Casio CTK-611 Manual do Utilizador descarregar pdf (Página 13)

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3) Equipment connection/Procedure

Vop voltage setting

Output

Set Voltmeter

TP2

Input

Connection

Input

Point

Input

Signal

Adjust

Output

Connection

Output

Point

Adjust for

VR410

Voltmeter TP2

Adjust for 4.3 to 4.4 V read-

ing on voltmeter under the

temparature 20 to 25 °C.

Make fine adjustment accord-

ing to the following instruc-

tion.

51.74°

LCD

Eye

Watching the LCD at a 51.74° angle to the horizontal, adjust Vop

voltage so that unenergized segments are seen dimly.

ADJUSTMENT

DISPLAY PCB

1) Items to be adjusted:

2) Adjustment and Test Point Locations

(TOP VIEW)

VR401

TP2

Item Measuring Instrument

Vop voltage setting Voltmeter

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 24 25

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Casio CTK-611 Manual do Utilizador Página 13