XL-DV50 (serv.man2) - Sharp Audio Service Manual (repair manual). Page 10

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XL-DV50H
2 – 4
7. DVD MECHANISM Aging Test Mode (TEST 8)
OPEN/CLOSE & 3 DISC CHANGER aging test.
DISPLAY:
FUNCTION:
Enter the TEST MODE 8, MCU control the 3 DISC CHANGER OPEN/
CLOSE. After open finished, tray rotate 1 circle (360 degree). Then
close, After close finished, tray rotate 1 circle (360 degree) again.
Request:
Every period include 4 operation. Below is TIMING:
Enter test mode
CHANGER
Find the disc 1 position
open
delay 3S after open finish
rotate 1 circle
close
delay 3S after close finish
rotate 1 circle
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