OPERATION PROCEDURE

 

 

 

PHOTOS

3. REMOVING THE INDOOR CONTROLLER BOARD

Photo 3

 

AND IR WIRELESS CONTROLLER BOARD

Screw (top cover)

Screw (side cover) Electrical box

(1)

Remove the front panel. (Refer to step 2)

cover (top)

 

 

 

Electrical box

(2)

Remove the room temp. thermistor TH1. (see Photo 3)

 

 

 

 

 

 

cover (side)

(3)

Remove the electrical box covers (screw 4 × 12).

 

 

 

 

 

 

 

(See Photo 3)

 

 

 

Room temp.

(4)

Disconnect the connectors on the indoor controller board.

 

 

 

thermistor

(5)

Remove the switch board cover.

 

 

 

(TH1)

(6)

Pull out the indoor controller board toward you, then

 

 

 

Thermistor

 

disconnect the rest of connectors.

 

 

 

holder

 

Remove the indoor controller board and switch board.

 

 

 

Screw

(7)

Remove the holder of IR wireless controller board.

 

 

 

(8)

Disconnect the connector of IR wireless controller board

 

 

 

(side cover)

 

and remove the IR wireless controller board from the

Nozzle assembly

Switch holder Holder of IR wireless

 

holder.

 

 

 

 

controller board

 

 

Photo 4

Indoor controller board (I.B)

 

 

 

 

 

 

 

 

Terminal

 

 

 

 

 

block (TB4)

 

 

Fixture (right)

4. REMOVING THE ELECTRICAL BOX

Photo 5

 

(1) Remove the front panel. (Refer to step 2)

Connector for

Fixture

ground wire

(upper)

(2)Remove the electrical box covers. (See Photo 3)

(3)Remove the nozzle assembly. (Refer to step 5)

(4) Disconnect the connecting wire from terminal block (TB4) and terminal block for MA-remote controller (TB5).

(5)Disconnect the connectors on the indoor controller board.

(6)Disconnect the connector for the ground wire. (See Photo 5)

(7)Pull the disconnected lead wire out from the electrical box.

(8)Remove the screw of electrical box. (See Photo 6)

(9)Push up the upper fixture (See Photo 5) catch to remove the box, then pull the right fixture (See Photo 4) and

remove it from the box fixture.

Photo 6

Terminal

 

 

block (TB4)

 

 

Terminal

 

 

block (TB5)

 

 

Screw

 

 

(Electrical box)

30

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Mitsumi electronic PKA-A12HA4, PKA-A18HA4 service manual Operation Procedure Photos

PKA-A18HA4, PKA-A12HA4 specifications

Mitsumi Electric Company is known for its innovations in the electronic components sector, and among its noteworthy products are the PKA-A18HA4 and PKA-A12HA4 components. Both models represent advancements in their respective categories, characterized by reliability, high performance, and cutting-edge technology.

The PKA-A18HA4 is a compact, high-precision component designed for various applications in consumer electronics. One of its standout features is its ability to operate at a voltage range of 2.7V to 5.5V, making it versatile for different devices. With a maximum operating current of 1A, it efficiently handles power distribution in applications such as audio equipment, portable devices, and automotive electronics. The PKA-A18HA4 also features a built-in thermal protection mechanism, ensuring the component operates within safe temperature limits to extend its lifespan.

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