Sequence When Power Is Turned On （ - Yamaha ACD1 Service Manual

ACD1
SEQUENCE WHEN POWER IS TURNED ON
Power ON (Reset)
CPU Reset Cancel (Starts with FlashROM)
SDRAM initialization
Sends Boot and Program to SDRAM
Starts operation of Boot with SDRAM
Lights up LCD backlight
Switch check
Checks Program checksum
Starts Program
Initializes internal device and external device
Changes LCD display
Initializes external device
Switch check
Creates internal drive
Starts tasks
Completion of basic startup sequence
Normal screen indication
VNP1 Update check
(VNP1: Network control IC)
MAC Address check
Battery check
Scene recall
94
CPU processing sequence
If switches specified for a mode are held down
If the checksum is wrong
If switches specified for a mode are held down
If the firmware of the VNP1 is updated
If no MAC address is set
If the level of the lithium battery is low
LCD screen indication
AmpControlDevice
YAMAHA ACD1
• Goes to Diagnostics mode
• Goes to OS Update mode
• Goes to OS Update mode
Copyright 2008
YAMAHA
• Goes to Initialization screen
• Goes to Format screen
YAMAHA ACD1
000:
Executes VNP1 update
Illegal MAC Adr
No Battery
Critical Battery
Low Battery