JVC KD-DV5000 Service Manual page 20

4.4 For the adjustment of the jitter after replacing the pickup
Connecting diagram 2 of extension cable
Procedure
Remove the screws attaching the backend board from the mechanism side, connect the backend board to the connectors (26pins/
20pins) on the main board.
After attaching the top chassis and front panel assemblies to the main board, attach the extension studs (STDV001-3P) on the
top chassis and then attach the mechanism assembly with the nuts.
Extension stud
STDV001-3P
Backend board
1-20 (No.49879)
Nut
Main board
Extension stud
STDV001-3P
FFC extension cable
EXTDV001-50PF
Disconnect the FFC cable