Sharp XG-PH50X Serviceanleitung Seite 40

XG-PH50X
XG-PH50X-NL
Failure mode when the lamp does not light up even when powered on
1. Status of LED
• POWER does not light up.
The sub CPU (IC3603) does not start. Check the peripheral circuits.
• POWER blinks in red.
0.5-second interval:Fan error detection.
(This unit detects the number of fan revolutions. When the fan is running more slowly than
the preset lower speed limit, the power is shut down by the protection function even if the fan
does not stop completely.)
1-second interval: Bottom air filter cover (RCS) detection.
2-second interval: Communication error between sub CPU (IC3603) and main CPU (IC8003).
• LAMP LED blinks in red.
1-second interval: Lamp leaf switch detection.
(The power is not turned on if the lamp cartridge is removed from the unit.)
2. Checking the status via RS232C serial communication
Send"TFCK△△△1"+ENTER,"TABN△△△1" via 232C communication to check the status of the projector.
Return value example of the normal unit
TFCK 1
[ RCS ] Close
[ Lamp1 Leaf ] Close
[ Lamp2 Leaf ] Close
[ Main-Sub ] Communication OK.
[ Fan ] Normal
[ pwm Fan1] No error
[ pwm Fan2] No error
[ pwm Fan3] No error
[ pwm Fan4] No error
[ pwm Fan5] No error
[ pwm Fan6] No error
[ dac Fan0] No error
[ dac Fan1] No error
[ Temperature ] Normal
[ Lamp1 Non Light ] Normal
[ Lamp2 Non Light ] Normal
[ Lamp Life1 ] Normal
[ Lamp Life2 ] Normal
OK
3. Others
• The lamp does not light up if the color wheel motor does not run.
• The lamp does not light up if the thermistor sensor is not connected (e.g. breaking of wire).
• The lamp does not light up when if a communication error occurs between IC3 and IC25 on the PC board.
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