Logitech OB450 REVISED EDITION-B, MSZ-A09NA service manual Indoor electronic control P.C.Board

Page 20

C Check of indoor electronic control P.C. board and indoor fan motor

Turn OFF the power supply.

Remove indoor fan motor connector CN211 and vane motor connector CN151 from the indoor electronic control P.C. board and turn ON the power supply.

Does the unit operate with the remote controller? Does OPERATION INDICATOR lamp light up by pressing EMERGENCY OPERATION switch?

No

Turn OFF the power supply.

Check both “parts side” and “pattern side” of the indoor electronic control P.C. board visually.

Measure the resistance between

 

 

 

 

 

Short/open circuit:

CN211 and of the indoor fan motor

 

 

 

 

Replace the indoor fan motor.

connector.

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

Measure the resistance of the horizon-

 

 

Short/open circuit:

tal vane motor coil.

 

 

Replace the horizontal vane motor and the

 

 

(Refer to 8-5.)

 

 

indoor electronic control P.C. board.

 

 

 

 

Replace the indoor electronic control P.C. board.

Yes

Are the varistor (NR11) burnt and the fuse (F11)

blown?No

Be sure to check both the fuse and the varistor in any case.

Is the fuse (F11) blown

only?No

Yes

Measure the resistance between

(+)and (-) of the indoor fan motor connector (to CN211 on the indoor electronic control P.C. board). 1, 2

Is the resistance 1 MΩ

or more?

No

Yes

1. The fan motor connector's lead wire is red, whereas is black.

2. Connect "+" of the tester to fan motor connector's lead wire, and "-" to lead wire, otherwise the resistance can- not be measured properly.

Replace indoor electronic control P.C. board and the indoor fan motor.

Replace indoor electronic control P.C. board.

Measure the resistance of cement resistor (R111) on the indoor elec-

tronic control P.C. board.

Is the resistance approx.

 

4 Ω?

No

 

Yes

 

 

 

 

 

 

Replace the indoor electronic control P.C. board and the indoor fan motor.

Indoor electronic control P.C.Board

Varistor(NR11)

Fuse(F11)

CN211

Replace the indoor electronic control P.C. board.

20

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Contents Contents Revised EDITION-CMSZ-A24NA MSY-A24NAAccessories Part Names and FunctionsMSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSY-A15NA MSY-A17NA MSZ-A24NA MSY-A24NASpecification Operating Range Outlet AIR Speed and Coverage RangeOutlines and Dimensions MSZ-A09NA MSY-A15NAMSZ-A12NA MSY-A17NA MSZ-A15NA MSZ-A17NA Unit inchMSZ-A24NA Wiring Diagram Refrigerant System Diagram MSZ-A09NA MSZ-A12NAMSZ-A15NA MSY-A15NA MSZ-A17NA MSY-A17NAService Functions Timer Short ModeHow to modify the remote controller P.C. board P.C. Board Modification for Individual OperationTroubleshooting How to release Auto Restart FunctionAuto Restart Function OperationTroubleshooting procedure How to replace batteriesInformation for Multi System AIR Conditioner Outdoor Unit MXZ seriesFailure Mode Recall Function Indoor unit failure mode table Instruction of Troubleshooting StartTroubleshooting Check Table 15/17Trouble Criterion of Main Parts MXZ typeTroubleshooting Flow Check of indoor fan motorMSZ-A24NA MSY-A24NA MSZ-A09/12/15/17NA MSY-A15/17NAIndoor electronic control P.C.Board How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Test point diagram and voltage Power monitor receiver P.C. boardIndoor electronic control P.C. board SW P.C. boardMSZ-A24NA MSY-24NA Display P.C. board Receiver BoardDisassembly Instructions Removing the panel PhotoOperating Procedure Photos Removing the electrical box PhotoRemoving the horizontal vane motor unit Photo Removing the indoor fan motor and the line flow fan PhotoMSZ-A24NA MSY-A24NA Operating Procedure Photos Removing the front panelRemoving the electronic control P.C. board, the receiver Board and the display P.C. boardRemoving the vane motor Removing the line flow fan and the indoor fan motorParts List Accessory and Remote ControllerNozzle Assembly Power Monitor Receiver Board HolderRoom Temperature Switch HolderAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Indoor Heat ExchangerUnion GAS Union LiquidSee Indoor Unit Functional Parts and Electrical Parts MAC-2300FT Catechin AIR Filter Right AIR Cleaning MAC-415FT-E MSZ-A MSY-ARemote KM06C Controller KM07LCover ElectronicControl P.C Indoor CoilIndoor Heat ExchangerE12 815 E12 155 Ø1/2 E12 151Catch Screw CAPCatechin AIR Filter PC/ SETAssembly Remote Controller KM06DVane Motor Vertical Vane Motor HorizontalAIR Cleaning Filter ANTI-ALLERGY Enzyme Filter Microprocessor Control Indoor Unit Display SectionCool Operation DRY OperationHeat Operation MSZ FAN Operation MSYFuzzy control Auto Change Over ··· Auto Mode Operation MSZMode selection Auto Vane Operation MSZ-A09/12/15/17 MSY-A15/17MSZ-A24 MSY-A24 UpwardVertical vane MSZ-A24, MSY-A24 3 4 Swing 5Timer Operation Program TimerChanging temperature indication F/C EMERGENCY/TEST OperationMSZ-ANA- MSY-ANA Made in Japan

MSZ-A09NA, OB450 REVISED EDITION-B specifications

The Logitech MSZ-A09NA, OB450 Revised Edition-B stands as a testament to professional-grade technology, designed for both home and office productivity. This advanced device combines functionality with sleek design, making it an essential tool for users demanding efficiency and performance.

At its core, the Logitech MSZ-A09NA is equipped with state-of-the-art input technologies that enhance user experience. Whether you are a gamer, an avid typist, or a creative professional, this model caters to diverse needs. The mouse features an ergonomic shape that allows for hours of comfortable use, while the advanced optical sensor ensures precision tracking on various surfaces.

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In summary, the Logitech MSZ-A09NA, OB450 Revised Edition-B excels in providing a blend of comfort, customization, and connectivity. Its thoughtful design and advanced technology make it an exceptional choice for anyone looking to enhance their computing experience. Whether for professional work, gaming, or everyday tasks, this mouse is equipped to meet the demands of modern users, offering both reliability and style.
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