Read Sharp XV-Z2000E (serv.man12) Service Manual online
38
XV-Z2000
DT-400
DT-400
Checking the lamp light-up
Does each cooling fan
function?
function?
Check the power supply circuit
or fan circuit on the main circuit.
or fan circuit on the main circuit.
Is the rotating sound of the
color wheel heard?
color wheel heard?
Check Q9401 to Q9403,
IC9401(motor driver IC)
and their peripheral ciruits.
IC9401(motor driver IC)
and their peripheral ciruits.
Go to "Checking the
peripheral circuits of
the formatter".
peripheral circuits of
the formatter".
Replace the color wheel.
Is the discharging sound
heard?
heard?
Is the lamp tight in the
socket?
socket?
Replace the lamp.
Securely insert the
connectors.
connectors.
Is DC voltage of approx.
370V applied to both ends
of the ballast power supply?
370V applied to both ends
of the ballast power supply?
Is pin (2) of P1707 at the
"H" level?
"H" level?
Go to "Checking the
power unit".
power unit".
Go to "Checking the
peripheral circuits of the
formatter".
peripheral circuits of the
formatter".
Check Q8002, Q8006 and
their peripheral circuits.
their peripheral circuits.
NO
YES
NO
ABNORMAL
YES
NORMAL
YES
NO
YES
NO
NO
YES
YES
NO
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