Trouble Shooting - Alinco DR-135T MkII Instruction Manual

10. Maintenance / Reference

Trouble Shooting

Please check the list below before concluding that the transceiver is faulty.
If a problem persists, reset the transceiver. This can sometimes correct erroneous operation.
Problem
(a) Power is on nothing
appears on Display.
(b) Fuse is blown.
(c) Display is too dim.
(d) No sound comes from
speaker.
(e) Key and Dial do not
function.
(f) Rotating Dial will not
change memory channel.
(g) PTT key is pressed but
transmission does not occur.
(h) The unit does not transmit
and cannot be reset.
(i) The unit does not work in
the packet mode.
(j) The unit does not work in
the APRS mode.
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Possible Causes and Potential Solutions
+ and - polarities of power connection are reversed. Connect red lead to plus
terminal and black lead to minus terminal of DC power supply.
Check and solve problem resulting in blown fuse and replace fuse with new fuse.
Dimmer setting is "LAMP-L". Please make the dimmer setting "LAMP-H".
• Squelch is muted. Decrease squelch level.
• Tone or DCS squelch is active. Turn CTCSS or DCS squelch off.
Key-lock function is activated. Cancel Key-lock function.
Transceiver is in CALL mode. Press the VFO or memory mode.
• Microphone connection is poor. Connect microphone properly.
• Antenna connection is poor. Connect antenna properly.
The DSUB-9 port has been connected to a PC without installing the EJ-41U.
Disconnect the cable and install EJ-41U properly.
• EJ-41U/TNC is not set properly. Make sure the connections and
configurations are properly set.
• The unit is not in the data mode. Follow the instruction, configure and retry.
• The squelch is open. Adjust squelch level properly.
• The data transmission speed is not configured. Use command to configure the
speed.
• The cable is not straight type. Use straight RS-232C cable.
• The unit is not in the data mode. Make sure the connections and parameters
are configured properly.
• The unit is not configured for automatic transmission. Use PC to configure
the TNC.
• The squelch is open. Adjust squelch level properly.
• GPS receiver is not receiving the data from the satellites. Wait until GPS
receiver receives data from satellites.