
DVOR 432
Operation and Maintenance
Fault Location
6-11
Ed. 01.04
6.1.3.10
Fault of the Local Control Panel (LCP) (9)
The LCP is the focal point for communication which interfaces the local PC and the Remote Control to the transmitters and
monitors. The LCP evaluates directly the battery and the mains monitoring. The LCP consists of two boards: LC-CPU, LCI.
Step
Fault
A
B
C
9.1
Live lamp off
LCP board: live lamp on LC-
CPU off. Liquid crystal display
screen is dark. Keys do not
function.
ALARM and NORMAL remain
lit, LCD screen is dark.
StandstillofLCP-processor
or/and possibly no power supĆ
ply.
Reset Processor of LC-CPU
board. ALARM and NORMAL
indicatorslightsimultaneously,
until processor is initializing
and extinguish after that.
Execute lamp test: Press siĆ
multaneously keys XMTR and
MON at front panel. Indicators
must light, the buzzer gives a
short tone. For this test the
processor and software must
run.
Measure at back panel
BP-C the '5VK' voltage
against GND:
If 5VK is
4,9 V change
DCC-3-05.
If 5VK is
4,9 V, check
14-pole flat ribbon cable
fromCSL front (connector
X4) to LCP ( connector
CT5).
If lamp test is not successĆ
ful though the 5VK voltage
is ok, the LCP is faulty. ReĆ
place completely the LCP.
LCI: LCD
screen dark
LCP board: live lamp on
LC-CPU on.
Check ±15 V voltage supply
fromCSL.
If ok, replace LCI board
with LCD display.
If check fauls again, reĆ
place CSL.
9.2
Live lamp on
Transmitter rack, LCP: The
display in MAIN STATUS field
indicates WARNING.
At least one *.sit file is missing
or damaged in the LCP.
The RAM-check states a fault.
Call Menu 'RC Management'
in ADRACS:
⇒
Control,
⇒
File Transfer,
⇒
Show RAM Directory
All files available?
If necessary, restore the
floppy backup of the *.sit
files.
9.3
Live lamp on
Transmitter rack, LC: The LCD
screen shows "Actual InstallaĆ
tion DVOR 432".
"Maintenance Alert Warning"
in the LCD screen is indiĆ
cated. Call Menu "MainteĆ
nance Data" for more informaĆ
tion.
The *.sit files are ok.
e.g. the battery at the LCP is
weak, U
Bat
< 3.2 V .
Backup data. Replace the
Lithiumbattery at the LCP.
9.4
No commuĆ
nication beĆ
tween PC and
LCP.
The LCP is ok. Indications
and controls directly at the
LCP are operating, but operaĆ
tion via PC is not possible.
Interface cable between PC
and LCP is defective or conĆ
tacts are contaminated.
Configuration of PC is not ok:
- Is the correct port used at
the PC?
- Is any other program
running at this port?
- ADRACS is missing or
damaged?
Check cable? Are the origĆ
inal cable used:
Connector 9-pole, 0-MoĆ
demcable?
Check serial interface port
at PC?
Checkprograms.
Re-load ADRACS if necĆ
essary.
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