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DIAGNOSTIC PROGRAM
■ Initial Setting
1. Connect the AC adaptor.
2. "Main" volume: MAX
3. "MIC" volume: MIN
■ How to start diagnostic program
1. Set the "POWER" switch to "ON (NORMAL)" while pressing the "0" button.
2. The massage “628 TEST” is displayed on LCD.
3. Release the “0” button.
■ Diagnostic program
Message on LCD
1. MODE Switch check
1 Set to “CASIO CHORD” position. Casio
2 Set to “FINGERED” position. Frigerd
3 Set to “NORMAL” position. Normal
2. SWITCH check
1 Press “0” button. Switch
2 Press the buttons in the following order.
01 02 03
04 05 262728
SwitchOK
07
06
08
09
10
11
232425
12 13 14
18 17 16 15
19 20 21 22
* Wait for confirmation sound.
* The Button number appears on the LCD.
* A buzzer sounds if buttons are pressed in a wrong order, and "CER" appears on LCD.
NOTE: This check cannot be aborted in mid-course.
3. AC adaptor check
1 Press “SONG BANK” button. AC JACK
4. ROM check
1 Press “2” button. ROM OK
5. MODEL check
1 Press “1” button. 628vr050
6. ROM version check
1 Press “3” button. 01181626