Yamaha TYROS 2 Service Manual page 85

60 060:USB Connect Chk
61 061:USB Strage Chk
63 063:DGA(HDD) Chk
64 064:DGA(TG) Chk
65 065:Keybord Type Chk
69 069:After Touch Chk
71 071:ROM Chk2
Checks the USB connections.
Start testing without connecting a USB cable.
Connect the [USB TO HOST] terminal and the [USB TO DEVICE] on the
rear panel.
Confirm that the LCD shows "Device-Host1 Chk OK".
Also, connect a USB storage device to the [USB TO DEVICE] terminal on
the front panel.
Confirm that the LCD shows "Device-Host2 Chk OK".
In case of NG, the LCD shows "NG".
Checks the USB storage device.
Connect the USB storage device to the [USB TO DEVICE] terminal on the
front panel.
Confirm that the LCD shows "OK" at that time.
In case of NG, the following messages are indicated on the LCD.
"NG": (Read/Write error)
"NO DISK": (Media not ready)
"UNFOTMAT DISK": (Media unformatted)
"PROTECT DISK": (Media write protected)
Checks DGA(HDD).
Confirm that the LCD shows "DGA(HDD) Chk OK".
In case of NG, the following messages are indicated on the LCD.
"NG(DGA SDRAM)": SDRAM wire connection error
"NG(HDD CONNECT)": HDD connection error
"NG(HDD READ)": HDD read error
"NG(HDD WRITE)": HDD write error
"NG(HDD-DGA)": DMA transfer error between HDD and DGA
"NG(HDD-CPU)": DMA transfer error between HDD and CPU
"NG(DGA IRQ*)": IRQ* wire connection error (*: 0,4,5)
Checks DGA(TG).
Connect the headphones to the [PHONES] jack and confirm that the
specified note sounds as follows.
Switch the two signal lines (LINE-A and LINE-B) by pressing the TAB[<] or
TAB[>] button.
LINE-A: The note of A3 is heard from the center.
LINE-B: The note of A7 is heard from the right. (It sounds for three
seconds, stops for 0.5 seconds, and repeats it.)
Checks the keyboard type.
Confirm that the LCD shows "OK(FSX61)".
In case of NG, the LCD shows "NG(******)". (******: Keyboard name)
Checks the after touch.
After the LCD shows "After Touch Chk Start", press any key.
Confirm that the note of C3 sounds at that time.
Confirm that the value on the LCD increases according to the pressed
strength.
Confirm that the note of C4 sounds and the LCD shows "OK" when the
value reaches 127 (maximum).
*At this test, pressing the leftmost key does not make the system return to
the wait state.
Press the [STYLE START/STOP] button to return to the wait state.
Checks all ROMs connected to the CPU bus. (It takes about 30 seconds.)
Confirm that the LCD shows "OK".
In case of NG, the LCD shows "****** NG". (******: ROM's name)
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