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Lamp does not light
What is the
state of LAMP
indicator D303 during
operation?
H (3.3V)
DC FAN
(Lamp)
NO
(Fan lock)
DC FAN
(Panel)
Infinity
Thermistor A
(#6430)
CP-S235 (C10SM2)
Light
No light
Blinks
Measure
sure voltage at the
cathode pin
of D841 on
C
the MAIN board.
L (OV)
Does the
signal at the pin
1
of E801 have a amplitude
of 3.3V and a frequency
of 40Hz or
more?
YES
(Normal)
Measure
the resistance of
external air sensor
between
1
and
2
of #6430.
(at disconnecting
from E302)
about 10k
MAIN board
Is the LAMP
installation correct?
YES
Change the lamp.
Does lamp light?
Not light
Is the
voltage at the
of E804 on the
1
MAIN board fixed to "L"
during warming-up?
"L" = 0V
NO
Power unit (ballast)
*
What is the
state of TEMP indicator
D302?
No light
Is the voltage
at the
3
of E804 on
the MAIN board
set to "L" during
"L" = 0V
warming-up?
YES
Power unit (ballast)
13
NG
Install the Lamp
Light
Lamp
YES
MAIN board
Power unit (circuit)
NO
MAIN board
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