Table of Contents
Advertisement
Normal reproduction
Applicable when the E2-PROM value has been confirmed as normal in the test mode
Is initialization done properly for reproduction of a high reflecting disc?
NO
Is the disc turning properly?
YES
Is reading function attempted repeatedly to read the TOC section of
the low reflecting disc?
YES
Check the position of the lead-in switch by selecting the lead-in
switch position measurement mode from the adjustment items for
the high reflecting disc.
Audio reproduction circuit
Applicable when no sound is produced although the play time display counts up properly during reproduction in the normal mode
Is the audio output waveform obtained at No.24 and 26 pins of IC1701?
YES
Is the audio output waveform obtained at No.1 and 7 pins of IC7?
YES
Check the muting section of IC6.
YES
Does the play time display count up properly?
Check IC1201.
NO
Does the lead-in switch turn on with the pickup at the
innermost track in the test mode?
(Is No.6 pin of IC1401 at "L"?)
Check SW1953, soldered points in the mechanical switch
circuit board and around No.1 pin of CNP1901.
NO
A new disc has no recording in the TOC section.
Replace it with a recorded low reflecting disc.
NO
Check No.70 ~ 72, 74 pins of IC1201 and No.12, 16,
17, 19 pins of IC1701.
NO
Check IC7.
MDX-595
NO
NO
22
Advertisement
Table of Contents
