Power On Sequence - Pioneer CDJ-800MK2 Service Manual

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7.1.2 POWER ON SEQUENCE

A
IC112 (System Control CPU) Reset release pin 63
IC102 (ASIC) Reset release pin 91: H
IC501 (Display CPU) Reset release pin 18: H
B
IC117 (Audio DSP) Reset release pin 44: H
IC110 (Servo DSP) Reset release pin 100: H
IC117 (Audio DSP) Program download
Tracking and focus offset adjustment
Spindle extra kick
C
Focus sweep and focus on
Focus OK check
D
Spindle acceleration 100msec
CLV servo ON
Wait for 300msec
Tracking balance adjustment (T open)
E
Address lead permission
F
60
1
2
Power ON
Begin to waver among the tri-value of 0-2.1-4.2V of IC110 pin 55.
LD ON Base voltage of Q110 becomes 3.3V.
When a check fails three times, go to the CD-RW mode.
2
3
Gain of RF amplifier ups,
and the focus sweeps it.
Focus balance adjustment
Focus gain adjustment
Tracking gain adjustment
RF gain adjustment
Search the first tune
CDJ-800
3
4
When a check fails three times,
display the error E-8301.
TOC read
Play (mute off)
4