Start-Up Procedure - Philips EXP210 Service Manual

START-UP PROCEDURE

Start-up procedure for ext.DC supply,
POWER OFF
no accu inserted, hold-switch in off pos.,
(stand-by)
ESP on, resume-mode off, CD-door closed.
N
PLAY
pressed ?
Y
µP resets DSP
(via RESET )
N
DSP ready
within ~5s ?
Y
µP initializes
DSP with default
parameter/settings
DSP outputs servo
signal for disc motor
(DM_PWM 50% duty)
µP switches
servo driver on
(via S_MUTE)
DSP sends to CD10:
"move slide inside"
(DM_PWM 75% duty)
and "accelerate disc"
inner switch N
closed within
~6s ?
Y
µP sends
command to CD10:
"move slide outside"
inner switch
N
open within
~0.1s ?
Y
DSP sends
commands to CD10:
"slide servo off"
DSP sends
commands to CD10:
"laser on"
"focus servo on"
focus found
during ramping
cycle ?
Y
re-initialize CD10 focus
N
stability test
and restart focus
ok ?
search procedure
µP accelerates
disc to nom. speed
(DM_PWM 80% duty)
re-initialize CD10
N disc at nom.
and restart focus
speed within
search procedure
~6s ?
DSP initializes
radial servo loop
(~400ms)
µP sends command
to CD10: "jump
10 tracks inside"
radial
error handler
N
jump
ok ?
subcode
error handler
N
subcode
ok ?
TOC
N
found within
~30s ?
multi-session
(TOC Mode 5)
disc ?
display shows
"nF d1SC" resp. PLAY-MODE
"UNFINALIZED DISC"
CDDA
start-up stopped
3-5
N
Y
Y
Y
Y
Y
Y
N
DSP reads TOC of
last valid session
Mixed Mode
or CD-Extra
disc?
Y
PLAY-MODE
CDDA
DSP sends new focus
parameters to CD10
(switch to higher
focus sensitivity)
Y
during ramping
looped through
switch back to
normal focus
Y
during ramping
DSP sends new focus
parameters to CD10
(switch to higher
focus sensitivity)
Y
during ramping
looped through
N
DSP reads
file system via
CD10-I2S data
display shows
PLAY-MODE "no d1SC" resp.
"INSERT DISC"
MP3
start-up stopped
focus found
cycle ?
N
already
N
all (3) focus
sensitivities
?
Y
sensitivity
focus found
cycle ?
N
focus found
cycle ?
N
already
N
all (3) focus
sensitivities
?
Y