Panasonic PV-DF204 Service Manual page 31

4. Installation of Mechanism Chassis and Cassette Up Ass'y onto
Main C.B.A.
A. Make sure the Mode Select SW. on the Main C.B.A. is in EJECT
position. If not, rotate the Mode Select SW. until the alignment
projection is in the EJECT Position.
B. Make sure the phase hole of the Main Cam Gear on the bottom
side of the Mechanism Unit is in EJECT Position.
Fig. D8
Fig. D9
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