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C-1 Composition of the service manual. C-2 Notation of the service manual.IMPORTANT NOTICE Because of possible hazards to an inexperienced person servicing this product as well as the risk of damage to the product, Konica Minolta Business Technologies, INC. (hereafter called the KMBT) strongly recommends that all servicing be performed only by KMBTtrained service technicians. Changes may have been made to this product 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. 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 product properly. Keep this Service Manual also for future service. When servicing the product, 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. Konica Minolta brand products are renowned for their high reliability. This reliability is achieved through high-quality design and a solid service network. Product design is a highly complicated and delicate process where numerous mechanical, physical, and electrical aspects have to be taken into consideration, with the aim of arriving at proper tolerances and safety factors. For this reason, unauthorized modifications involve a high risk of degradation in performance and safety. http://drterrace.com/london-100.com/userfiles/cse-style-manual-7th-ed_-name-year.xml

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Such modifications are therefore strictly prohibited. The points listed below are not exhaustive, but they illustrate the reasoning behind this policy. In that case, it is obligation of customer engineer (hereafter called the CE) to attach appropriate power plug or power cord set in order to connect the product to the supply. However, in daily use, any electrical equipment may be subject to parts wear and eventual failure. Use of an adapter leads to the product connecting to inadequate power supply (voltage, current capacity, grounding), and may result in fire or electric shock. Contact problems may lead to increased resistance, overheating, and the risk of fire. If current leakage occurs in an ungrounded product, you may suffer electric shock while operating the product. Connect power plug to grounded wall outlet. When securing measure is provided, secure the cord with the fixture properly. Check whether the sheath is damaged. If the power plug, cord, or sheath is damaged, replace with a new power cord or cord set (with plug and connector on each end) specified by KMBT. Overheating may occur there, leading to a risk of fire. The cable may be broken, leading to a risk of fire and electric shock. Current that can flow in the extension cord is limited, so using a too long extension cord may result in fire. Do not use an extension cable reel with the cable taken up. A risk of fire and electric shock exists. Dust collected around the power plug and outlet may cause fire. In the case of an earthquake and so on, the product may slide, leading to a injury. Do not make any adjustment not described in the documentation. When the power plug is inserted in the wall outlet, some units are still powered even if the POWER switch is turned OFF. High-voltage exists around the drum unit. A risk of electric shock exists. The laser light can enter your eye, leading to a risk of loss of eyesight. Do not supply power with the write unit shifted from the specified mounting position. http://aulac.com.vn/userfiles/cse-style-manual-abbreviations.xml

Dispose of the used lithium battery using the method specified by local authority.It may be stimulative. If the substances get in the eye, rinse with plenty of water immediately. You may be burned due to dust explosion. Isopropyl alcohol and acetone are highly flammable and must be handled with care. If this happens, immediately wipe it off. Breathing large quantities of organic solvents can lead to discomfort. Replace only with the same or equivalent type recommended by the manufacturer. Ersatz nur durch denselben oder einen vom Hersteller empfohlenen gleichwertigen Typ. Remplacer uniquement avec une batterie du meme type ou d’un type equivalent recommande par le constructeur. Udskiftning ma kun ske med batteri af samme fabrikat og type. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Havita kaytetty paristo valmistajan ohjeiden mukaisesti. VARNING Explosionsfara vid felaktigt batteribyte. Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. S-12 SAFETY INFORMATION SAFETY INFORMATION IMPORTANT NOTICE 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. 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. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and electric shock. Do not remove caution labels. And also, when the caution label is peeled off or soiled and cannot be seen clearly, replace it with a new caution label. https://skazkina.com/ru/emd-marine-engine-manual

S-15 MEASURES TO TAKE IN CASE OF AN ACCIDENT MEASURES TO TAKE IN CASE OF AN ACCIDENT 1. If an accident has occurred, the distributor who has been notified first must immediately take emergency measures to provide relief to affected persons and to prevent further damage. 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 specified by every distributor. S-16 Legal restrictions on copying Certain types of originals must never be copied with the purpose or intent to pass copies of such originals off as the originals. When in doubt about the nature of an original, consult with legal counsel. Detail In order to prohibit the illegal reproduction of certain originals, such as paper currency, this machine is equipped with a counterfeit prevention feature. Due to the counterfeit prevention feature that this machine is equipped with, images may be distorted. Classification Load symbol Ex.And the paper feed direction that is perpendicular to the longitudinal feed is referred to as the transverse feed. For the transverse feed, no specific notation is employed. Paper size A4 A3 Feed direction Notation Transverse feed A4 Longitudinal feed A4S Longitudinal feed A3 C-5 Blank Page C-6 SERVICE MANUAL Field Service C6500 Main body 2006.09 Ver. 1.0 Revision history After publication of this service manual, the parts and mechanism may be subject to change for improvement of their performance. Therefore, the descriptions given in this service manual may not coincide with the actual machine. When any change has been made to the descriptions in the service manual, a revised version will be issued with a revision mark added as required. http://daniela-vashiron.com/images/car-manuals-ebay.pdf

A number within 1 represents the number of times the revision has been made.Unit Description Quantity classification 1 PI section Paper feed rubber Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 2 Actual replacement 13QN-443 count: 100,000 feed Separation rubber 2 56BA-575 B. Spotted replacement part No. Unit Description Quantity classification 2 PI section Pick-up rubber Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 6 Actual replacement 50BA-574 3.2.7 count: 200,000 feed FS A. FS-503 (1) Maintenance 1 (Every 600,000 prints) No. Unit Description Quantity classification 1 Conveyance Intermediate convey- section ance roller (sponge Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 4 Actual replacement count: 200,000 feed roller) 13QE4531 Stacker sec- Paper assist roller tion (sponge roller) 1 20AK4210 (3) Maintenance 3 (Every 1,000,000 prints) No. Unit Description Quantity classification 1 Paper feed Paper feed roller section 13QN-446 Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 2 Actual replacement count: 100,000 feed Separation roller 2 13QN-443 C. Maintenance 3 (Every 1,000,000 prints) No. Unit Description Quantity classification 1 Paper feed Pick-up roller section 50BA-574 Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 2 Actual replacement count: 200,000 feed D. Maintenance 4 (Every 3,000,000 prints) No. Unit Description Quantity classification 1 E. Paper feed Torque limiter section 13QN4073 Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 2 Actual replacement count: 600,000 feed Spotted replacement part No.

Unit Description Quantity classification 1 Trimmer sec- Trimmer blade assem- tion bly Implementation classification Materials Cleaning Check Lubrication Replacement Tools used 1 Actual replacement count: 37,500 cuts 15AN-570 C. Spotted replacement part No. However, be sure to replace them when they get to the actual count value. A. Main body No. Classification Part name Part number Qt. Actual replace- Parts count ment cycle 1 ADU section No. On the user screen, the life counter shows the remaining life with percentage (100 is the end of life). Developer Every 200,000 prints or 130km of developing roller drive distance.Toner collection box Assy Every 50,000 prints or Charging coronas When the waste toner full sensor (PS51) equivalent detects the waste toner full status. Every 100,000 prints or Charging time of the charging coronas is equivalent 70 hours. Belt cleaner blade Every 200,000 prints or 130km of the belt cleaner blade drive dis- equivalent tance. On the user screen, the life counter shows the remaining life with percentage (100 is the end of life). 3.4.2 Conditions for life specifications values The replacement cycles (number of prints) are values calculated based on the actual life of parts when printing is made under the conditions listed in the table below. Since the idle running time (when not creating an image) of each part can vary widely depending on the print mode, the actual life cycle may become different between the parts whose replacement cycle (number of sheets) are the same.Pull out the process unit. Remove the transfer belt unit. It is normal if the toner is accumulated because the toner is used to grind the belt surface. After that, repeat steps 3 and 4 to eject all the developer. Using this system dispenses not only with printing the list on paper but also visiting the users. The operation of the functions is available while in jams, malfunction and a low power mode.

To make use of the above functions, it is necessary to send a mail to the main body with a simple keyword (command). For particulars, contact the system administrator. B. Setting from the Web Utilities Enter the setting of the mail server from the Web Utilities. To use the Web Utilities, make preparations of a PC that can be connected to the network. When no correction is made, a down load error of the program may result. (1) Procedure Step 1 Operation Start the Web browser. When a proxy is set on the Web browser, the main body Web may not be accessible. For particulars, contact the network administrator.Sending mail Set the time-out of the SMTP connection. For default, 5 minutes is set. (SMTP) server time out Interval between The main body check the receiving mail server to see if a mail is newly fetching mails received. (An interval can be specified in the range from 1 minute to 60 minutes.) Taking into consideration the load on the network, this is usually set at the interval of 10 minutes. Receiving mail Set the IP address of the incoming mail server.User name on the Enter an account name assigned to the main body by the receiving mail server server. Password Enter a password to the account name above. E-mail address of Enter the mail address of the main body its own. No entry cause no problem. 119 4. SERVICE TOOLS Field Service Ver1.0 Sep.2006 bizhub PRO C6500 Step Operation Set item CE password Details Enter a password that is added to the title (subject) of a mail sent to the main body. The main body uses this password for security check. Announce delay A selection is made if the difference (time required) between the time when a time in reply mail mail was sent to the main body and the time when the main body handled the mail is indicated in the mail. Enable POP (IMAP) After authentication is made by the receiving mail server, a selection is made before SMTP to decide whether to send the mail or not. {-Variable.fc_1_url-

When a test failed, re-check the set items following the error message. Sending test A mail sending test is made on the SMTP server. Au ALL Send back all of the above list prints by mail.Accordingly, not all letters of the command must be typed. It is recognized by the minimum letters in the above table. When more mails than 5 is being receive by the mail server, they will be handled while in the next reception. 122 5. FIRMWARE VERSION UP 5. FIRMWARE VERSION UP 5.1 ISW 5.1.1 Types of ISW A. ISWTrns This is a software for Windows to rewrite the firmware, it rewrites firmware with the main body and the PC locally connected with a parallel cable or a UBS cable. In this condition, the power save LED blinks in orange when power switch is turned ON and placed in the ISW stand-by mode. In this status, write the OACB firmware (I1 to I5 all) in ISWTrns using a PC. ISWTrns does not support parallel port data transfer in ECP mode. Because of the above, an error occurs during transfer and cancels the transfer if it is done in ECP mode. Therefore using ISWTrns in a PC with ECP settings, the ECP mode need to be canceled. 1) Cancelling procedure of the ECP port Cancel the ECP mode following the procedure given below. Step 1 2 Operation Start the PC. Select the folder into which firmware is stored as a copied file. In the main screen, the transmission file (firmware) is selected, the information is displayed, the checksum and the transmission file are sent out. When more than one version files are stored in the same folder, all versions are displayed in this list box. The list displayed here is sorted in the order of names, and an item displayed last is selected when the list is displayed. The number of files actually transmitted is described in the checksum attached to the firmware. For details of the power save LED display, refer to the table below. No.

Operation Power save LED status 1 CPU in initialization when the power is turned on 2 Flash memory in checking OFF 3 An error is detected while in memory check (ISW standby status) Blinks in orange ISW processing (data being received from the PC and firmware being Blinks in green 4 OFF written) 5 When abnormality is detected while in data transmission Blinks in red and green alternately 6 When an error is detected while in writing firmware Blinks in red 7 Memory check completed successfully: During reboot OFF B. ISWTrns error list The ISWTrns displays messages when an error is shown or the operation is completed. The table below shows the contents of the message and the status of the ISWTrns. Message Status of the ISWTrns Cannot open a checksum file Opening of a checksum file failed. Possible causes include a corrupted Cannot read a checksum file Loading of a checksum file into memory failed. Possible causes include a file and a file in use.Cannot open a file Opening of a send file failed. Possible causes include a corrupted file and a file in use. Cannot open the LPT port Opening of the LPT port failed. Communications port setup A call to GetCommState failed.Cannot open a send file Opening of a send file failed. Cannot send a Term Test file Transmission of a communications test block failed. 1. The main body is not ready to receive. 2. The cable is out of position. 3. Transmission of the wrong send file was attempted. Unsuccessful file transmission The transmission of a send file failed. Possible causes include a cable out of position. Unsuccessful transmission to the Output to the LPT port failed. Possible causes include a cable out of LPT port position. Invalid folder name An invalid folder name was entered. Start a folder name with a drive name, such as C:\. Default data folder is not set. A data folder is not set in ISWTrns.INI. Please select folder. This message is displayed when ISW Trns launches for the fist time.

Unsuccessful thread creation The creation of a thread failed. 141 bizhub PRO C6500 Field Service Ver1.0 Sep.2006 5. FIRMWARE VERSION UP Field Service Ver1.0 Sep.2006 bizhub PRO C6500 Message No send file available Unable to copy several files Status of the ISWTrns No file to copy file is selected or exists in the folder. 1. The destination folder does not exist. 2. When the overwrite check box is not checked, an attempt is made to copy to a file having the same file name. 3. An attempt is made to overwrite a protected file. 4. Any other cause (such as a file being used by another application or OS problem) Send file not found, or invalid file The number of divisions of a send file recorded in the checksum file and name in the folder. Check. the number of files actually existing do not match. 1. When a file with an illegal name is in the data folder, or a file name that seems to be illegal is displayed in the folder list. 2. The number of files in a divided file is wanting. Identify the wanting files in the folder list and copy them again. 3. When the checksum file is damaged, copy it to the folder again. C. Main body error list The following shows the malfunction code. Condition 1 Causes Measure taken The ISWTrns does not The ISWTrns.EXE file is damaged Set it up again. start up. The setup files itself is damaged. Check the setup files and set it up When an item in the The transferred file is not stored in the Check to see if the firmware file is combo box is selected, specified folder. The data folder in the option screen is Check the setting of the data folder. The file name is illegal (or has been The file name must be used with no changed.) change made. When the file name is changed, the display or selection of the file becomes unavailable. When the file name is changed, return it to former state.Copy the firmware and check it again.The main body is not in the receiving Check the main body to see if it is in condition.Wrong data has been sent. Check the file status screen to see if the receiving mode on the main body side (type of receiving board) corresponds with the transferred file on the PC side. The length of the cable is out of spec- Use a cable the length of which is less ifications. than 2 m. The parallel port of the PC is set to Cancel the ECP mode with reference the ECP mode.However 24 files is the maximum it can display on the touch panel. White: File effective as ISW. Yellow: Special ROM file. ISW can be operated at the customer facility without carrying the program, if Internet ISW using main body operation panel or Web browser is used.For particulars, contact the system administrator. 149 bizhub PRO C6500 Field Service Ver1.0 Sep.2006 bizhub PRO C6500 5. FIRMWARE VERSION UP Field Service Ver1.0 Sep.2006 B. Settings from the Web browser Enter the setting of the program server from the Web browser. At this time, in order to use the Web browser, make preparations of the PC that can be introduced into the network. Correcting no input error may result in the download error of the program. (1) Procedure Step 1 Operation Start up the Web browser. When the proxy is set on the Web browser, the main body Web may not be accessed. For particulars, contact the network administrator. When using no proxy server (fire wall), proceed to the step 9. Enable proxy Select the following. Proxy Server IP Address When using the proxy server, set the IP address of the proxy Port Number When using the proxy server, set the number of the port that server.Select the protocol to be used from the pulldown menu left and enter the address after that in the text box on the right. In the case of ftp, it is a relative path from the home directory. User name on the program Enter the account name of the program server.Program Server IP Address Set the IP address of the server that stores the firmware to be Target directory With http, set the path after the host domain. Also, with ftp, set downloaded. User name on the program Enter the account name of the program server.Command ISW Option Descriptions I0, I1, I2, I3, I4, I5 Specifies a board that execute ISW. Be sure to execute ISW with the main body not used. However, when the main body is in use (jobs present), the Internet ISW does not operate. (2) Power cut while in the ISW While in the ISW rewrite, the operation panel and the power switch (SW2) are locked. However, when the main power source is turned off due to power cut etc., the main body cannot start up. However, this is a problem encountered while in the overall control board (OACB) rewrite. As for other errors while in the ISW, they can be rewritten by the Internet ISW again. Should the main body be not able to start due to the reason above, go to the actual place and use ISWTrns to conduct the rewrite of the program. 157 bizhub PRO C6500 Field Service Ver1.0 Sep.2006 bizhub PRO C6500 5. FIRMWARE VERSION UP 5.4.7 Field Service Ver1.0 Sep.2006 Internet ISW using the operation panel When the customer engineer uses the Internet ISW from the operation panel, with no PC brought with, the main body can download the program from the program server to conduct the rewrite automatically. (1) Procedure e.g.) When rewrite the overall control board (OACB) firmware (ALL). When accessing the outside through the proxy server, the entry of the user name and password of the proxy server is not required, this proxy authentication is likely to be used. When all the settings are made correctly and no communication is available with type 1 authentication, apply this type. In case of the user name and the password of the proxy server are required when accessing the outside through the proxy server, this proxy authentication is likely to be used. When all the settings are made correctly and no communication is available with type 3 authentication, apply this type. For most of the proxy servers, the type 1 authentication is used. Therefore, screws that lead to the disassembly of the CCD unit must not be removed. The lens reference plate assy is a reference for the positioning the CCD unit. If the lens reference plate assy is removed, the optical axis of the CCD unit may become misaligned. Therefore, the positions of the mirror unit and the exposure unit must not be arbitrarily adjusted. Opening the cover allows dust and dirt to enter deep into the write unit and they may block the laser beam path. If a laser beam is emitted and strikes your eye, it may result in permanent vision loss. You must remove the levers without directly viewing them.Is toner filled? B. Checkpoints when conductions on-site service Due attention should be paid to the following when repairing the machine. 1. Be sure to unplug the power cord from the power outlet. Also, when operating the machine with the power supplied, be careful of the scan of the exposure unit and be sure not to get caught by the gear. 2. 3. 4. 5. The fusing section may be very hot. Be careful not to get burnt when handling it. The developing unit is strongly magnetized. Be careful not to bring a watch and instrument near to the unit. Be careful not to damage the drum with a tool. Be careful not to touch IC directly with bare hands. 227 bizhub PRO C6500 8. UTILITY MENU Field Service Ver1.0 Sep.2006 8. UTILITY MENU 8.1 List of utility mode 01 Scan Send 01 Address Edit Address 02 E-mail Title Setting 03 E-Mail Text Setting 02 User Set- 01 System Set- 01 Language Setting ting ting 02 Unit Setting 03 Feed Tray 01 Paper Setting Setting 02 Feed Tray Auto Selection 03 ATS Permit Setting 04 Auto Paper Type 05 Dehumidification Fan 04 Reset Set- 01 Auto Reset Setting ting 02 Mode Reset Setting 05 Default Screen Setting 06 Preset Zoom Setting 07 Power Save Setting 08 Time and Date Setting 09 Buzzer Set- 01 Buzzer Volume Regulation ting 02 Buzzer for Job Stop Set 010 Key Response Time 011 Short cut 01 Application Key Setting 02 Quality Adjust. (Copy) 03 Quality Adjust.(Scanner) 04 Quality Adjust. Area Set 012 Service Port Device 02 Initial Setting 01 Copy Initial setting 02 Scan Initial setting 03 Common Setting 04 Copy Setting 05 Scan Setting 06 Printer Set- 01 Gray Text Outline Enhance ting 02 Thin Line Enhancement 03 Reversed Text Enhancement 04 Blur Prevention 228 Field Service Ver1.0 Sep.2006 07 Image Qual- ting ity Setting 01 Screen bizhub PRO C6500 02 User Set- 8. UTILITY MENU 02 Screen Initial setting 03 Original Density shift 04 ACS adjustment 08 Change Password 03 Machine 01 System Set- 01 Power Save Setting Admin. Adjustment 04 CD-Mag. Adjustment 05 Lead Edge Erase Adjustment 06 Registration Loop Adj. 07 Pre-registration Adj. 04 Finisher 01 Stapler Position Adj. Adjustment 02 Multi Folder (Punch) Adj. 03 Multi Folder (Fold) Adj. 04 Multi Folder (PI) Adj. 05 Stacker Adjustment 06 Saddle Stitcher Adj. 07 RU Adjustment 05 Scanner 01 Restart Timing Adjustment Adjustment 02 Centering Adjustment 03 FD-Mag. Glass Size Detect 02 ADF Original Size Detect 03 Orig. In either way, the started service mode is the same. This adjustment changes the restart timing of the registration roller to adjust the image position in sub-scanning direction. SERVICE MODE Field Service Ver1.0 Sep.2006 10.4.10 Automatic Developer Charge (Drum Peculiarity Adj.) In this mode, new developers are automatically charged after the current developers being discharged from the developing unit manually. Be sure not to reuse the funnel. Measure developer permeability in the developing unit with TCR sensor, memorize the input voltage obtained when the TCR sensor output voltage became the standard value to the NVRAM board (NRB). This process completes in about 10 seconds and complete message is shown on the screen. 287 bizhub PRO C6500 Field Service Ver1.0 Sep.2006 bizhub PRO C6500 10. When the toner concentration reaches to the standard value, the main body stops. SERVICE MODE bizhub PRO C6500 No. Ready time out error 325 bizhub PRO C6500 Field Service Ver1.0 Sep.2006 10. SERVICE MODE bizhub PRO C6500 No. Field Service Ver1.0 Sep.2006 CSRC Item Count condition parameter (F1) 138 89 — 139 8A — 140 8B — 141 8C — 142 8D — 143 8E Punch 144 8F Z-Folding 145 90 Multi Folder Punch Waste Full 146 91 — 147 92 — H. Copy Mode Counter (2) Confirm the status of use of each copy mode. Field Service Ver1.0 Sep.2006 CSRC Item Count condition parameter (F2) 063 3E 064 3F — — 065 40 Off mode time 066 41 — 067 42 — 068 43 Polygon motor ope.Shows the count in percentage with respect to the end of its parts life.SERVICE MODE Code Paper feed conveyance Classification Field Service Ver1.0 Sep.2006 Optical device Multi code Symbol Field Service Ver1.0 Sep.2006 Code bizhub PRO C6500 Paper feed conveyance Classification 10. SERVICE MODE Code FD Classification Field Service Ver1.0 Sep.2006 Multi code Symbol Field Service Ver1.0 Sep.2006 Code bizhub PRO C6500 SD Classification 10. SERVICE MODE Code SD Classification Field Service Ver1.0 Sep.2006 Field Service Ver1.0 Sep.2006 Symbol Display and signal source Multi code Name Code FS-503 bizhub PRO C6500 SD Classification 10.SERVICE MODE Code Paper feed conveyance Classification Field Service Ver1.0 Sep.2006 Multi code Symbol Field Service Ver1.0 Sep.2006 Code bizhub PRO C6500 Paper feed conveyance Classification 10. SERVICE MODE Code SD Classification Field Service Ver1.0 Sep.2006 71 Symbol Field Service Ver1.0 Sep.2006 Multi code Code bizhub PRO C6500 SD Classification 10. Positive terminal: Test pin No. LED on: Multi feed not occurred (Number of paper: 0 or 1) LED off: Multi feed occurred (Number of paper: 2) 12. Insert one more sheet of paper (total: two sheets) that the customer uses mainly, and make sure that the LED turns off. 13. If the detection does not work properly, return to Step 7 and perform the adjustment again. Then, turn the PIDB volume (VR2) so that the voltage becomes 1.0 V lower than that of acquired in Step 9. 14.