Origin Live Building a turntable almost from scratch - Manual (Page 16)

16
INPUT WIRES
MOTOR WIRES
CABLE CLIP
CABLE CLIP
DC REGULATOR
BOARD
ARM LEADS
DETAIL OF
DC REGULATOR
BOARD FIXING
STANDARD
TOPBOARD
SCREW
REGULATOR
BOARD
CLAMPING
WASHER
PLINTH SIDE WALL
Fit the 3 threaded support bolts
Fit the three M5 x 80mm threaded machine screw bolts (which support the springs) to the plinth top board as shown
below. Only “nip” the nuts tight by a maximum of 1/8 th of a turn after finger tightness has been achieved and they
start to clamp onto the wood. You will probably need to check these have not slackened off after about 2 months as they
tend to “bed into the wood initially.
Diagram of support bolts and spring arrangement
Serrated washer
Plain washer
Serrated washer
5mm Dia support Bolt
Plinth topboard
Sub-chassis
ring glued on supplied
Note - Small ring in thin
spring position
Spring
Rubber
Serrated washer
Nut to adjust
suspension height
Install the sub-chassis
Fit Bearing house
Fit the bearing house to the sub-chassis as shown below - only "nip" the nuts tight with a pair of pliers - more force than
this is detrimental to performance - the top of the bearing house should be between 3mm and 8mm from the top of the
bearing house nut – 3mm is probably ideal. Please note that ALL the bolts on the Sub-chassis assembly are carefully
torqued to a correct tension at factory – DO NOT TIGHTEN ANY ALLEN BOLT SETTINGS OR IT WILL
DEGRADE THE PERFORMANCE. ”. The sub-chassis is attached to the “spring plate” by one “pivot bolt” - the two
plates should be free to swivel and are loosely restrained by an “anti-rotate bolt” - this locating bolt on the side of the
sub-chassis should not be tightened at all. The pivot bolt is tightened at factory and should not be tightened or the
performance will degrade significantly.