Mitsubishi Electric SD420U Service Manual page 11

Preferen
LED Indication
-tial
POWER STATUS
order
8 Red Red
Orange
9 Red
flash5
Green
flash
10
Red
Green
flash2
Green
Red/Green
11
flash3
alternately
Red
Red
flash
12
Red/Green
Green
alternately
Green
13 Green flash
(cycle : 1s)
Green
14 Red flash
(cycle : 1s)
Green
15 Red flash
(cycle : 2s)
Symptom
Power-on is prohibited because of
No power-on
the end of the lamp life.
High temperature of the intake air
No power-on
(outside air)
No power-on
High temperature of the intake air
after power-
off during
(outside air)
power-on
No power-on
Lamp fails to illuminate.
for one minute
Lamp goes out.
No power-on
for one minute
Damaged lamp
Input signal is
IIC bus failure of A/D, DECODER
not
displayed.
Warning
The end of the lamp life is near.
indicated by the
(More than 75% of the lamp lifetime
LED during
has been consumed.)
stby.
Warning
The end of the lamp life is near.
indicated by the
(More than 75% of the lamp lifetime
LED during
has been consumed.)
power-on.
No power-off
No power-off for one minute after
for one
minute after
power-on
power-on
Power-on is prohibited during the
No power-on
for one minute
lamp cooling time after power-off.
LED indication
continues for Power-on is allowed during the lamp
60-80 seconds
cooling time after power-off, but the
after power-off.
Power-on is fans continue to operate.
allowed.
Failure
Replace the lamp and reset the lamp operating
time. (Press and hold the Power,
buttons on the projector together for 3 seconds.)
Temperature around the air inlet (on the
back)
Temperature around the air inlet (on the
back)
Damaged lamp
MAIN
- 2 -
Check Point
PCB Reference
, and
U10, U46
Reset
Manual
Auto
Auto
Auto
Auto
Manual
Unplug and
plug the
power cord.
Manual
Manual
Auto
Auto
Auto