18. Lamp power supply (single module)
18.1 LPS module diagnostic LED’s
Status LED’s on the LPS module
There are 8 diagnostic LED ’s per LPS module. Four orange, three green and one red LED.
The orange LED “LVPS OK” lights up immediately after the projector is switched on. At the s ame time, the heartbeat LED starts
blinking. All other status LEDs o f the LPS unit remain off. T his is the standby status of the LPS unit. Once the command is sent
to the LPS units to start up the projection lamp , the green LEDs are lighting up one after the other. Firs t the green LED “PFC OK”,
then the g reen LED “LP S O K” and finally, when the lamp is ignited, the g reen LED “LA MP ON”. The right or ange of the upper row
blinks. This is the heartbeat signal
The red LED “ERR” r emains off unless an error is detected inside the LPS unit or when bo th LPS units are ordered to shutdown due
to a malfunction somewhere else inside the projector.
- LAMP OUTPUT +
ERR
N
STATUS CTLB OUT
ADDRESS CTRL IN
LAMP ON / LVPS OK
CTRL OUT
CTLB IN
PFC
OK
LPS
OK
MAINS
INPUT
3
2
1
4 5 6
7 8
Image 18-1
1 Diagnostic LED “LPS HEARTBEAT” (orange).
2 (internal use only).
3 Diagnostic LED “LPS TRANS” (orange).
4 Diagnostic LED “ERROR” (red).
5 Diagnostic LED “PFC OK” (green).
6 Diagnostic LED “LPS OK” (green).
7 Diagnostic LED “LAMP ON” (green).
8 Diagnostic LED “LVPS OK” (yellow).
Diagnostic
About the orange LEDs next to the CT RL connectors:
LED 2 is only for internal use. LED 1 is the heartbeat LED.
LPS
HEARTBEAT
(Orange LED 1)
Diagnostics Action
Blinking Normal operation
-
OFF 12 V from backplane via C TR L IN not available on LPS
unit
Check 12V out on backplane.
ON 12 V from backplane available. Replace the LPS module.
LPS TRANS
(Orange LED 3)
Diagnostics Action
Blinking Normal operation, blinks each time a valid transmission
has b een received
-
Communication fault (no reception of va lid c omm ands
from primary side)
Replace LPS unit
Fault on primary side of LPS (E.g. fuse blown and no
mains voltage available inside LPS )
Replace fuse.
If the problem is not s olved, replace LPS
OFF or ON
No mains voltage present at input of LPS mains
terminals
Check m ain voltage.
About the diagnostic LEDs, ERR, PFC, LPS, Lam p ON and LVPS.
292
R5905043 DP2K-12C/11CX 19/02/2018
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