START-UP PROCEDURE
PLAY
pressed ?
µ
P switches
DC/DC converter on
(POWER=L)
µ
P resets CD7&NPC
PORES=L
NPC_RES=L
µ
P initializes CD7
with default
parameter/settings
µ
P sends
command to CD7:
“move slide inside”
inner switch
closed within
6sec ?
µ
P sends
command to CD7:
“move slide outside”
µ
P accelerates
disc motor for
200msec
µ
P sends
commands to CD7:
“slide servo off”
“focus servo on”
inner switch
open within
0.3sec ?
Start-up procedure for ext.DC supply,
no accu inserted, hold-switch in off pos.,
ESA/ESP off, resume-mode off, CD-door closed.
N
N
N
Y
Y
Y
POWER OFF
(stand-by)
focus
found within
3sec ?
µ
P accelerates
disc to nom. speed
µ
P sends
command to CD7:
“switch laser on”
radial&jump
check error ?
release MUTE
µ
P initializes
radial servo loop
N
Y
Y
Y
subcode check
error ?
Y
N
N
N
PLAY-MODE
subcode check
error handler
radial check
error handler
Y
N
focus search
error handler
retry
focus search ?
display shows
“no disc”
start-up stopped
display shows
“Error”
start-up stopped
disc at nom.
speed within
6sec ?
3-4
CS 46 465
