Yamaha TYROS 2 Service Manual page 86

Tyros2
72 072:RAM Chk2
73 073:Flash Chk2
74 074:Wave ROM Chk2
75 075:Wave RAM(SDRAM) Chk2
76 076:Wave RAM(DIMM) Chk2
77 077:Effect RAM Chk2
94 094:Factory Set
95 095:Test Exit
* 0dBu=0.775Vrms
* If a 30 ohm load is used instead of a 33 ohm load, the actual value becomes -0.6dB lower than the value written in this
test item list.
86
Checks all RAMs connected to the CPU bus.
Confirm that the LCD shows "OK".
In case of NG, the LCD shows "****** NG". (******:RAM's name)
Checks all the flash memories connected to the CPU bus.
(It takes about 4 minutes.)
* Never turn off the product while executing the test.
Confirm that the LCD shows "OK".
In case of NG, the LCD shows "NG".
Checks all wave ROMs. (It takes about 2 minutes.)
Confirm that the LCD shows "OK".
In case of NG, the LCD shows "NG".
Checks all wave RAMs(SDRAM).
Confirm that the LCD shows "OK".
In case of NG, the LCD shows "****** NG" or "****** No Card".
(******: SDRAM's name)
Checks all wave RAMs(DIMM).
Confirm that the LCD shows the memory capacity of DIMM as follows.
(The capacity is not checked automatically.)
"OK(DIMM H:512MB.L:512MB)"
In case of NG, the LCD shows "NG(DIMM:512MB.L:512MB)******".
(******: DIMM's name)
Checks all effect RAMs. (It takes about 20 seconds.)
Confirm that the LCD shows the following messages.
"Effect Chk2 OK"
In case of NG, the LCD shows "****** NG" (******: RAM's name)
Factory set
The data of flash ROM is initialized to factory preset when the power is
turned on again.
Confirm that the LCD shows "OK".
Test Exit
The system exits the test program and returns to the play mode.
MO
TR
OWNE
BEDIE
MODE