Diagnosis; Power On Sequence - Pioneer DDJ-RB Service Manual

1

5. DIAGNOSIS

5.1 POWER ON SEQUENCE

A
Power ON
Operation clock setting: 144 MHz
Mute: ON
Peripheral device power: ON
B
Update
mode ?
No
Loading the program from
FLASH to RAM
Start-up
Oscillation of
peripheral module clock starts
C
Start-up of real time OS
Start-up of each task
Initial settings of related port
Related register/
RAM returns to a default
Generation of tasks Start-up
Power supply control task
LED control task
D
KEY input control task
AD input control task
LED/KEY scan control task
JOG input control task
USB control task
DMA control task
Serial FLASH control task
E
DAC control task
Audio control task
MIDI control task
Service mode control task
System control task
ENCODER control task
Illumination control task
F
Demo mode control task
*In the order of
start-up
10
1
2
Yes
2
3
Starting opening indication
Operation mode
judgment
Customized setting mode
Service mode 1
Version check mode
Check mode of the buttons,
knobs, etc.
Factory reset mode
Voltage value display mode
Voltage value fluctuation
range check mode
Service mode 2
Measurement mode of the
load of JOG dial
Photo interrupter
check mode
Utility setting mode
Update mode
*To normal main
loop processing
Power failure monitoring
Power voltage monitoring
Detection of change in
operating elements
USB transmission
(sending operating element
information, MIDI/HID)
USB reception
(reception and indication of
LED display data)
Audio control
DDJ-RB
3
4
Normal mode
4