲ ✕▲✕▲✕▲✕▲When waste toner full
11 Transfer belt unit✕▲✕▲✕▲✕▲Replace the unit at
2424244
1
When
calling
50K 100K 150K 200K 250K 300K 350K 400KRemark
▲
✕▲✕▲✕▲✕▲Replace at 100K or
✕▲✕▲✕▲✕▲
TX belt clean blade seals.
within 2 years.
within 2 years.
is detected.
100K or within 2 years.
8
5
9
9
3
3
10
1
3
9
9
3
1
11
1
4
2
6
8
4
2
4
2
5
10
10
5
7
8
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 10
(2) Maintenance parts replacement procedure
a. Transfer unit removal
1) Open the left cabinet, and remove the fusing unit. (Refer to the
section of the fusing unit.)
2) Hold section A of the transfer unit and pull it in the arrow direction so that you can hold both sides of the unit.
3) Hold both sides B and remove the transfer unit from the
machine.
B
A
Note: Be careful not to scratch the surface of the transfer belt.
c. Process control sensor
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the spring from the hook section.
4) Remove the hook, and remove the process control shutter.
BB
A
b. Belt drive motor
1) Remove the transfer unit from the machine.
2) Remove the screw, and remove the belt cover gear.
3) Remove the connector, the screw, and the motor.
A
Cleaning: Clean the calibration sheet. (Wipe with soft, dry
cloth.)
5) Remove the connector and the screws, and remove the process control sensor.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 11
Cleaning: Clean the sensor surface.
d. PWB
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the spring from the hook section.
4) Remove the process control shutter.
5) Remove the connector (A).
6) Remove the connector (B) and the screw, and remove the
PWB.
Note for assembly:
Insert the notches A and B of the waste toner tank unit into the
positions in the transfer frame indicated in the figure below.
A
B
f. Transfer belt
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the lower screw.
Front
A
B
e. Waste toner tank unit
1) Remove the transfer unit from the machine.
2) Remove the connectors and the screws, and remove the belt
drive unit.
3) Remove the waste toner tank unit.
Rear
Note: If the upper screw is removed and folded, the electrode is
deformed. Therefore, be sure to remove the lower screw.
4) Fold the transfer belt housing and remove the transfer belt.
Lot number marking
Note for installation:
When installing the transfer belt, be sure to place the lot number
section marked inside the transfer belt on the front side.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 12
g. Transfer roller
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the transfer belt.
4) Disengage the pawl, and remove the bearing and the transfer
roller.
Conductive
i. Transfer follower roller
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the transfer belt.
4) Remove the E-ring and the bearing, and remove the transfer
follower roller.
Front
Note for assembly:
There are two different transfer roller bearings: black and white.
The black bearing is conductive, and must be attached to the electrode side (rear frame side).
h. Transfer drive roller
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the transfer belt.
4) Remove the E-ring and the bearing, and remove the transfer
drive roller.
Rear
j. Transfer cleaning blade
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the waste toner tank unit.
4) Remove the screw, and remove the transfer cleaning blade.
k. Transfer belt cleaning roller
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the waste toner tank unit.
4) Press the cleaning lever in the arrow direction A, extend the
pawl in the arrow direction B, and pull up the cleaning lever in
the arrow direction C.
5) Remove the transfer belt cleaning roller.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 13
l. Belt cleaning brush
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the transfer belt.
4) Remove the Belt cleaning brush.
m. Transfer discharge sheets.
1) Remove the transfer unit from the machine.
2) Remove the connector and the screw, and remove the belt
drive unit.
3) Remove the transfer belt.
4) Remove the terminals.
n. Transfer lift-up unit
1) Remove the screw, and remove the left cabinet of the
machine.
2) Remove the connector.
3) Adjust the rail positions so that section A does not make contact with the acuride section when the transfer lift-up unit is
lifted up.
5) Remove the transfer discharge sheets.
A
4) Lift the transfer lift-up unit in the arrow direction B with section
A as the fulcrum, and remove it.
A
B
A
A
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 14
3. Process (image forming) section
LED
Y
M
C
K
A. Operational descriptions
(1) Outline
This section functions and operates as follows:
1) In this section, the LED is lighted according to the data sent
from the image process section to form electrostatic latent
images on the OPC drums which are charged evenly by the
main charger, and toner is attached to the electrostatic latent
images.
1OPC drum (YMCK)—Forms electrostatic latent images.
2Main charger (YMCK)MCCharges the OPC drum surface negatively.
3Discharge lens—Discharges the OPC drum surface.
4Cleaning blade—Cleans the OPC drum surface to remove residual toner.
5Toner reception seal—Seals to prevent against toner leakage.
6Waste toner transport screw—Transports toner scraped by the cleaning blade to the waste toner box of the
7MC cleaner—Cleans the MC (charging plate).
8LED unit—Converts image signals into LED light and radiates it onto the OPC drum.
9Developing roller—Attaches toner to the OPC drum. (Do not touch the developing roller.)
10DV CRUM (Y, M, C, K)—Memory for toner cartridge data (counter, etc.)
11Waste toner box—Collects waste toner transported from the drum cartridge.
RW Grid biksGBControls the drum surface potential.
RW Discharge lampDLRadiates lights onto the discharge lens.
RW Drum motor A, A’, B, B’DM A, A’, B, B’Drives the OPC drum.
RW Toner empty sensorTESDetects the toner quantity in the toner cartridge.
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
toner cartridge.
(4) Operational descriptions
a. Drum cartridge and toner cartridge drive
The drive power for the drum cartridges are transmitted from the
drive motor (DM) to the drum gears.
The toner cartridge is driven through the drum gear and the connection gear.
The motor (stepping motor) for black is driven by the drive signal
sent directly from the PCU, and the motors color are driven by the
drive signals sent from the PCU through the driver PWB.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 16
b. LED (writing) unit
Four LED (writing) units are provided for each of Yellow, Magenta,
Cyan, and Black.
Each LED (writing) unit converts YMCK dot image data outputted
from the ICU PWB into LED light, and radiate the light onto the
OPC drum, forming electrostatic latent images on the OPC drum.
Since the position of each LED unit of CMYK is shifted in the
paper transport direction, the above operation depends on the relative position and differs in the operating timing.
• LED unit composition
ItemContent
Print width314mm
Total number of dots7424 dot
Resolution600dpi
LED
composition
Number of LED chips58 chip
Number of dots128 dot
LensSelfoc lens
c. OPC drum section operations
The OPC drum surface is charged negatively by the main charger,
and LED light of images are radiated onto the OPC drum surface
by the LED (writing) unit to form electrostatic latent images.
1) The OPC drum surface is negatively charged by the main
charger.
Main corona unit
High voltage unit
Screen grid
CTL
CGL
3) Clean and remove residual toner from the OPC drum with the
cleaning blade after transfer operations.
OPC drum
Aluminum
layer
OPC drum
The screen grid is attached to the main charger unit. The OPC
drum is charged at a voltage nearly same as the voltage
applied to the screen grid.
2) LED light is radiated onto the OPC drum surface by the LED
(writing) unit to form electrostatic latent images.
LED light
OPC drum
OPC drum
CTL
CGL
Aluminum
layer
When LED light is radiated onto the OPC drum CGL, positive
and negative charges are generated. Positive charges generated in the CGL are attracted and moved by negative charges
of the OPC drum, and negative charges by positive charges of
the aluminum layer of the OPC drum. Therefore, on the OPC
drum surface and in the aluminum layer, positive and negative
charges are neutralized, reducing the OPC drum surface
potential.
Electric charges remain in the areas where LED light is not
radiated onto the OPC drum.
As a result, electrostatic latent images are formed on the OPC
drum surface.
Charges are disposed in direct proportion to the amount of
light received.
Removed residual toner is transported to the waste toner section of the toner cartridge by the waste toner transport screw.
4) The whole surface of the OPC drum is discharged.
Lens
CTL
CGL
Aluminum
layer
CTL
CGL
Aluminum
layer
By radiating discharge lamp light onto the discharge lens, light
is radiated through the discharge lens to the OPC drum surface.
When discharge lamp light is radiated onto the OPC drum
CGL, positive and negative charges are generated.
Positive charges generated in the CGL are attracted and
moved by negative charges of the OPC drum, and negative
charges by positive charges of the aluminum layer of the OPC
drum. Therefore, on the OPC drum surface and in the aluminum layer, positive and negative charges are neutralized,
reducing the OPC drum surface potential, preparing the drum
surface for the new copy cycle.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 17
d. Developing section (composed of four units of YMCK)
operations
Electrostatic latent images generated on the OPC drum by the
LED (writing) units are converted into visible images by toner.
<1> Remaining toner quantity detection
Rotation of the detection lever connected to the mixing roller is
sensed by the sensor (TES) to detect the remaining toner
quantity.
OPC drum
CTL
CGL
Aluminum
layer
Toner in the developing unit is agitated by the mixing roller.
By mixing operation, toner is negatively charged due to mechani-
cal friction.
The developing bias voltage (negative) is applied to the develop-
ing roller.
The diflerence for the voltage potential between the toner and DV
roller surface attracts the toner to the DV roller.
In the areas of the OPC drum, when the charge was detected, the
voltage potential difference is greater than the DV roller. Therefore
the toner is attracted from the DV roller to the drum.
In the unexposed areas of the drum, the potential on the DV roller
created by the bias voltage and therefore the toner to not attracted
to those areas of the drum.
Negatively charged toner is attracted and attached to the exposed
area on the OPC drum surface where the negative potential was
reduced by LED exposure.
On the other hand, in the areas on the OPC drum where exposure
was not made, the positive potential is higher than the developing
bias voltage, repelling toner.
Drive
Own weight
Drive
Own weight
<2> Waste toner collection
Waste toner collected by the drum cleaning blade is transported to the waste toner box of the toner cartridge by the
toner transport spring in the drum unit.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 18
OPC drum
B. Disassembly/assembly/maintenance
(1) Process section maintenance target parts
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean
Unit nameNo.Part name
Drum peripheral
section
Developing section
(integrated with
toner cartridge)
LED7LED lens❍ ❍❍❍❍❍❍❍❍
Note: When replacing the OPC drum, execute SIM 25-1 for 2 minutes. (This simulation is executed in order to avoid generation of stripes on
a half-tone print image.)
1Drum (B/W, Color)▲▲ ▲▲▲▲▲▲
2Charging unit▲▲▲▲▲▲▲▲
3Cleaner blade▲▲▲▲▲▲▲▲
4Toner reception seal▲▲▲▲▲▲▲▲
5Drum cartridge▲▲▲▲▲▲▲▲When replacing the unit
6Toner cartridgeReplaced by user when toner empty
When
calling
▲
50K 100K 150K 200K 250K 300K 350K 400KRemark
(or at the specified distance covered)
3
2
1
5
4
2
3
1
4
6
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 19
7
(2) Maintenance parts/major parts replacement
a. Developing unit removal
1) Open the front cabinet.
2) Lift the lever in the arrow direction A, and remove the developing unit in the arrow direction B.
c. Drum removal
1) Remove the drum unit.
2) Remove the retaining clip from the drum shaft (A).
3) Slide the drum shaft in the arrow direction B.
4) Remove the drum in the arrow direction C.
ARC260(13_3_A03)
A
C
d. Charging unit
1) Remove the drum unit.
2) Remove the screw and remove the cover (A).
3) Remove the MC unit from the MC cleaning shaft.
4) Remove the charging unit (C).
B
B
A
b. Drum unit removal
1) Open the front cabinet and left cabinet.
2) Turn the fixing screw in the arrow direction A to release it, and
remove the drum unit in the arrow direction B.
B
C
B
A
∗ When assembling, attach the drum, then attach the charging
unit. (This is to prevent against dirt by starting powder applied to
the drum.)
e. Cleaner blade
1) Remove the drum unit.
2) Remove the charging unit.
3) Remove (A).
4) Remove the screw, and remove the cleaner blade.
A
B
A
Note: Be sure to open the left cabinet before releasing the fixing
screw.
If the fixing screw is released before opening the left cabinet, the lock cannot be released.
In that case, push the drum unit to the rear frame side and
release the lock, and remove the drum unit.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 20
f. Toner reception seal
1) Remove the drum unit.
2) Remove the drum.
3) Remove the screw, and remove the toner reception seal.
h. LED unit removal
1) Remove the rear cabinet.
2) Remove the PCU PWB unit.
3) Remove the developing unit.
4) Remove the drum unit.
5) Remove the top cover, and disconnect the connector of the
ICU.
Y
M
C
K
Note: Do not deform the seal.
g. MC cleaner
1) Remove the drum unit.
2) Remove the screw, and remove cover (A).
3) Remove the MC unit.
4) Release the pawl, and remove the MC case upper in the arrow
direction.
5) Release the pawl, and remove the MC case lower in the arrow
direction.
6) Remove the screen grid.
6) Remove the screw (A) on the rear side, and remove the LED
unit.
AAAA
7) Remove the LED unit.
8) Remove the connector cover and the harness.
7) Disengage the pawl, and remove the MC cleaner.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 21
i. LED lens cleaning
4. Optical section (Scanner section)
(2) Electrical section and mechanical section
A. Operational descriptions
(1) Outline
This section functions and operates as follows:
1) The copy lamp radiates light onto the document, and the
reflected light is scanned by the three line (RGB) CCD element and then converted into image signals (analog).
2) The image signals (analog) are converted into 8bit digital signals by the A/D converter.
3) The image signals (digital) are sent to the image process section (ICU PWB).
MHPS
MHPS
GND2
123
CL
25
1
3
4
CCD PWB
Scanner motor
CCD lens unit
+5V
+24V
+24V
LAMP
GND
GND
Inverter PWB
Copy lamp unit
12534
GND
GND
CN8 (5pin)
LAMP
+24V
+24V
15 16 14
MHPS
GND
CN11 (16pin)
30 2926 2528 27
GND2
REVEN
CN13 (30pin)
GND2
+5V
RODD
GND2
24 23
GEVEN
GND2
2219 1821 2017 16 1512 1114 13
GODD
GND2
BODD
GND2
BEVEN
GND2
+5V
+12V
+12V
MFP PWB
98107 6 5
4321
GND2
GND2
+5V
GND2
GND2
CCD_RS
CCD_CP
GND2
CCD_SH
GND2
CCD_CLK2
GND2
CCD_CLK1
GND2
1234
SM A
SM A/
CN14 (4pin)
CN12 (24pin)
CN10 (14pin)
SM B
CN16 (28pin)CN16 (28pin)
SM B/
ICU PWBPCU PWB
CN13 (24pin)
CN10 (14pin)
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 22
(3) Major parts and signals functions and operations
5
4
7
1
2
3
11
9
8
10
No.NameCode, Signal nameFunction
1Scanner motorSMDrives the copy lamp unit and the mirror base unit.
2Pulley belt—Transmits drive power of the scanner motor to the pulley.
3Pulley—Drives the scanner drive wire.
4Scanner drive wire—Transmits drive power of the scanner motor to the copy lamp unit
and the mirror base unit.
5Scanner unit home position sensorMHPSDetects the home position of the copy lamp unit.
7Copy lampCLRadiates light onto documents. (Xenon lamp)
8Reflector—Converges light from the copy lamp.
9No. 2 mirror—Sends document images to No. 3 mirror.
10No. 3 mirror—Sends document images to the lens.
11Lens—Reduces document images (photo images) and projects them to the
CCD.
12CCD PWB—Receives the document image (photo signals) and converts them
into electrical signals.
RW Inverter PWBLAMPDrives the copy lamp (Xenon lamp).
RW Scanner motor driveSM A, A’, R, B’
RW MHPSMHPSScanner home position detect jam
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
12
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 23
(4) Operational descriptions
a. Optical section drive
The optical section drive power is transmitted from the drive motor
(SM) through the belt, the drive pulley, and the wire to drive the
copy lamp unit and the mirror base which are attached by the drive
wires.
The drive motor (stepping motor) is controlled by the drive signal
sent from the MFP PWB.
b. Copy lamp drive
The copy lamp is driven by the copy lamp drive voltage generated
in the inverter PWB according to the control signal sent from the
MFP PWB.
c. Image scan/color separation
The CCD element, appeared as one unit, but has three separate
rows of CCD elements drive each for (RGB).
Light is radiated to a document by the copy lamp (Xenon lamp),
and the brightness of the reflected light is received by the three
line (RGB) CCD element and converted into (analog) image signals.
Each color component of RGB is separately extracted from the
document image by the three lines (RGB) of the CCD elements.
The red CCD extracts the red components from the document
image, the green CCD the green components, and the blue CCD
the blue components. This operation is called Color Separation.
The CCD element, appeared as one unit, but has three separate
rows of CCD elements drive each for (RGB).
Scanning of a document in the main scanning direction is performed by the CCD elements. Scanning of a document in the sub
scanning direction is performed by shifting the scanner unit position with the scanner motor.
Document images are optically reduced by the lens and projected
to the CCD elements.
The scanning resolution is 600dpi × 600dpi.
(Image data for one line)
RGB
Red component of
image data
d. Image signal A/D conversion
1) Each image signal (analog) of RGB is converted into 8bit digital signal by the A/D converter. Each color pixel has 8bit information (256 gradations).
2) Each 8bit digital image signal of RGB is sent to the image process section.
Green component of
image data
Blue component of
image data
CCD PWB
Color
3-line
CCD
R analog IC
G analog IC
B analog IC
R A/DC
G A/DC
B A/DC
R
CCD ASIC
G
B
R
G
B
ICU PWB
e. Zooming operation
Zooming in the sub scanning direction is performed by changing
the scanning speed in the sub scanning direction.
Zooming in the main scanning direction is not performed optically
but by the image process technology (software).
R
G
B
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 24
B. Disassembly/assembly/maintenance
(1) Transfer section maintenance target parts
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean
(3) Major parts and signals functions and operations
a. Manual paper feed unit
9
8
87
10
10
1
72
No.NameCode, Signal nameFunction
RW Paper detectorMPEDDetects paper empty/presence in the paper tray.
1Paper size (width) adjuster—Adjusts the paper position.
2Paper size (width) sensorMPWSDetects the paper width.
3Paper size (length) detectorMPLD1Detects the paper length.
4Paper size (length) detector 2MPLD2Detects the paper length.
5Tray position detectorMTOP1Detects the paper tray position.
6Tray position detectorMTOP2Detects the paper tray position.
7Paper pickup roller—Sends paper to the paper feed roller.
8Manual paper feed roller—Feeds paper to the paper transport section.
9Manual paper feed clutchMPFCTransmits the paper feed drive motor power to the manual paper feed roller.
10Separation roller—Separates paper and transmits it to the paper feed unit.
RW Manual transport clutch—Transmits the paper feed motor power to the manual paper feed unit.
RW Paper feed motor—Drives the paper feed section and the manual paper feed unit.
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
1
6
4
5
3
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 29
b. Paper tray lift unit
3
4
2
5
1
No.NameCode, Signal nameFunction
1Paper tray lift unit—Drives the paper tray lift plate.
2Paper size detection actuator—Transmits the status data of the paper size block to the paper size detector.
3Paper tray lift unit control PWB—Controls the paper tray lift unit.
4Lift motorLUMxDrives the lift plate.
5Paper size detector (switch)CxSSxDetects the paper size set by the paper size set block.
c. Paper feed unit
1
2B
5
3
2A
4
6
No.NameCode, Signal nameFunction
1Paper tray paper feed unit—Feeds paper from the paper tray to the transport section.
2APaper empty detectorPEDxDetects paper empty in the paper tray.
2BPaper upper limit detectorLUDxDetects the paper upper limit position. (Keeps the friction between the
3Paper pickup roller—Feeds paper to the paper feed roller.
4Paper feed clutchCPFCxControls ON/OFF of the paper feed roller.
5Paper feed roller—Feeds paper to the paper transport section.
6Separation roller—Separates paper to prevent against double feed.
paper pickup roller and paper at a constant level.)
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 30
d. Paper exit section
1
4
4
No.NameCode, Signal nameFunction
1Paper exit sensorPOD2Detects discharged paper.
2Offset motorOSMDrives the paper exit offset.
3Shifter home position sensorHPOSDetects the offset home position.
4Paper exit switch gate solenoidGSSDrives the face-up/down switch gate.
3
2
(4) Operational descriptions
a. Paper feed tray section operation
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section.
The separation roller prevents against double feed.
Up and down movement of the pickup roller is driven by the pickup
solenoid, and ON/OFF control of the pickup roller and the paper
feed roller is performed by the paper feed clutch.
Pickup roller
Paper feed motor
Paper feed roller
Separation roller
The paper lift plate lifts paper to control the upper limit position of
paper so that the pressure between the top paper and the pickups
roller remains constant. Lifting is performed by the lift motor and
the lift gear.
Paper feed clutch
The lift position is detected by the paper upper limit detector to
control the pressure between the top paper and the pickup roller.
Lift motor
Paper feed
rollers
Separation
rollers
Lift plate
Paper size detector
Pickup
roller
Upper limit detectors
Lift motor
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 31
The paper feed tray is provided with the paper size detection
block, and the status of this block is detected with the combination
of ON/OFF of the four paper size detectors to recognize the paper
size.
Relationship between the paper size detector and the paper size
Paper size detector
CSS4 CSS3 CSS2 CSS1Japan
ONOFFOFFONA3A311 x 17
OFFOFFONONB4B48.5 x 14
ONOFFONOFFA4RA4R11 x 8.5R
OFFONONOFFA4A411 x 8.5
OFFONONONB5RB5INVOICE
OFFONOFFONB5A5FOOLSCAP
ONONONOFFA511 x 8.5A4
ONONOFFOFFEXTRA EXTRAEXTRA
Patterns other than aboveRecognized that the paper tray
EXTRA: Operates with the paper size set by the user program.
The lift position sensor detects the lift plate lower limit position.
Then lift-up operation is started, and the rotation of the lift motor
up to detection of the upper limit by the paper upper limit detector
is used to calculate the paper remaining quantity.
b. Manual paper feed section operation
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section.
The separation roller prevents against double feed.
The manual paper feed clutch controls ON/OFF of the pickup
roller and the paper feed roller.
The manual transport roller transports paper to the resist roller.
Paper size
Destination
AB
series
is not inserted.
Inch series
The paper size is detected by the paper length detector and the
paper width sensor.
A volume-type sensor is used as the paper width sensor. The
resistance varies according to variation of the paper guide position
to detect the paper width.
The tray position detector detects that the paper tray is set to the
maximum length position or to the minimum length position.
When the paper tray is set to the maximum length position, the
paper length detector is forcibly turned ON. This is to recognize it.
Paper feed roller
Transport roller
Separation roller
Paper stopper
Paper feed roller
Transport roller
Pickup roller
Separation roller
Paper feed motor
Pickup roller
Clutch
c. Paper transport section
This section transports paper from each paper feed section to the
transfer section (resist roller) by two transport rollers.
The paper transport clutch controls ON/OFF of each transport
roller.
Paper feed motor
Paper transport roller
Paper feed clutch
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 32
Paper transport roller
d. Paper resist section
The resist roller controls the relative position of the transported
paper and the transfer image.
The resist roller is driven by the resist roller motor.
The relative position of paper and the transfer image is determined
by the ON timing of the resist roller motor.
PS motor
Upper resist roller
Lower resist roller
B. Disassembly/assembly/maintenance
(1) Paper feed/transport sections maintenance target parts
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean ▲
Unit name No.Part name
Paper feed
section
1Cassette section
paper feed rollers
2Torque limiter
3Manual feed section
When
calling
50K 100K 150K 200K 250K 300K 350K 400KRemark
❍ ❍✕❍✕❍✕❍✕
✕✕✕✕ ✕
❍ ✕✕✕✕✕✕✕✕
paper feed rollers
Transport
section
4Torque limiter
5Transport rollers
6Transport paper guide
✕ ✕✕✕✕✕✕✕✕
❍ ❍❍❍❍❍❍❍❍
❍ ❍❍❍❍❍❍❍❍
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
e. Others
∗ The paper transport section is provided with two paper detec-
tors, which perform the following functions:
1) Paper jam detection
2) Output of the reference signal for the operating timing of each
load
Replace according to the
counter of each paper
feed port or within 2 years.
Replace according to the
counter of each paper
feed port or within 2 years.
4
2
1
1
4
3
3
2
1
4
3
5
5
5
6
6
5
3
6
6
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 33
(2) Maintenance parts and major parts replacement
a. Cassette paper feed
<1> Pickup roller
1) Remove the cassette.
2) Disengage the pawl, and remove the pickup roller.
<3> Paper separation roller, torque limiter
1) Remove the cassette.
2) Disengage the pawl, and remove the paper separation roller.
<4> Cassette paper feed unit
1) Open the front cabinet, and remove the drum unit.
Note: Do not remove the transfer belt unit.
<2> Paper feed roller, torque limiter
1) Remove the cassette.
2) Disengage the pawl, and remove the paper feed roller.
2) Remove the developing unit.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 34
3) Remove the front cabinet and the front frame cover.
4) Remove the multi manual paper feed unit.
5) Remove the connection right cabinet, the rear cabinet, and the
rear right cabinet.
6) Remove the screw and the paper feed unit. Remove the connector.
∗ When assembling, fit the positioning pin A with section C.
C
b. Multi manual paper feed
<1> Pickup roller
1) Open the arm cover (A). Disengage the pawl, and remove the
pickup roller (B).
B
A
A
<5> Paper feed drive motor
1) Remove the screw, the rear cabinet, the rear right cabinet, and
the connection right cabinet B.
2) Remove the screw, and remove the paper feed drive motor.
<6> Paper feed drive unit
1) Remove the harness and the screw, and remove the paper
feed drive unit.
<2> Paper feed roller
1) Open the arm cover (A), open the auxiliary PG (B), and
remove the paper feed roller (C).
A
C
B
<3> Paper separation roller
1) Open the vertical transport guide.
2) Open the maintenance cover (A) from the bottom of the multi
paper feed unit. Disengage the pawl and remove the paper
feed separation roller (B).
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 35
B
A
<4> Multi manual paper feed unit
1) Remove the screw and the harness, and remove the multi
paper feed unit.
2) Remove the screw, and remove (A) and (B).
∗ When assembling, first attach (A), then attach (C) and (D).
B
A
C
D
<5> Paper feed clutch
1) Remove the screw and the cover (A). Remove the connector
and the E-ring, and remove the paper feed clutch (B).
B
A
<6> Transport roller
1) Remove the bottom lid (A), remove the connector and the
screw, and remove the cover (B).
D
C
3) Remove the screw and the E-ring, and remove the angle (A)
and the gear.
E
A
4) Remove the screw, and remove (A) and the manual upper unit
(B).
B
B
A
∗ When assembling, fit the cover projection with the spring.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 36
A
5) Remove the E-ring, the gear, and the bearing, and remove the
transport roller.
c. Transport section
<1> Vertical transport unit
1) Remove the drum and the developing unit.
2) Remove the front cabinet.
3) Remove the front frame cover.
4) Remove the multi manual paper feed unit.
5) Remove the rear cabinet, the connection right cabinet, the
rear right cabinet, the front right cabinet, and the right lower
cabinet.
6) Open the vertical transport guide. Remove the screw and
remove the vertical transport guide unit.
8) Remove the paper feed drive motor, and remove the connector on the rear side. Remove the screw, and shift the vertical
transport unit to the left to remove.
∗ When assembling, engage the four bosses indicated with
in the figure below.
<2> Transport roller 2
1) Remove the vertical transport unit.
2) Remove the screw, and remove the paper guide (A).
3) Remove the resin ring, and remove the pulley (B) from the
belt.
4) Remove the resin E-ring, slide the bearing (C), and remove
the transport roller 2 unit (D).
C
D
7) Remove the screw, and remove the vertical transport lower
unit.
A
B
5) Remove the E-ring and parts, and remove the transport rollers.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 37
<3> Transport roller 1
1) Remove the vertical transport unit.
2) Remove the resin ring. Remove the pulley (A) from the belt.
3) Remove the resin E-ring, slide the bearing (B), and remove
the transport roller 1 (C).
<5> Upper resist roller
1) Remove the vertical transport unit.
2) Remove the PS unit.
3) Remove the spring (A), and remove the upper resist roller (B).
B
B
C
A
<4> PS unit
1) Remove the vertical transport unit.
2) Remove the screw and the spring. Release the lock. Remove
the belt and remove the PS unit.
∗ When assembling, attach from the left with avoiding the
plate in section A.
A
A
A
<6> Lower resist roller
1) Remove the vertical transport unit.
2) Remove the PS unit.
3) Remove the upper resist roller.
4) Remove the parts and remove the lower resist roller.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 38
<7> PS motor
1) Remove the rear cabinet, the connection right cabinet, and the
rear right cabinet.
2) Remove the connector and the screw, and remove the process exhaust fan unit. Remove the connector and the screw,
and remove the PS motor.
d. Paper exit section
<1> Slide drive motor
1) Open the left cabinet.
2) Remove the FD connection cabinet.
3) Remove the connector and the screw, and remove the motor
unit.
<2> FD paper exit unit
1) Remove the rear cabinet, the rear cabinet upper, the left cabinet, the rear left cabinet lid, the rear left cabinet, and the front
cabinet upper.
2) Remove the motor unit.
3) Slide section (A) to the front side. Remove the screw, and disengage the pawl in section (B). Remove the FD paper exit unit
(C) from the rear side and remove the connector.
∗ When assembling, attach from the front side.
∗ When assembling, be careful not to damage the actuator
(D).
B
A
D
A
4) Remove the connector and the screw, and remove the motor
(A).
C
<3> FD paper exit roller B
1) Remove the cabinet.
2) Remove the paper exit unit.
3) Remove the E-ring, the bearing, and the gear. Remove the FD
paper exit roller B.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 39
<4> FD paper exit roller A
1) Remove the cabinet.
2) Remove the paper exit unit.
3) Remove the E-ring, (A), the screw, (B), (C), and the bearing.
Remove the unit (D).
D
e. Gate solenoid unit
1) Open the left door, and remove the rear cabinet and the rear
left cabinet.
2) Remove the driver PWB unit.
3) Remove the connector and the screw, and remove the gate
solenoid unit.
C
B
A
4) Remove the E-ring and the bearing, and remove the FD paper
exit roller A.
f. Lift-up unit
1) Remove the rear cabinet and the rear right cabinet.
2) Remove the power PWB unit.
3) Remove the connector and the screw, and remove the lift-up
unit.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 40
6. RSPF section
A. Operational descriptions
(1) Electrical section and mechanical section
(7pin)(7pin)
W0
1
5V
2
W1
3
W2
4
W3
5
SPFCOVER
6
SGND
7
(6pin)
(6pin)
5V
1
6
L1
2
5
SGND
3
4
5V
4
3
L2
5
2
SGND
6
1
P0
L2
W0
5V
W1
W2
W3
SPFCOVER
SGND
(3pin)
3
2
1
1
2
3
4
5
6
7
L1
(7pin)
Sensor
PWB
(3pin)
3
2
1
Paper feed unit
(3pin)
SGND
1
SPFOPEN
2
5V
3
COVER
OPEN
5V
L1
SGND
5V
L2
SGND
/PSOL
24V1
PSOL
(3pin)
SGND
1
/SPFOUT
2
5V
3
(2pin)
W0
1
5V
2
W1
3
W2
4
W3
5
SPFCOVER
6
SGND
7
/PSOL
24V1
5V
L1
SGND
5V
L2
SGND
SGND
pull up
PAPER
/RSOL
24V1
SGND
/SPFOUT
5V
(2pin)
/PSOL
2
1
24V1
1
2
SGND
SPFOPEN
5V
/RSOL
24V1
PAPER
5
1
7
9
3
20
14
6
11
2
15
16
4
13
17
18
8
19
10
12
1
2
3
1
2
3
(2pin)(2pin)
1
2
RSOL
CN6
(20pin)
Interface PWB
CN2
(3pin)
CN1
(3pin)
/RSOL
1
24V1
2
MOT
CLH
Drive unit
(2pin)
SGND
2
pull up
1
PAPER
3
CN7
(3pin)
CN4
(2pin)
CN3
(7pin)
(3pin)
24V1
1
N.C.
2
/CLH
3
24V1
1
/GSOL
2
A
1
/A
2
/B
3
B
4
N.C.
5
24V1
6
24V1
7
(7pin)
A
1
/A
2
/B
3
B
4
N.C.
5
24V1
6
24V1
7
GSOL
(2pin)
/PSOL
2
24V1
1
24V1
1
N.C.
2
/CLH
3
Transport unit
(4) Operational descriptions
a. Major parts of the paper feed section
123,4 5 67 8
12
NO.Part nameOperations, etc.
1 Document length
sensor (L2)
2 Document length
sensor (L1)
3 Document set sensor
(W0)
4 Document width sensor
(W1, W2, W3)
5 Pickup rollerPicks up a document.
6 Paper feed rollerFeeds and transports a document.
Detects the document length of
the tray.
Detects the document length of
the tray.
Detects presence of a document.
Detects the document width.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 41
NO.Part nameOperations, etc.
7 Paper entry sensor
Detects transport of a document.
(PAPER)
8 PS rollerSynchronizes the document lead
edge and the image lead edge.
9 PS follower rollerSynchronizes the document lead
edge and the image lead edge.
10 Transport rollerTransports a document.
11 Transport follower roller Transports a document.
910111314151617
12 Paper exit sensor (P0)Detects transport of a document.
13 Paper exit follower roller Discharges a document.
14 Paper exit rollerDischarges a document.
15 Reverse gateOpens/closes the document
reverse path.
16 Paper exit gateSwitches the discharged paper
path to the intermediate tray or to
the paper exit tray.
17 Intermediate trayDischarges paper to the
intermediate tray in document
reverse operation.
b. Operation process
[Duplex document]
1)Document set (Document set sensor ON)
↓
2)Document size detection (Detects the document width with
the document width sensors W1, W2, and W3 and the
document length with the document length sensors L1 and
L2.)
↓
3)Complex unit copy key ON
↓
4)RSPF motor ON
↓
5)Pickup solenoid ON
↓
6)Pickup roller and paper feed roller rotation
↓
7)The paper entry sensor detects presence of a document.
↓
8)PS roller rotation
↓
9)Copy operation (Document surface)
↓
10) Transport roller rotation
↓
11) Paper exit roller rotation
↓
12) The paper exit gate moves down. (The document is passed
to the intermediate tray.)
↓
13) The reverse gate moves down.
↓
14) Paper exit roller reverse rotation (The document is passed to
the reverse path.)
↓
15) The paper entry sensor detects presence of a document.
↓
16) PS roller rotation
↓
17) Copy operation (Document back surface copy)
↓
18) Transport roller rotation
↓
19) Paper exit roller rotation
↓
20) The paper exit gate moves down. (The document is passed
to the intermediate tray.)
↓
21) The reverse gate moves down.
↓
22) Paper exit roller reverse rotation (The document is passed to
the reverse path.)
↓
23) The paper entry sensor detects presence of a document.
↓
24) PS roller rotation
↓
25) Paper exit roller rotation
↓
26) The paper exit gate moves up.
↓
27) The document is passed to the paper exit tray.
↓
28) Next document → (YES) → Returns to 4).
↓ (NO)
29) RSPF motor OFF
c. Document size detection
<1> The document size is detected on the document set tray.
When a document is set on the document set tray with the
paper/copy magnification ratio set in the auto mode, the document size is detected to operate the automatic selection
function of paper and copy magnification ratio for the document size. When different sizes of documents are set in this
detection method, the max. size of document is detected.
The document width is detected with the document width
sensors (W1, W2, and W3), and the document length is
detected with the document length sensors (L1 and L2) to
determine the document size. Judgment of the document
size is made at a timing after detecting the document with the
document set sensor (W0).
Document
width sensor
W1W2W3L1L2
●●●●● B5R8.5 x 11R
❍●●●● A55.5 x 8.5
—❍●●● B58.5 x 11
——❍● ●A48.5 x 11
●●●❍● B5R8.5 x 11R
❍●●❍● A4R8.5 x 11R
—❍●❍● B4 *111 x 17
——❍❍ ●A311 x 17
●●●—❍B5R8.5 x 14 *3
❍●●—❍A4R *28.5 x 14 *3
—❍●—❍B4 *111 x 17
——❍—❍A311 x 17
[Note] Sensor: ON: ❍OFF: ●Don't case: —
*1: When the document size detection is AB-2, it is detected as
B5.
*2: When the document size detection is AB-2, it is detected as
8-1/2 x 13".
*3: When the document size detection is INCH 2, it is detected as
(2) Replacement procedures of maintenance parts and
major parts
[RSPF unit]
a. RSPF unit
When
calling
Remark
worn down
[External fitting]
2
3
1
2
Note: When installing, note that the grounding wire of the RSPF
unit and that of the document detection unit are tightened
together.
Note: Disengage the pawl in the arrow direction.
[Paper feed unit section]
a. Paper feed unit
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 43
b. Document transport section cover
1
e. Pickup solenoid
Note: Remove section A of the pickup solenoid from the groove in
the solenoid arm.
2
1
c. Document feed section cover
2
1
2
3
2
3
A
f. Clutch gear assembly parts
6
1
d. Sensor PWB
3
2
1
6
5
1
1
2
4
3
4
2.5 – 4.0 from
the lead edge
of the pawl
2
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 44
g. Pickup roller assembly parts
Note: When setting the pickup roller assembly 4, check to insure
that the rib A is on the rib of the solenoid arm.
A
1
[Interface PWB]
2
3
h. Pickup roller, paper feed roller
4
2
1
4
[Document tray section]
a. Document tray
3
1
1
2
3
1
1
2
1
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 45
1
b. Lack cover
1
3
4
c. Document length detection SW
2
1
b. Drive frame unit
3
4
1
2
1
2
1
1
[Drive frame section]
a. Book sensor
2
c. Drive frame assembly and drive belt
1
2
3
4
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 46
d. Pressure release solenoid
3
b. Transport roller gear
2
e. RSPF motor
3
1
1
1
1
1
c. Reverse gate
1
3
4
2
[Transport section]
a. Clutch
Note: When assembling, check to insure that the rib is in the
groove A of the clutch and that it is fixed with the E-ring.
2
A
1
d. Transport roller
2
1
1
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 47
1
e. PS roller
h. Paper exit roller
1
1
1
2
1
f. Paper feed paper guide lower
Note: When assembling, check to insure that the paper feed
paper guide lower is set to the rib A and the boss B.
1
2
1
1
2
i. Gate solenoid
1
Bearing
B
g. Paper feed paper guide upper
2
1
1
A
Note: When assembling, check to insure that the hook of the
paper exit gate is set in the concave section of the solenoid.
When assembling, check to insure that the D-cut surface of
the bearing faces downward.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 48
7. Operation panel
(2) Electrical section and mechanical section
Operation panel unit
A. Operational descriptions
(1) Outline
The operation panel unit is composed of the operation key PWB,
the inverter/LVDS PWB, the LCD unit, and the operation keys, and
is used to operate the machine and to set and display the machine
status.
The operation key PWB is connected to the ORS light receiving
PWB for detecting the document size. It receives light from the
ORS light emitting PWB attached to the rear frame, detecting the
document size.
No.NameCode, signal nameFunction
RW Operation key PWB—Detects a pressed key on the operation panel.
RW Inverter/LVDS PWB—Drives the LCD and the backlight, and controls the touch panel.
RW ORS light receiving PWB—Receives light from the ORS light emitting PWB to detect the document size.
RW ORS light emitting PWB—Emits light for detecting the document size.
RW OC switchOCSWTiming switch for detecting the document size
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 49
B. Disassembly/assembly/maintenance
a. ORS light emitting PWB
1) Remove the upper cabinet rear cover and the upper cabinet
rear unit.
2) Remove the screw, and remove the document size sensor
unit. Remove the screw and the document size sensor, and
remove the ORS light emitting PWB.
d. Operation key PWB
1) Remove the FD connection cabinet, the front cabinet upper,
the FD paper exit port cabinet, and the operation panel plate.
2) Remove the screw, and remove A and B.
3) Remove the screw and the connector, and remove the operation unit.
A
B
4) Remove the screw and remove the operation key PWB.
b. OCSW
1) Remove the upper cabinet rear cover and the upper cabinet
rear unit.
2) Remove the connector and the screw, and remove the
OCSW.
c. ORS light receiving PWB
1) Remove the FD connection cabinet, the front cabinet upper,
the FD paper exit port cabinet, and the operation panel plate.
2) Remove the connector and the screw, and remove the ORS
light receiving PWB.
e. Inverter/LVDS PWB
1) Remove the FD connection cabinet, the front cabinet upper,
the FD paper exit port cabinet, the operation panel plate, and
the operation panel unit.
2) Remove the connector and the screw, and remove the
inverter/LVDS PWB.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 50
8. External fitting
A. Disassembly
(1) Cabinet disassembly 1
1) Open the front cabinet.
2) Remove the front cabinet band. Pull out the slide pin (B), and
remove the front cabinet (C).
(4) Cabinet disassembly 4
1) Remove the screw, and remove the rear cabinet (A). Remove
the screw, and remove the DC power CFM unit (B) and the
connector. Remove the screw, and remove the upper cabinet
rear cover (C).
∗ When assembling, insert the boss in section D into the hole
in the frame.
B
A
B
A
C
(2) Cabinet disassembly 2
1) Remove the front cabinet.
2) Open the left cabinet. Remove the screw and remove the front
frame cover.
C
A
B
D
(5) Cabinet disassembly 5
1) Remove the manual paper feed unit.
2) Pull out the cassette and the knob.
(3) Cabinet disassembly 3
1) Remove the screw, and slide the paper exit tray cabinet right
to the right to remove.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 51
3) Open the front cabinet.
4) Remove the screw.
5) Lift the cabinet, and slide and remove the front right cabinet
(A) upward.
A
(6) Cabinet disassembly 6
1) Remove the screws, and remove the glass holder right (A).
2) Remove the screws, and remove the scanner right cabinet
(B).
3) Remove the screws, and remove the connection right cabinet
(C).
A
(8) Cabinet disassembly 8
1) Remove the rear cabinet.
2) Remove the screws, and remove the FD connection cabinet
(A) and the front cabinet upper (B). Remove the screws, and
slide and remove the rear left cabinet cover (C) and the rear
left cabinet (D) upward.
B
C
(7) Cabinet disassembly 7
1) Remove the rear cabinet.
2) Remove the manual paper feed unit.
3) Remove the front right cabinet.
4) Remove the screws, and slide and remove the rear right cabinet (A) upward.
5) Remove the screws, and slide and remove the right lower cabinet (B) upward.
C
D
A
B
(9) Cabinet disassembly 9
1) Remove the screws, and remove the FD paper exit port cabinet (A) and the operation panel plate (B).
A
B
(10) Cabinet disassembly 10
1) Remove the screw, and remove the upper cabinet rear cover.
Remove the connector and the screw, and remove the upper
cabinet rear unit.
B
A
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 52
9. Others
A. Disassembly/assembly/maintenance
(1) Maintenance target parts
✕: Check (Clean, replace, or adjust as necessary.) ❍: Clean ▲
Unit nameNo.Part name
Filters1Ozone filter✕ ▲▲▲▲▲▲▲▲
2Sub ozone filter✕ ▲▲▲▲▲▲▲▲
Drive section3Gears✩ ✩✩✩✩✩✩✩✩
4Belts✕ ✕✕✕✕✕✕✕✕
Others5Sensors✕ ✕✕✕✕
When
calling
50K100K 150K 200K 250K 300K 350K 400KRemark
: Replace ∆: Adjust ✩: Lubricate ❏: Shift position
1
5
5
5
5
5
5
5
5
5
5
5
2
5
5
5
5
5
5
5
3
3
5
5
5
5
5
5
5
5
33
3
3
3
3
3
3
4
3
3
3
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 53
(2) Maintenance parts and major parts replacement
a. Ozone filter
1) Remove the ozone filter cover, and remove the ozone filter.
<3> HDD
1) Remove the connector and the screws, and remove the HDD
unit.
b. Sub ozone filter
1) Remove the sub ozone filter cover, and remove the sub ozone
filter.
c. Printer controller PWB
<1> Printer controller unit
1) Remove the screws, and remove the printer controller unit.
2) Remove the screws, and remove the HDD.
<4> FLASH PWB
1) Release lock, and remove the FLASH PWB.
<2> Network PWB
1) Remove the screws, and remove the network PWB.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 54
<5> Fan
1) Remove the connector, and remove the fan.
<6> PRT control PWB
1) Remove the screw, and remove the PRT control PWB.
<3> Power PWB
1) Remove the rear cabinet and the DC power CFM unit.
2) Remove the connector and the screw, and remove the power
PWB.
d. PWB
<1> PCU PWB
1) Remove the rear cabinet.
2) Remove the connector and the screw, and remove the PCU
PWB.
<2> High voltage MC power PWB
1) Remove the rear cabinet.
2) Remove the connector, the screw, and the earth wire (commonly fixed), and remove the PCU PWB unit.
3) Remove the connector and the screw, and remove the high
voltage MC power PWB.
<4> Driver PWB
1) Remove the rear cabinet, the rear left cabinet lid, and the rear
left cabinet.
2) Remove the screw and the connector, and remove the driver
PWB.
<5> AC PWB
1) Remove the screw, the rear cabinet, the rear left cabinet lid,
and the rear left cabinet.
2) Remove the screw and the harness, and remove the driver
PWB unit.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 55
3) Remove the harness and remove the AC PWB from the supporter.
<6> High voltage TC power PWB
1) Remove the rear cabinet, the DC power CFM unit, the rear left
cabinet lid, and the rear left cabinet.
2) Remove the connector, the harness, and the screw. Remove
the Power PWB unit.
<8> Drum drive unit
1) Remove the rear cabinet.
2) Remove the DC power CFM unit.
3) Remove the driver PWB unit.
4) Remove the PCU PWB unit.
5) Remove the screw and the connector, and remove the intake
duct FAN.
6) Remove the screw and the intake duct.
7) Remove the high voltage MC PWB.
8) Remove the connector screw and the drum drive unit.
∗ Remove the eight screws which are indicated with an arrow
mark on the plate drive frame and are fixing the resin drive
frame.
(Never remove the screws which are fixing the plate drive
frame upper.)
3) Remove the connector and the screw, and remove the high
voltage TC power PWB.
<7> ICU PWB
1) Remove the paper exit tray cabinet right.
2) Remove the screw, and remove the box cover. Remove the
screw, and remove the ICU PWB.
AR-C172M DESCRIPTIONS OF EACH SECTION 7 - 56
[8] SETTING AND ADJUSTMENTS
Each adjustment item in the adjustment item list is indicated with its JOB number.
Perform the adjustment procedures in the sequence of Job numbers from the smallest to the greatest.
However, there is no need to perform all the adjustment items. Perform only the necessary adjustments according to the need.
Unnecessary adjustments can be omitted. Even in this case, however, the sequence from the smallest to the greatest JOB number must be
observed.
If the above precaution should be neglected, the adjustment would not complete normally or a trouble may occur.
JOB NoADJUSTMENT ITEM LISTSIMULATION
ADJ 1 High voltage adjustmentADJ 1A Main charger grid voltage adjustment8-2
ADJ 1B DV bias voltage adjustment8-1
ADJ 1C Transfer voltage adjustment8-6
ADJ 2 Image density sensor adjustmentADJ 2A Color image density sensor adjustment (adjustment by the
ADJ 7 Copy image focus (main scanning direction copy magnification ratio) adjustment (CCD unit position adjustment) 48-1
ADJ 8 Sub scanning direction copy magnification ratio adjustment48-1
ADJ 9 Main scanning direction copy image position adjustment (Scanner (reading) section)50-12
ADJ 10 Copy image position/image loss/void area adjustment50-1/50-2
ADJ 11 Copy color balance/density
adjustment
ADJ 12 Fusing pressure adjustment
ADJ 13 Fusing paper guide position adjustment
ADJ 14 Document size sensor adjustmentADJ 14A Original size sensor detection point adjustment41-2
ADJ 15 Manual paper feed tray paper size sensor adjustment40-2
ADJ 16 Touch panel coordinates setting65-1
ADJ 17 Power voltage adjustmentADJ 17A 3.4 V power voltage adjustment
ADJ 18 FAX/scanner mode image loss adjustment50-27
ADJ 19 RSPF scanning position automatic
adjustment
ADJ 20 RSPF lead edge skew adjustment
ADJ 21 Collective adjustment of image
position and magnification ratio
ADJ 22 Printer color balance adjustmentADJ 20A Printer automatic color balance adjustment67-24
∗1: By executing the collective adjustment of image position and magnification ratio (ADJ21) (Automatic void adjustment SIM50-28), the
adjustments of SIM50-10, 48-1, 50-12, and 50-1 can be simply and automatically performed at once.
ADJ 5A Main scanning direction image position adjustment
ADJ 5B Sub scanning direction image position/print area adjustment
ADJ 6B Copy image sub scanning direction distortion adjustment
ADJ 6C Copy image main scanning direction distortion adjustment
ADJ 6D Scan image distortion adjustment
ADJ 11A CCD gamma adjustment (CCD calibration)
ADJ 11B Copy color balance adjustment (Auto adjustment)46-24
ADJ 11C Copy color balance adjustment (Manual adjustment)46-21
ADJ 11D Copy density adjustment in low-density area
ADJ 11E Copy color balance density adjustment (each copy mode)
ADJ 11H Copy color balance adjustment (Single color Copy mode)
ADJ 11I Auto color balance adjustment by user (Copy color balance auto
ADJ 14B Original size sensor sensitivity adjustment41-2
ADJ 17B 5.0 V power voltage adjustment
ADJ 19A RSPF scanning position automatic adjustment53-8
ADJ 19B RSPF image lead edge adjustment50-6
(∗1)50-28
ADJ 20B Printer color balance adjustment (By the key operator program)
adjustment jig)
(Print engine section)
(Print engine section)
(Normal document copy mode)
(Normally unnecessary to adjust.)
(Normally unnecessary to adjust.)
(Copy document copy mode)
(Black text and black line reproduction adjustment) (Normally
unnecessary to adjust.)
(Normally unnecessary to adjust.)
adjustment enable setting and adjustment)
44-13
50-10
50-5
63-3 (63-5)
46-1/2
46-10 to 16
63-9
46-27
46-25
26-53
AR-C172M SETTING AND ADJUSTMENTS 8 - 1
ADJ 1High voltage adjustment
Since the output voltage cannot be checked directly due to the
machine structure, the adjustment value of the simulation is set to
the default (specified value) to perform the adjustment.
ADJ 1AMain charger grid voltage adjustment
1) Enter the SIM 8-2 mode.
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
ColorItem Operation mode
KA: HIGH SPEEDHigh speed (117mm/s) (B & W)180 – 70062053.5 ± 0.2vCNMONK1–620v
Remark: When the default value is set, the specified voltage is
outputted.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is outputted or to adjust by referring to the output voltage, use
the method below.
1) Remove the rear cover of the machine.
2) Remove the image process fan motor and the duct.
2) Select the output mode to be adjusted with the color key and
scroll key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
Adjustment value
Adjustment
range
180 – 70062053.5 ± 0.2vCNMONK1–620v
180 – 70062053.5 ± 0.2vCNMON3–620v
180 – 70062053.5 ± 0.2vCNMON7–620v
180 – 70062053.5 ± 0.2vCNMON11 –620v
3) Connect the high voltage adjustment harnesses (DHAi-
Specified
value
(Default)
3471FCZZ/DHAi-3472FCZZ) with the connectors CNMON
and CNMONK on the high voltage PWB.
SIM 8-2
Main charger grid voltage
Monitor (High voltage PWB)
Monitor voltage
(Specified value)
Connector
Pin
No.
Actual
voltage
A
B
4) Enter the SIM8-1 mode.
5) Select the output mode to be adjusted with the color key and
the scroll key.
6) Check that the pin numbers of the connectors CNMON and
CNMONK are properly assigned to the connector pin numbers
of the high voltage adjustment harness.
7) Apply a digital multi-meter to the connector pins of the high
voltage adjustment harness corresponding to the output mode
to be adjusted.
AR-C172M SETTING AND ADJUSTMENTS 8 - 2
8) Press the [EXECUTE] key.
The main charger grid voltage is outputted for 30sec.
If this operation is performed for a long time, the OPC drum
and the developing roller may be damaged. Be careful to perform this operation in a short time.
It is advisable to install an unnecessary developing unit and
unnecessary OPC drums to the machine for this adjustment.
9) Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the above specified range,
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
High voltage PWB
PCU PWB
Developing unit
Photoconductor unit
High voltage circuit electrode
ColorItemOperation mode
KA: HIGH SPEEDHigh speed (117mm/s) (B & W)0 – 5852153.94 ± 0.1VCNMONK3–215v
Remark: When the default value is set, the specified voltage is
outputted.
There is, therefore, no need to check the output voltage
unless there is a doubt for any abnormality in the output
voltage.
If there is a need to check that the normal voltage is outputted or to adjust by referring to the output voltage, use
the method below.
1) Remove the rear cover of the machine.
2) Remove the image process fan motor and the duct.
ADJ 1BDV bias voltage adjustment
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
1) Enter the SIM 8-1 mode.
SIM 8-1
2) Select the output mode to be adjusted with the color key and
the scroll key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
Adjustment value
Adjustment
range
0 – 5852153.94 ± 0.1VCNMONK3–215v
0 – 5852655.76 ± 0.1VCNMON1–265v
0 – 5852655.76 ± 0.1VCNMON5–265v
0 – 5852404.75 ± 0.1VCNMON9–240v
3) Connect the high voltage adjustment harnesses (DHAi-
Specified
value
(Default)
3471FCZZ/DHAi-3472FCZZ) with the connectors CNMON
and CNMONK on the high voltage PWB.
Monitor (High voltage PWB)
Monitor voltage
(Specified value)
Developing bias voltage
Pin
Connector
No.
Actual
voltage
A
B
4) Enter the SIM8-2 mode.
5) Select the output mode to be adjusted with the color key and
the scroll key.
6) Check that the pin numbers of the connectors CNMON and
CNMONK are properly assigned to the connector pin numbers
of the high voltage adjustment harness.
AR-C172M SETTING AND ADJUSTMENTS 8 - 3
7) Apply a digital multi-meter to the connector pins of the high
voltage adjustment harness corresponding to the output mode
to be adjusted.
8) Press the [EXECUTE] key.
The developing bias voltage is outputted for 30sec.
If this operation is performed for a long time, the OPC drum
and the developing roller may be damaged. Be careful to perform this operation in a short time.
It is advisable to install an unnecessary developing unit and
unnecessary OPC drums to the machine for this adjustment.
9) Check the monitor voltage with the digital multi-meter.
If the monitor voltage is not in the above specified range,
change the adjustment value and adjust again. If the specified
voltage is not obtained even by changing the adjustment
value, the following parts may be judged as defective.
High voltage PWB
PCU PWB
Developing unit
Photoconductor unit
High voltage circuit electrode
ItemPrint mode
A PLAIN SPX CLColor Normal paper78mm/s153 141 119 11951 - 2552222
B PLAIN DPX CLColor Normal paper(Duplex mode)78mm/s168 155 129 1292.3 2.3 2.3 2.3
COHP1 CLColorTransparency film 178mm/s2041871531533333
D OHP2 CLColor Transparency film 258.5mm/s 137 150 153 1631.7 2.233.3
E HEAVY P1 SPX CLColor Thick paper 158.5mm/s 158 146 122 1222.1 2.1 2.1 2.1
F HEAVY P1 DPX CLColor Thick paper 1(Duplex mode) 58.5mm/s 188 173 142 1422.7 2.7 2.7 2.7
G HEAVY P2 CLColor Thick paper 258.5mm/s 173 159 132 1322.4 2.4 2.4 2.4
HENVELOPE CLColorEnvelope78mm/s1531411191192222
I PLAIN SPX BWB & W Normal paper117mm/s 1682.3
J PLAIN DPX BWB & W Normal paper(Duplex mode) 117mm/s 1782.5
K OHP1 BWB & W Transparency film 178mm/s2043
L OHP2 BWB & W Transparency film 258.5mm/s 1371.7
M HEAVY P1 SPX BWB & W Thick paper 158.5mm/s 1471.9
N HEAVY P1 DPX BWB & W Thick paper 1(Duplex mode) 58.5mm/s 1782.5
O HEAVY P2 BWB & W Thick paper 258.5mm/s 1632.2
P ENVELOPE BWB & W Envelope117mm/s 1682.3
ADJ 1CTransfer voltage adjustment
This adjustment must be performed in the following cases:
• When the high voltage power PWB is replaced.
• When a U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM of the PCU PWB is replaced.
1) Enter the SIM 8-6 mode.
SIM 8-6
2) Select the mode to be adjusted with the color key and scroll
key.
3) Enter the adjustment value (specified value), and press the
[OK] key.
By entering the default value (specified value), the specified
voltage is outputted.
Standard setting
value (Default)
KCMYKCMY
Adjustment
range
Output voltage (Kv)
Color Actual output variable range Voltage change/Adjustment value (1) (Varying amount when the adjustment value is changed by 1)
K0 to 4000VAbout 19.6V
C0 to 4500VAbout 22.1V
M0 to 6000VAbout 29.4V
Y0 to 6000VAbout 29.4V
Press the [EXECUTE] key to output the transfer voltage.
ADJ 2Image density sensor adjustment
The image density sensor sections are of uneven quality in parts
and assembly. This causes variations in the absolute detection
level between machines. This adjustment (calibration) is performed to correct the variations.
This adjustment is required in the following cases:
• When the image density sensor is replaced.
• When the transfer unit is replaced.
• When maintenance is performed.
• When U2 trouble occurs.
• When the PCU PWB is replaced.
• When the EEPROM on the PCU PWB is repalced.
AR-C172M SETTING AND ADJUSTMENTS 8 - 4
The targets of the adjustment are the color image density sensor
and the black image density sensor. There are following adjustment methods:
• Color image density sensor adjustment (adjustment by the
adjustment jig) SIM44-13
• Black image sensity sensor adjustment SIM44-2
• Image density sensor adjustment (The color image density sen-
sor and the black image density sensor are adjusted at the
same time.) (Simple adjustment) SIM44-36
Normally the following adjustments are executed:
• ADJ 2A Color image density sensor adjustment (adjustment by
the adjustment jig) (SIM44-13)
• ADJ 2B Black image density sensor adjustment (SIM44-2)
Note:
There are two methods to adjust the color image density sensor;
one method uses the adjustment jig, and the other method does
not use it.
If there is no adjustment jig available, the simple adjustment
(SIM44-36) can be made, which may, however, result in insufficient adjustment accuracy depending on the machine condition.
If toner, the OPC drum, and the transfer belt are not new ones or
almost new ones, the simple adjustment is not recommended.
Even though the machine conditions are well, the adjustment by
use of the adjustmment jig gives a higher adjustment accuracy
than the adjustment without the adjustment jig (simple adjustment).
Also note that SIM44-36 must not executed unnecessarily after
execution of the color image density sensor adjustment (adjustment by the adjustment jig) with SIM44-13.
If SIM 44-36 is executed, the contents of the color image density
sensor adjustment (adjustment by the adjustment jig) with SIM4413 are erased, and the adjustment result of SIM44-36 is saved.
When the color image density sensor is adjusted with SIM44-13
and the black image density sensor is adjsuted with SIM 44-2, the
adjustment with SIM44-36 is not required.
To adjust the black image density sensor, the adjustment jig is not
required.
Before executing this adjustment, check the following items:
• Check that the color imagte density sensor is clean.
• Check that the image density sensor calibration plate is clean.
• Check that the transfer belt is free from scratches.
ADJ 2AColor image density sensor
adjustment (adjustment by the
adjustment jig)
1) Open the front cover of the machine.
2) Insert the color image density sensor adjustment jig
(CPLTM6305FC01) into the long hole in the transfer unit
frame, and close the left cabinet.
Min
Max
DisplayContent
APCS_C
CARB ADJ
BPCS_C
DARK
CPCS_C
LED ADJ
7) Remove the color image density sensor adjustment jig.
If the adjustment is not completed normally, "ERROR" is dis-
played.
In that case, check the following sections for no abnormality. If
there is any abnormality, repair the part and perform the adjustment again. In case of an error, the adjustment result is not
revised.
• Image density sensor
• PCU PWB
• Transfer belt
Color image density
sensor LED current
adjustment target value
Color image density
sensor dark voltage
level
Color image density
sensor current
adjustment value
Value
1255108
02550
125551
Value
Default
value
Note:
The color image density sensor adjustment jig is available in the
following two forms:
• The jig metal plate with the calibration sheet attached to it
(CPLTM6305FC01)
ADJ 2BBlack image density sensor
adjustment
1) Enter the SIM44-2 mode.
3) With the front cover of the machine open (with the cover open/
close switch OFF), turn on the power.
4) Perform
SIM 44-13
5) Close the front cover of the machine.
6) Press the [EXECUTE] key.
The adjustment is performed automatically. When the adjust-
ment is completed, the adjustment result is displayed and the
the [EXECUTE] key display returns to the original state.
2) Press the [EXECUTE] key.
The adjustment is performed automatically. When the adjust-
ment is completed, the adjustment result is displayed and the
the [EXECUTE] key display returns to the original state.
Min
DisplayContent
APCS_C
LED ADJ
BPCS K
LED ADJ
CPCS_K
GAIN
DPCS_K
DARK
EPCS_K
GRND
F BELTMAX Transfer belt surface
G BELTMIN Transfer belt surface
Color image density
sensor LED current
adjustment value
Black image density
sensor LED Current
adjustment value
Black image density
sensor output gain
(AMP) adjustment value
Black image density
sensor dark voltage
level
Black image density
sensor transfer belt
surface detection level
max. detection level
(Black image sensor)
min. detection level
(Black image sensor)
Max
Value
Value
125551
125551
015 0
02550
02550
02550
02550
Default
value
AR-C172M SETTING AND ADJUSTMENTS 8 - 5
Min
Max
DisplayContent
H BELTDIFDifference between the
max. value and the min.
value of the transfer belt
surface detection level
(BELTMAX-BELTMIN)
If the adjustment is not completed normally, "ERROR" is displayed.
In that case, check the following sections for no abnormality. If
there is any abnormality, repair the part and perform the adjustment again.
In case of an error, the adjustment result is not revised.
• Image density sensor
• PCU PWB
• Transfer belt
Value
02550
Value
Default
value
ADJ 3Image focus, image skew
adjustment (LED (writing) unit)
6) Check the printed focus adjustment pattern for each color.
If focus is proper, the half-tone belts are printed properly.
When four or five half-tone belts of each color are printed and
there is no density difference in the main scanning direction
(back and forth), the focus is proper both on the front and the
back sides.
Paper exit
direction
(1) LED print engine image focus adjustment (LED
(writing) unit)
This adjustment must be performed in the following cases:
• When the scanner (writing) unit is replaced.
• When the scanner (writing) unit is removed from the machine.
• When the print image is shifted.
(Especially conspicuous for text and line drawings)
(The scanner (reading) unit is normal, but the print image focus
of the print engine is not normal.)
• When there is uneven density in the main scanning direction.
• When the color balance adjustment does not result in proper
color matching.
• When in installation or when the installing site is changed. (Necessary depending on the case)
1) Execute the process correction forcibly. (SIM44-6)
This simulation is used to correct the print density of the
adjustment pattern.
2) Enter the SIM 61-4 mode.
SIM 61-4
3) Set the items A, B and C according to the table below.
ParameterSet value
APRINT PATTERN2
BLINE PITCH7
CPOSITION6
4) Select the A4 (11 x 8 1/2) paper feed tray.
5) Press the [EXECUTE] key.
The focus adjustment pattern is printed.
Front side
Check that the half-tone belts of each color are printed
in good balance.
7) If the above condition is not satisfied, turn the focus adjustment screws on the front/rear frame sides to adjust focus.
Focus on the front side can be separately adjusted from focus
on the rear side.
This adjustment must be performed in the following cases:
• When the scanner (writing) unit is replaced.
• When the scanner (writing) unit is removed from the machine.
• When the print image includes skew.
(When the scanner (reading) unit is normal and the print image
of the print engine includes skew.)
• When a color image registration error occurs.
(There is an image registration difference in the main scanning
direction.)
• When there is uneven density in the main scanning direction.
• When the color balance adjustment does not result in proper
color matching.
• When in installation or when the installing site is changed. (Necessary depending on the case)
1) Enter the SIM 64-1 mode.
Longitudinal direction
Right-angle
Reference line
6) If the above conditions are not satisfied, remove the developing unit and turn the print engine image skew adjustment
screw to adjust.
At that time, use SIM 7-1 to set DV CHECK DISABLE to
Enable and to disable the developing unit installation detection.
If skew is made in the arrow direction A, turn the adjustment
screw clockwise. If skew is made in the arrow direction B, turn
the adjustment screw counterclockwise.
SIM 64-1
2) Set the items A and B according to the table below.
ParameterSet value
APRINT PATTERN1
BDENSITY1
3) Select the A3 (11 x 17) size paper feed tray.
4) Select Black (K) and press the [EXECUTE] key.
The grid patter (one page) is printed.
5) Check the printed grid pattern. (Check for image skew (distor-
tion).)
If the right-angle level of the traverse print line is 0.5mm or
less for the longitudinal print line of paper, there is no need to
adjust.
AR-C172M SETTING AND ADJUSTMENTS 8 - 7
7) Enter the SIM 61-4 mode.
SIM 61-4
8) Select the A4 (11 x 8.5) size paper feed tray.
9) Press the [EXECUTE] key.
The print engine image skew adjustment pattern is printed.
(One page)
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