45
DTXPRESS
■
SYSTEM BOOTING FLOWCHART
(Sequence to turn on the power)
Turning on the power while pushing each of following switches results in the corresponding function.
• [SHIFT] ............................................... Version indication
• [PAGE ] + [PAGE ] ....................... Factory setting
• [DRUM KIT] + [SAVE/ENTER] ........... Test mode start
Version display
Start-up sequence completed
Error message indicated
Power ON
CPU RESET cancelled
Sound source RESET cancelled
CPU initialized
DAC RESET cancelled
DAC initialized
LED initialized
LCD initialized
7 segment LED initialized
FLASH save data
loaded into SRAM
Damaged
No damage
Factory Set executed (a)
Succeeded
Failed
SW push status obtained (b)
1
Factory Set executed
SW push status (b)
[PAGE ] + [PAGE ]
Wait for about 1sec
Normal start-up
LCD indication
Data initialization message indicated
Was Factory Set (a)
initialized successfully?
Yes
No
1
CPU RESET signal L
→
H (DM IC16-pin1)
DAC RESET signal L
→
H (DM IC15-pin5)
When there is a problem with LCD access, the process stops here.
Then DM IC16-pins 125 and 126 conditions are as follows.
[KIT] + [SAVE/ENTER]
[SHIFT]
SW push status (b)
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