Yamaha TYROS4 Service Manual page 91

０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
Ｄｅｖｉｃｅ−Ｈｏｓｔ （Ｒｅａｒ） ＯＫ
In case of OK ([USB TO DEVICE] (rear side) and [USB TO HOST]
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
Ｄｅｖｉｃｅ−Ｈｏｓｔ （Ｒｅａｒ） ＮＧ
In case of NG ([USB TO DEVICE] (rear side) and [USB TO HOST]
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
Ｃｏｎｎｅｃｔ Ｄｅｖｉｃｅ−Ｈｏｓｔ （Ｆｒｏｎｔ）
* When the screen appears, connect the [USB TO DEVICE]
terminal on the front side and [USB TO HOST] terminal with a
USB cable.
Checking [USB TO DEVICE] and [USB TO HOST]
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
Ｄｅｖｉｃｅ−Ｈｏｓｔ （Ｆｒｏｎｔ） ＯＫ
In case of OK ([USB TO DEVICE] (front side) and [USB TO HOST]
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
Ｄｅｖｉｃｅ−Ｈｏｓｔ （Ｆｒｏｎｔ） ＮＧ
In case of NG ([USB TO DEVICE] (front side) and [USB TO HOST]
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
ＯＫ
０４３：ＵＳＢ ｔｏ Ｄｅｖｉｃｅ／Ｈｏｓｔ Ｃｈｅｃｋ
ＮＧ
Supplement:
It is impossible to determine is the [USB TO DEVICE]
terminal or [USB TO HOST] terminal is defective in case of
NG.
The "USB Storage Check" can be used to check the
rear and front [TO DEVICE] terminals. Combine the test to
determine which terminal is defective.
Be sure to use a USB Storage whose operation is already
checked.
USB to Host ..............................A
USB to Device (Rear)................B
USB to Device ...........................C
USB to Device/Host Check USB Storage Check
A–B A–C Comment B
OK
OK OK
NG
normal
OK
NG
NG OK B defective
OK NG C defective
OK
NG NG
Any of
NG
A, B, C may
OK
be defective.
NG
Tyros4
In case of OK
In case of NG
Result
C
OK normal
OK B may be defective.
NG C may be defective.
NG B, C may be defective.
OK A may be defective.
OK A, B may be defective.
NG A, C may be defective.
NG B, C may be defective.
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