Yamaha TG77 Manuel d'installation - Page 6

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Yamaha TG77 LCD Replacement Guide

Fig. 3 - Contrast resistor labeled R476 and contrast potentiometer labeled

VR301 CONTRAST VOL. Both located in the Upper Right Corner

Step 1:

Both the contrast resistor labeled R476 and the contrast potentiometer

labeled VR301 CONTRAST VOL. need to be removed and replaced.

These parts are both located in the upper right corner as shown in the

photo above, Fig. 3. In order to desolder these parts the circuit board

needs to be removed and flipped over. The circuit board is held in place

by 7 screws on the inside as shown in Fig. 4 on page 5 and another 6

screws on the back as shown in Fig. 5.

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