JRC JSS-2150 -, Инструкция по эксплуатации

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Maintenance & Inspection
6-20
6.6.2 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 Typical causes
1
Nothing is displayed on the
controller or the data terminal
screen.
 Malfunction in the controller or data terminal cable

Abnormal power supply voltage

Malfunction in the power switch, display circuit or control
circuit
2
TX and ON are displayed but no
voice is transmitted in the TEL
mode.

Malfunction in the handset

Malfunction in the controller cable

Malfunction in the AF signal transmission circuit
3
TX is displayed but ON is not,
and transmission is not possible.

Malfunction in the transmission circuit
4
TX and ON are displayed, and
transmission is not possible.

Malfunction in the handset PTT switch (TEL mode)

Malfunction in the electrical key connection (CW mode)
 Malfunction in the transmission circuit
5 Reception sensitivity is poor.

Antenna damage
 Break or short circuit of antenna cable

Malfunction in the antenna connectors

Malfunction in the receiver circuit
6
Little or no sound from the
speaker, both static and voices.  Malfunction in the speaker

Malfunction in the receiver circuit
7
Radio static (noise) is output
from the speaker, but cannot
receive transmissions from other
stations.

Antenna damage

Break or short circuit of antenna cable
 Malfunction in the antenna connectors

Malfunction in the receiver
The following are not faults.
Symptom Possible Causes Handling
Both Tx & Rx functions are invalid,
and the SIG meter indicates
off-the-scale.
The external BK line is ON.
Stop operating the external
equipment.
The VOL control, the dimmer, and
PWR key on the controller are valid
but functions such as the RF GAIN
control are invalid.
Multiple controllers are connected,
and another controller has access
rights. Press ENT to obtain access
rights, and after that, retry
the operation.
No response from other station via
radiotelephone or DSC call.
No operator in that station, or
unavailable to respond due to other
duties.
Wait and retry later.
When multiple controllers are
connected, access rights cannot be
obtained by pressing ENT on a
monitor controller.
Another controller with higher
priority is in use for communicating
or is performing menu operations. After operations on the other
controller are finished,
obtain access rights.
If the system is left on a screen
other than the status display for a
while, the screen returns to the
status display.
The inactivity timer is activated and
the menu is closed. Set the timer with the 7.3.6
Menu shutdown.
The received distress call log has
been erased without operation.
Automatically deleted the received
distress calls of 48 hours old after
that reception. (IMO A.806(19))
Or the equipment had been turned
off by such as the breaker on the
power supply.
Print and save received
messages if necessary.
When turning on the data terminal,
the start screen is displayed. But
after that, nothing is displayed.
The dimmer level is adjusted to 0
with such as Ctrl+
 operation.
Adjust the dimmer level with
the DIM key on the panel of
the data terminal or Ctrl+

operation.
CHG alarm lamp on Battery
Charger (NBB-724) is turns on. AC power is not supplied to the
NBB-724.
Supply the AC power and
turn on the AC and the DC
breaker on NBB-724.
NKG-900 printer does not print. Printer is the preview state.
Press the Preview button on
the NKG-900.
Note