58
Maintenance
59
Trouble Shooting
+ 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 CTCSS/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. Coonect antenna properly.
(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.
(i) Rotating Dial will not change
memory channel.
(g) PTT key is pressed but transmission
does not occur.
Problem Possible Causes and Potential Solutions
Default Setting after Resetting(UHF)
VFO frequency
Memory channel 0-199
Offset direction
Offset frequency
Channel step
CTCSS encode and decode
CTCSS tone frequency
TH-9000D
445.00MHz
-
-
600KHz
12.5KHz
-
88.5Hz
DCS encode and decode
DCS code
Key-lock setting
TOT
APO
Squelch Level
-
023N
OFF
OFF
OFF
4
-
-
