Japan Radio Co. JLR-7900, Instruction Manual

Page: 127 / 184

5-3
5.3 Troubleshooting
5.3.1 Troubleshooting
The following is reference information concerning identification of problems.
Symptom Possible Causes Troubleshooting Measures
The power does not turn on
when the power switch is
pressed. Power is not being supplied by
the ship junction box. Check whether the cabling from the
junction box is normal.
Power is not being supplied by
the power supply equipment
(option). Check whether the power supply unit
cabling is normal.
The fuse connected to the
power cable has blown. If there are no problems in the cabling,
replace the fuse.
The power supply equipment
(option) fuse has blown. If there are no problems in the cabling,
replace the fuse.
The display unit switch is
broken. Consult with JRC or our agents.
The LCD display does not
display anything. The LCD display is broken.
Consult with JRC or our agents.
The display does not light up.
The alert sound is not
generated.
The buzzer is broken. Consult with JRC or our agents.
The alert sound is turned off. Refer to 4.12.8
The click does not sound.
The key press sound is turned
off. Refer to 4.9.3
There is no reception
(from sensor).
The sensor connection cable
is disconnected. Check the connection cable.
The sensor is broken. Consult with JRC or our agents.
There is no transmission
(to external devices).
Output settings have not been
configured. Refer to 4.15.5.1
The configured channel is
incorrect. Refer to 6.3.1
The DISP-DPU or POWER
SUPPLY UNIT is broken. Consult with JRC or our agents.
The Dimmer are not
interlocked.
The baud rate is different. Refer to 4.15.4.4
The dimmer group is different. Refer to 4.15.4.3
The dimmer is different.
Refer to 4.15.3
The cable is disconnected. Check the connection.
Data is not shared.
The baud rate is different. Refer to 4.15.4.4
Output sentence is not
selected. Refer to 4.15.4.4
The cable is disconnected. Check the connection.
Do not perform internal inspections or modifications of the equipment. Inspection
or modification by unauthorized personnel may result in fire, electric shock, or
equipment failure. Please consult with JRC or an affiliate to perform internal
inspections or repair.
WARNING