Casio LK-90TV, Service Manual

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DIAGNOSTIC PROGRAM
■
Initial Setting
1. Connect the AC adaptor.
2. Connect a Sustain pedal.
3. "MODE" switch: NORMAL
4. "Main" volume: MAX
5. "MIC" volume: MIN
■
How to start diagnostic program
1. Press the “POWER” button while pressing the “0” buttons.
NOTE: Refer to the figure below for the LCD messages that appear during the
diagnostic program.
■
Diagnostic program
Message on LCD
1. SWITCH check
1
Press “0” button. 00
* Wait for confirmation sound.
2
Slide switches or press buttons in the order from No.01 to No.2F. BUTTON NO.
NOTE: The button numbers are written in hexadecimal numerals.
3
Press the “LAYER” button the last. COK
* Wait for confirmation sound.
* The Button number appears on the LCD. BUTTON NO.
* 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.
01
02
03
04
05
06
0A
0B
07
08 09
21 22
23
24
25
26
2A
29
28
27
2B
2C
2D
2E
2F COK
1F 20
1E
1C
1D
1B
0F
0C 0D 0E
12
15
18
10
13
16 19
11
14
17
1A