Konica Minolta Tonermodif DI551 650
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Konica Minolta Tonermodif DI551 650
User reviews and opinions
|donhonda||6:45am on Friday, October 8th, 2010|
|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.|
|tryfan||8:11am on Sunday, October 3rd, 2010|
|I bought this as my first telephoto lens for my Canon XTi (400d) and while it takes pretty good pix.|
|Cellin||6:49pm on Tuesday, September 14th, 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. 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.|
|cacao74||9:54am on Friday, August 13th, 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. This lens should come with ear-plugs(!|
|basileios||9:40pm on Monday, August 9th, 2010|
|Great quality for a small price Bought it for Pentax to take long distance and macro photos- extremely good quality for reasonable price.|
|iNot||9:50am on Thursday, July 29th, 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. 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.|
|trailerbum||1:53pm on Tuesday, May 4th, 2010|
|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.|
|fonty||12:51pm on Sunday, April 18th, 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... best buy you can get and its really good to learn from. 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.|
|cmjuettner||6:11am on Sunday, April 18th, 2010|
|Sigma APO 100-300mm F4 EX IF HSM zoom lens optical lens category brand owned Sigma (SIGMA) optical lens The lowest price at ¥ 6,000.|
|Doug Johnson||1:21pm on Sunday, April 11th, 2010|
|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...|
|jmurphyjr||1:33am on Monday, April 5th, 2010|
|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.|
|berndh||10:43pm on Tuesday, March 23rd, 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.|
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.
  
Removing and Reinstalling the Fixing Temperature Sensors 1 and 2..3-O-9 Removing and Reinstalling the Thermostat (TS1)..3-O-11 Removing and Reinstalling the Thermostat (TS2)..3-O-12
SAFETY AND IMPORTANT WARNING ITEMS
Read carefully the Safety and Important Warning Items described below to understand them before doing service work.
Because of possible hazards to an inexperienced person servicing this copier as well as the risk of damage to the copier, Konica Minolta Business Technologies, INC. (hereafter called the KMBT) strongly recommends that all servicing be performed only by KMBT-trained service technicians. Changes may have been made to this copier to improve its performance after this Service Manual was printed. Accordingly, KMBT does not warrant, either explicitly or implicitly, that the information contained in this Service Manual is complete and accurate. The user of this Service Manual must assume all risks of personal injury and/or damage to the copier while servicing the copier for which this Service Manual is intended. Therefore, this Service Manual must be carefully read before doing service work both in the course of technical training and even after that, for performing maintenance and control of the copier properly. Keep this Service Manual also for future service.
In this Service Manual, each of three expressions DANGER, WARNING, and CAUTION is defined as follows together with a symbol mark to be used in a limited meaning. When servicing the copier, the relevant works (disassembling, reassembling, adjustment, repair, maintenance, etc.) need to be conducted with utmost care.
DANGER :Action having a high possibility of suffering death or serious injury WARNING:Action having a possibility of suffering death or serious injury CAUTION :Action having a possibility of suffering a slight wound, medium trouble, and
property damage Symbols used for safety and important warning items are defined as follows:
:Precaution when using the copier. :Prohibition when using the copier. :Direction when using the copier.
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.
DANGER: HANDLING OF SERVICE MATERIALS
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.
Never throw the used cartridge and toner into fire. You may be burned due to dust explosion.
DANGER : HANDLING OF SERVICE MATERIALS
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.
MEASURES TO TAKE IN CASE OF AN ACCIDENT
provide relief to affected persons and to prevent further damage.
1. If an accident has occurred, the distributor who has been notified first must immediately take emergency measures to 2. If a report of a serious accident has been received from a customer, an on-site evaluation must be carried out quickly and KMBT must be notified. 3. To determine the cause of the accident, conditions and materials must be recorded through direct on-site checks, in accordance with instructions issued by KMBT. 4. For reports and measures concerning serious accidents, follow the regulations given in Serious Accident Report/ Follow-up Procedures.
safety can be maintained by the appropriate daily service work conducted by the customer engineer.
1. Safety of users and customer engineers depends highly on accurate maintenance and administration. Therefore, 2. When performing service, each copier on the site must be tested for safety. The customer engineer must verify the safety of parts and ensure appropriate management of the equipment.
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. This copier is certified as a Class 1 laser product under the U.S. Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. Since radiation emitted inside this copier is completely confined within protective housings and external covers, the laser beam cannot escape during any phase of normal user operation.
This machine is provided with the following safety circuits to prevent machine faults from resulting in serious accidents.
Protection by L2, L3 and L4 (fixing heater lamps) overheating prevention circuit
Overall protection circuit L2 and L3 (fixing heater lamps) overheating prevention circuit
These safety circuits are described below to provide the service engineer with a renewed awareness of them in order to prevent servicing errors that may impair their
Overall Protection Circuit
AC driver section
Protection by software
The output voltage from TH1 (fixing temperature sensor 1) is read by the CPU. If this voltage is abnormal, L2 (fixing heater lamp 1), L3 (fixing heater lamp 2), L4 (fixing heater lamp 3) and RL1 (main relay) are turned OFF.
Protection by CBR1 and CBR2 (circuit breakers)
CBR1 and CBR2 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 replacing TH1, check the specified mounting dimensions. The RL1 function must not be deactivated under any circumstances.
Protection by the hardware circuit
The output voltages from TH1 and TH2 (fixing temperature sensors) are compared with the abnormality judgment reference value in the comparator circuit. If the output voltage from TH1 or TH2 exceeds the reference value, L2 (fixing heater lamp 1), L3 (fixing heater lamp 2), L4 (fixing heater lamp 3) and RL1 (main relay) are turned OFF in hardware means.
CAUTION: Periodically check the TH2 face contacting the roller, and replace TH2 if any abnormality is detected. Since TH1 (fixing temperature sensor) face does not contact the roller, check the distance from the roller and the sensor orientation if any abnormality is detected. The RL1 function must not be deactivated under any circumstances. Protection by TS1 (thermostat/U) and TS2 (thermostat/L)
When the temperature of the fixing roller (upper/ lower) exceeds the specified value, TSs are turned OFF, thus interrupting the power to L2 (fixing heater lamp/1), L3 (fixing heater lamp/2), and L4 (fixing heater lamp/3) directly.
CAUTION: Do not use any other electrical conductor in place of TS1 and TS2. Do not change the distance between the roller and TS (thermostat).
Caution labels shown below are attached in some areas on/in the machine. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric shock.
Use care after opening the paper exit outlet. DO NOT put your hand into it; otherwise you may be injured. To avoid injury, DO NOT put your hand on top of the printed sheets. Be sure to hold both sides of the printed sheets when removing them, and DO NOT leave your hand on the printed sheets while the primary (main) tray goes up.
<WRITE UNIT> In the case of the Di551/Di650
In the case of the Di5510/Di7210
<ZK Puncher with Z-folding>
Di551/Di650/Di5510/Di7210 LIST OF DIFFERENCE
LIST OF DIFFERENCE FOR Di551/Di650 AND Di5510/Di7210
Classification Warm-up time Di551 5.5 minutes max.(at 20 C rated voltage) 3.4 seconds or shorter 55 copies (A4) Di650 6.5 minutes max.(at 20 C rated voltage) 3.1 seconds or shorter 65 copies (A4) Diminutes max.(at 20 C rated voltage) 3.4 seconds or shorter 55 copies (A4) Diminutes max.(at 20 C rated voltage) 3.0 seconds or shorter 72 copies (A4) Reason Change of fixing control temperature CPM change CPM change
First copy out time (A4) Continuous copy speed (A4) Consumables Developer Toner Drum
Common to Di551/Di650/Di5510/Di7210
Fixing section External Section Paper Feed Section Write Section Drive Section
280mm/s (standard) 185mm/s (thick paper) 33,070rpm (standard) 21,850rpm (thick paper)
320mm/s (standard) 185mm/s (thick paper) 37,795rpm (standard) 21,850rpm (thick paper)
280mm/s (standard) 172.5mm/s (thick paper) 33,070rpm (standard) 40,748rpm (thick paper)
345mm/s (standard) 172.5mm/s (thick paper) 40,748rpm (standard) 40,748rpm (thick paper)
Polygon motor revolutions
Paper feed tray
500 copies x copies x copies x copies x copies x copies x copies x copies x copies x copies x 2
Cooling for developing section
Duct + develop- Duct + develop- Improvement in ing cooling fan ing cooling fan developing suction Common to Di551/Di5510 Common to Di650/Di7210
Fixing upper roller Fixing heater lamp /1
Common to Di551/Di5510
Common to Di650/Di7210
ADU drive board Transfer and separation corona unit Image control program Printer control program
Exclusively for Di551
Exclusively for Di650
Common to Di5510/Di7210 Included
ADU linear speed change Automation of cleaning operation CPM change
Exclusively for Di5510
Exclusively for Di7210
First white correction Second white correction
Home position search Original read position
First white correction
ADF copy operation After completion of the shading correction started by pressing the START button, M11 (scanner) moves the exposure unit toward the paper exit side. After being driven by the specified number of steps from the position where PS61 (scanner HP) was turned ON, it stops. This position is the exposure position for ADF copy operation. Then, ADF copy operation is performed. After completion of the ADF copy operation, L1 (exposure lamp) is turned OFF to start searching for the exposure unit home position.
Platen copy operation Platen copy operation is performed in different ways depending on whether AE control is performed. After completion of the shading correction started by pressing the START button, AE scanning is performed in the paper feed direction if the AE mode has been selected. EE scanning distance is different between Di551/Di650 and Di5510/Di7210. Di551/Di650: For the original paper size Di5510/Di7210: 30mm from the leading edge of an original paper Then, exposure scanning is performed at the speed corresponding to the specified magnification by the distance corresponding to the original size, thus searching for the home position.
a. Input signals (1) SIG/SCANHP_PS (PS61 to SCDB to PRCB) Scanner home position detection signal The reference position of the home position of the exposure unit is detected. [L]: The exposure unit is detected. [H]: The exposure unit is not detected. b. PRCB output signal (1) SCAN_CLK (PRCB to SCDB) M11 (scanner) clock signal (2) SCAN_F/R (PRCB to SCDB) M11 (scanner) rotational direction switchover signal [L]: The exposure unit is moved toward the paper exit side. [H]: The exposure unit is moved toward the paper feed side. (3) MODE1 to 3 (PRCB to SCDB) M11 (scanner) energize switchover signals (4) SCAN_CUR1 to 3 (PRCB to SCDB) M11 (scanner) energize current switchover signals c. SCDB output signals (1) U, V, W (SCDB to M11) M11 (scanner) drive control signals These signals are used to control rotation of M11 (scanner). By supplying and stopping clock pulses, the motor is turned ON/OFF and the rotational direction is switched.
(1) Operation with AE
First white correction Second white correction AE scanning
(2) Operation without AE
First white correction Second white correction Exposure scanning
 Exposure control
 Original Read Control
24V CONT LAMP.PG
5V2 S.GND 24V1 5V2 S.GND P.GND L.PG
L1 (exposure lamp) is driven by L1 INVB (L1 inverter) and is controlled by PRCB (printer control board) via SCDB (scanner drive board).
L1 (exposure lamp) is a xenon lamp driven by the inverter circuit. The xenon lamp can emit a constant light intensity and generates less heat than other lamps, so it does not require the light intensity control circuit that has been used in the existing machines, requiring no thermal protector circuit. However, since L1 is held lit when the exposure unit is stationary in the ADF mode, FM9 (scanner cooling) is installed in the read section.
a. Output signals (1) EXP_CONT (PRCB to SCDB) L1 (exposure lamp) ON/OFF control signal [L]: L1 ON [H]: L1 OFF (2) CONT (SCDB to L1 INVB) L1 (exposure lamp) ON/OFF control signal [L]: L1 ON [H]: L1 OFF
12V2 12V2 GND APR ADRST PDWN GND TCK /TCK GND RCK /RCK GND LCLK1 /LCLK1 GND SCLK /SEN SDI SDO TG CLAMP GND BCLAMP GND D0 /D0 GND D1 /D1 GND D2 /D2 GND LCLK0 /LCLK0 GND 5V2 5V2 GND
GND TG TG_OUT CLAMP A_CLAMP PRD_KEEP GND +LCLK -LCLK GND -RCLK +RCLK GND GND +TCK -TCK GND GND SCLK /SEN SDI SDO GND -AD_D0 +AD_D0 GND -AD_D1 +AD_D1 GND -AD_D2 +AD_D2 GND -LVDSCLKO +LVDSCLKO GND ADRST APR LVDS_PDWN GND +5V +5V +5V +5V +5V +5V GND +12V +12V +12V GND
(2) ADF mode After lapse of the specified interval since the original's leading edge turned PS306 (original conveyance) ON.
Original read control is performed by ADB (A/D converter board) and CCD sensor installed in ADB.
The light reflected by the exposed original is input to the CCD sensor through the lens. The analog voltage corresponding to the quantity of the input light is A/D-converted in the ADB (A/D converter board), being output to the ICB (image control board). a. Original read The original read timing is as follows: (1) Platen mode After lapse of the specified interval since the exposure unit turned PS61 (scanner HP) OFF.
 APS Control
APC CONT COVER SIG APS.1 SIG APS.2 SIG APS.3 SIG S.GND APS TIM 5V S.GND APS.1 APS 5V S.GND APS.2 APS 5V S.GND APS.3 APS 5V S.GND SIZE PS L 5V S.GND SIZE PS S 5V A.GND SIZE ANA 3.3V
Relationships between sensors and paper sizes are as follows:
PS63 PS64 PS65 PS309 PS310 VR301
APS TIMING SIZE PS L SIZE PS S SIZE ANA
B5R B5 B4 A4R A4 A3 8.5 x 11R
24V1 5V2 S.GND P.GND
The APS method used in the platen mode is different from that used in the ADF mode. The signal read by the APS sensor or RADF's original size detection sensor is processed by ICB (image control board) via SCDB (scanner drive board).
8.5 x 11 8.5 x 14 11x 17
ON OFF b. APS detection timing The APS detection timing differs between the platen mode and DF mode. (1) ADF mode When the RADF mode is selected or an original is set on the RADF original feed tray, APS detection takes place using PS309 (original size/2), PS310 (original size/1), and VR301 (original size). (2) Platen mode When the RADF is closed and PS51 (APS timing) turns ON, L1 (exposure lamp) turns ON and the CCD detects the reflected light to detect the original size in the main scanning direction. Since RADF is still open at this time, the black level of the sky shot (outside the original) and the white level of the original (inside the original) are detected according to whether an original is present. At this time, the original size in the subscanning direction is detected using PS63 to PS65 (APS/1 to APS/3). When the RADF is closed completely and PS311 (ADF open/close) turns ON, CCD reads the white level of the platen cover and the black level in the original. Among the two original sizes detected as discussed above, the larger size is determined as the original size in the main scanning direction.
Index sensor board (INDXSB) Laser driver board (LDB)
Collimator lens unit Write mirror
Cylindrical lens 1
Mechanism Scan*1 Light source*2 Reference positioning *1 Method Polygon mirror 1-chip, 2-beam laser diode (Power: 15 mW per beam) Index sensor
Semiconductor laser Write mirror Collimator lens
Path of laser light The light output from the semiconductor laser is radiated onto the OPC drum via the collimator lens, cylindrical lens 1, polygon mirror, f lens, cylindrical lens 2, and write mirror.
Polygon mirror f lens Cylindrical lens 2
Cylindrical lens 2
Light source Conventionally, two parallel beams were generated from two laser beams. The laser diode adopted for this machine can generate two beams using a single chip, requiring neither fineadjustment prism nor beam composition prism.
 M15 (Polygon) Control
24V1 P.GND POLM CONT POLM CLK POLM LOCK
24V/1 5V/2 S.GND P.GND
M15 (polygon) is driven by PMDB (polygon drive board) and is controlled by PRCB (printer control board).
a. Explanation of operation M15 is a 3-phase brushless DC motor which is driven by the 3-phase bipolar method. The current flowing through the coil is switched according to the position of the rotor detected by the position sensor (magnetic sensor) in the motor. This motor rotates the polygon mirror to scan the laser beams from LDB (laser driver board) in the axial direction of the drum. Its rotation is held constant by PLL control. Rotational speed M15 is powered by 24 VDC and its rotational speed is as follows: In the case of the Di551/Di650 Rotational Linear speed speed 37,795 rpm 320 mm/s 33,070 rpm 21,850 rpm 280 mm/s 185 mm/s Di551 normal Di650 normal -
In the case of the Di5510/Di7210 Rotational Linear speed speed 40,748 rpm 345 mm/s 33,070 rpm 280 mm/s 40,748 rpm 172.5 mm/s Di5510 normal Di7210 normal -
a. Input signals (1) POLM_LOCK (PMDB to PRCB) This signal indicates the clock synchronization state of M15 (polygon). [L]: Synchronous (normal) [H]: Asynchronous (abnormal) b. Output signals (1) POLM_CONT (PRCB to PMDB) This signal turns ON/OFF M15. [L]: M15 ON [H]: M15 OFF (2) POLM_CLK (PRCB to PMDB) This is a reference clock signal for PLL-controlling M15 in PMDB.
 Image Write Control
5V SGND /IND SGND /INDPR GND VIDEO2 /VIDEO2 GND LPR5V LD5V LD5V GND VIDEO1 /VIDEO1 GND /ENB1 /S/H1 /ALM1 GND /ENB2 /S/H2 /ALM2 GND DADI DACLK DALD
(1) When printing of the first copy starts M6 (loop) is turned ON at the timing that is determined by the P counter (that starts when printing starts), thus starting feed of paper. M6 is stopped temporarily after lapse of a specified time from turning ON of PS44 (registration) by the leading edge of paper, a loop is formed by registration rollers, and the paper is fed to the transfer unit. (2) When printing of the second or subsequent copy After lapse of the specified time from turning OFF of PS44 (registration) by the trailing edge of the preceding paper.
a. PRCB input signals (1) LOOP_PS (PS36 to PRCB) Paper passage detection signal [L]: Paper does not exist. [H]: Paper exist. (2) 2ND_PS (PS44 to PRCB) Second paper feed reference timing detection signal [L]: Paper exists. [H]: Paper does not exist.
b. PRCB output signals (1) A and /A (PRCB to M6) A-phase drive control pulse signal for M6 (2) B and /B (PRCB to M6) B-phase drive control pulse signal for M6
 Paper Up/Down Control
5V3 BPDN_PS SGND
Paper in the by-pass tray is pushed up/down by M20 (up/down motor/BP). M20 is controlled by PRCB (printer control board). Related signals are PS34 (tray upper limit /BP) and PS35 (tray lower limit /BP).
a. Paper up/down control M20 (up/down motor/BP) is turned ON to push up paper. When PS34 (tray upper limit/BP) detects the paper upper limit and turns ON, M20 turns OFF to stop pushing up paper. When paper is fed and consequently PS34 turns OFF, M20 turns ON again, maintaining the upper limit position of paper. Paper up timing ON timing At start of copying OFF timing M20 (up/down motor/BP) is turned OFF when PS34 (tray upper limit /BP) is turned ON. Paper down timing ON timing When there is no paper or a paper jam occurs. OFF timing M20 (up/down motor/BP) is turned OFF when PS35 (tray lower limit/BP) is turned ON.
b. (1) (2)
c. (1) (2)
5V3 BPUP_PS SGND
a. PRCB input signals (1) BPUP_PS (PS34 to PRCB) Paper upper limit position detection signal (bypass tray) [L]: Not detected. [H]: Detected. (2) BPDN_PS (PS35 to PRCB) Paper lower limit position detection signal (bypass tray) [L]: Not detected. [H]: Detected. b. PRCB output signal (1) BPUDM_A, B (PRCB to M20) M20 drive control signal
5V2 S.GND 5V3 BPSIZE_S_PS SGND 5V3 BPSIZE_L_PS SGND 5VA BPSIZE_VR
PS31 PS32 VR5
The size of paper in the by-pass tray is detected by PS31 (paper size/1-BP), PS32 (paper size/2BP), and VR5 (paper size/BP). Based on the detection signals, PRCB (printer control board) judges the paper size.
The length of paper is detected by PS31 (paper size/1-BP) and PS32 (paper size/2-BP). The bypass tray is provided with a variable resistor (VR5) interlocked with the guide position to judge the paper width according to the change in the resistance value. The relationships between the sensors and paper sizes (lengths) are as follows: Paper size 8.5 x 11 Sensor or less PS31 PS32 OFF OFF A4R to B5R ON OFF F4 or larger ON ON
Reverse/exit selection gate
Fixing roller (upper) Fixing roller (upper)
Fixing exit PS (PS30)
Fixing roller (lower) Exit roller Decurler roller Fixing roller (lower) Fixing exit PS (PS30) Exit roller Reverse/exit selection gate Main body exit roller
ADU gate Reverse/exit roller Paper reverse PS (PS42) Reverse/exit gate Main body exit roller ADU reverse roller
ADU paper conveyance In the two-sided copy mode, the paper finished with printing on the front side is fed, through the path under the reverse/exit selection gate, into the reverse/exit section just like the reverse/exit operation. Then, the paper is fed to the ADU by the reverse/exit roller and ADU reverse roller. These rollers do not rotate in the opposite direction even when the paper reverse PS (PS42) detects the trailing edge of the paper, allowing the paper to be fed until the reverse/exit PS (PS46) turns OFF.
Reverse/exit gate Reverse/exit selection gate Fixing roller (upper) Fixing roller (lower) Reverse/exit PS (PS46)
Straight ejection When paper is ejected straight, the reverse gate SD (SD7) is turned ON to close the reverse/exit selection gate. The paper fed by the paper exit roller is fed to the paper exit roller with the print side up.
ADU reverse roller ADU gate Reverse/exit roller Paper reverse PS (PS42)
Non-stack paper feed mechanism In the two-sided copy mode, the ADU reverse roller starts rotating in the opposite direction when the reverse/exit PS (PS46) detects the trailing edge of paper and consequently it turns
OFF. The paper is fed toward the reverse/exit section. However, since the ADU gate is closed, the paper is fed to the ADU conveyance roller/1 through the path above this gate. Thus, the paper is reversed and fed to the ADU exit, without being stacked in the ADU. The reversed paper is fed by ADU conveyance rollers 1-4.
Reverse/exit roller ADU conveyance roller/1 ADU reverse roller ADU conveyance roller/2 ADU conveyance roller/3 ADU conveyance roller/4
rollers 3 and 4. The ADU conveyance MC (MC13) is turned ON/OFF only when the paper length is 325 mm or longer. If the paper length is less than 325 mm, it stays ON during copying.
A contact image sensor is used as PS70 (paper mis-centering). The paper edge position is detected by paper mis-centering sensors. Based on the edge position information, the image write position is shifted to correct mis-centering and leading edge timing at the time of image write. PS70 operates after a lapse of the specified time from turning ON of PS43 (leading edge).
a. Input signals (1) LOOP_PS (P36 to PRCB) Loop formation reference timing detection signal. The leading edge or trailing edge of paper is detected. [L]: Detected. [H]: Not detected. (2) LD (M5 to ADUDB) M5 fault detection signal [L]: Normal [H]: Abnormal (3) DEF_VIDEO (PS70 to ADUDB) PS70 (paper mis-centering) sensor output signal (4) 2ND_PS (PS44 to ADUDB) Second paper feed reference timing detection signal [L]: Detected. [H]: Not detected. (5) EDGF_PS (PS43 to ADUDB) Paper leading edge detection signal [L]: Detected. [H]: Not detected. (6) REG_PS (ADUDB to PRCB) Paper leading edge detection signal. [L]: Detected. [H]: Not detected. b. Output signals (1) START/STOP (ADUDB to M5) M5 (conveyance) drive control signal [L]: M5 ON [H]: M5 OFF (2) 2NDM_CLK, CLK (PRCB to ADUDB to M5) M5 (conveyance) clock signal (3) 2ND_MC (ADUDB to MC1) MC1 (registration) drive control signal [L]: MC1 ON [H]: MC1 OFF (4) DEF_SI (ADUDB to PS70) PS70 (paper mis-centering) start pulse 2-N-8
(5) DEF_CLK (ADUDB to PS70) PS70 (paper mis-centering) drive clock signal (6) DEF_LED (ADUDB to PS70) PS70 (paper mis-centering) LED control signal (7) CW/CCW (ADUDB to M5) M5 (conveyance) rotational direction indication signal [L]: CCW [H]: CW (8) H/L (ADUDB to M5) M5 (conveyance) rotational speed indication signal [L]: Low speed [H]: High speed (9) A, /A (PRCB to M6) M6 (loop roller) A-phase drive control pulse signal (10) B, /B (PRCB to M6) M6 (loop roller) B-phase drive control pulse signal
 Paper Conveyance Control
5V MAINEXIT PS S.GND IO DTXD IO DCLK ADU LATCH IO UCLK REQ1 IO URXD ACK1 ERR OUT1 2NDM CLK
SUC FAN SUC EM P.GND +5V PGND START/STOP CLK CW/CCW LD H/L PGND +24V
5V2 24V1 S.GND
24V2 P.GND 24V1 5V2 S.GND P.GND
a. Input signals (1) MAINEXIT_PS (PS37 to PRCB) Main body exit section paper passage detection signal [L]: Detected. [H]: Not detected. (2) SUC_EM (FM3 to ADUSDB) FM3 (conveyance suction) fault detection signal [L]: FM3 is normal. [H]: FM3 is abnormal. b. Output signal (1) MAINEXIT_PS (ADUDB to FM3) FM3 (conveyance suction) drive signal [L]: FM3 OFF [H]: FM3 ON
The paper fed from the second paper feed section is fed to the fixing unit by the pre-transfer roller and conveyance belt driven by M5 (conveyance). In the conveyance section, paper suction is provided by FM3 (conveyance suction) through the duct installed on the back of the conveyance belt. M5 and FM3 are controlled by PRCB (printer control board) via ADUDB (ADU drive board).
b. PRCB output signals (1) FIXHT1_CONT (PRCB to DCPS) L2 drive control signal [L]: L2 ON [H]: L2 OFF (2) FIXHT2_CONT (PRCB to DCPS) L3 drive control signal [L]: L3 ON [H]: L3 OFF (3) FIXHT3_CONT (PRCB to DCPS) L4 drive control signal [L]: L4 ON [H]: L4 OFF
OTHER KINDS OF CONTROL
 Parts Energized when SW1 (Main Power) is OFF
COIL2 (Europe only) DCPS
COIL1 (Europe only)
SW1 CBR1 SW3
DCPS CBR2 ACDB
If the power cord is plugged in the wall outlet, the following parts are energized regardless of whether SW1 (main power) is ON or OFF: CBR1/2 (circuit breaker/1/2) If an excessive current flows due to a short in an internal part or other factors, this breaker turns OFF to cut off the power to the machine. NF (noise filter) The noise filter is used to reduce the noise arriving through the power line. DCPS (DC power supply unit) RL2 (heater relay) is turned ON to turn ON HTR1 (heater/1), HTR2 (heater/2), and HTR3 (drum heater (spare parts)). Internal heaters HTR1 (heater/1), HTR2 (heater/2), and HTR3 (drum heater (spare parts)) are energized in synchronization with ON or OFF operation of SW1 (main power). (Di551/Di650) HTRs 1 to 3 are energized by turning ON/OFF SW3 (heater switch). (Di5510/Di7210)
a. 2 UNIT EXPLANATION
 Parts that Operate when SW1 (Main Power)/SW2 (Sub Power) is ON
AC(L) RL1 5VDC -5VDC 12VDC
REM/2 REM/3 AC OFF(IN)
5VDC 12VDC -12VDC
a. Operation performed when SW1 (main power) is ON When SW1 (main power) is turned ON, AC power is supplied to DCPS (DC power supply unit). As a result, DCPS supplies 5 VDC and 12 VDC to the status management and control circuit on ICB (image control board), HDD. ICB supplies 5 VDC to OB1 (operation board/1). Operation performed when SW2 (sub power) is ON If SW2 (sub power) is turned ON when SW1 (main power) is already ON, DCPS supplies 24 DVC for driving various loads. Thus, all boards are energized and initialization of this machine starts.
(2) AC_OFF (IN) (DCPS to ICB) AC input OFF detection signal (for data evacuation to HDD) [L]: When AC power is turned ON. [H]: Until DC power output is stopped after AC power is turned OFF.
a. Output signals (1) REM/2, /3 (ICB to DCPS) The DC voltage output from DCPS (DC power supply unit) is controlled according to the combination of levels of two signals. REM/2 H L L REM/3 H H L 5V1,12V1 5V1,12V1,5V2,12V2, 24V1,-5V1 5V1,12V1,5V2,12V2, 24V1,-5V1,24V2 Output
 Cooling Fan Control
MAINFAN EM MAINFAN D MAINFAN HL 20 P.GND WRFAN1 EM WRFAN1 D WRFAN1 HL P.GND BINF_D
Relay connector (CN814, 834) Securing shaft screw Paper feed unit Screw
 Removing and Reinstalling the Paper Feed Trays 1 and 2
Warning: When removing the tray, stand in a proper position so that you do not hurt your back and waist. If the tray contains paper, remove all paper before removing the tray. Caution: Be sure the power cord has been unplugged from the wall outlet. a. Procedure (1) Draw out paper feed tray 1 or 2. (2) Remove the paper feed unit. (3) Remove four screws and remove tray 1 or 2 by lifting.
 Removing and Reinstalling the Paper Feed Roller and Feed Roller Rubber
a. Procedure (1) Remove the paper feed unit. (2) Remove the two stop rings and slide the two bearings outward. (3) Release the feed roller axis from the holder slit to detach the paper feed roller unit.
 Removing and Reinstalling the Double Feed Prevention Roller Rubber
a. (1) (2) (3) Procedure Remove the paper feed unit. Remove the paper feed roller unit. Remove the stop ring to detach the double feed prevention roller. (4) Remove the double feed prevention roller rubber from the roller.
Stop ring Double feed prevention roller
Double feed prevention roller rubber
Paper feed roller unit Bearing Stop ring
(4) Remove the two stop rings from the paper feed roller unit to detach the paper feed roller and feed roller. (5) Remove the rubber from each roller.
Paper feed roller rubber
(5) Reinstall the above parts following the removal steps in reverse. Caution1: When reinstalling the double feed prevention roller, pay attention to their orientation. Caution2: Check that no grease or the like remains on the double feed prevention roller.
Feed roller Feed roller rubber Stop rings
(6) Reinstall the above parts following the removal steps in reverse. Caution1: When reinstalling the rollers, pay attention to their orientation. Caution2: Check that no grease or the like remains on each roller. 3-J-2
 Replacing the Pre-registration and Feed Clutches (MCs)
a. Procedure (1) Remove the paper feed unit. (2) Remove the four connectors (CN810, 811, 830, 831). (3) Remove the stop ring to detach the pre-registration MC/1/2 (MC4/6) and feed MC/1/2 (MC3/5).
Registration MC (MC1) Relay connector (CN420)
Relay connector (CN422)
(4) Remove five screws to remove the second paper feed unit.
 Cleaning the Registration PS (PS44)
Warning: The interlock which is turned OFF when the front right or left door opens or closes should never be turned ON forcibly with the ADU stand drawn out. Caution: Be sure the power cord has been unplugged from the wall outlet. Procedure Draw out the ADU stand from the main body. Detach the ADU cover. Remove the second paper feed unit Turn the second paper feed unit upside down and clean the registration PS (PS44) with a blower brush.
Registration PS (PS44)
a. (1) (2) (3) (4) 3 DIS./ASSEMBLY
 Removing and Reinstalling the Registration Roller
In the case of the Di551/Di650 Warning: The interlock which is turned OFF when the front right or left door opens or closes should never be turned ON forcibly with the ADU stand drawn out. Caution: Be sure the power cord has been unplugged from the wall outlet. Procedure Draw out the ADU stand from the main body. Detach the ADU cover. Remove the second paper feed unit Remove the registration MC (MC1). Turn the second paper feed unit upside down and remove the E-ring on the front of the registration roller.
(6) Remove the two E-rings (one at the left and the other at the right) and one bearing from the registration roller.
Registration roller Front side E-ring Bearing
(7) Slide the registration roller to the front, then remove it by lifting the rear end.
2 Registration roller
(8) Reinstall the above parts following the removal steps in reverse.
In the case of the Di5510/Di7210 Warning: The interlock which is turned OFF when the front right or left door opens or closes should never be turned ON forcibly with the ADU stand drawn out. Caution: Be sure the power cord has been unplugged from the wall outlet. Procedure Draw out the ADU stand from the main body. Detach the ADU cover. Remove the second paper feed unit. Remove the registration MC (MC1). Turn the second paper feed unit upside down and remove the two E-rings on the front of the registration roller. Remove the two E-rings at the rear of the registration roller. Remove the two bearings (one at the left and the other at the right) from the registration roller.
(8) Slide the registration roller to the front, then remove it by lifting the rear end. (9) Remove the bearing from the registration roller.
b. (1) (2) (3) (4) (5)
(10) Reinstall the above parts following the removal steps in reverse.
Bearing Registration roller E-ring
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