![background image](http://html.mh-extra.com/html/yamaha/2/2_service-manual_896563086.webp)
86
Tyros2
MO
TR
OWNE
BEDIE
MODE
72
072:RAM Chk2
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)
73
073:Flash Chk2
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”
.
74
074:Wave ROM Chk2
Checks all wave ROMs. (It takes about 2 minutes.)
Confirm that the LCD shows
“OK”
.
In case of NG, the LCD shows
“NG”
.
75
075:Wave RAM(SDRAM) Chk2
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)
76
076:Wave RAM(DIMM) Chk2
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)
77
077:Effect RAM Chk2
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)
94
094:Factory Set
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”
.
95
095:Test Exit
Test Exit
The system exits the test program and returns to the play mode.
* 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.
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Страница 47: ...47 Tyros2 2NA WE84370 2 2 F F to DAC2A CN101 to LCL CN1 to AJK CN7 Pattern Side ...
Страница 57: ...57 Tyros2 Note See parts list for details of circuit board component parts P P Pattern Side 2NA WE81690 4 ...
Страница 61: ...61 Tyros2 Note See parts list for details of circuit board component parts R R Pattern Side 2NA WE81690 4 ...
Страница 64: ...64 Tyros2 Note See parts list for details of circuit board component parts PNR Circuit Board T T ...