Yamaha PF-1000 Service Manual page 11

1-4 Remove the stay existing inside of the rear panel and set
it up. (Fig. 1-2)
1-5 Spread a soft cloth or the like over the keyboard in advance
so that the top board assembly can be placed on it.
1-6 Release the stay while holding the U-shaped holder of
the top board assembly. (Fig. 1-2)
1-7 Gradually turn over the top board assembly until it lies
on the cloth spread over the keyboard. (Fig. 1-3)
Stay
Top board assembly
(Fig. 1-2)
(Fig. 1-3)
U-shaped holder
Top board assembly
PF-1000
11