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CP-X325W
Lamp does not light
What is the state of
LAMP indicator
during operation?
Power unit (ballast)
Lamp
PWB ass’y Main
PWB ass’y Main
PWB ass’y Main
Power unit (ballast)
Light
Not light
NO
YES
YES
NO
"L" = 0V
"L" = 0V
Change the lamp.
Does lamp light?
Power unit (circuit)
Not Light
What is the state of
TEMP indicator?
Not light
Blinks
DC FAN
(INTAKE A/B)
H (3.3V)
L (0V)
Measure sure
voltage at the of I303
on the PWB ass’y
Main.
7
PWB ass’y
SENSOR
Infinity
Measure
the resistancne of
TH950 on the PWB ass’y
SENSOR at
disconnecting
E302.
Connect
E302 (for PWB
ass’y SENSOR)
Light
Is the
voltage at L817
on the PWB ass’y Main
fixed to "L" during
warming-up?
Is the
voltage at L818
on the PWB ass’y Main
set to "L" during
warming-up?
NO
YES
Is
PWB ass’y
SENSOR surely
connected with PWB
ass’y Main by the
cable?
about 10k
