Technics SL-1500C Owner's Manual page 51

6.9.1. Removing the Queuing Knob
Step 1 Remove the Queuing Knob as arrow shown.
6.9.2. Removing the Armrest Ass'y
Step 1 Hold the Arm-height Adjuster to lift up to 6 mm.
Step 2 Remove screw.
Step 3 Remove Armrest Ass'y.
Note: When attaching and removing the Armrest Ass'y, use
a Driver Bit (No. 2) or small type of Monkey Wrench, etc. to
remove the screw because of the narrow gap (max 25 mm)
of the fixing screw part of the Armrest Ass'y. Do the same
when attaching.
Note: When using a commercially sold Board Ratchet
Driver, use a driver suitable for working in the gap of 25
mm.
25