Power On Sequence - Pioneer CDJ-400 Service Manual

5

5.2 POWER ON SEQUENCE

POWER ON SEQUENCE
IC112 (Reset IC)
RESET IC
MPU IC114(MPU)
IC106(FPGA)
FPGA
IC105(DSP)
DSP
IC105(DSP)
IC502 (Servo DSP)
ServoDSP
Tracking and focus offset adjustment
Spindle kick & focus sweep & focus on
CD-DRIVE
Spindle acceleration 100msec
Tracking balance adjustment (T open)
CD-DRIVE
TOC read
The 1st time carries out TOC
position memory by stepper
accuracy after power on.
5
6
1
RESET ROOT
RESET START
Reset receiving pin P12
Reset receiving pin 72
Reset receiving pin 47
Program download
Reset receiving pin 90
Inside SW check
Laser Diode ON
LD : Laser Diode
Focus OK check
CLV servo ON
Wait for 300msec
Tracking close
GFS check
Focus balance adjusutment
Focus gain adjusutment
Tracking gain adjusutment
RF gain adjusutment
If it is a program area, it
jump-backs to TOC area.
Search the first tune
Play (mute off)
6
7
POWER ON
RESET ROOT
IC1101 (Reset IC)
IC1100(DISPLAY-MPU)
IC1100(DISPLAY-MPU)
# 'POWERON' data is inside of DISPLAY-MPU.
IC1100(DISPLAY-MPU)
When a check fails one times,S-curve waveform is
measured in RF gain up.
When S-curve waveform level is 0.88Vp-p or
less,focus on is carried out by OEIC and RG gain up.
When a check fails three times,display EJECT.
GFS : RF LOCK
When TOC read is completion
CDJ-400
7
8
2
RESET START RESET IC
Reset receiving pin 12
Indication 'POWER ON' DISPLAY
MPU
Communication start to MPU
8
A
B
C
D
E
F
23