Manual

4140
SELF TEST
Accessing the Self-Test Routines
• PressandholdtheOKkeywhilepowering
uptheDB2toaccesstheself-test.
• PressUTILITYtoselect“T”.
• PressOKtoenter.
• PressUTILITYtoselecttest-numberand
press OK to start the test.
Test 0 – LED test
Turns all LEDs on.
Test 1 – Analog In/Out Test
Connect a balanced cable between ONE
analog Output and ONE analog Input.
The Input meter for the used Input should show
-12dB.
Thesymbol“+”willindicatethatthetestforthe
currently used input and output combination is
positive.
The symbol “-” will indicate that there is a
problem with the input or the output. In this
case, try the test with the other analog input/
output to narrow down the problem.
Connect the cable to the other output and input
in order to test these.
Test 2 – AES/EBU In/Out Test
ConnectAES/EBUInputandOutputusinga
balanced cable.
TheINPUTmetersshouldshow0dB.The
symbol“+”willindicatethatthetestispositive.
The symbol “-” will indicate that there is a
problem with the input or the output.
Test 3 – S/PDIF In/Out Test
Connect S/PDIF Output and Input using an
RCA cable.
TheInputmeterswillshow0dB.
Thesymbol“+”willindicatethatthetestis
positive.
The symbol “-” will indicate that there is a
problem with the input or the output.
Test 4 – RS232 remote I/O Test
Connect Rx and Tx on the RS-232 connector
(pin no. 2 to pin no. 3).
Thesymbol“+”willindicatethatthetesthas
been completed successfully.
The symbol “-” will indicate that there is a
problem.
Test 5 – GPI Input Test
Connect the tip and sleeve of the GPI Input
jack using a switch.
When the switch is closed (tip is connected
toground)thesymbol“+”shouldbeshown,
otherwise the symbol “-” is shown.
Test 6 – Battery Test
The battery voltage is tested. If it is within limits,
thesymbol“+”isshown,otherwisethesymbol
“-” is shown.
Test 7 – System Test
The ASIC, DSP, DSP RAM and EEPROM are
tested while the digit “7” is flashing.
Thesymbol“+”willindicatethatthetestresults
are positive.
The symbol “-” will indicate that there are
problems.
Test 8 – Ex.RAM Test
The Ex.RAM memory board is tested for one
minute while the digit “8” is flashing.
Thesymbol“+”willindicatethatthetestresults
are positive.
The symbol “-” will indicate that there are
problems.
Service Note
In case of the unlikely event that the unit needs
to be sent in for service, please pack it in the
original box AND an outer box before sending
it.
DB2 PRESETS