Guide To Locating Faults - JRC JSS-2150 Instruction Manual

6.5.2

Guide to locating faults

Use the following table as a guide to locating the causes of malfunctions in the equipment. Also,
when contacting JRC or our agency, please notify us of the malfunction conditions.
No. Symptom
Nothing is
1 controller or the data terminal
screen.
TX and TXON
2 but no voice is transmitted in the
TEL mode.
TX is displayed but
3 is not, and transmission is not
possible.
TX and TXON
4
and transmission is not possible.
5 Reception sensitivity is poor.
Little or no
6
speaker, both static and voices.
Radio static
from the speaker,
7
receive transmissions from other
stations.
Note
The following are not faults.
Symptom
The VOL control, the dimmer, and
PWR key on the controller can be
operated, but the radiotelephone
functions such as the RG GAIN
control cannot be operated.
No response from other station via
radiotelephone or DSC call.
When multiple controllers
connected, access rights cannot be
obtained by pressing ENT on a
monitor controller.
If the system is left on a screen
other than the status display for a
while, the screen returns to the
status display.
The received distress call log has
been erased without operation.
When turning on the data terminal,
the start screen is displayed. But
after that, nothing is displayed.
displayed on the
is displayed
TXON
are displayed,
sound from the
(noise) is output
but cannot
Multiple controllers are connected,
and another controller has access
rights.
No operator
unavailable to respond due to other
duties.
are
Another
priority is in use for communicating
or is performing menu operations.
After 10
system
inactivity timer is activated and the
screen returns to the status display.
(By ITU-R M.493-11 recommendation)
Automatically deleted the received
distress calls which are 48 hours old
after that reception.
(Regulated by IMO A.806(19))
Or the equipment had been turned
off by such as the breaker on the
transceiver.
The dimmer level is adjusted to 0
with such as Ctrl+
Typical causes
Malfunction in the controller or data terminal cable
Abnormal power supply voltage
Malfunction in the power switch, display circuit or control
circuit
Malfunction in the handset
Malfunction in the controller cable
Malfunction in the AF signal transmission circuit
Malfunction in the transmission circuit
Malfunction in the handset PTT switch (TEL mode)
Malfunction in the electrical key connection (CW mode)
Malfunction in the transmission circuit
Antenna damage
Break or short circuit of antenna cable
Malfunction in the antenna connectors
Malfunction in the receiver circuit
Malfunction in the speaker
Malfunction in the receiver circuit
Antenna damage
Break or short circuit of antenna cable
Malfunction in the antenna connectors
Malfunction in the receiver
Possible Causes
in that station,
controller with higher
minutes of leaving
on a menu screen,
operation.
Maintenance & Inspection
Handling
Press ENT to obtain access
rights, and after that, retry
the operation.
or
Wait and retry later.
After operations on the other
controller are
obtain access rights.
the
the
Do not leave the equipment
during menu operation.
Print and save
messages if necessary.
Adjust the dimmer level with
the DIM key on the panel of
the data terminal or
operation.
finished,
received
Ctrl+
6-11