Power On Sequence - Pioneer CDJ-800MK2 Service Manual

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7.1.4 POWER ON SEQUENCE

QQ
POWER ON SEQUENCE
3 7 63 1515 0
A
RESET IC IC304 (Reset IC)
MPU IC301(MPU)
FPGA IC302(FPGA)
IC701(DSP)
B
DSP
IC701(DSP)
IC101 (Servo DSP)
ServoDSP
Tracking and focus offset adjustment
Spindle kick & focus sweep & focus on
CD-DRIVE
C
Spindle acceleration 100msec
TE
L 13942296513
Tracking balance adjustment (T open)
D
CD-DRIVE
TOC read
The 1st time carries out TOC
position memory by stepper
accuracy after power on.
Search the first tune
E
As CD-DRIVE is same as CDJ-800MK2' Function is as same it too.
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POWER ON
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.
Play (mute off)
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CDJ-800MK2
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8
2
RESET ROOT
IC502 (Reset IC) RESET START
IC501(DISPLAY-MPU) Reset receiving pin 12
IC501(DISPLAY-MPU) Indication 'POWER
# 'POWERON' is inside data of DISPLAY-MPU.
IC501(DISPLAY-MPU) Communication start to
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.
Q Q
3 6 7 1 3
GFS : RF LOCK
When TOC read is completion
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3
4
2 9 9 4 2 8
DATA-FL/JOG-FL
Indication
RESET IC
ON' DISPLAY
MPU
MPU
1 5 0 5 8 2 9 9 4
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4
9 9
2 8 9 9