BK Radio KNG Series, Руководство по обслуживанию

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BK Radio Page 4-1
maintenance
seCtion iV
maintenanCe
* * * * * * * * notiCe * * * * * * * *
KNG Portable radios are manufactured to meet IP67 specifications for dust and
water protection. Disassembly of the radio may compromise the integrity of this
protection. the KnG’s iP67 rating cannot be guaranteed on radios serviced by
non-factory personnel.
* * * * * * * * * * * * * * * * * * * * * * * * *
4.1 introDUCtion
This maintenance section contains troubleshooting and assembly/disassembly procedures. An
understanding of the theory of operation is recommended before maintenance is attempted.
4.2 oVerHaUl
VisUal insPeCtion
Physical defects resulting from wear, physical damage, deterioration, or other causes can cause a
decrease in radio performance.
Prior to disassembling the radio, check the external connections for signs of damage or improper 1.
installation.
When inspecting inside the radio check for loose, improperly soldered, broken or corroded terminal
2.
connections. Inspect the flex-connections for damage and proper connection. Check other
components for cracks, chips, bad solder connections or other damage.
DisassemBlY
BatterY remoVal
1. Slide the release tab on the battery toward the bottom of the radio.
2. Pull the top of the battery out. (Approximately 30
o
)
3. Pull up to remove the battery pack.
antenna remoVal
1. Holding the base of the antenna turn counter clockwise to remove.
rX/tX BoarD assemBlY
1. Remove the gasket from around the assembly.
2. Remove the slot nuts from the channel and volume switches.
3. Remove the seven screws holding the heatsink to the Rx/Tx Board.
sYstems BoarD assemBlY
1. Disconnect the flex circuits connecting the Systems Board to the side connector and display
assembly.
2. Disconnect the speaker.
3. Remove the two screws holding the Systems board to the housing.
4. Lift the board from the top to remove.