Start-Up Screen (Normal State); Start-Up Screen (When An Error Is Detected); How To Carry Out Tests - Yamaha TYROS4 Service Manual

Tyros4

Start-up screen (normal state)

ＴＥＳＴ
Ｄｅｖｉｃｅ Ｃｏｎｎｅｃｔｉｏｎ Ｃｈｅｃｋ
［Ｉｎｔ．ＨＤＤ］：Ｄｅｖｉｃｅ ｆｏｕｎｄ
［Ｅｘｐ．Ｍｏｄｕｌｅ］：Ｄｅｖｉｃｅ ｆｏｕｎｄ
"SwErr"
(A panel switch is being pressed. Displays up to two codes for panel switch held down in four fi gures in hexadecimal notation.)
"[Int. HDD] : No Device"
(No HDD is installed.)
"[Exp. Module] : No Device"
(No fl ash memory expansion module is installed.)

2-1: How to carry out tests

1) When the test program is started, "TEST" will be displayed.
2) To increase test item number: Press the [TEMPO+] button or turn the [DATA ENTRY] dial clockwise. (Fig. 1)
To decrease test item number: Press the [TEMPO–] button or turn the [DATA ENTRY] dial counterclockwise. (Fig. 1)
To execute the test:
Indication of "--" underneath of each test items is shown as progressing the test and in case of asterisks " * " is shown as
progress bar when the test takes time such as "Memory Check1 All", "Backup ROM Check1, 2", "Wave ROM Check 2" etc.
• If the test result is OK:
Press the [START/STOP] button again to go back to the item selection display. (Fig. 1)
• If the test result is NG:
Press the lowest key (C1) on the keyboard or the [DEMO] button to go back to the item selection display. (Fig. 1)
([START/STOP] button is ineffective in case of NG)
66
Press the [START/STOP] button once. (Fig. 1)

Start-up screen (when an error is detected)

ＴＥＳＴ
ＳｗＥｒｒ：ｘｘｘ．ｙｙｙ
Ｄｅｖｉｃｅ Ｃｏｎｎｅｃｔｉｏｎ Ｃｈｅｃｋ
［Ｉｎｔ．ＨＤＤ］：Ｎｏ Ｄｅｖｉｃｅ
［Ｅｘｐ．Ｍｏｄｕｌｅ］：Ｎｏ Ｄｅｖｉｃｅ
xxx and yyy : Codes of pressed switch