Diagnostic Program - Casio LK-300TV Service Manual

I Initial Setup
1. Connect the AC adaptor.
2. Connect a Sustain pedal.
3. Setting SD card into slot.
3. "MODE" switch: NORMAL
4. "MAIN VOLUME": MAX
5. "MIC VOLUME": MIN
NOTE: If there is no Sustain pedal, Sustain pedal check can be skipped.
I How to start diagnostic program
1. Press and hold the "0" and "9" buttons.
2. Press the "POWER" button.
3. The massage "TST" is appears on LCD.
4. Release the "0" and "9" buttons.
I Diagnostic program
1. SWITCH check
1 Press "0" button.
* Wait for confirmation sound.
2 Slide switches or press buttons in the order from No.01 to No.49.
* Confirmation sound sounds.
* The Button number appears on the LCD.
* A buzzer sounds if buttons are pressed in a wrong order, and "NG" appears on LCD.
NOTE: The button numbers are written in hexadecimal numerals.
3 Press the "LAYER" button the last.
* Wait for confirmation sound.
* The massage "COK" is appears on LCD.
NOTE: This check cannot be aborted in mid-course.
5
7 8
6
4
3
2
C
2. AC adaptor check
1 Press "–" button.
3. Pedal check
1 Press "1" button.
2 "Sustain pedal": ON
3 "Sustain pedal": OFF
4. ROM check
1 Press "2" button.
* Confirmation sound sounds.
5. MODEL check
1 Press "3" button.

DIAGNOSTIC PROGRAM

9 0
A B
D E F G H I
— 6 —
X
W
V U T
S R
J K L M
Z c d
Y
[ b e
\ a f
1 ]^ g
Q P
h i
N O
Message on LCD
JOK
TCH
SUS
OOK
664