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Oki MB280 Service Manual

Other manuals for MB280: User Manual, Quick Start Manual
Manual is about: Oki MB280: User Guide

Summary of MB280

  • Page 1

    Mb280 / mb290 service manual.

  • Page 2: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document i table of contents 1. Detailed section descriptions ....................................... 1-1 1.1 component layout .......................................................................... 1-1 1.1.1 mechanica...

  • Page 3: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document ii 2.3.5 thermistor.............................................................................. 2-11 2.3.6 hot roller strippers.......................................................... 2-11 2.3.7 thermostat......

  • Page 4: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-1 d e tailed d escr iptions 1. Detailed section descriptions 1.1 component layout 1.1.1 mechanical components no. Name description a laser unit consists of the laser diode...

  • Page 5: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-2 1.2 printing 1.2.1 printing processes around the drum this machine uses a “write to black” system, using negative toner. Charge: the charge brush roller [a] gives the op...

  • Page 6: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-3 d e tailed d escr iptions 1.2.2 charge the opc (organic photoconductor) drum [a] used in this machine is small in diameter. This allows a very compact design. A charge r...

  • Page 7: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-4 1.2.3 laser exposure overview laser unit layout a : laser diode unit f : laser synchronization detector b : polygon mirror motor g : cylindrical lens c : f-theta lens h ...

  • Page 8: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-5 d e tailed d escr iptions block diagram the engine board controls the laser diode power (apcsh) and transfers data for printing to the laser diode (video). As an electri...

  • Page 9: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-6 1.2.4 development overview this machine uses mono-component toner, which is composed of resin and ferrite. The toner mixing bar [a] stirs and carries toner to the toner ...

  • Page 10: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-7 d e tailed d escr iptions the voltage to the development roller and the toner application roller is supplied through the terminals ([a] for the development roller and [b...

  • Page 11: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-8 toner end detection this machine does not have toner end detection..

  • Page 12: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-9 d e tailed d escr iptions 1.2.5 transfer and separation overview this machine uses a transfer roller [a], which touches the opc drum [b] surface. A constant current is a...

  • Page 13: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-10 1.2.6 drum cleaning the cleaning blade and the used toner tank are contained in the toner cartridge. The discharge lamp and a counter blade system is used for drum clea...

  • Page 14: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-11 d e tailed d escr iptions 1.2.7 paper feed and registration overview paper feed system: feed roller [a] and friction pad [b] paper lift mechanism: bottom plate with spr...

  • Page 15: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-12 paper feed drive mechanism the feed roller [a] is located above the upper tray bottom plate [b], and the friction pad [c]. It allows only one sheet to feed from the pap...

  • Page 16: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-13 d e tailed d escr iptions paper feed operation a : paper feed drive gear d : friction pad b : paper feed clutch e : paper feed sensor c : paper feed roller f : registra...

  • Page 17: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-14 registration the registration sensor [a] detects the leading edge of the paper and synchronizes paper feed with the writing of the image on the drum, so that the image ...

  • Page 18: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-15 d e tailed d escr iptions paper end detection the laser unit [a] has the paper end sensor [b] built into it. The paper end sensor detects the presence or absence of pap...

  • Page 19: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-16 jam detection jam 1. Paper jam at the paper cassette when the registration sensor does not turn on within 2.52 seconds after the paper pick-up clutch for the paper cass...

  • Page 20: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 6 september 2005 エラー ! スタイルが定義されていません。 1-17 d e tailed d escr iptions 1.2.8 fusing overview after the image is transferred, the copy paper enters the fusing unit. The image is fused to the copy paper by applying ...

  • Page 21: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-18 power save control when the main switch is turned on, the machine turns on the fusing lamp. For printing, the machine raises the fusing temperature to 175 ° c. The fusi...

  • Page 22: 1.2.9  Cover Switch

    Printer 3000 304 995 - 01 6 september 2005 エラー ! スタイルが定義されていません。 1-19 d e tailed d escr iptions 1.2.9 cover switch when the front door is opened, the interlock switch will be opened and power supply to the following parts will be cut. • power pack • laser diode driver • fan motor • main motor • poly...

  • Page 23: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-20 1.2.10 paper feed drive release and fusing drive release the main motor drives the paper feed unit, the transfer roller, the toner cassette, and fusing unit through a s...

  • Page 24: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document エラー ! スタイルが定義されていません。 6 september 2005 1-20 1.2.10 paper feed drive release and fusing drive release the main motor drives the paper feed unit, the transfer roller, the toner cassette, and fusing unit through a s...

  • Page 25: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-2 2.1 paper cassette 2.1.1 paper cassette [a]: paper cassette side fence [b]: side fence gear (pull it out) [c]: side fence – left unhook at the rear. [d]: side fence – right unhook at the rear. Note: lift the ...

  • Page 26: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-3 r e placement ad ju s tm e n t bottom plate [e]: bottom plate unhook at both sides of the cassette [f]. Detach from the pin [g] at both sides. Friction pad [h]: friction pad (two hooks) note: be careful not t...

  • Page 27: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-4 2.2 laser unit warning for the laser unit this machine contains a laser beam generator. Laser beams can cause permanent eye damage. Do not open the laser unit or look along the laser beam path while the main ...

  • Page 28: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-5 r ep la ce m en t a dj us tm ent caution vorsicht >ps cation-class 3b laser radiation when open avoid exposure to the beam vorsicht-laserstrahlung klasse 3b wenn abdeckung geoffnet nicht dem strahl aussetzen ...

  • Page 29: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-5 r e placement ad ju s tm e n t caution vorsicht >ps cation-class 3b laser radiation when open avoid exposure to the beam vorsicht-laserstrahlung klasse 3b wenn abdeckung geoffnet nicht dem strahl aussetzen 3b...

  • Page 30: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-7 r e placement ad ju s tm e n t 2.3.2 paper exit assembly [a]: fusing cover (1 screw) [b]: paper exit assembly (2 screws [circled in blue in the lower diagram]) g182r010.Jpg g182r012.Jpg g182r011.Jpg [a] [b].

  • Page 31: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-8 2.3.3 fusing lamp and hot roller preparation: • remove the paper exit assembly ( * 2.3.2). Fusing lamp [a]: fusing lamp (2 screws) note: do not touch the surface of the fusing lamp with bare hands. Reassembly...

  • Page 32: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-9 r e placement ad ju s tm e n t hot roller [a]: electrode (1 screw) [b]: hot roller (pull it out) note: do not touch the surface of the hot roller with bare hands. Note: when re-assembling, be careful not to d...

  • Page 33: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-10 2.3.4 pressure roller preparation: • remove the paper exit assembly ( * 2.3.2). • remove the fusing lamp and hot roller ( * 2.3.3). [a]: pressure roller (1 bushing [b] and 1 spring [c] at each side) note: wh...

  • Page 34: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-11 r e placement ad ju s tm e n t 2.3.5 thermistor preparation: • remove the paper exit assembly ( * 2.3.2). [a]: thermistor (1 screw) note: when reassembling, do not damage the thermistor, and check that the e...

  • Page 35: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-12 2.3.7 thermostat preparation: • remove the paper exit assembly ( * 2.3.2). • remove the fusing lamp and hot roller ( * 2.3.3). [a]: thermostat (2 screws) g182r024.Jpg g182r025.Jpg [a].

  • Page 36: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document i printer model-l1 （ g191 ） service manual technical document 2-13 r e placement ad ju s tm e n t 2.4 paper feed 2.4.1 paper feed roller removal preparation: 1) remove the upper unit. (see upper unit removal.) [a...

  • Page 37: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-14 remove the paper feed roller [c] from the shaft. G182r031.Jpg.

  • Page 38: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-15 r e placement ad ju s tm e n t 2.4.2 registration roller (also known as ‘roller driven’ in the parts catalog) preparation: 1) remove the upper unit. (see upper unit removal) 2) remove the paper tray 3) remov...

  • Page 39: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-16 2.5 others 2.5.1 transfer roller preparation: 1) remove the upper unit. (see upper unit removal.) 2) remove the toner cartridge. [a]: transfer roller [b]: black bushing remove the transfer roller with a flat...

  • Page 40: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-18 2.5.3 main motor removal preparation: 1) remove the upper unit. (see upper unit removal.) 2) remove the paper tray. 3) remove the toner cartridge. 4) remove the laser unit ( * 2.2). [a]: paper tray guides (2...

  • Page 41: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-18 2.5.3 main motor removal preparation: 1) remove the upper unit. (see upper unit removal.) 2) remove the paper tray. 3) remove the toner cartridge. 4) remove the laser unit ( * 2.2). [a]: paper tray guides (2...

  • Page 42: Printer Model-L1

    Printer 3000 304 995 - 01 i printer model-l1 （ g191 ） service manual technical document 2-19 r e placement ad ju s tm e n t 2.5.4 discharge lamp-ass’y removal preparation: 1) remove fusing unit. (see upper unit removal). [a]: ground wire-bracket-discharge lamp (1 screws) [b]: harness-discharge lamp ...

  • Page 43

    Printer 3000 304 995 - 01 2-20 2.6psu (known as ‘power supply unit’ in the parts catalog) 2.6.1psu removal preparation 1) remove the upper unit. (see upper unit removal.) 2) remove the paper tray. 3) remove the toner cartridge. 4) remove the right & left shield ( * 2.5.3). [a]: psu (9 screws & 4 con...