Kirisun DP770, Service Manual

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DP770 Service Manual
1. General Introduction
1.1. Scope
This manual is used for maintenance and repairing of the DP770 digital handheld radio, and intended to be
used by experienced technicians and trained engineers. Changes may occur with the technology
development. To require latest technology development information, please contact our company or the
local dealer.
Before any repairing, please read this manual carefully.
1.2. Safety Precaution
Electromagnetic Radiation Energy of Radio
Radios will generate and radiate electromagnetic energy, and Kirisun Radios’ electromagnetic radiation
meets the demand of domestic and international standards. To ensure optimum efficiency of the radio and
reduce electromagnetic radiation, when using the radio, it should be perpendicular to the ground. Keep
your mouth 2-5cm away from the microphone.
Electromagnetic Interference
To avoid interference, please turn off the radio in the site which specifically forbids using radio, e.g. hospital,
airport, health center and etc.
Explosive harmful gases
In the place with explosive harmful gases, such as the lower deck of a hull, fuel or chemical storage,
transportation facilities, places that contain chemicals or dust particles or metal powder in the atmosphere,
radio should be shut down.
When getting close to the blast zone and detonator electric, radio should be turn off.
Charging or replacing battery is not allowed in the place with potential explosive gases.
Antenna Damage
Do not use the radio when the antenna is broken, which will cause a mild burn to your skin.
Replacing Spare Parts
Please try not to replace the spare parts which are not contained in the spare part list.
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