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DX 929
CHAPTER 5
MAINTENANCE
5.0 PRECAUTIONS
The inherent quality of the solid-state components used in this transceiver will provide many years of
continuous use. Taking the following precautions will prevent damage to the transceiver.
(i) Never key the transmitter unless an antenna or suitable dummy load is connected to the antenna
receptacle.
(ii) Ensure that the input voltage does not exceed 16 VDC or fall below 11.
(iii) Transmitting over long periods can cause heat built-up and cause transmitter damage.
5.1 PERIODIC INSPECTION
This unit is aligned at the factory to deliver maximum performance. However, continued performance
cannot be expected without periodic inspection and maintenance. Important points to be checked
regularly are as follows;
Check Item
Action
Whip antenna
(option)
If cracked or broken, replace it.
Coaxial cable
If sheath is cracked or immersed
in water, install new coaxial
cable.
Coaxial & power
plug connections
If loosened, reconnect. If
corroded, clean contacts.
Battery connection
If corroded, clean power
terminals.
Ground terminal
If corroded, clean terminal.
5.2 FUSE REPLACEMENT
To protect the equipment from serious damage, a fuse is provided on the power supply lines. The fuse
protects against over voltage / reverse polarity or internal fault of the equipment. If the fuse has blown,
first find out the cause of the trouble before replacing it. A fuse rated for more than the transceiver
requirement should not be used, since it may permanently damage the equipment. Damage due to over
fusing is not covered by the warranty.
Summary of Contents for DX 929
Page 1: ...CB Radio Model DX 929 Service Manual Copyright Reserved...
Page 11: ...10...
Page 14: ...13 Figure 4 1 Transmitter test setup Figure 4 2 Receiver test setup...
Page 18: ...17 DX 929 ROTARY SWITCH PCB EPT092920Z SMD COPPER SIDE COMPONENT SIDE...
Page 20: ...19 DX 929 DISPLAY PCB EPT092930Z COMPONENT SIDE COMPONENT SIDE COPPER SIDE...
Page 22: ...21 DX 929 POWER MIC GAIN VOL SQ CONTROL VR PCB EPT092940Z COMPONENT SIDE COPPER SIDE...
Page 25: ...24 DX929 METER PCB EPT092961Z COMPONENT SIDE COPPER SIDE COPPER SIDE SMD...
Page 28: ...27 DX 929 MAIN PCB EPT092913Z COMPONENTS SIDE...
Page 29: ...28 DX 929 MAIN PCB EPT092913Z COPPER SIDE...
Page 32: ...DX 929 SCHEMATIC DIAGRAM CONTROL PCB...
Page 33: ...DX 929 SCHEMATIC DIAGRAM MAIN PCB...
Page 34: ...DX 929 MECHANICAL PART DX 929 EXPLODE DRAWING...
Page 37: ...ATS929010A July 2003...
