Diagnosis; Power On Sequence - Pioneer DDJ-ERGO-V Service Manual

1

5. DIAGNOSIS

5.1 POWER ON SEQUENCE

A
B
C
D
Resetting the USB Controller
(TUSB3200A)
E
F
14
1
2
Power ON
Operation clock setting: 32 MHz
Port initial setting
I2C serial initial setting
Peripheral device power: ON
Waiting until power supply
stabilizes then performing
power-failure detection
Power failure?
N
Starting opening indication
Canceling reset of the USB
Controller (TUSB3200A)
Finishing opening indication
Power failure?
N
Y
Power voltage
< 4.2 V?
N
Checking communication
with the USB controller
Has communication
been established?
Y
CRC check of the main flash
CRC error?
(FLASH NG?)
N
A
DDJ-ERGO-V
2
3
Y
Unit stopped by power failure
Power failure indication by LEDs
Note: The TUSB3200A is started up after
loading the program from the EEPROM.
Y
Unit stopped by power failure
Power failure indication by LEDs
N
Abnormal stopping of the TUSB3200A
LED indication for USB controller error
Y
Waiting for a recovery/updating request
LED indication for flash ROM error
Note: Start the updating program on the PC.
3
4
4