Troubleshooting; Operation Checks - Furuno DS-50 Operator's Manual

Troubleshooting

Below are simple troubleshooting procedures the operator can follow to restore normal opera-
tion.
Power cannot be turned on.
• Try adjusting brilliance (power may be on but brilliance is too low).
• Check the power cable for damage.
• Check that the power connector is firmly fastened.
• Check if fuse(s) on the processor unit have blown. If a fuse has blown, find out the cause
before replacing it. Be sure to use proper fuse. Fuse rating appears below fuse holder.
Poor accuracy.
• Check if ground has corroded or ground connection has loosened.
• Check if cables of other equipment are near the transducer cable.

Operation Checks

Main display unit
1. Turn on the power while pressing and holding down the [MODE] selector. The following
appears when the equipment is normal:
Port/starboard speed: 0.5 kt \
Fore/aft speed:
Distance run:
Depth:
2. Operate the [MODE], [Distance/Keel Clearance] and [Kt / m/s] controls one by one. Con-
firm that mode or indications changes with each pressing.
3. Confirm that distance run setting can be changed.
Interconnection between main display unit and remote indicators
1. Turn on the power while pressing and holding down the [SET] key. 10.0 kt for fore/aft speed
appears. "T" appears to denote the test mode.
2. Confirm that the remote indicators display 10.0 kt. If not, there may be some problem be-
tween the processor unit and remote indicators.
c 18.9 kt
12345.67
12.3 (unit according to system settings)
15