TROUBLESHOOTING 10

PROBLEM

POSSIBLE CAUSE

SOLUTION

REF.

The transceiver does

• Bad connection to the power supply.

• Check the connection to the transceiver.

p. 34

not turn ON.

 

 

 

 

 

 

 

No sound from speaker.

• Squelch level is too high.

• Set squelch to the threshold point.

p. 8

 

• Volume level is too low.

• Set [VOL] to a suitable level.

p. 8

 

• Speaker has been exposed to water.

• Drain water from the speaker.

 

 

 

 

Transmitting is impossi-

• Some channels are for low power or re-

• Change channels.

pgs. 6,

ble, or high power can

ceive only.

 

7, 52

not be selected.

• The output power is set to low.

• Push [HI/LO] on the microphone to select

p. 8

 

 

high power.

 

 

 

 

 

Scan does not start.

• “TAG” channel is not programmed.

• Set the desired channels as “TAG” channels.

p. 13

 

 

 

 

No beeps.

• Beep tones are turned OFF.

• Turn the beep tone ON in Set mode.

p. 32

 

• The squelch is open.

• Set squelch to the threshold point.

p. 8

 

 

 

 

Distress call cannot be

• MMSI (DSC self ID) code is not pro-

• Program the MMSI (DSC self ID) code.

p. 14

transmitted.

grammed.

 

 

 

 

 

 

9

10

37

Page 43
Image 43
Icom IM402SA, IM402A instruction manual Troubleshooting, Problem Possible Cause Solution

IM402A, IM402SA specifications

The Icom IM402SA and IM402A are robust mobile transceivers designed for various communication needs, particularly in the marine and recreational sectors. These models are known for their reliability, durability, and advanced features that cater to both casual users and professionals.

One of the standout characteristics of the IM402SA and IM402A is their compact design, making them suitable for a range of vehicles, from boats to vehicles employed in rugged environments. Their sturdy build ensures they can withstand harsh conditions, which is critical for marine use where humidity and saline air can affect equipment longevity.

In terms of features, both models are equipped with a high-performance receiver that offers exceptional clarity and range, ensuring that communication remains clear over long distances. The IM402 series supports multiple frequency bands, enabling users to communicate effectively across various channels. This versatility is crucial in dynamic environments where multiple communication methods may be needed.

Another significant aspect of the Icom IM402SA and IM402A is their advanced digital signal processing (DSP) technology. This feature enhances audio quality by reducing background noise and improving overall clarity, facilitating better communication in noisy environments, such as when on the water or in busy industry settings. The built-in noise-cancellation technology ensures that conversations remain intelligible even when external noises are present.

User-friendly interfaces are a hallmark of Icom products, and the IM402 series is no exception. The intuitive keypad layout and illuminated display make it easy to navigate through settings and channels, even in low-light conditions. Furthermore, programmable function keys allow users to customize their experience, providing quick access to frequently used features.

The transceivers also come with emergency functions, including distress calling capabilities that comply with maritime regulations. This feature is vital for safety, especially for those venturing into remote or potentially hazardous areas. Additional safety features can include weather alerts and access to emergency channels.

In summary, the Icom IM402SA and IM402A mobile transceivers are designed to deliver high-quality, reliable communication with a host of advanced features. Their robust design, superior audio clarity, and user-friendly interfaces make them a practical choice for anyone needing dependable communication in challenging environments. Whether on the water or in the field, the IM402 series stands out as a reliable tool for effective communication.