This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Document Revision History
Ver.Date
No.
Revision
In-Charge
PageChanges
Rev. 12 /
Preface
This manual describes the procedures of the maintenance of the AR-C360P printer.
The document is produced for maintenance personnel use.
Note!
• The descriptions in this manual are subject to change without prior notice.
• In preparing the document, efforts have been made to ensure that the information in it is accurate.
• The parts used for the printers are sensitive and, if handled improperly, may be damaged. It is
strongly recommended that the products are maintained by maintenance men registered with
Sharp Electronics Corporation.
• Errors may be crept into the document. Sharp assumes no responsibility for any damage
resulting from, or claimed to be the results of, those repairs, adjustments or modifications to the
printers which are made by users using the manual.
Rev. 13 /
In order to use the product with safety
In order to use the product with safety, make sure to read the user's manual (this manual) before using
the product.
General Caution
Do not touch the safety switch of the internal parts of the printer. Electric shock may
occur due to the occurrence of high pressure. The rotation of the gear may also cause
injury.
Do not use an extremely flammable spray around the printer. Fire may occur because of
parts with high temperature.
Please let our staff in Customer Center know after unplugging mains connector when
the cover gets extremely hot, is smoking, emits questionable odor, or is making strange
noise. Fire may occur.
Please let our staffs in Customer Center know after unplugging mains connector when
liquid such as water goes into the printer. Fire may occur.
Please take a foreign object away after unplugging when you drop foreign objects such
as clips into the printer. That situation may case electric shock, fire, and/or injury.
Do not conduct an operation or an analysis other than specified in user's manual. That
situation may case electric shock, fire, and/or injury.
Please let our staffs in Customer Center know after unplugging mains connector when
the printer has fallen down or damaged. That situation may case electric shock, fire, and
injury.
Do not connect the power cord, the printer cable, or the ground wire other than instructed in user's manual. Fire can be induced if misused.
Do not insert objects at the vent hole. Do not operate the printer with the rear cover
opened. Electric shock, fire, and/or injuries may occur.
Do not place a cup with liquid on the printer. Electric shock, fire, and/or injuries may
occur.
Risk of explosion if battery is replaced by an incorrect type.
Battery of the printer need not to be replaced. Do not touch the battery.
Replace the whole board to replace the CU main board.
In the case of replacing batteries at board repairs, replace with the specified type ones.
stallation of another type batteries may result in explosion.
Caution for used batteries are as follows; do not recharge, force open, heat or dispose
of in fire.
When open the printer cover, do not touch the fuser unit. You may get burned.
In-
Do not throw toner cartridges, or image drum cartridges into fire. You may get burned by
dust explosion.
Rev. 14 /
Do not go near an ejection area while the power is on and in printing. You may get
injured.
Figure 2-2-1 illustrates the block diagram of the Main Control PCB (ASP PWB).
+1.8V
LT1764EQ
3.3V to 1.8V
+3.3V
1
ENG_CLK
0
ENG_CLK
CLK
VCLK2SERIAL-
+2.5V
Regulator
5V to 2.5V
LTC3412EFE
+5.0V
nomount
X’tal
30.000
EEPROM
MHz
PCI
PCICLK
Slot
100pin
USB
USB2.0
NET2280
HW_
RESET-N
PCICLK3
Connector
120pinTQFP
+2.5V
+3.3V
Connector
IEEE1284
+5.0V
PCI
Slot
68pin
Regulator
PLLVDD
CVDD
PCICLK2
COREGOOD
PLVDD
MAX1718
5V to CVDD
StepDownCont
+5.0V
I/F
Engine
WDATA0/1/2/3
256pinBGA
Xilinx FPGA
XC2S200E-6FT256C
+3.3V
LM2636
Regulator
5V to 3.3V
+5.0V
Clock Generator
CY27EE16FZEC
14.318MHz
Crystal oscillator
CN
W83783S
FAN Control
S_A[12:0]
8Mbit Flash
Resident 256MByte
+3.3V
Microwire
2kbit EEPROM
S_DQ[63:0]
4
3
2
1
DDR
512Mbit
PCICLK6
SDRAM
+2.5V
LED
XC9572XL
Xilinx FPGA
100pinTQFP
+3.3V
HW_RESET-N
CPU
TM5800
474pinCBGA
C_A[12:0]
C_DQ[63:0]
2
1
SDRAM DIMM
+3.3V
Parallel
74LVX161284
ASIC1
144pinPQFP
PCICLK1
+3.3V, 2.5V, CVDD, PLLVDD
+2.5V
CVDD
PLLVDD
+3.3V
+3.3V
CPU SidebandPCI_AD[31:0]
VIDEO_0/1/2/3
PCICLK5
PCI_CLK_CPU 33MHz
CPU_CLK 66MHz
Clock Gen
X’tal
14.318MHz
LPC BUS
ASIC2
256Kbit
I2CROM
PCI_CLK_SB=33MHz
CLK14MCLK48M
0.75%
Center-spread
+3.3V
+2.5V
+1.8V
+3.3V
544pinPBAG
+1.8V
+3.3V
2Mbit
Boot Flash
+5.0V
XD[7:0]
SA[19:0]
PCI_CLK[6:0]
4MByte
Resident
BRDATA0[31:0]
BRDATA1[31:0]
BRDATA2[31:0]
BRDATA3[31:0]
Primary IDE
CompactFlash
P_DA[2:0]
P_DD[15:0]
M1535+
353pinBGA
SouthBridge
XD[7:0]
RTC
X’tal
32.768MHz
VCLK0/1
4
3
64MB
+5.0V
+3.3V
2
1
8Mbit
PIPELINED
Battery
SRAM
+3.3V
HDD 2.5inch
S_DA[2:0]
S_DD[15:0]
+2.5V
ICLK_VXP
MCLK_VXP
Clock Generator
0/1/2/3
MCLK_SRAM
20GB
Secondary IDE
+5.0V
+3.3V
+5.0V
14.318MHz
Crystal oscillator
CY27EE16FZEC
+3.3V+3.3V
HW_RESET-N
LEUS-T
MAX811
Reset IC
+5.0V
Figure 2-2-1
Rev. 117 /
The Main Control PCB of the 1200dpi printer consists of a CPU, RAM, HDD, CompactFlash, SouthBridge
LSI, EEPROM, KeyChip, PCI Bus Option and Advanced Interface.
(1)CPU
1GHz Transmeta TM5800 CPU.
(2)RAM
There are 3 types of RAMs. SDRAM DIMM is the only user option RAM. The DDR and
video RAM configuration is fixed and cannot be modified. Only the total memory of the
DDR and SDRAM DIMM is recognized as a usable RAM within the system configuration.
DDR: This is 256MB and 266MHz in speed, and directly soldered on the ASP PCB.
SDRAM DIMM : 128, 256, and 512MB; 133MHz speed, 144p DIMM mounted in DIMM slot.
Video RAM: RAM that is directly soldered on ASP PCB for the video LSI.
(3)HDD/CompactFlash
The 1200-dpi program is stored in a storage medium. Depending on the model, the system
is equipped with HDD or CompactFlash. However, HDD may be added as an option to
a model with CompactFlash. HDD is a mold assembly similar to the one for the 600-dpi
system.
(4)SouthBridge LSI
This is a ALI-make BGA package LSI. It mainly controls the USB I/F, Centro I/F, image
processing LSI, Ethernet board, and MFP extension board via the PCI bus.
(5)Image Processing LSI
This is an EFI-make BGA package LSI. It is mainly for image processing.
(6)EEPROM
This is a 3.3V/256kbit EEPROM with an 8-pin DIP package mounted on the IC socket.
It stores various settings that the control unit manages.
(7)KeyChip
The KeyChip is an 8-pin DIP package mounted on the IC socket. It is purchased from
EFI and stores EFI management information.
(8)PCI Bus
100-pin: An MFP extension board is available as optional equipment.
68-pin: A LAN card is provided as standard equipment.
(9)Advanced Interface
Standard:Centronic Parallel I/F (IEEE-1284)
USB (USB2.0) I/F
Ethernet Board
Additional PCB : MFP Extension Board (PCI BUS Connection)
Rev. 118 /
2.2Engine Control PCB (S2V PWB)
Figure 2-3 illustrates the block diagram of the Engine Control PCB (S2V PWB).
4
Toner
Supply
Motor MC
Fuser
C-ID
M-ID
Y-ID
K-ID
9
Motor
Motor
9
Motor
999
Motor
Toner
44
49
Supply
BELT
Motor
Job
Offset
Toner
Disposal
Motor KY
Motor
Motor
Motor
FAN
FAN
3
Power
UNIT
LV-POWER
11
4
2
BELT
FAN
4
RFID
9
Regist
Tray1
/MPT
PU-
2
Motor
Motor
Geared
1st Regist
Registration
Board
Cover
8
Motor
2
2
Clutch
2
Shutter
3
3
(fuse)
Thermister*4
FUSER UNIT
12
MPT
1st Paper
Size SW
Waste toner
Hole IC
Waste toner
Box Hole IC
Belt
Hole IC
2
5
3
Driver
Tray1/MPT
Motor driver
Regist Motor
SUB
CPU
6
DUPLEX UNIT
13
10
BELT
Motor
Driver
19.66MHz
BOARD-MOTOR-DRIVER (S2M)
KY
TonerSupply
Motor Driver
JobOffset/
Motor Driver
TonerSupplyMC
2nd Regist
Clutch
ENV Sensor
4
2
WR IN2
20
BOARD-
FRONT-SENSOR
(S2S)
70
4
BOARD-
Hum/Temp
END
PAPER
3
1st Paper
Near END
1st
Lifter
(S2C)
Media weight
9
MPT
MPT
Paper End
Hopping
TRAY-SENSOR
3
9
OHP
Sensor
3
3
MPT Paper
END
MPT Home
Position
1st
Cover
IN1
1st
Hopping
C LED HEAD
M LED HEAD
(S2H)
Y LED HEAD
K LED HEAD
44 44
BOARD-LED-HEAD-POWER-RELAY
100
6
10101010
COCOA
ASIC
COCOA
ASIC
COCOA
ASIC
COCOA
2
(S2R)
SENSOR
Job offset
BOARD-REAR-
6
Cover
Left
ID
FAN
Position
FAN
Fuser
Unit
Contoroller
(X7G)
Solenoid
BOARD-
EXIT
Facedown
OPERATION PANEL
Stacker
Full faceUP
12
Stacker Full
faceDown
Job offset
ASIC
19MHz
13
paper end
Cover
Face UP
(top)
33
32kbit
SRAM
Flash
8Mbit
10
PU-BOARD
CPU
ASIC
MCON
28MHz
EEPROM
(S2V)
9
Short Plug
16
14
24
PCB
C-ID
UNIT
(fuse)
M-ID
Y-ID
K-ID
FAN
UNIT
UNIT
UNIT
ID
(fuse)
(fuse)
(fuse)
(front)
Eraser
PCB
Eraser
PCB
Eraser
PCB
Eraser
Toner
Supply
ID
UpDown
Toner
Supply
Toner-C
Sensor
Toner-M
Sensor
Toner-Y
Sensor
Toner-K
Sensor
333
33
C-Drum
Phase
(SGG)
M-Drum
Phase
Y-Drum
Phase
BOARD-CARTRIDGE-SENSOR
K-Drum
Phase
(S2J)
(S2J)
(S2J)
(S2J)
14
OPTIONAL
TRAY UNIT
UNIT
HV-POWER
Aligment
Right
Aligment
Left
BOARD-
REGIST-SENSOR
(S2Z)
23 3
2
11
FINISHER/
Disposal
COVER
5
3
3
INVERTER UNIT
Disposal
Toner Full
Hole IC
Toner Box
Upper
(fuse)
BELT UNIT
Density
Sensor
Slack
Paper
Fuser
release
Figure 2-3
Rev. 120 /
2.3Power Unit
This is a high voltage power unit consisting of high voltage power source circuit and a low voltage
power unit composed of a power unit consists of an AC filter circuit, low voltage power source circuit
and heater drive circuit.
(1)Low Voltage Power Unit
This circuit generates the following voltage.
Output Voltage
+5V (1)
+5V (2)
+5V (3)
+24V
PU, Logic Circuit Power Source
LED Head
CU
For Monitor Drive
Purpose
(2)High Voltage Power Unit
This circuit generates the following voltage that is more powerful than +24V necessary for
the electrophotographic process, according to the control sequence from the control PCB.
Output
CH
DB
SB
BB
TR
-0.8 to -1.4kV
-100 to -450V/250V
-300 to -700V
Drop from SB Output with Zener
0 to 7kV
Voltage
Purpose
Power to Electrification Roller
Power to Development Roller
Power to Toner Supply Roller
Power to Development Blade
Power to Transfer Roller
Remarks
Rev. 121 /
2.4Mechanical process
Figure 2-4 illustrates the mechanical process of the AR-C360P.
2.4.1 Electrophotographic Processing Mechanism
(1)Electrophotographic process
The overview of the electrophotographic process is described below.
1Electrification
DC power is applied to the CH roller to evenly negatively electrify the surface of the
OPC drum.
2Exposure
The LED head irradiates light on the surface of the OPC drum that is charged with
a negative electrical load. The negative electrical load attenuates according to the
intensity of light, for the irradiation area of the OPC drum surface. Further, the
electrostatic latent image is created on the OPC drum surface according to the
electrical potential.
3Development
The negatively charged toner comes in contact with the OPC drum to fuse the
electrostatic latent image by electrostatic force, to create a significant image on the
surface of the OPC drum.
4Transfer
Paper is pressed against the surface of the OPC drum, then conveyed by the transfer
roller from behind. The toner and positive electrical load of a reverse electrode is
applied, then the toner image is transferred to the paper.
5Cleaning
The cleaning blade removes residual toner on the OPC drum after the toner is
transferred to the paper.
6Fuser
Heat and pressure is applied to the toner image on the paper to fuse the image on
the paper.
Rev. 123 /
(2)Electrification
A negative DC power is applied to the electrification roller to evenly negatively electrify
the surface of the OPC drum.
Power
supply
unit
Electrification roller
OPC drum
(3)Exposure
The LED head irradiates light on the surface of the OPC drum that is charged with a
negative electrical load. The negative electrical load attenuates according to the intensity
of light, for the irradiation area of the OPC drum surface. Further, the electrostatic latent
image is created on the OPC drum surface according to the electrical potential.
Power
supply
unit
Electrification roller
OPC drum
LED head
Paper
LED head
OPC drum
Rev. 124 /
(4)Development
The negatively charged toner comes in contact with the OPC drum to fuse the electrostatic
latent image by electrostatic force, to create a significant image on the surface of the OPC
drum.
1The sponge roller precipitates toner on the development roller. The toner is then
negatively electrified.
Electrification roller
Development blade
Sponge roller
OPC drum
Development roller
2The development blade removes excess toner from the development roller, then a
thin toner layer is created on the development roller.
3The toner is sucked into the electrostatic latent image where the OPC drum and
development roller comes in contact.
(5)Transfer
The transfer roller is made of a conductive sponge. Paper is pressed against the OPC
drum surface, then the paper and OPC drum surface is adhered.
Paper is pressed against the surface of the OPC drum, then conveyed by the transfer roller
from behind. The toner and positive electrical load (that is reverse with the toner) is applied,
then the toner image is transferred to the paper.
When the power source applies powerful positive power on the transfer roller, the positive
electrical load induced by the transfer roller is transferred to the paper surface at the
contact point between the transfer roller and paper. The negative electrical load toner is
then sucked from the OPC drum surface on to the paper surface.
OPC drum
Paper
Transfer roller
Rev. 125 /
Conveyance belt
Power
supply
unit
(6)Fuser
The toner image transferred on the paper is fused on the paper by heat and pressure when
the paper passes through the heat roller and backup roller.
The Teflon coated heat roller is heated by a 800W or 350W internal halogen lamp, and
backup roller is heated by a 50W internal halogen lamp. The fuser temperature is controlled
according to the sum of the temperature that is not contacted with the thermistor ground
against the heat roller surface and the temperature that is detected with the thermistor
ground on the backup roller surface. There is also a thermostat for safety purposes. When
the heat roller temperature rises above a certain temperature, the thermostat opens and
shuts down the power supplied to the heater. The backup roller unit is pressed against the
heater with a press spring on both sides.
Thermostat
Thermistor
Paper
Backup roller
Backup roller unit
Fuser belt
Thermistor
Thermostat
Heat roller
Pat
(7)Cleaning
The cleaning blade scrapes off residual toner on the OPC drum after the toner is transferred to the paper, then the disposal toner of the disposal toner box is collected at the
rear.
(8)Cleaning
The cleaning blade scrapes off residual toner on the transfer belt then collects is in the
disposal toner box of the transfer belt unit.
Cleaning braid
Disposal Toner Box
Rev. 126 /
2.4.2 Paper Processing Mechanism
Figure 2-5 illustrates how the paper transfers through the AR-C360P.
Face down stacker
Discharge roller
Discharge roller
Backup roller
Fuser assembly
Heat roller
Cassette 1
Cassette 2
Cassette 3
Low-pressure
power supply
Belt unit
Head x4
High-pressure
power supply
Unit x4
Regist roller Assy (B)
Hopping roller
Multipurpose tray
Cleaning blade
Regist roller Assy (A)
Transfer roller
Feed roller
Cassette 4
Cassette 5
Figure 2-5 Paper Path
Rev. 127 /
(1)Paper Supplied from the 1st Tray
1.Paper proceeds when the paper supply motor turns (CCW) and the paper supply
clutch is connected, until the IN1 sensor turns ON.
2.When the IN1 sensor is turned ON, a certain volume of paper is further transported
until it is against the 1st resist roller. (this corrects paper skew)
3.The paper is transported to the transport belt when the electromagnetic clutch which
delivers power that the register strike motor is turning (CW) and the thrust reliance
of a paper is completed to the 1st register strike roller is connected.
2nd regist roller
Write sensor
IN2 sensor
Middle transport roller
The clutch of
electromagnetism
Pickup roller
Feed motor
Feed roller
Paper
The clutch of
electromagnetism
Feed sensor
Retard roller
Figure 2-6
1st regist roller
IN1 sensor
Regist motor
Rev. 128 /
(2)Paper Supplied from the Option Tray
1.Paper proceeds when the paper supply motor turns (CCW) and the paper supply
clutch is connected, until the IN sensor of the top tray to supply the paper, turns ON.
2.When the IN sensor is turned ON, a certain volume of paper is further transported
against the regist roller. (this corrects paper skew)
3.The paper is conveyed to the AR-C360P when the electromagnetic clutch which delivers
power that the register strike motor is turning (CW) and the thrust reliance of a paper
is completed to the 1st register strike roller is connected.
electromagnetism
Regist motor
The clutch of
electromagnetism
The clutch of
1st Regist roller
IN1 sensor
Regist roller
Upper tray
Option paper tray
IN sensor
Pickup roller
Feed motor
Feed roller
Retard roller
Feed sensor
Regist motor
Figure 2-7
Rev. 129 /
(3)Paper Supplied from MPT
1.In the usual case, sheet receiving is depressed by the arm for rise and fall at a home
position.
2.When a regist motor rotates in the direction of (b), the arm for rise and fall drives
and sheet receiving is rotated. The paper on sheet receiving goes up to the position
where a lift rise sensor is turned on, and feeding is attained because the arm for rise
and fall goes up.
3.The hopping motor is shared with the tray and MPT feeding uses the inversion of
tray feeding.
If a hopping motor reverse-rotates, a pickup roller and a feed roller will drive and a
paper will be sent out.
4.After an entrance sensor (2) is turned on by the paper tip, a paper is sent by
specification length. A paper will stop, if the tip reaches the 2nd register strike roller
Assy.
5.A regist motor rotates in the direction of (a) simultaneously, and a paper is conveyed
with the 2nd regist roller Assy. A hopping motor is rotated until a paper arrives at
the position of the image drum cartridge (black).
6.A hopping motor is rebooted, in order to make paper feed to the following paper, when
an after the end escapes from the hopping sensor.
7.When operation of 4 to 6 is repeated and a lift rise sensor turns off, a regist motor
is rotated in the direction of (b), and the arm for rise and fall is driven, and it goes
up until a lift rise sensor turns on the paper on sheet receipt.
8.After the completion of paper sending operation, when a lift rise sensor detects off,
a regist motor is rotated in the direction of (b), and sheet receiving is returned to a
home position by dropping the arm for rise and fall.
Rev. 130 /
Feed roller
Entrance sensor (2)
Write sensor
2nd Regist roller Assy (B)
The clutch gear of
electromagnetism (2)
Hopping sensor
Retard roller
Pickup roller
Lift up sensor
Paper existence sensor
Paper
Paper existence sensor
Middle transport roller
Hopping motor drive
a
Regist motor drive
b
Figure 2-8
Rev. 131 /
(4)Conveyor Belt
1.The conveyor belt motor drives the conveyor belt when turning in the direction of the
arrow (a). The belt unit consists of one conveyor roller that is directly under the drum
for each color, with the conveyor belt in between the drum.
When a specified voltage is applied, the conveyor belt and conveyor roller transfers
the toner image on the drum for each color, then feeds the paper on the conveyor
belt to the fuser unit.
Drum
Conveyor belt
KY MC
Transfer roller
Transfer belt motor
Figure 2-9
Rev. 132 /
(5)ID Unit Up/Down Operations
1.The C-ID motor drives the ID unit up and down.
2.Figure 2-10-a indicates ID unit operations during color printing. When the C-ID motor
rotates (CCW), the lift uplink slides to the left, and as indicated in Figure 2-10-a, each
ID unit moves DOWN. The printer is now ready for color printing.
3.Figure 2-10-b indicates the ID unit operations during monochrome printing. When the
C-ID motor rotates (CW), the lift uplink slides to the right, and as indicated in Figure
2-10-b, all units other than the K-ID moves UP. The printer is now ready for blackand-white printing.
ID Unit Operations During Color Printing
C-ID Unit down
M-ID Unit down
Y-ID Unit down
K-ID Unit down
Lift uplink
C-ID UnitM-ID Unit
C-ID Motor
(CCW)
Figure 2-10-a
ID Unit Operations During Monochrome Printing
C-ID Unit lift up
M-ID Unit lift up
Y-ID Unit lift up
K-ID Unit down
C-ID UnitM-ID Unit
Y-ID Unit
Y-ID Unit
K-ID Unit
K-ID Unit
Lift uplink
C-ID Motor
(CW)
Figure 2-10-b
Rev. 133 /
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