Ajack Circuit Board; Center Panel Assembly - Yamaha PSR-S770 Service Manual

PSR-S770/PSR-S970
4.

AJACK Circuit Board

(Time required: About 5 minutes)
4-1. Remove the lower case assembly. (See procedure 2.)
4-2. Remove the two (2) screws marked [440B] on the rear
and the seven (7) screws marked [430A]. The AJACK
circuit board can then be removed. (Fig. 3)
* When installing the AJACK circuit board, tighten the
screws z and x shown in Fig. 3 in numerical order
and then tighten the other screws.
<PSR-S970 Bottom view>
KEYBOARD ASSEMBLY
<PSR-S770 Bottom view>
KEYBOARD ASSEMBLY
14
5.

Center Panel Assembly

(Time required: About 6 minutes)
5-1. Remove the lower case assembly. (See procedure 2.)
5-2. Remove the seven (7) screws marked [510A] and the
screw marked [440C]. (Fig. 4)
5-3. Remove the encoder and volume knobs. (Fig. 5)
5-4. Remove the screw marked [510B]. The center panel
assembly can then be removed. (Fig. 5)
* When installing the center panel assembly, fit claws of
the center panel into the holes in the upper case and
install the center panel in the arrow direction. (Fig. 6)
[510A] [510A]
[440C]
[420B]
UPPER CASE ASSEMBLY
[510A] [440C] [510A]
[420B]
UPPER CASE ASSEMBLY
Fig. 4
[430B]
HP
[430B]
[430B]
HP
[430B]