Philips AZ7900 - Start-Up Procedure

START-UP PROCEDURE – FLOW CHART
PLAY
pressed ?
µP sends
command to CD10:
“move slide inside”
µP accelerates
disc motor for
~200ms
inner switch
closed within
~6s ?
µP sends
command to CD10:
“move slide outside”
µP sends
commands to CD10:
“slide servo off”
µP sends
commands to CD10:
“laser on”
“focus servo on”
µP resets CD10
PORES=L
µP initializes
CD10 with default
parameter/settings
inner switch
open within
~0.3s ?
Start-up procedure for ext.DC supply,
no accu inserted, hold-switch in off pos.,
resume-mode off, CD-door closed.
N
N
N
Y
TOC
found within
~5s ?
N
Y
Y
Y
POWER OFF
(stand-by)
focus
found within
~2s ?
µP accelerates
disc to nom. speed
DC/DC converter
is switched on
radial&jump
check error ?
release MUTE
µP 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 d1SC”
start-up stopped
display shows
“nF d1SC”
start-up stopped
disc at nom.
speed within
~6s ?
toggle
play mode
“normal” ↔ “CD-RW”
N
Y
focus
found within
~2s ?
3-4
CS 46 549