Diagnosis; Sequence - Pioneer CDJ-2000NXS2 Service Manual

5

5. DIAGNOSIS

5.1 SEQUENCE

POWER ON SEQUENCE
MAIN CPU
Power on
Pin G4 of MAIN CPU
(IC10) cancels reset
at H.
Initialization of the MAIN CPU
Initialization of the SDRAM
Program transfer from
FLASH to SDRAM
FPGA program start from
Pin D18 of MAIN CPU.
Pin A2 of FPGA (IC1201)
becomes "L" to "H".
FPGA Program transfer
Canceling DSP reset
from pin A14 of MAIN
CPU. Pin J14 of DSP
(IC301) becomes "H".
Program transfer to
DSP
Canceling LAN_HUB reset
from pin B14 of MAIN CPU.
Pin 16 of LAN-HUB & PHY
(IC604) becomes "H".
Register setting of LAN_HUB
Canceling USB_HUB reset
from pin D19 of MAIN CPU.
Pin 26 of USB_HUB
(IC603) becomes "H".
Register setting of USB_HUB
Initialization of the
built-in peripherals
Canceling ATAPI reset
from pin M2 of MAIN
CPU. Pin 173 of SODC
(IC7006) becomes "H".
Communication between MAIN CPU and SRVO
Communication between MAIN CPU and PANEL CPU
Communication between MAIN CPU and GUI CPU
Canceling reset Apple
AUTHENTICATION CHIP (IC14)
5
6
GUI CPU
Pin 88 of GUI CPU
(IC4604) cancels reset
at H.
Initialization of the GUI CPU
Initialization of the SDRAM
Program transfer from
FLASH to SDRAM
Initialization of the
peripheral device
Initialization of the DSP
Display an opening screen
Initialization of the SDRAM
Initialization of the DAC
Built-in peripherals
• USB_A
• ETH_MAC
• SD
• ATAPI
• SERIAL
• SSI
Device select screen
CDJ-2000NXS2
6
7
PANEL CPU
Power on Power on
Pin 12 of PANEL CPU
(IC8001) cancels reset
at H.
Initialization of the PANEL CPU
Initialization of the Jog FL
LED initial lighting
7
8
SRVO
Power on
Pin 45 of SODC
(IC7006) cancels reset
at H.
Initialization of the SODC
Initialization of the
loading mechanism
The insertion of the
disc is possible.
Initialization of the ATAPI
The insertion of the
disc is possible.
8
A
B
C
D
E
F
13