Epson EMP-7300, Руководство по обслуживанию

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2-28
REV.A
counted the total running hours and has written the running data in IC 413. The
lamp will run only 100 hours after the orange and the red lamp indicators start to
blink alternately, so you should replace the lamp as soon as possible. (If the lamp
indicators blink alternately from beginning, the lamp life is no more than 100 hours.
Therefore the lamp life may be suddenly terminated.)
2.When the total running hour exceeds 2000 hours (the lamp is used),the lamp will not
run before you replace it with a new lamp inner housing.(You can’t replace with
used lamp inner housing ) Once you start up with a new lamp inner housing, the
fuse on the FU board is blown, so it doesn’t recognize as a new one.
The figure 2-33 shows the control circuit.
Figure2- 41 Lamp inner housing control
CD10FC Board
Signal meaning
LTPCL: Light power supply control signal
LPFAL: Light power supply failure
LLIFE: Lamp life
LFUSE: FU board fuse is blown
EEPROM
(IC413)
Main CPU
(IC415)
Generator
(X400)
IC600
CN500
CN103
AC power
CD10MA Board
Lamp indicator
CN600
Power Supply Unit
Lamp inner
housing
CD10DR Board
LPCTL
LPFAL
LLIFE
LFUSE
+5V
CN100
1 2
LSTAT
BACTA
LPSTC
Lamp
+5VD
1K
7.5
CD10FU board