Oki MB770 Service Manual

45641001TH Rev.1
v /
Oki Data CONFIDENTIAL
2. General Precautions at Service
- Be sure to turn the power OFF and unplug the power cable during service (except for the
service should be done with the power turned ON).
- Unplug the power cable and clean the area around the prongs of the plug and socket outlet
once a year or more. A fire may occur when dust lies on this area.
- Whenthepartsaredisassembled,reassemblyisthereverse ofdisassemblyunless
otherwise noted in this manual or other related documents. Be careful not to install small
partssuchasscrews,washers,pins,E-rings,starwashers,harnessesinthewrongplaces.
- Basically,theequipmentshouldnotbeoperatedwithanypartsremovedordisassembled.
- The PC board must be stored in an anti-electrostatic bag and handled carefully using a
antistatic wrist strap since the ICs on it may be damaged due to static electricity.
Caution: Beforeusingtheantistaticwriststrap,unplugthepowercableoftheequipment
andmakesurethattherearenochargedobjectswhicharenotinsulatedinthe
vicinity.
- Be sure not to touch high-temperature sections such as the fuser unit and areas around
them.
- Besurenottotouchhigh-voltagesectionssuchasthechargers,transferbelt,developer,
high-voltagetransformer,andpowersupplyunit.Especially,theboardofthese
componentsshouldnotbetouchedsincetheelectricchargemayremaininthecapacitors,
etc. on them even after the power is turned OFF.
- Makesurethattheequipmentwillnotoperatebeforetouchingpotentiallydangerousplaces
(e.g.rotating/operatingsectionssuchasgears,beltspulleys,andfans).
- Be careful when removing the covers since there might be the parts with very sharp edges
underneath.
- WhenservicingtheequipmentwiththepowerturnedON,besurenottotouchlivesections
and rotating/operating sections.
- Usedesignatedjigsandtools.
- Userecommendedmeasuringinstrumentsorequivalents.
- Return the equipment to the original state and checkthe operation when the service is
finished.
- Be very careful to treat the touch panel gently and never hit it. Breaking the surface could
cause malfunctions.
3. Important Service Parts for Safety
- The door switch,fuse, thermostat, thermofuse,thermistor,batteries,IC-RAMsincluding
lithium batteries, etc. are particularly important for safety. Be sure to handle/install them
properly.Ifthesepartsareshort-circuitedandtheirfunctionsbecomeineffective,theymay
result in fatal accidents such as a burnout. Avoid short-circuiting and do not use parts not
recommendedbyOKIDATACorporation.

Oki MB770 Specifications

General

Brand	Oki
Model	MB770
Category	All in One Printer
Language	English