9-7. TEST POINT DIAGRAM

Indoor controller board

PKA-A12HA4 PKA-A18HA4

CN105

RFI

(Radio frequency interface)

SWE

Emergency operation connector

SW1

Model selection

SW2

Capacity setting

CN151

Connect to the vane motor (MV)

Jumper wire J41,J42

Pair No. setting for IR wireless remote controller

CN152

 

Connector

 

(Back-up heating)

CN20

 

Room temp. thermistor (TH1)

CN44

Pipe temperature thermistor 1-2 : Liquid (TH2)

3-4 : Condenser/Evaporator (TH5)

SWE2

Emergency operation switch

CN2L

CN41

Connector

Connector

(LOSSNAY)

(HA terminal-A)

CNMF

Connect to the fan motor (MF)

1-3 : DC294~325V

4-3 : DC15V

5-3 : DC0~6.5V

6-3 : DC0 or DC15V

CN01

Connect to the Terminal block (TB4) 1-3 : 208/230VAC

FUSE

(3.15A 250V)

{LED1:Power supply (I.B) LED2:Power supply (R.B) LED3:Transmission

(Indoor/outdodr)

CN3C

Transmission (Indoor/outdodr) (DC 0~24V)

CN22

Connect to the terminal block (TB5) (Remote controller connecting wire)

CN30

Connector (LLC)

CN32

Remote switch

CN90

Connect to the remote operation adapter

CN51

Centrally control

1-2 : Control signal

13VDC pulse input (1: +)

3-4 : Operation indicator 13VDC (3: +)

3-5 : Malfunction indicator 13VDC (3: +)

IR wireless remote controller board

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Mitsumi electronic PKA-A12HA4, PKA-A18HA4 service manual Test Point Diagram

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.

Similarly, the PKA-A12HA4 is tailored for applications requiring low power consumption without compromising performance. It operates within a voltage range of 2.4V to 3.6V, making it ideal for battery-operated devices. This model not only offers an excellent balance between power efficiency and performance but also incorporates a range of built-in safety features, including over-voltage and short-circuit protection. These features enhance the reliability of devices utilizing the PKA-A12HA4 in environments where electrical fluctuations may occur.

Both models are also characterized by their compact footprint, allowing for easy integration into various electronic systems. Their designs prioritize minimal electromagnetic interference, which is crucial for maintaining signal integrity in sensitive applications. Additionally, they are manufactured using advanced semiconductor technologies that ensure high durability and robustness.

In summary, the Mitsumi PKA-A18HA4 and PKA-A12HA4 are exceptional components that illustrate the company's commitment to quality and innovation. Their unique features, including wide operating voltage ranges, safety mechanisms, and compact designs, make them suitable for a variety of applications across multiple industries. As technology continues to advance, these products embody the standards of performance and reliability that consumers expect from modern electronic components.