Yamaha DSP-AX1, Service Manual

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DSP-AX1/RX-V1
DSP-AX1/RX-V1
1.DSP THR 8.MAN TST
2.DECODE THR 9.RS232C
3.RAM THR 10.PRESET
4.PRO LOGIC 11.AD DATA
5.DECODE BYP 12.STATUS
6.SP SET 13.DSP RAM
7.E.OFF/DIS 14.SUM/VER
DIAGNOSTIC MENU
●
Display at the start of DIAG
The diagnostic menu appears on the monitor screen. (It remains on display until it is canceled.)
On the FL display of the main unit, an opening message (including the version and the history of
protection function) appears for a few seconds followed by the diagnostic menu display of 1 DSP
THROUGH: ANALOG BYPS.
Version of the main/sub mi-
croprocessor (1 alphabet)
Opening message
Checksum of the main
microprocessor
NO PROTECT X/X
M:XXXX / S:XXXX
Checksum of the sub
microprocessor
DIAG menu display
1. DSP THROUGH
ANALOG BYPS
When there is no history
of protection function (*1)
(*1) If the history of the protection function has been recorded, the type of the protection function and
the voltage value recorded last are displayed.
Checksum (4 figures consisting of alphabets and numbers)
The checksum is obtained by adding 4M bits per 1 octo of the entire program code and expressing the result as a
4-figure hexadecimal data. (0xff is added for the area where no code has been entered and for the area other than
ROM code.)
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