Filter
Top Products
88
Service Manual
Third edition, June 1997
9 Fault Finding on the Saab TankRadar System
Whenever there are symptoms in the system that may indi-
cate that there is some failure, please start the fault finding
by looking at the following pages. Look for a similar symp-
tom as the one your TankRadar system is having, and then
look for the cause and the action to take in order to fix the
failure.
The symptoms are printed to the far left in bold text. On the
line below is one or more descriptions of what is possibly
causing the symptoms. Below each cause there are a number
of suggested actions preceded by bullets (•). Both causes and
actions are listed so that the ones that are most likely to
happen or easiest to fix are placed first.
Abbreviations used in the fault finding chart:
LCB - Backup Display in Level Unit.
LCI - Interface Board in Level Unit.
LCM - Processor Memory Board in Level Unit.
LCS - Signal Board in Level Unit.
LED - Light Emitting Diode.
LI - Transmitter Interface in Level Unit.
LP - Power Block in Level Unit.
LU - Level Unit.
WS - Work Station.
9.1 SysFail and Warning Messages Shown on the Work Station
9.1.1 SysFail message: Level Unit SysFail.
Level Unit may not be switched on.
• Press power switch in Level Unit to setting “1”, see chapter 5.3.
Mains power supply to Level Unit may be failing.
• Check power supply, cable and fuses. See chapter 5.11.
Fuses in Power Block of Level Unit might be blown.
• Check cause of blown fuse. Replace burnt fuses, see spare parts list in
chapter 10.
• If system is new, check setting of voltage in Power Block in the Level
Unit. Voltage setting is marked on the Power Block. See chapter 5.11.
LCM Board faulty.
• See chapter 5.6.
Communication to one or more LIs within the Level Unit has failed.
• See chapter 9.1.3 and 9.1.4 below.
9.1.2 SysFail message: Level Unit Communication Failed.
I/O Box may not be functioning.
• Check mains power supply and power cable to I/O Box. Check
setting of voltage in I/O Box. See chapter 4.