82
Issue 21
TX500 series technical manual
5.3.1
Diagnostic LEDs
NO INPUT
NON SYNC
IN RANGE
NO INPUT
NON SYNC
IN RANGE
NO INPUT
NON SYNC
IN RANGE
NO INPUT
525
UP OK
REM
F
G
N
D
1
F
G
N
D
2
B
K
G
N
D
POWER
LED
COLOUR
FUNCTION WHEN LIT
NO INPUT
RED
No input
NON SYNC
RED
Not synchronised with ref
FGND1
IN RANGE
GREEN
Within timing range of ref
NO INPUT
RED
No input
NON SYNC
RED
Not synchronised with ref
FGND2
IN RANGE
GREEN
Within timing range of ref
NO INPUT
RED
No input
NON SYNC
RED
Not synchronised with ref
BKGND
IN RANGE
GREEN
Within timing range of ref
NOT
LOCKED
RED
PLL cannot lock to
analogue reference
AV REF
NO INPUT
RED
No input
525
YELLOW
Reference is 525 (off =
625)
UP OK
YELLOW
Processor heartbeat
(flashes)
REM
GREEN
In remote configuration
mode.
Not supported
AUTOTIMED
TRI-
COLOUR
Not supported
POWER
GREEN
+5V and +12V rails OK