Sharp M450 U Servisní příručka

Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace these parts withspecified ones for maintaining the safet

MX-M350/M450 N/U SPECIFICATIONS 3 - 1[3] SPECIFICATIONS1. Basic SpecificationA. Base Engine(1) Form(2) Engine speed* Paper feed from Manual bypass

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 54c-1. CCD lens1) Remove the table glass.2) Remove the dark-box cover.3) Remove the len

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 55B. Major parts and signal functionsSCNcntPWBSPFPWB1+24V3CNDBB6B-PH-K-S23/B546+24V3/AA

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 56C. Operational descriptions(1) Document feed, transport, scan, paper exit, and operat

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 57D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 58a. SPF unit1) Remove the rear cabinet of the scanner section.2) Disconnect the connec

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 59a-6. SPF original length sensor 1a-7. SPF original length sensor 21) Remove the OC co

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 60a-11. CIS unita-12. CIS control PWB1) Remove the upper transport unit cover. 2) Remov

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 61a-16. SPF motor1) Remove the OC cover. 2) Remove the SPF lower cover.3) Remove the or

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 62a-19. SPF original paper feed solenoida-20. SPF original paper feed clutch1) Remove t

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 63B. Major parts and signal functions13ORSPDORSLED2OCSW21LcdD1-12YH11830LcdD0+18LcdD3+1

MX-M350/M450 N/U SPECIFICATIONS 3 - 2B. Document Feeding Equipment(1) One-drawer tray (included in the base engine)C. Output Equipment (1) Face-do

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 64C. Maintenance and parts replacementa. Original detection unita-1. Original size dete

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 652) Remove the scanner left cabinet.3) Remove the scanner right cabinet.4) Remove the

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 66b-3. LCD INV-J PWB1) Disconnect each cables.2) Remove the LCD INV-J PWB.b-4. LCD uni

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 679. FilterA. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 6810. Drive sectionA. Maintenance and parts replacement(1) Maintenance list(2) Maintena

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 693) Remove the screw, and remove the slide rail.4) Remove the connector and the screw,

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 704) Remove the connector, the paper cassette paper feed clutchunit, the paper transpor

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 714) Remove the connector, and remove the screw.5) Remove the screw, and remove the rea

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 72a-3. Relay PWB1) Remove the power unit.2) Remove the connector and the bushing, and r

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 73b-3. Fuse PWB1) Remove the screw, and remove the rear cabinet.2) Remove the connector

MX-M350/M450 N/U SPECIFICATIONS 3 - 3b. Paper Input*1: For printing, PS driver bundled with the Windows is required.c. Paper Output*1: For printin

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 743) Release the lock, and remove the MFP controller PWB unit.4) Remove the screw, and

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 752) Remove the connector and the screw, and remove the PCUPWB.∗ When replacing the PCU

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 762) Remove the screw, and remove the rear cabinet.3) Remove the screw, and remove the

MX-M350/M450 N/U ADJUSTMENTS 8 - 1[8] ADJUSTMENTS1. Process sectionA. Doctor gap adjustmentThis adjustment is performed in the following cases:• Whe

MX-M350/M450 N/U ADJUSTMENTS 8 - 29) Move the adjustment plate in the arrow direction and adjust.<Adjustment specification>C. High voltage out

MX-M350/M450 N/U ADJUSTMENTS 8 - 32. Image check, adjustment(1) Copy image check 1) Place a test chart (UKOG-0089CSZZ) on the reference posi-tion of

MX-M350/M450 N/U ADJUSTMENTS 8 - 4<Specification><2> Print off-center adjustmentItems which must have been completed before this adjust-

MX-M350/M450 N/U ADJUSTMENTS 8 - 5When the set value is increased, the warp amount of paper isincreased. When the adjustment value is decreased, the

MX-M350/M450 N/U ADJUSTMENTS 8 - 6<Specification>B. Adjustment on the scanner side<1> OC scan distortion adjustmentItems which must have

MX-M350/M450 N/U ADJUSTMENTS 8 - 7<Specification><3> SPF scan distortion adjustmentItems which must have been completed before this adju

MX-M350/M450 N/U SPECIFICATIONS 3 - 4*1: For printing, PS driver bundled with the Windows is required.(5) Macintosh driver functionsa. General*1:

MX-M350/M450 N/U ADJUSTMENTS 8 - 8 <Specification><5> SPF scan magnification ratioItems which must have been completed before this adjus

MX-M350/M450 N/U ADJUSTMENTS 8 - 9<6> OC scan lead edge adjustmentItems which must have been completed before this adjust-ment.• Adjustment on

MX-M350/M450 N/U ADJUSTMENTS 8 - 10<Display values 1><Set values 2>∗ With the above + 10, the SPF enters the duplex mode (DD),making dup

MX-M350/M450 N/U ADJUSTMENTS 8 - 11B. Vertical image distortion balance adjustment(Copy lamp unit installing position adjustment)1) Insert the front

MX-M350/M450 N/U ADJUSTMENTS 8 - 124) Loosen the fixing screw of the front or the rear frame mirrorbase drive pulley.5) Tighten the fixing screw of

MX-M350/M450 N/U ADJUSTMENTS 8 - 13H. Image density adjustmentThe image density adjustment is required for the following copyquality mode by using t

MX-M350/M450 N/U ADJUSTMENTS 8 - 142) Press the COPY button to make a copy.Check that the copy density is as shown in the table below. If not, chang

MX-M350/M450 N/U ADJUSTMENTS 8 - 15(Fax mode image density adjustment items)(Fax mode density)The print density settings should be normally left at

MX-M350/M450 N/U ADJUSTMENTS 8 - 16b. Adjust the fax mode print density (standard mode/small-character mode/super fine mode/600dpi mode)This adjustm

MX-M350/M450 N/U ADJUSTMENTS 8 - 173) Using the numeric keypad, select the number that corre-sponds to the adjustment item. Choose from numbers 3 t

MX-M350/M450 N/U SPECIFICATIONS 3 - 5(6) CompatibilityB. Image send function(1) Mode* PC-FAX/PC-Internet-Fax is allowed.(2) Support system(3) Supp

MX-M350/M450 N/U SIMULATION 9 - 1[9] SIMULATION1. Outline and purposeThe simulation has the following functions to grasp the machineoperating status

MX-M350/M450 N/U SIMULATION 9 - 2YESNONOYESYESYESNONONOYESNOYESYESNONOYESYESNOStandby for entry of SIMsub codeEnter SIM sub code withthe 10-key.Pres

MX-M350/M450 N/U SIMULATION 9 - 3B. Simulation list(1) Main/ SubCodeFunction (Purpose)Main Sub1 1 Used to check the operations of the scanner (read)

MX-M350/M450 N/U SIMULATION 9 - 424 3 Used to clear the number of use of the finisher, SPF, and the scan (reading) unit.4 Used to reset the maintena

MX-M350/M450 N/U SIMULATION 9 - 546 15 Used to adjust the print density in the FAX mode (each super fine mode). (Only when FAX is installed.)16 Used

MX-M350/M450 N/U SIMULATION 9 - 665 1 Used to adjust the touch panel (LCD display section) detection position.2 Used to check the result of the touc

MX-M350/M450 N/U SIMULATION 9 - 7C. DetailsOperation/Procedure1) Select the operation mode with 10-key.2) Press START key.The scanner performs scann

MX-M350/M450 N/U SIMULATION 9 - 8Operation/Procedure1) Select the number corresponding to the target of operationcheck with 10-key.2) Press START ke

MX-M350/M450 N/U SIMULATION 9 - 9(Built-in finisher)(Console finisher)( ) : Added when the punch unit is installed.Operation/Procedure1) Select the

MX-M350/M450 N/U SIMULATION 9 - 10Operation/ProcedureThe operating conditions of the sensors and detectors are dis-played.The active sensors and det

MX-M350/M450 N/U SPECIFICATIONS 3 - 6(7) Functions*1: Model without HDD installed(8) Transmission method(9) Record size(10) F code transmissionMod

MX-M350/M450 N/U SIMULATION 9 - 11<Desk><LCC>Operation/Procedure1. Select the number corresponding to the target of operationcheck with

MX-M350/M450 N/U SIMULATION 9 - 12Operation/ProcedureThe LCD is changed as shown below. (The contrast changesevery 2sec from the current level to MA

MX-M350/M450 N/U SIMULATION 9 - 13*1: Displayed when OPTION of multi-purpose only.*2: Displayed when manual feed OPTION is added.Operation/Procedure

MX-M350/M450 N/U SIMULATION 9 - 14Operation/Procedure1) Enter the intermittent aging cycle (unit: sec) with 10-key.2) Press [START] key.The time ent

MX-M350/M450 N/U SIMULATION 9 - 15Operation/Procedure1) Enter the number corresponding to the adjustment item with10-key.2) Press [START] key.3) Ent

MX-M350/M450 N/U SIMULATION 9 - 16Operation/Procedure1) Select the number corresponding to the target of the operationcheck with 10-key.2) Press [ST

MX-M350/M450 N/U SIMULATION 9 - 17Operation/Procedure1) Select 1 (YES) with 10-key.2) Press [START] key. (The trouble display is canceled.)Operation

MX-M350/M450 N/U SIMULATION 9 - 18Operation/Procedure1) Select 1 (YES) with 10-key. 2) Press [START] key. (The trouble display is canceled.)Operatio

MX-M350/M450 N/U SIMULATION 9 - 19Operation/ProcedureThe history of paper jams and misfeed is displayed. The misfeed history is displayed sequential

MX-M350/M450 N/U SIMULATION 9 - 20(10 lines, 80 digits = 800 characters)Operation/ProcedureThe trouble history is displayed.The trouble history is d

MX-M350/M450 N/U SPECIFICATIONS 3 - 7(11) Registration-related settings*1: Model without HDD installed(12) Telephone Functions(13) OthersC. Copy f

MX-M350/M450 N/U SIMULATION 9 - 21Operation/ProcedureThe key operator code is displayed.Operation/ProcedureThe values of the finisher counter, the s

MX-M350/M450 N/U SIMULATION 9 - 22Operation/ProcedureThe values of the FAX send counter and the FAX receive counter are displayed.Operation/Procedur

MX-M350/M450 N/U SIMULATION 9 - 23Operation/ProcedureThe values of the counters related to the scan mode and the Inter-net FAX mode are displayed.Op

MX-M350/M450 N/U SIMULATION 9 - 244) Press [START] key. The list of the ON time of the sensors and the detectors of thepaper transport section is pr

MX-M350/M450 N/U SIMULATION 9 - 25Operation/Procedure1) Select the counter to be cleared with 10-key. 2) Press [START] key. The confirmation to clea

MX-M350/M450 N/U SIMULATION 9 - 26* = COPYOperation/Procedure1) Select the counter to be cleared with 10-key. 2) Press [START] key. The confirmation

MX-M350/M450 N/U SIMULATION 9 - 27Operation/Procedure1) Select the counter to be cleared with 10-key.2) Press [START] key.The confirmation to clear

MX-M350/M450 N/U SIMULATION 9 - 28Operation/Procedure1) Press [START] key.The developing motor rotates for 2 min and the toner concen-trations senso

MX-M350/M450 N/U SIMULATION 9 - 29Since this simulation cannot change the Fax destination, use SIM66-2 to change the FAX destination.Operation/Proce

MX-M350/M450 N/U SIMULATION 9 - 30Operation/Procedure1) Enter the number corresponding to whether AMS operation isautomatically performed or nor in

MX-M350/M450 N/U SPECIFICATIONS 3 - 8(7) Copy FunctionYes: Standard FunctionNo: Not available3. B/W Scanner Module (DSPF)(1) Form(2) Resolution /

MX-M350/M450 N/U SIMULATION 9 - 31Operation/Procedure1) Enter the tag number with 10-key.2) Press [START] key.Operation/ProcedureThe operating condi

MX-M350/M450 N/U SIMULATION 9 - 32Operation/Procedure1) Open the manual paper feed guide to the max. width.2) Select MAX POSITION with 10-key.3) Pre

MX-M350/M450 N/U SIMULATION 9 - 33Operation/Procedure1) Open the paper feed tray 2 paper feed guide to the max. widthposition.2) Select MAX POSITION

MX-M350/M450 N/U SIMULATION 9 - 34Operation/Procedure1) Select the number corresponding to the setting mode with 10-key.2) Press [START] key.3) Ente

MX-M350/M450 N/U SIMULATION 9 - 35Operation/ProcedureOperation/ProcedureThe output levels of the temperature thermistor and the humiditythermistor i

MX-M350/M450 N/U SIMULATION 9 - 363) Enter the number corresponding to the paper feed tray to beused with 10-key.4) Press [START] key. (The paper fe

MX-M350/M450 N/U SIMULATION 9 - 37Operation/Procedure1) Select the number corresponding to the copy density adjust-ment level with 10-key. (Select o

MX-M350/M450 N/U SIMULATION 9 - 38Operation/Procedure1) Select the number corresponding to the copy density adjust-ment level with 10-key. (Select o

MX-M350/M450 N/U SIMULATION 9 - 39Operation/Procedure1) Select the adjustment item of FAX EXP. LEVEL with 10-key.2) Press [START] key. 3) Enter the

MX-M350/M450 N/U SIMULATION 9 - 40Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key.∗ Manual

MX-M350/M450 N/U SPECIFICATIONS 3 - 9(4) DSPF/SPF(5) Power Source(6) Dimensions(7) Display device at scanner part(8) Key* For printer(9) Used char

MX-M350/M450 N/U SIMULATION 9 - 41Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U SIMULATION 9 - 42Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U SIMULATION 9 - 43Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U SIMULATION 9 - 44Operation/Procedure(Copy mode selection)1) Select the number corresponding to the copy mode to beadjusted with 10-

MX-M350/M450 N/U SIMULATION 9 - 45Operation/Procedure(Toner save operation YES/NO setting in the auto mode)1) Select "1. AE MODE" with 1-k

MX-M350/M450 N/U SIMULATION 9 - 46Operation/Procedure(Adjustment mode selection)1) Select the number corresponding to the copy mode to beadjusted wi

MX-M350/M450 N/U SIMULATION 9 - 47Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U SIMULATION 9 - 48Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U SIMULATION 9 - 49Operation/Procedure(Scanner mode selection)1) Select the number corresponding to the scanner mode to beadjusted wi

MX-M350/M450 N/U SIMULATION 9 - 50Operation/Procedure1) Select the number corresponding to one of the followingadjustment items with 10-key. (Select

MX-M350/M450 N/U CONSUMABLE PARTS 4 - 1[4] CONSUMABLE PARTS1. Supply system tableA. USA/CanadaB. European Subsidiary/East Europe/Russia/Australia/Ne

MX-M350/M450 N/U SIMULATION 9 - 51Operation/Procedure(Adjustment mode selection)1) Select the number corresponding to the copy mode to beadjusted wi

MX-M350/M450 N/U SIMULATION 9 - 52Operation/ProcedureWhen the sub scanning direction image magnification ratio adjust-ment with SIM 48-1 cannot prov

MX-M350/M450 N/U SIMULATION 9 - 53∗ The copy magnification ratio can be set with the following1) Enter 2 with 10-key.2) Press [START] key.3) Enter t

MX-M350/M450 N/U SIMULATION 9 - 54(Front/rear frame direction void area adjustment)Adjust so that the total of the front/rear direction void areas i

MX-M350/M450 N/U SIMULATION 9 - 556) Enter the above values as the set values of L1 and L2. (Enterthe adjustment values of L1 and L2, and press [P]

MX-M350/M450 N/U SIMULATION 9 - 56Operation/Procedure(Print image off-center position adjustment)1) Enter the number corresponding to the paper feed

MX-M350/M450 N/U SIMULATION 9 - 57Operation/Procedure(Lead edge image loss adjustment) (Table 1)1) Set the front and back surface image loss adjustm

MX-M350/M450 N/U SIMULATION 9 - 58(Table 2)(Table 3)When the total of the above set value and 10 is entered, the modeis changed to the duplex mode (

MX-M350/M450 N/U SIMULATION 9 - 594) Press [START] key.(Table 1)(Table 2)(Table 3)When the total of the above set value and 10 is entered, the modei

MX-M350/M450 N/U SIMULATION 9 - 602) Press [START] key. 3) Enter the adjustment value with 10-key. 4) Press [P] key or [START] key. When [START] key

CAUTIONCautions on laserWave length785 nm+10 nm−15 nmPulse timesNorth America:35 cpm model: (6.2 µs ± 6.2 ns)/7 mm45 cpm model: (4.8 µs ± 4.8 ns)/7 mm

MX-M350/M450 N/U CONSUMABLE PARTS 4 - 22. Maintenance parts listA. USA/CanadaB. Europe/Australia/New Zealand/TaiwanNote: The other maintenance parts

MX-M350/M450 N/U SIMULATION 9 - 61(Scan off-center position adjustment)1) Enter the scan image position adjustment value with 10-key.2) Press [P] ke

MX-M350/M450 N/U SIMULATION 9 - 62Operation/Procedure(Select the scan mode to be adjusted.)1) Enter the number corresponding to the paper feed tray

MX-M350/M450 N/U SIMULATION 9 - 63Operation/Procedure1) Set the SPF paper feed guide to the max. position.2) Select "MAX. POSITION" with 1

MX-M350/M450 N/U SIMULATION 9 - 64Operation/Procedure(Automatic adjustment)1) Select 1 or 2 with 10-key.2) Press [START] key.(Manual feed adjustment

MX-M350/M450 N/U SIMULATION 9 - 65Operation/ProcedureThis simulation is used to change and check the controller softSW. Set this setting to the defa

MX-M350/M450 N/U SIMULATION 9 - 66Operation/ProcedureUsed to check if the LSU delivers output of the sync signal(HSYNC/) or not."NOW CHECKING&q

MX-M350/M450 N/U SIMULATION 9 - 67Operation/Procedure1) Select the number corresponding to the adjustment mode with10-key.2) Press [START] key.3) En

MX-M350/M450 N/U SIMULATION 9 - 68Operation/Procedure1) Select YES/NO of hard disk read/write check.2) Press [START] key.During testing, "EXECU

MX-M350/M450 N/U SIMULATION 9 - 69Operation/Procedure1) Select YES/NO of hard disk (the system area excluded) for-mat.2) Press [START] key.During fo

MX-M350/M450 N/U SIMULATION 9 - 70Operation/ProcedureOperation/Procedure1) Enter the number corresponding to the shading mode to beexecuted.2) Press

MX-M350/M450 N/U CONSUMABLE PARTS 4 - 3C. Agency/Asia/Middle East/Africa/Latin AmericaNote: The other maintenance parts which are not listed above a

MX-M350/M450 N/U SIMULATION 9 - 71Operation/Procedure(Various print patterns output) (Table 1)1) Select PRINT PATTERN with 10-key.2) Enter the numbe

MX-M350/M450 N/U SIMULATION 9 - 72❏: Error diffusion processNote*: Since the "DENSITY" of an actual copy or printer outputdiffers, they di

MX-M350/M450 N/U SIMULATION 9 - 73Operation/ProcedureTouch the four cross marks (+) sequentially. The coordinates ofpressed positions are set.When t

MX-M350/M450 N/U SIMULATION 9 - 74Operation/Procedure1) Enter the number corresponding to the memory to be checkedwith 10-key.2) Press [START] key.I

MX-M350/M450 N/U SIMULATION 9 - 75Operation/Procedure1) Enter the number corresponding to the output mode with 10-key.2) Press [START] key.The outpu

MX-M350/M450 N/U SIMULATION 9 - 76Operation/ProcedureThe paper is automatically selected with the size saved in theimage memory.Operation/ProcedureA

MX-M350/M450 N/U SIMULATION 9 - 77Operation/Procedure1) Enter the number corresponding to the output mode with 10-key.2) Press [START] key.The outpu

MX-M350/M450 N/U SIMULATION 9 - 78Operation/Procedure1) Select the number corresponding to the output mode with 10-key.2) Press [START] key.The sign

MX-M350/M450 N/U SIMULATION 9 - 79(Dial pulse make time setting)1) Enter 1 with 10-key.2) Press [START] key.3) Enter the set value with 10-key.4) Pr

MX-M350/M450 N/U SIMULATION 9 - 80Operation/Procedure1) Enter the DTMF signal (1 - 9, 0, *, #) to be sent with 10-key.2) Press [START] key.The signa

MX-M350/M450 N/U CONSUMABLE PARTS 4 - 4E. ChinaNote: The other maintenance parts which are not listed above are registered as service parts.No. Item

MX-M350/M450 N/U SIMULATION 9 - 81Operation/Procedure1) Select YES/NO of data transfer.2) Press [START] key.Operation/Procedure1) Enter the number c

MX-M350/M450 N/U SIMULATION 9 - 82Operation/Procedure1) Select YES/NO of data clear.2) Press [START] key.Operation/Procedure1) Enter the Modem dial-

MX-M350/M450 N/U SIMULATION 9 - 83Operation/ProcedureThe TEL/LIU state is displayed.When the state is changed, it is highlighted.Operation/Procedure

MX-M350/M450 N/U SIMULATION 9 - 84Operation/Procedure1) Enter the number corresponding to the check mode with 10-key.2) Press [START] key.When check

MX-M350/M450 N/U SIMULATION 9 - 85Operation/ProcedureTo execute this simulation, FAX program writing must be allowed.(Jumpers and DIP SW depending o

MX-M350/M450 N/U SIMULATION 9 - 863. Other related items(1) Simulation adjustment value/ Set value dataEach controller is provided with an EEPROM. T

MX-M350/M450 N/U SIMULATION 9 - 87● Data saved by the scanner control PWB● Data saved by the MFP control PWBCounters Adjustment value OtherScan coun

MX-M350/M450 N/U MACHINE OPERATION 10 - 1[10] MACHINE OPERATION1. Acceptable originalsA stack of up to 50 original sheets (30 original sheets*1 for

MX-M350/M450 N/U MACHINE OPERATION 10 - 24. Specifications of paper traysThe specifications for types and sizes of paper that can be used in each tr

MX-M350/M450 N/U MACHINE OPERATION 10 - 3B. Applicable special paperFor satisfactory results, special paper must conform to the following requiremen

MX-M350/M450 N/U CONSUMABLE PARTS 4 - 52. Production number identificationA. Drum cartridgeThe lot number, printed on the front side flange, is comp

MX-M350/M450 N/U MACHINE OPERATION 10 - 46. Printer settingA. System settings(1) Printer settingsa. Default settingsThese programs are used to adjus

MX-M350/M450 N/U MACHINE OPERATION 10 - 5Network port emulation switchingThis program is used to specify a printer language to emulatewhen the print

MX-M350/M450 N/U MACHINE OPERATION 10 - 6C. Configuration report (Test page)Model name

MX-M350/M450 N/U TROUBLE CODES 11 - 1[11] TROUBLE CODES1. GeneralWhen a trouble occurs in the machine or when the life of a con-sumable part is near

MX-M350/M450 N/U TROUBLE CODES 11 - 2F1 36 Console finisher punch timing sensor troubleWith Console Finisher installedPCU37 Console finisher backup

MX-M350/M450 N/U TROUBLE CODES 11 - 33. Details of trouble codesU7 00 RIC communication trouble ControllerCH -- Door open (CH ON) PCU00 No developer

MX-M350/M450 N/U TROUBLE CODES 11 - 4E7 06 Content Decode error troubleDetail A decode error occurs during making of an image.Cause Data error durin

MX-M350/M450 N/U TROUBLE CODES 11 - 5F1 00 Content Mail-bin stacker communication troubleDetail Communication cable test error after turning on the

MX-M350/M450 N/U TROUBLE CODES 11 - 6F1 15 Content Finisher lift motor troubleDetail Lift motor operation abnormalityCause Motor lockMotor rpm abnor

MX-M350/M450 N/U TROUBLE CODES 11 - 7F1 36 Content Console finisher punch timing sensor troubleDetail Sensor input value abnormalityCause Sensor bre

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 1[5] EXTERNAL VIEWS AND INTERNAL STRUCTURES1. ExteriorNo. Name Function/Operation Note1

MX-M350/M450 N/U TROUBLE CODES 11 - 8F2 39 Content Process thermistor troubleDetail Output value abnormality of the temperature sensor of temperatur

MX-M350/M450 N/U TROUBLE CODES 11 - 9F6 98 Content Combination error of the FAX-BOX destination information and the machine destination informationD

MX-M350/M450 N/U TROUBLE CODES 11 - 10H5 01 Content 5-time continuous POD1 not-reaching jam detectionDetail 5-time continuous POD1 not-reaching jam

MX-M350/M450 N/U TROUBLE CODES 11 - 11U1 01 Content FAX battery abnormalityDetail FAX backup SRAM battery voltage fallCause Battery lifeBattery circ

MX-M350/M450 N/U TROUBLE CODES 11 - 12U2 81 Content Memory check sum error (Scanner)Details Scanner memory check sum errorCause EEPROM troubleEEPROM

MX-M350/M450 N/U TROUBLE CODES 11 - 134. Other related items(1) Self diag operationThe machine always monitors its own status. When it detects anyab

MX-M350/M450 N/U TROUBLE CODES 11 - 14(4) List of trouble modes● Troubles where the machine can be operated under some conditionsWhen a trouble occu

MX-M350/M450 N/U TROUBLE CODES 11 - 15(5) Communication specification when a trouble occursThe image send/receive specifications when a trouble occu

MX-M350/M450 N/U ROM VERSION-UP 12 - 1[12] ROM VERSION-UP1. GeneralA. Version-up target ROM'sThe version-up target ROM's are listed in the

MX-M350/M450 N/U ROM VERSION-UP 12 - 23) Enter the file/folder number of firmware that tries to beupdated with 10-key, and press [START] key.If sele

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 22. InteriorNo. Name Function/Operation1 Duplex module side cover Open when a misfeed ha

MX-M350/M450 N/U ROM VERSION-UP 12 - 35) Press MENU key several time to select an I/F to use fromUSB, Ethernet.(Example)6) Press OK key to display t

MX-M350/M450 N/U ROM VERSION-UP 12 - 4b) Click Reference button and select a ROM program totransfer.c) Select the target machine's port form Se

MX-M350/M450 N/U ROM VERSION-UP 12 - 5YESNOYESNOYESNORemove the BOOT Flash ROM andreplace it with a spare one. (If there isany NG Flash ROM, replace

MX-M350/M450 N/U ROM VERSION-UP 12 - 6YESNOWrite the on-board filescollectively. (4.)Result: OK?Update completedIf the Flash ROM itself isdefective,

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 1[13] ELECTRICAL SECTION1. Block diagramA. System block diagramPOMDELIVERY unPOD1POD2POD3DSW-FDSW-LCFM2VFM2

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 22. Actual wiring chartScanner (1/3)BM50B-SRDS-G-TF3125111319206781415192171016418CN421222324GND2CN12726283

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 3Scanner (2/3)21LcdD1-12YH11830LcdD0+18LcdD3+115LcdDIS/YL52271-307915LcdM-312LcdCP2++24V3LcdS-+24V39LcdCP1+

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 4Scanner (3/3)SCNcntPWBSPFPWB1+24V3CNDBB6B-PH-K-S23/B546+24V3/AAVAREF+5V24B12B-PHDSS-BGND2GND2526GND273SPLS

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 5Engine (1/6)PCUPWBBOARD to BOARDD5D4KEY2LED3\+5V2ENGND2KEY4D1LED1\KEY3D0D6LED2\D2KEY6KEY5D7KEY1R/WRSD31234

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 6Engine (2/6)DSW-FMM-TGND2+5V2GND2MM\DM-TGND2DM\9604S-08C1234567812345678CN9CN6POD3POD1POD2/POMA/POMXAGND2/

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 33. Operation panel*1: MX-M350N/M450N, or when the document filing function has been add

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 7Engine (100V) (3/6)AC/DC PWBCN4LoutNotB03B-XASK-1HL1N21B-1FUSING UNITBRGYHL22HL1GND23BKRTH2GYSRA-51T-42BRR

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 8Engine (200V) (4/6)AC/DC PWBCN4B03B-XASK-121B-1FUSING UNITBRGYHL22HL1GND23BKRTH2GYSRA-51T-42Rth1BRRth2B-4L

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 9Engine (Taiwan) (5/6)AC/DC PWBCN4LoutNotB03B-XASK-1HL-1N2B-1FUSING UNITGYHL2HL1GND23BKSRA-51T-42Rth2HL-Lin

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 10Engine (6/6)PCUPWBGND2+24V2ADMEN1\+5V3GND2ADMCK2\MPFC\ADMEN2\MPFS\DGS\APODAPIDAPPD2APPD1MPWSMPF SETDSW-DM

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 11OPTION (1/1)83947SMP-11V-BC1056117239SMR-11V-B4105812116SMP-18V-NCSMR-18V-N183947105611723941058121161121

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 12DH-LINE (OPTION) (1/1)2(NC)DH-L21CN-A1DH-N(SCN)3CN-C(NC)DH-L(DHSW)B2P3-VHDHRY2VB(+24V)DESKPWB3CNNDHRY1B3B

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 133. Signal name listSignal name Name Function/OperationConnector levelConnector No.Pin NO.PWB nameRemarkL

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 14MCLUD MP tray upper limit sensor signalMP tray upper limit detection— Upper limit 10 9 PCUMCM_T Multi-pur

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 15RXD_DSK Serial I/F data (DESK) Serial I/F data (DESK-PCU PWB)— — 11 14 PCURXD_FIN1 Serial I/F data (FINIS

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 16XDTR_FIN1 Serial communication control signalSend control — — 11 3 PCUXDTR_FIN2 Serial communication cont

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 44. Job status screen (common to print, scan, fax and Internet fax)This screen is displa

MX-M350/M450 N/U ELECTRICAL SECTION 13 - 17*1: Multi paper feed tray vertical size detection*2: OptionsXSYNC LSU horizontal sync detection signal LS

Memo

Memo

Memo

LEAD-FREE SOLDERThe PWB’s of this model employs lead-free solder. The “LF” marks indicated on the PWB’s and the Service Manual mean “Lead-Free” solder

CAUTION FOR BATTERY REPLACEMENT(Danish) ADVARSEL !Lithiumbatteri – Eksplosionsfare ved fejlagtig håndtering.Udskiftning må kun ske med batteriaf samme

COPYRIGHT © 2007 BY SHARP CORPORATIONAll rights reserved.Printed in Japan.No part of this publication may be reproduced,stored in a retrieval system,

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 55. BASE SCREENTo display the base screen of a mode, touch the [IMAGE SEND] key in the t

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 6B. Address book screenIf you have set the initial screen to the address book screen usi

CONTENTS[1] GENERAL1. Different points of MX-M350N/350U series from AR-M355/M455 . . . . . . . . . . . . . . . . . . . . . . . . .1-12. Note for serv

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 76. Cross sectional viewA. Scanner unitB. EngineNo. Name No. Name1 CIS unit 10 Copy lamp

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 87. Switch, SensorA. Scanner unitB. EngineCode Name Active condition1 SPPD SPF original

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 98. PWBA. Scanner unitB. EngineNo. Name Function/Operation1 SPF control PWB SPF control2

MX-M350/M450 N/U EXTERNAL VIEWS AND INTERNAL STRUCTURES 5 - 109. Motor, Clutch, SolenoidA. Scanner unitB. EngineNo. Name Function/Operation1 SPFM SP

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 1[6] UNPACKING AND INSTALLATION1. Installing procedure flowchartThere are many combinations between

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 22. Note for installation placeImproper installation may damage this product. Please note thefollowi

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 34. Unpacking and installation of the desk unitNote: In advance to installation of the machine, the

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 4<2> Pull out the upper paper tray of the stand/paper drawer until itstops and attach the fron

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 5B. AR-D27<Before installation>• Start installation after checking that the DATA and COMMUNI-C

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 6<3> Reattach the paper tray of the main unit.5) Connect the power supply I/F harness to the P

[7] MAINTENANCE AND DETAILS OF EACH SECTION[Maintenance System Table] . . . . . . . . . . . . . . . . . . . . . . .7-11. Engine section . . . . . . .

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 72) Put the main unit of the printer on the multi purpose drawer.<1> Pull out the paper tray o

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 8<3> Remove the filament tape that secure the the power supply I/F harness.5) Connect the harn

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 95. Unpacking and installation of the rack (AR-RK2)1) Attach the rack to the desk unit.★ Be sure to

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 104) While rotating the MG roller, supply developer into the devel-oper cartridge evenly.Note that t

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 112) While pressing the paper holding plate, remove the fixing pin.3) Put paper in the tray, and clo

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 125) Connect the cable.Connect the scanner unit connector with the printer connector,and fix the con

MX-M350/M450 N/U UNPACKING AND INSTALLATION 6 - 13• Case of Fig. 2Shift the cam A in the direction of B by the difference of the image.For one scale

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 1[7] MAINTENANCE AND DETAILS OF EACH SECTION• Self print of set valuesUse of SIM 22-6 a

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 22. Scanner / DSPFMaintenance cycle : 200K✕ Check (Clean, replace, or adjust as necessa

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 33. Peripheral devicesMaintenance cycle : 50K✕ Check (Clean, replace, or adjust as nece

MX-M350/M450 N/U GENERAL 1 - 1[1] GENERAL1. Different points of MX-M350N/350U series from AR-M355/M455• Adopted new operation panel with 8.9 inch LC

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 4[DETAILS OF EACH SECTION]1. Process sectionA. GeneralToner is attached to electrostati

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 5Process Section Composition and Applying VoltageComposition of process section30-500V(

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 6[OPC drum section]A. GeneralIn this section the laser beam expose's the drum. The

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 7C. Operational descriptionsThe OPC drum surface is negatively charged by the main char

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 8D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts repl

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 9a-1. MC unit1) Remove the drum cartridge.2) Check to confirm that the cleaning unit is

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 10a-6. Cleaner blade1) Remove the drum cartridge.2) Remove the drum and the DSD collar.

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 112) Remove the connector and the screw, and remove the PCUPWB unit.3) Remove the screw

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 12DM8FE-BT-VK-NDSW-LDM-TDM\56DSW-LGND23214GND2DMCLK\(NC)87PCU PWB12345678DM-TGND2DM\CN6

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 13C. Operational descriptions1) Toner image transferToner images formed on the drum by

MX-M350/M450 N/U CONFIGURATION 2 - 1[2] CONFIGURATION1. System configurationA. Basic system* To install the AR-MU2, the exclusive-use desk is requir

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 14D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 15a-2. Discharge plate1) Remove the transfer roller unit.2) Remove the screw, and remov

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 16[Developing section]A. GeneralIn this section, toner is attached to electrostatic lat

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 17C. Operational descriptionsElectrostatic latent images formed on the OPC drum by the

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 18D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 19a-1. Developer1) Remove the DV cartridge.2) Remove the screw, and remove the DV cover

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 20a-5. Toner density sensora-6. Humidity sensor1) Remove the DV cartridge.2) Remove the

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 212. Fusing sectionA. GeneralThis section explains how the toner is fused to the paper

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 22C. Operational descriptions(1) Fusing unit driveTo drive the fusing unit, the drive p

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 23The fusing heat roller (heating) is provided with two heater lamps,which heat the fus

MX-M350/M450 N/U CONFIGURATION 2 - 2B. Option lineupFor combinations of options, refer to "C. List of combination of peripheral devices" d

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 24(2) Maintenance and parts replacementa. Fusing unit1) Pull out the left door.2) Remov

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 25a-3. Thermistor1) Remove the fusing unit.2) Remove the screw, and remove the fusing d

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 26a-8. Upper heat rollera-9. Upper heat roller gear1) Remove the fusing unit.2) Open th

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 27B. Major parts and signal functions+24V1TRC\LUMAPEDCPFC\PPD1CSSLUMBLUDRRC\GND2+5V2GND

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 28C. Operational descriptions[Paper feed operation](1) Preliminary operation except for

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 29(3) Paper detection method of each tray1) Machine 1st trayPaper detection is performe

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 30[Paper remaining quantity detection](1) Paper remaining quantity detectionPaper remai

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 31D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 323) Disengage the pawl, and remove the pickup roller and thepaper feed roller.4) Disen

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 333) Remove the E-ring, the gear, and the spring.4) Remove the screw, and remove the li

MX-M350/M450 N/U CONFIGURATION 2 - 3(2) Other optionsSTD: Standard provision ❍: Installable ✕: Not available*1: The Network expansion kit (MX-NBX2/N

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 34B. Major parts and signal functionsDSW-FMM-TGND2+5V1GND2MM\9604S-08C12345678CN9DSW-FG

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 35C. Operational descriptions[Paper transport path and paper exit]Paper transport path

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 363. Paper transport in duplex printing (with AR-DU3/DU4 installed)(1) Switchback opera

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 37D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 38a-1. Paper dust remover unit1) Open the front door.2) Remove the paper dust cleaner u

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 394) Remove the screw and the connector, and remove the papertransport detector.5) Remo

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 40d. Paper exit reverse unit1) Pull out the left door.2) Remove the screw, and remove t

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 41d-2. Paper exit motor1) Remove the paper exit reverse unit.2) Remove the connector an

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 42d-8. Paper exit roller1) Remove the paper exit reverse unit.2) Remove the screw, and

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 435. Laser scanner sectionA. GeneralImage data sent from the MFP (image process circuit

MX-M350/M450 N/U CONFIGURATION 2 - 4C. List of combination of peripheral devicesAs shown in the table below, some other peripheral devices (B) may b

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 44C. Operational descriptions[Laser optical path]∗ The LSU must not be disassembled in

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 454) Remove the screw, and remove the rear cabinet.5) Remove the connector, the screw,

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 466. Scanner sectionA. GeneralThere are following three methods of scanning documents i

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 47B. Major parts and signal functions+5V2MHPS2GND213S3B-PH-K-SBLGYLBGND2S3B-EH+5V2312MH

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 48C. Operational descriptions(1) CCD/lens unitThis machine employs the reduction optica

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 49(3) Image signal flowThe image signal converted into electric energy (analog signal)

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 50D. Maintenance and parts replacement(1) Maintenance list(2) Maintenance and parts rep

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 51a. Scanner unita-1. OC1) Remove the OC cover.a-2. Dust-proof glassa-3. Table glassa-4

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 522) Pull out the harness from the scanner control PWB. 3) Remove the scan motor.a-11.

MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 53b-1. Reflectorb-1. Mirror1) Remove the table glass. 2) Clean the reflector and the mi