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XR-1X
Check when the lamp turns
off soon after turning on
Have connectors P1702,
P1711, P1712, and P1713
come off or are they
loose?
NO
Is each cooling fan
rotating?
YES
Is approx. 3 V applied to
TL1723?
YES
Is 12 V applied to TL1771?
YES
Is 2.5 V applied to
TL1733?
YES
Is 5 V applied to TL1772?
YES
Is 3.3 V applied to
TL1721?
YES
Is the signal of 120 Hz
sent to TL1722?
YES
Is the signal of 120 Hz
sent to TL1706?
YES
Check the power supply
(ballast) unit.
YES
Securely insert the
connectors.
NO
Check the cooling fan.
NO
Check peripheral circuits of
Q1711.
NO
Check IC1771, IC3502 and
peripheral circuits.
NO
Is 3.3 V applied to TL1734?
NO
Check IC1734 and
peripheral circuits.
NO
Check IC1772 and
peripheral circuits.
NO
Is 3.3 V applied to TL1721
with P1702 removed?
YES
NO
Check PHOTO SENSOR
PWB.
NO
Check IC1701 and
peripheral circuits.
42
Go to "DMD system check".
YES
Check IC1733 and
peripheral circuits.
NO
Check connection of
FB1710.
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