Rev. 01
Company Confidential Optoma_______________________ Delta____________
16
2007/06/13
3. TROUBLE SHOOTING
J4P serial
By checking operations during normal usage time, it is possible to carry out judgments on malfunction to a certain
1. Check cable of Power Supply Unit and thermostat Ass’y.
2. Check the connection of Power Supply (
CON201
of Power board
to
CN900
of Main board).
3. Check Power Supply Unit malfunction.
4. Check keypad connection.
YES
NO
NO
Connect the power cord
POWER
: Light
1.Check Thermal sensor1 Transistor (
Q702
) malfunction.
2.Check Thermal sensor IC (
U709
) malfunction.
POWER
、
READY
:ON
POWER:
4
Blinks
READY
: 1 Blink
Waiting Power On
YES
NO
YES
POWER:
7
Blinks
NO
1. Check Lamp Cover Switch is not attached.
2.
Check Lamp Cover connector (
CN12
) is open.
YES
Содержание EP774
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