Power On Sequence - Pioneer CDJ-200 Service Manual

Compact disc player
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1

7.1.2 POWER ON SEQUENCE

A
Reset of IC120 (CPU) (65 pin) canceled
Program from the flash ROM of IC120 (CPU) copied
Reset of IC119 (DSP) (44 pin) canceled
Program for IC119 (DSP) copied
Reset of IC501 (Display microcomputer) (18 pin) canceled
B
Reset of IC105 (Servo DSP) (90 pin) canceled
Inside switch checked
Tracking and focus offset adjustment
C
Spindle Kick, and focus search and focus on
Spindle accelerated (100 ms)
D
Tracking balance adjustment (T open)
E
If TOC and TEXT exist, data
are read (if data are read for
the first time after the power
is turned on, data on TOC
positions are stored in
memory with an accuracy of
the stepper motor).
First track is searched
F
58
1
2
Power ON
Disc loading
LD On
FOK check
CLV Servo ON
Waiting (300 ms)
T close
GFS check
Focus balance adjustment
Focus gain adjustment
Tracking gain adjustment
RF gain adjustment
If the unit is in the program area,
it jumps back to the TOC area.
Playback (mute off)
2
3
If these fail once, the S-curb level is measured when the
lens is lowered.
If the S-curb level is 0.88 Vp-p or less, RW mode is entered.
The gains of the OEIC and RF are raised, then focus is turned ON.
If these fail three times, EJECT is displayed and Disc unloading.
If TOC data have been read
CDJ-200
3
4
4

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