104
d) After connecting the high-frequency wattmeter between this equipment and ATU,
measure the progress wave and the reflected wave. If the VSWR(Voltage Standing
Wave Ratio) is less than 2:1, the connection of the antenna, connectors and coaxial
cable is stable and the parts have no defect. If the VSWR is more than 2:1, the
connection of the antenna, connectors and coaxial cable is bad or the parts have
defect.
2. Power Supply
Check power supply circuit even though volume & squelch control, not appear any sound
and display at the front panel after connect power transmitter - receiver.
a) Check is cut the fuse after open fuse holder at the rear of transmitter receiver. (Fuse:
30A)
b) Is it correct connects condition power connecting at rear of the transmitter receiver.
(Fuse be cut in case of power polarity supply opposite)
c) Check power supply voltage at the power supply connector.
If 24V
±
10% is (21.6
～
26.4V), it's correct. Have to maintenance if over or less, the
badness of power supply equipment (POWER SUPPLY or BATTERY)
d) Change same goods if check power circuit P1003300 PCB (SRG-3150DN) is defective
3. Transmitter
Check follow as when hand set is correct. When transmitter switch hand set can't receiver
at the operating, check the connecting condition.
a) Check antenna & power. Can't receiver when channel selecting is incorrect or
selected ban channel.
b) Check P10-3300 PCB and P10-3380 PCB, if they are faulty, they should be replaced.
c) Not able to receive from unmatched channel and error sign is displayed
4. Receiver
Check if each switch selecting is correct for firstly and check as follow
a) Check connects of speaker after check air antenna or power.
b) Check P103300 PCB first and if it is defective, replace it.
c) Check if speaker is on
“
OFF MODE
”
and if selecting the external speaker is correctly
conducted.
5. Switch and Display
First check if there is wrong usage or setting value. If everything is ok, do the follows.
a) Check P10-3340 PCB and if it is defective, it should be placed.
