F 8421 Compact Disc Player Handmodel nr. 85

 

 

• OVERFL -> Overflow -> CD100 = ERROR
• MNR ->Music number -> CD100 = TRACK

• C1 – “uncorrectable: C1 errors”
• UNEC – “Error flag output; when HIGH, indicates that output data is unreliable.
  During active data output (i.e. when CLEC is operating) UNEC applies to each symbol of 8 bits of data output at that time. Before each data – word of two symbols is output, UNEC applies to the whole data word that will follow in five frames time.”

 

Text “Push to Open” missing

Laser is working

 

The first 6 Seconds, Attempt 1. Focus point is not found
After 7 seconds I press “PLAY” and with my finger I push the CD a liitle down , The focus point is found and the CD starts to turn. You see the lens at the very top and can’t go any further…but just find  focus point  and starts spindel motorThen I press “next track” and you see the arm move outwards to the next track..
Then I press “stop” and see the Lens drop considerably,

Video : Focus motor start up

 

 

 

 

 

Tested whether on pin 26 and pin 5 of the SUBCODE MAB8400  “Time” passed by as in CD202 and CD303, unfortunately. So no idea what is on these two data i/o lines, on the scope something does pass by on pin 26, pin 5 is high