Sharp XV-Z200U Service Manual page 29

Lamp does not light up.
Yes
Is the cooling fan rotating?
Yes
Is the color wheel rotating sound
heard?
Yes
Is the lamp discharging sound
heard?
No
Is DC 370V voltage applied across
the ballast power?
Yes
Lamp failure to light up. Go to
"Formatter Unit Troubleshooting".
No
Check the power circuit or the fan
circuit of the main circuit.
Check around IC9401 motor
No
driver IC circuit Q9401, Q9402
and Q9403.
Normal
Replace the color Check the
wheel. formatter PWB.
Yes
Check the socket
No
Is the pin (22) of P1701 "L" level?
No
Check the control line P-SAVE.
Yes
Is the level converted at IC8001,
B5 output, RN4904?
29
Abnormal
No
Replace the lamp.
Yes
Check the power circuit.
No
Check IC8001 and the
peripheral circuit.
XV-Z200U/E, XV-Z201E
DT-300