SD-EX100H (serv.man10). Test mode - Sharp Audio Service Manual (repair manual). Page 3

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Purpose:

An operational check and aging test of disc loading mechanism

Functions: Manual control of a loading/mechanism up/down motor

Loading/eject control
Aging test with TOC reading
Aging test w/o TOC reading
Error display due to abnormal aging test results

Operation: By entering operations assigned only to this test mode, each mode processes its operation.

Manual control mode: Manually controls mechanism according to the operation entered.
  Normal and reverse rotations of a loading motor
  Normal and reverse rotations of a mechanism up/down motor
  Loading/eject control
Aging mode with TOC reading: Repeatedly performs loading/TOC reading/ejection.
  Displays number of times. Maximum test counts are 100,000.
Aging mode w/o TOC reading: Performs loading/ejection only to test mechanism aging.
   Displays number of times. Maximum test counts are 100,000.
Errors should be handled according to normal procedures.

Mode diagram:
By pressing the specified buttons, the unit enters the manual control mode and then the mechanism test mode.

Test mode initial display
"IX***V****"

Mode select display
"MECHA        "

Mechanism test manual 
control mode
"MECHA     :         "

Aging mode w/o TOC 
reading
"L/E  N000000"

Testing mechanism 
aging w/o TOC reading
"L/E  N                      "

Currently in the mechanism 
aging mode w/o TOC reading
"L/E  N                      "

Aging mode with TOC reading
"LIE  N000000"

[CD STOP/EJECT]

[ERASE/BAND] ([BAND])

[Mode]

[Mode]

[Mode]

[CD PLAY]

[CD PLAY]

[CD STOP/EJECT]

[CD STOP/EJECT]