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Konica Minolta DI850 UM

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Comments to date: 12. Page 1 of 1. Average Rating:
columbo 9:44pm on Sunday, October 10th, 2010 
Great Picture When it Works! This lense would be great if it would only stop breaking. I have had the lense for almost a year and a half. Works well for the money. I think the lens is good for the money. I have had to adjust my autofocus by a few + numbers on my Pentax K-7.
hasmik1 10:14pm on Sunday, October 3rd, 2010 
Good len with this price. especially when you take a pic within 70-200 and the quality is almost the same constant focus. The speed of focus is slow.
tmajdrake 10:48am on Tuesday, September 7th, 2010 
Great quality for a small price Bought it for Pentax to take long distance and macro photos- extremely good quality for reasonable price. sigma 70-300mm lens Product arrived in good time and having tried the lens I have found it most satisfactory and would recommend this product to all a...
David77 1:28am on Monday, July 19th, 2010 
I bought this lens for a family member who has just upgraded to a digital SLR on the strength of my 8 years experience with an earlier version of this...
berniebaby 5:33pm on Thursday, July 15th, 2010 
This Sigma lens is a good entry level telezoom lens. The macro function make a big plus to this product. The picture is sharp. Aperture is acceptable. Good len with this price. especially when you take a pic within 70-200 and the quality is almost the same constant focus. The speed of focus is slow. by far the best telephoto lens for my sony dslr. Sharp pictures however low lighting is problematic. otherwise, this lens cant be beat for the price.
mraph 7:01pm on Wednesday, July 7th, 2010 
WYSIWYP - What You See Is What You Paid In past time, I owned a Canon USM Telephoto lens, but I lost it. So I had to look for a Replacement lens. Worked for 10 minutes, then AF died This item arrived with the lens cap not properly attached. Was on crooked. That was the first concern I had.
villagrad 5:53am on Friday, June 11th, 2010 
I bought this as my first telephoto lens for my Canon XTi (400d) and while it takes pretty good pix.
donsher 9:55am on Sunday, May 30th, 2010 
best buy you can get and its really good to learn from. One a superb lens! Not to noisy and very quick at focusing even at 300mm. It is possible to take photos at 300mm hand held.
SoMitra 7:47pm on Tuesday, May 25th, 2010 
Very practical purchase of this item to do the task at hand. Price Its a bit slow so I shoot manual focus a bunch but nothing serious. i am saving some money to buy canon lens. It is enexpensive but useless. It take picture all blur....
ratbagradio 4:23pm on Friday, April 23rd, 2010 
I bought this lens with a specific purpose in mind - photographing model aircraft in flight.
cyberkoa 7:08pm on Saturday, April 10th, 2010 
im satisfied with the result, Last year im planning to have a zoom lens for my nikon D60.Im choosing between Tamron and Sigma which I chosen the last.
D023604 11:45am on Tuesday, March 23rd, 2010 
I purchased this lens for use on my 5D MK11 and my 7D. Sharpness at the short end is good but above 200mm it is poor on both my camera bodies.

Comments posted on www.ps2netdrivers.net are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.

 

Documents

doc0

CAUTION: Temperature and Humidity
Do not place the copier in a place exposed to direct sunlight or near a heat source such as a heater. A risk of degradation in copier performance or deformation exists. Do not place the copier in a place exposed to cool wind. Recommended temperature and humidity are as follows: Temperature: 10C to 30C 50F to 86F Humidity: 10% to 80% (no dew condensation) Avoid other environments as much as possible.

CAUTION: Ventilation

Do not place the copier in a place where there is much dust, cigarette smoke, or ammonia gas. Place the copier in a well ventilated place to prevent machine problems and image faults.
The copier generates ozone gas during operation, but it is not sufficient to be harmful to the human body. If a bad smell of ozone is present in the following cases, ventilate the room. a. When the copier is used in a poorly ventilated room b. When taking a lot of copies c. When using multiple copiers at the same time

CAUTION: Vibration

When installing the copier, read the Installation Guide thoroughly. Be sure to install the copier in a level and sturdy place. Constant vibration will cause problems. Be sure to lock the caster stoppers. In the case of an earthquake and so on, the copier may slide, leading to a injury.
CAUTION: Inspection before Servicing
Before conducting an inspection, read all relevant documentation (Service Manual, technical notices, etc.) and proceed with the inspection following the prescribed procedure, using only the prescribed tools. Do not make any adjustment not described in the documentation. If the prescribed procedure or tool is not used, the copier may break and a risk of injury or fire exists. Before conducting an inspection, be sure to disconnect the power plugs from the copier and options. When the power plug is inserted in the wall outlet, some units are still powered even if the POWER switch is turned OFF. A risk of electric shock exists.
The area around the fixing unit is hot. You may get burnt.
DANGER: Work Performed with the Copier Powered
Take every care when making adjustments or performing an operation check with the copier powered. If you make adjustments or perform an operation check with the external cover detached, you may touch live or high-voltage parts or you may be caught in moving gears or the timing belt, leading to a risk of injury.
Take every care when servicing with the external cover detached. High-voltage exists around the drum unit. A risk of electric shock exists.
WARNING: Safety Checkpoints
Check the exterior and frame for edges, burrs, and other damages. Personal injuries may result. Do not allow any metal parts such as clips, staples, and screws to fall into the copier. They can short internal circuits and cause electric shock or fire. Check wiring for squeezing and any other damage. Current can leak, leading to a risk of electric shock or fire. When disconnecting connectors, grasp the connector, not the cable. (Specifically, connectors of the AC line and high-voltage parts) Current can leak, leading to a risk of electric shock or fire. Carefully remove all toner remnants and dust from electrical parts and electrode units such as a charging corona unit. Current can leak, leading to a risk of copier trouble or fire.

Check high-voltage cables and sheaths for any damage. Current can leak, leading to a risk of electric shock or fire.
Check electrode units such as a charging corona unit for deterioration and sign of leakage. Current can leak, leading to a risk of trouble or fire. Before disassembling or adjusting the write unit incorporating a laser, make sure that the power cord has been disconnected. The laser light can enter your eye, leading to a risk of loss of eyesight. Do not remove the cover of the write unit. Do not supply power with the write unit shifted from the specified mounting position. The laser light can enter your eye, leading to a risk of loss of eyesight. When replacing a lithium battery, replace it with a new lithium battery specified in the Parts Guide Manual. Dispose of the used lithium battery using the method specified by local authority. Improper replacement can cause explosion.
After replacing a part to which AC voltage is applied (e.g., optical lamp and fixing lamp), be sure to check the installation state. A risk of fire exists. Check the interlock switch and actuator for loosening and check whether the interlock functions properly. If the interlock does not function, you may receive an electric shock or be injured when you insert your hand in the copier (e.g., for clearing paper jam).
Make sure the wiring cannot come into contact with sharp edges, burrs, or other pointed parts. Current can leak, leading to a risk of electric shock or fire.
Make sure that all screws, components, wiring, connectors, etc. that were removed for safety check and maintenance have been reinstalled in the original location. (Pay special attention to forgotten connectors, pinched cables, forgotten screws, etc.) A risk of copier trouble, electric shock, and fire exists.
HANDLING OF MATERIALS FOR SERVICING
Unplug the power cord from the wall outlet. Drum cleaner (isopropyl alcohol) and roller cleaner (acetone-based) are highly flammable and must be handled with care. A risk of fire exists.
Do not replace the cover or turn the copier ON before any solvent remnants on the cleaned parts have fully evaporated. A risk of fire exists. Use only a small amount of cleaner at a time and take care not to spill any liquid. If this happens, immediately wipe it off. A risk of fire exists.
When using any solvent, ventilate the room well. Breathing large quantities of organic solvents can lead to discomfort.

SAFETY INFORMATION

DANGER: HANDLING OF MATERIALS FOR SERVICING
Toner and developer are not harmful substances, but care must be taken not to breathe excessive amounts or let the substances come into contact with eyes, etc. It may be stimulative. If the substances get in the eye, rinse with plenty of water immediately. When symptoms are noticeable, consult a physician.

Protection by CBR1 and CBR2 (circuit breakers) CBR1 interrupt the AC line instantaneously when an excessive current flows due to a short in the AC line. CAUTION: The CBR1 and CBR2 functions must not be deactivated under any circumstances. CAUTION: Do not change the gap between the roller and TH1. When repl-acing TH1, check the specified mounting dimensions. The RL1 function must not be deactivated under any circum-stances.
SAFETY INFORMATION 2. Protection by the hardware circuit The output voltages from TH1 and TH2 (fixing temperature sensor 2), TH3 (fixing temperature sensor 3), and TH4 (fixing temperature sensor 4) are compared with the abnormality judgement reference value in the comparator circuit. If the output voltage from TH1, TH2, TH3, or TH4 exceeds the reference value, L2, L4, and RL1 are turned off in hardware means. CAUTION: Periodically check the TH2 and TH4 faces contacting the roller, and replace TH2 and/or TH4 if any abnormality is detected. Do not change the gap between the roller and each sensor TH2 and TH4. When replacing TH2 or TH4, check the specified mounting dimensions. The RL1 function must not be deactivated under any circum-stances. 3. Protection by TS1 (thermostat (upper)) and TS2 (thermostat (lower)) TS1 is turned off when the temperature of the fixing roller (upper) exceeds the specified value, and TS2 is turned off when the temperature of the heating (upper) roller exceeds the specified value, thus interrupting the power to L2 and L4 directly. CAUTION: Do not use any other electrical conductor in place of TS1 and TS2.
INDICATION OF WARNING ON THE MACHINE
Caution labels shown below are attached in some areas on/in the machine areas. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and shock hazards.
CAUTION ATTENTION VORSICHT PRECAUCION ATTENZIONE
WARNING DANGER WARNUNG ADVERTENCIA
(Both sides of the fixing unit)

AVVERTIMENTO

CAUTION
The fixing unit is very hot. To avoid getting burned DO NOT TOUCH.

WARNING

<PK-3 Puncher> <ZK-2 Puncher with Z-folding>

1 OUTLINE

OUTLINE

OUTLINE OF SYSTEM

Expansion memory unit [M64-1 / M128-1]

Puncher [PK-3]

Paper exit tray LCT [C-403] Finisher [FN-115]
Cover Inserter [Cover Inserter C]

Finisher [FN-7]

Puncher with Z-folding [ZK-2] LCT [C-404] Printer Controller

OUTLINE 1 OUTLINE

PRODUCT SPECIFICATIONS

[1] Type

Installation Type: Console type (floor-mounted type) Copying method: Indirect electrostatic method Document tray type: Fixed Photosensitive material: OPC Sensitizing method: Laser writing Paper feed trays: Three stacked trays (two for 500 sheets of 80 g/m2 or 20lbs. paper; one for 1000 sheets of 80 g/m2 or 20lbs. paper) A by-pass tray for various paper sizes (150 sheets of 80 g/m or 20 lbs. paper) LCT (4000 sheets of 80 g/m2 or 20 lbs. paper)*1 *1: Optional
Zoom magnifications: x0.25 to x4.00 (600 dpi, in 1% steps) Vertical magnifications: x0.25 to x4.00 (600 dpi, in 1% steps) Horizontal magnifications: x0.25 to x4.00 (600 dpi, in 1% steps) Warm-up time: Less than 6 minutes*2 *2: 6 minutes is the machine for the 230VAC specification. Warm-up time differs depending on the Power source (voltage). First copy out time: Mode Manual A4, 8.5x11 3.3 seconds or less
*Straight paper ejection with the copied image facing up, platen mode, life size, paper feed from tray 1 Continuous copy speed (life size, copies/ min): Size A4, 8.5x11 cpm 85

[2] Functions

Applicable document types: Sheets, book, solid object Document size: A3 (11x17) max. Copy paper size: Metric area A3 to A5, 11x17 to 8.5 x11, F4 Inch Area 11x17 to 8.5 x5.5, A3 to B5R, F4 Wide paper (max. 314x445mm)*2 *2: When using C404 Paper size for ADU paper passage: Max. 314 x 459 mm to A5 or 8.5 x 5.5 min. Magnifications Fixed magnifications: Metric area x1.00, x2.00, x1.41, x1.22, x1.15, x0.86, x0.82, x0.71, x0.50 Inch Area x1.00, x4.00, x2.00, x1.55, x1.29, x0.77, x0.65, x0.50 Special ratio magnifications: 3 modes
Continuous copy count: 1 to 9999 Copy density selections: AE, manual Arbitrary density (2 modes) E-RDH memory capacity: standard 128 MB maximum 512 MB
OUTLINE 1 OUTLINE 35.5"
[3] Applicable Copy Paper
Plain paper: High quality paper 60 to 90 g/m2 or 17 to 24 lbs Special paper: High quality paper 50 to 59 g/m2 , 91 to 170 g/m2 or 13 to 16 lbs, 24 to 40 Ibs Bypass feed only: Label paper OHP Film Blueprint master paper Tray feed only: High quality paper 171 to 200 g/m2 or 40 to 45 lbs ADU paper passage: High quality paper 60 to 200 g/m2 or 17 to 45 lbs

Photo sensor LED Relationships between sensors and original sizes are as follows:
Sensor Paper size B5R B5 B4 A4R A4 A3 8.5 x 11R 8.5 x 11 8.5 x x 17 Min. size PS62 PS63 PS64 PS65 PS66 PS67 PS68

ON OFF

[7] AE Control
(2) Non-image area erasure mode Entire original area detected by forward scanning. (3) DF mode The image at the leading edge of the original is read when the START button is pressed. The read data is used to measure the image density on the original. <AE sampling area> (1) Main scanning direction 10-mm area inside the original detected by APS (2) Sub scanning direction Range between 2mm to 7.3mm from the leading edge of the original.
The CCD sensor detects the image density on an original during AE scanning to select the optimum copy gamma correction curve. AE processing is controlled by the ICB (image control board).
a. AE detection (1) Platen mode The image density on an original is measured while the exposure unit moves from the home position to the leading edge of the original after depression of the START button. <AE sampling area> (1) Normal copy 10mm inside perimeter of original size detected by APS.

WRITE UNIT

Cylindrical lens UNIT EXPLANATION Compression prism Semiconductor laser LD1 Collimator lens unit Beam combining prism CY1 lens 2nd mirror f lens 2 Index sensor f lens 1 OPC drum Polygon Cooling Fan Index sensor board Polygon mirror Cylindrical lens 2 3rd mirror

Laser driver board LD2

2nd mirror f lens 2

f lens 1

Collimator lens unit 2 Beam combining prism
Collimator lens unit 1 Laser driver board LD1
*1 Mechanism Scan Method Polygon mirror Rotational speed: 24,803.1 rpm (400 dpi) 37,204.7 rpm (600 dpi) Laser diodes (two) (Output: Max. 20 mW) Index sensor Fine adjustment prism Beam combining prism Polygon mirror Glass cover Index mirror Semiconductor laser LD2 CY2 lens
Light source *2 *3 Positioning Laser beam combining

3rd mirror

Path of laser light The light output from semiconductor laser is radiated onto the OPC drum via the collimator lens, compression prism, fine adjustment prism, beam combining prism, cylindrical lens 1, polygon mirror, f lens 1, f lens 2, second mirror, cylindrical lens 2, and third mirror.

DRUM UNIT

Charging corona unit 2 UNIT EXPLANATION Developing unit
Separation claws Cleaning/toner recycle unit Charging corona unit PCL Developing unit
Separation claw solenoid (SD4)
Cleaning/toner recycle unit TSL Transfer and separation corona unit
Mechanism Carriage support PCL/TSL *1 *2 Auxiliary separation Conveyance assistance LED Separation claws Ratchet wheel Method Fixed rail
nism slides the separation claws about 5 mm back and forth in parallel with the drum surface. Separation claw solenoid (SD4) Separation claw
The drum unit is an integral assembly consisting of a drum, charging corona unit, developing unit, cleaning/ toner recycle unit, PCL, and separation claws. *1 Auxiliary separation To prevent paper jamming, three separation claws are used to separate paper from the drum forcibly. These separation claws are pressed against the drum or detached from it by turning ON/OFF the separation claw solenoid (SD4). To prevent a specific part of image copied paper from being stained and to prevent the drum from being scratched, the swing mecha2-E-1
Conveyance assistance The thick paper conveyance ability has been improved by the use of ratchets.
[3] Separation Claw Control
[4] Paper Guide Plate Control

GP CONT

24VDC SD4 DRIVE

M2CONT M2EM

ADUSDB

MS2 MS1 24VDC PGND

DCPS2 HV2
The separation claw is driven by SD4 (separation claw). The vibration of the separation claw is put in by M2 (drum). SD4 is controlled directly by PRCB (printer control board).
a. Separation claw ON/OFF control SD4 is a pull-type solenoid powered by 24 VDC. It turns ON to press separation claws against the drum to help image copied paper separate. (1) SD4 operation timing SD4 turns ON after a lapse of specified time from turning ON of PS45 (leading edge detection) in the second paper feed section. It turns OFF after a lapse of the time set by the PRCB timer. b. Separation claw swing control Separation claws are swung by M2 (drum) via the cam mechanism.
To prevent toner from adhering to the paper guide plate, a constant voltage is applied to the paper guide plate. This voltage is supplied from HV2 (high voltage unit 2) and is controlled by the serial data sent from the PRCB (printer control board) via the ADUSDB (ADU stand drive board). When the front door of this machine opens or closes, MS1 (interlock 1) or MS2 (interlock 2) operates to interrupt the DC power supply to HV2, stopping the voltage application to the paper guide plate.

2. Flow of developer

The developer inside the developing unit is supplied to the developing sleeve by the agitator wheel, and maintained at a constant thickness by the developing regulation plate (bristle height regulation plate). The developer remaining on the developing sleeve is returned to the agitator screws.
[3] M3 (Developing Unit Drive) Control
[4] Developing Bias Control
24VDC 5VDC SGND B CONT B SHIFT B FB

MS1 BIAS

M3 CONT M3 CLK M3 EM
M3 (developing) is controlled by the PRCB (printer control board) and the motor drive power is supplied by DCPS2 (DC power supply unit 2). When the front left or right door of this machine opens or closes, MS1 (interlock 1) or MS2 (interlock 2) operates to interrupt the DC power supply to M3, stopping the voltage supply to the developing sleeve.

24VDC 24VDC PGND

MS2 MS1
M3 which is the 24V driven DC motor drives the developing sleeve and agitator. M3 equipped with speed control circuit send the rotation error signal to PRCB when PLL lock is released longer than the specified time period. M3 starts after the specified time interval from the start switch is ON, and stops after the specified time interval from the charging wire unit stops charging.
The developing bias is controlled by PRCB (printer control board) via the HV1 (high voltage unit 1). When the front left or right door of this machine opens or closes, MS1 (interlock 1) or MS2 (interlock 2) operates to interrupt the DC power supply to HV1, stopping the voltage supply to the developing sleeve.
The developing bias voltage is applied to the developing sleeve based on the M2 (drum) rotation state signal.
a. Input signals (1) M3 EM (M3 to PRCB) M3 fault detection signal. [H]: Abnormal rotation (when PLL is unlocked for more than 1.5 seconds) [L]: Normal rotation b. Output signals (1) M3 CONT (PRCB to M3) M3 drive control signal. [L]: M3 ON [H]: M3 OFF
a. Input signals (1) B FB (HV1 to PRCB) Developing bias voltage feedback signal. This signal monitors the developing bias voltage. It is an 0V to 5V analog signal corresponding to the output level. b. Output signals (1) B CONT (PRCB to HV1) Developing bias output ON/OFF control signal. [L]: Developing bias ON [H]: Developing bias OFF (2) B SHIFT (PRCB to HV1) Developing bias output level control signal. The developing bias output level is controlled according to the duty ratio of the pulse (PWM) signal sent from the PRCB. B SHIFT duty 20% to 80%

[7] Gradation Correction Control
5VDC /Dmax LED Vref LED CONT

SIG/MONI

Gradation correction control is performed by the TCSB (toner control sensor board), M2 (drum), M3 (developing), and so on. These parts are controlled by the PRCB (printer control board).
(2) Timing a) When the fixing temperature is lower than 50C at power ON. b) At the end of job after every 20,000 copies.
The gradation characteristics of the toner density versus exposure amount at the image forming section (drum area) are detected to obtain a linear relation between the image density on a document and the copying image density (toner density). (1) Method Exposure is performed with the laser PWM varied in several steps, and development is performed at the toner transfer sleeve speed obtained by Dmax correction. Next, each density is read by sensor (PD2) on the TCSB to detect the gradation characteristics of image density. The gradation characteristics obtained here are used as the values for correcting the laser exposure amount.
a. PRCB Input signals (1) SIG/MONI (TCSB to PRCB) Output voltage from the sensor (PD2) on the TCSB. This signal monitors the light reflected by the drum surface (without toner). The voltage applied to the gradation detection LED is corrected by /Dmax LED Vref so that the output voltage becomes 4.5V (calibration). Reference voltage: 4.5V <Timing> Before gradation correction.
5VDC /Dmax LED Vref LED CONT SIG/MONI
Dot diameter is detected by TCSB (toner control sensor board) and controlled by PRCB (printer control board).
Dot diameter correction is performed to prevent the fluctuation of 1 dot laser beam in diameter due to a soil in the writing unit or a change of developing ability. (1) Method Creates several same condensation dot pattern patches changing the laser power and reads them with sensor (PD2). Uses the laser power where the sensor output reaches reference voltage as MPC. (2) Timing a) At the end of job after every 20,000 copies.
b. PRCB Output signals (1) LED CONT, CONT (PRCB to TCSB) ON/OFF control signal for gradation detection LED. [L]: LED ON [H]: LED OFF (2) Dmax LED Vref, Vref (PRCB to TCSB) Power supply line to the LED on the TCSB. The voltage applied to the LED is adjusted so that the MONI signal becomes 4.5V.

Drum cleaning Two cleaning blades are installed in the cleaning section. When the blade motor (M14) rotates, the blade release arm is pressed down. At the same time, the cleaning blade drive shaft with two cleaning blades 1 and 2 is turned by the wire wound around the shaft, thereby switching between blades 1 and 2 automatically, increasing the usable life of the blades. Toner collection Toner removed by the cleaning blade is collected by the toner guide brush to be reused.
Blade release arm Blade 1 Blade 2

[3] M14 (Blade) Control

Blade Position Sensor Pressing CW/ Slight CW/ Switching CCW pressing CCW

5VDC PS30 SGND

OFF ON

OFF OFF

ON or OFF* OFF

M14 DRIVE 1 M14 DRIVE 2

*Note: CW/CCW indicate the M14 rotating direction for pressing, slight pressing, and switching. The sensor logic for slight pressing position is different between CW and CCW rotation. CCW: ON CW: OFF a. Blade auto switching control This unit uses two blades with M14 rotating to automatically replace blades. During automatic blade replacement, M2 (drum), M3 (developing), developing bias, guide plate voltage, and PCL are turned ON, toner is adhered to the drum, and then the blade cleans it to prevent blade peeling. <Timing> a) At the end of job after every 20,000 copies. *Changeable with 25 mode DIPSW. Blade setting mode Blade setting mode is available in 36 mode as a task after blade replacement during maintenance. Blade setting mode adheres toner on drum as in blade auto replacement control and then the blade cleans toner to prevent blade peeling. Black stripe creation control In order to improve durability of the blade (stabilize load, prevent paper dust crushing), a black stripe toner is adhered on drum once every five copies and then cleaned. *Changeable with 25 mode DIPSW.
M14 (blade) is a 24V DC driven motor and drives the cleaning blades. By M14, the cleaning blade contacts on the drum surface slight pressing or pressing to clean the drum surface. These two blades are automatically switched by M14. M14 is controlled directly by PRCB (printer control board). Related signals are PS30 (blade 1) and PS31 (blade 2).
M14 turns ON/OFF in synchronized with ON/ OFF of M2 (drum). The blade is controlled (pressing, slight pressing, and switching) by PS30 and PS31 detecting the blade position, and M14 rotating forward and backward. The following table shows the relationship between PS30/PS31 and blade position.
a. Input signal (1) PS30 (PS30 to PRCB) Blade position detection signal 1. (2) PS31 (PS31 to PRCB) Blade position detection signal 2. b. Output signal (1) M14 DRIVE 1,2 (PRCB to M14) M14 drive control signal. 2-I-2

a. Input signals (1) PS38 (PS38 to PRCB) Paper size detection switch ON/OFF signal. (2) PS39 (PS39 to PRCB) Paper size detection switch ON/OFF signal. (3) VR3 (VR3 to PRCB) Paper width detection signal.

BY-PASS TRAY

By-pass feed roller By-pass paper feed roller Paper feed swivel plate
Pick up solenoid (SD11) 2 UNIT EXPLANATION
By-pass feed tray By-pass double feed prevention roller By-pass feed roller
Mechanism *1 First paper feed Method Swivel roller Pick up solenoid (SD11) Paper up/down plate Up/down motor (M22) (by-pass tray) Double feed prevention Torque limiter No paper detection *3 Paper size detection Photosensor Paper size detection PS (PS55/PS56)
Paper lift-up When paper is set in the bypass tray, the up/ down motor (by-pass) (M22) drives the paper up/ down plate via gears. Paper is automatically pushed up to the paper feed position.

Paper lift-up

Paper up/down plate Up/down motor (by-pass) (M22)
By-pass paper feed roller To keep constant contact pressure on the paper by the paper feed roller at the time of paper pickup, the weight of the paper feed roller itself is used. The pick up solenoid (SD11) moves the paper feed swivel plate down (when the roller is rotating) so that the paper feed roller mounted on the plate falls down to touch the paper as well. Then, the paper feed roller picks up a paper and feeds it toward the paper conveyance section. The first paper feed solenoid moves the paper feed swivel plate down only when paper is to be fed. Otherwise, it releases contact.
Paper size detection The paper size is automatically detected by the following three sensors: Lateral: Paper size detection VR (VR4) Longitudinal: Paper size PS 1/2 (PS55/PS56)

Paper size PS1 (PS55)

24VDC SD11 CONT 24VDC 24VDC M6 DRIVE A M6 DRIVE A M6 DRIVE B M6 DRIVE B 24VDC 24VDC PGND PGND

By-pass tray

Paper size detection VR (VR4)

Paper size PS2 (PS56)

The 1st paper feed from the by-pass tray takes place as the result of the transmission of the drive force from M6 (loop roller) to the paper feed roller. SD11 (pick up (bypass tray)) moves up and releases the paper feed roller contacting to the paper after the roller picked up and fed the first paper to the feed roller side to facilitate paper feeding. The above operations are controlled by the PRCB (printer control board).

Paper reverse/exit section paper conveyance drive Paper reverse/exit motor (M5) drive *8 Paper reverse/exit section jam removal mechanism Jam removal by opening the paper reverse/exit section jam access guide plate Jam removal by opening the paper reverse/exit section Paper reverse/exit roller rotation knob *9 ADU paper feed ADU reversed paper conveyance path selection ADU paper conveyance *10 ADU pre-registration mechanism ADU paper ejection ADU paper conveyance drive Nonstack paper feed Automatically guided according to paper guide shape ADU reversal roller (1) ADU horizontal transport rollers (2) Pre-registration roller Pre-registration loop roller ADU exit roller Loop roller motor (M6), ADU reverse motor (M7), ADU conveyance motor (M8), Transfer motor (M9), Registration motor (M12) Jam removal by opening the open/close guide A Jam removal by opening the open/close guide B Jam indication board
*11 ADU carriage jam removal mechanism *12 ADU carriage jam indication
Registration loop jam handler
Second paper feed auxiliary mechanism The distance between the registration roller and the transfer and separation corona unit of this machine is made long to ensure image position correction operation. To assist paper conveyance between the registration roller and the image transfer and separation corona unit, a pretransfer roller is provided just before the transfer and separation corona unit.
Pre-transfer section jam handler Registration roller rotation knob *4 Paper conveyance unit thick paper conveyance auxiliary mechanism To facilitate feeding the thick paper fed from the transfer and separation corona unit, thick paper conveyance rollers are provided. The installation positions of thick paper conveyance rollers are fixed and they are also used to assist conveyance of paper other than thick paper. Conveyance belt
Pre-transfer section roller Transfer/separation corona unit Registration roller
Thick paper conveyance roller
Second paper feed paper mis-centering correction PS1 (paper mis-centering) is mounted at the exit of the registration roller to detect mis-centering or inclination of paper fed from the second paper feed unit. The image processor uses the miscentering information detected by PS1 to correct the image write position, thus shifting or rotating the image write position on the mis-centered or inclined copy paper in order to match the document (scanned image) position with the copy paper position.

FM10 DRIVE FM10 EM PGND

FM11 DRIVE FM10 EM PGND

FM5/FM8 DRIVE PGND

FM3/FM4 FEM

FM3 DRIVE PGND

FM4 DRIVE PGND

FM6 DRIVE PGND

FM12 DRIVE PGND

FM9 DRIVE PGND

FM6 FEM

FM5 FEM

FM9 FEM
a. PRCB input signals (1) FM3 EM (FM3 to PRCB) FM3 fault detection signal. [H]: Fault is detected (2) FM4 EM (FM4 to PRCB) FM4 fault detection signal. [H]: Fault is detected (3) FM5 EM (FM5 to PRCB) FM5 fault detection signal. [H]: Fault is detected (4) FM6 EM (FM6 to PRCB) FM6 fault detection signal. [H]: Fault is detected (5) FM6 FEM (ACDB to PRCB) FM6s 24 V DC power detection signal. [H]: 24 V power OFF (6) FM7 EM (FM7 to SCDB to PRCB) FM7 fault detection signal. [H]: Fault is detected (7) FM8 EM (FM8 to PRCB) FM8 fault detection signal. [H]: Fault is detected (8) FM9 EM (FM9 to PRCB) FM9 fault detection signal. [H]: Fault is detected (9) FM12 EM (FM12 to PRCB) FM12 fault detection signal. [H]: Fault is detected (10) FM3/4 FEM (ACDB to PRCB) FM3, FM4s 24V DC power detection signal. [H]: 24 V power OFF (11) FM9 FEM (ACDB to PRCB) FM9s 24V DC power detection signal. [H]: 24 V power OFF (12) FM5 FEM (ACDB to PRCB) FM5, FM8, FM9s 24V DC power detection signal. [H]: 24 V power OFF b. PRCB output signals (1) FM3 CONT (PRCB to ACDB) FM3 ON/OFF control signal. [L]: FM3 ON [H]: FM3 OFF (2) FM3 H/L (PRCB to FM3) FM3s rotational speed control signal. [L]: Low speed [H]: High speed
(3) FM4 CONT (PRCB to ACDB) FM4 ON/OFF control signal. [L]: FM4 ON [H]: FM4 OFF (4) FM4 H/L (PRCB to FM4) FM4s rotational speed control signal. [L]: Low speed [H]: High speed (5) FM5 CONT (PRCB to ACDB) FM5, FM8 ON/OFF control signal. [L]: FM5, FM8 ON [H]: FM5, FM8 OFF (6) FM5 H/L (PRCB to FM5) FM5s rotational speed control signal. [L]: Low speed [H]: High speed (7) FM6 CONT (PRCB to ACDB) FM6 ON/OFF control signal. [L]: FM6 ON [H]: FM6 OFF (8) FM6 H/L (PRCB to FM6) FM6s rotational speed control signal. [L]: Low speed [H]: High speed (9) FM7 CONT (PRCB to SCDB) FM7 ON/OFF control signal. [L]: FM7 ON [H]: FM7 OFF (10) FM12 CONT (PRCB to ACDB) FM12 ON/OFF control signal. [L]: FM12 ON [H]: FM12 OFF (11) FM9 CONT (PRCB to ACDB) FM9 ON/OFF control signal. [L]: FM9 ON [H]: FM9 OFF c. ADUSDB input signal (1) FM1 EM (FM1 to ADUSDB) FM1 fault detection signal. [L]: Normal [H]: Abnormal (2) FM10 EM (FM10 to ADUSDB) FM10 fault detection signal. [L]: Normal [H]: Abnormal (3) FM11 EM (FM11 to ADUSDB) FM11 fault detection signal. [L]: Normal [H]: Abnormal
d. ADUSDB output signal (1) FM1 DRIVE (ADUSDB to FM1) FM1 ON/OFF control signal. [L]: FM1 ON [H]: FM1 OFF (2) FM10 DRIVE (ADUSDB to FM10) FM10 ON/OFF control signal. [L]: FM10 ON [H]: FM10 OFF (3) FM11 DRIVE (ADUSDB to FM11) FM11 ON/OFF control signal. [L]: FM10 ON [H]: FM10 OFF e. ACDB output signals (1) FM3 DRIVE (ACDB to FM3) FM3 ON/OFF control signal. [L]: FM3 ON [H]: FM3 OFF (2) FM4 DRIVE (ACDB to FM4) FM4 ON/OFF control signal. [L]: FM4 ON [H]: FM4 OFF (3) FM6 DRIVE (ACDB to FM6) FM6 ON/OFF control signal. [L]: FM6 ON [H]: FM6 OFF (4) FM12 DRIVE (ACDB to FM12) FM12 ON/OFF control signal. [L]: FM12 ON [H]: FM12 OFF (5) FM5/FM8 DRIVE (ACDB to FM5, FM8) FM5, FM8 ON/OFF control signal. [L]: FM5, FM8 ON [H]: FM5, FM8 OFF (6) FM9 DRIVE (ACDB to FM9) FM9 ON/OFF control signal. [L]: FM9 ON [H]: FM9 OFF f. PRCB output signal (1) FM5/FM8 DRIVE (PRCB to FM5) FM5 ON/OFF control signal. [L]: FM5 ON [H]: FM5 OFF g. SCDB output signal (1) FM7 DRIVE (OPDB to FM7) FM7 ON/OFF control signal. [L]: FM7 ON [H]: FM7 OFF

 

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