User Guide

2
( ) Tighten both screws firmly, but DO NOT over-compress the rubber grommets.
( ) Note that the fan blade is marked to indicate the location of the setscrew. Place the fan
blade over the motor shaft with the hub and setscrew toward the chassis.
( ) Lower the fan blade until there is about ¼” clearance between the fan blade and the
chassis. Now tighten the setscrew. Spin the fan blade to assure that there is clearance
with the chassis and other nearby components.
( ) With the chassis upside down, determine where the motor leads should be cut so they can
be spliced with the black power leads. Cut and strip both motor wire leads and power
leads.
( ) Twist the power leads to the motor leads and secure with blue wire nuts.
( ) Reinstall the tubes and perforated top cover. Place the amplifier back into the cabinet.
This completes the replacement of the fan motor on your SB-200. You will notice a big
difference in fan noise. The new fan and motor assembly is much quieter than your old motor and
moves more air for better cooling.
HARBACH ELECTRONICS
Jeff Weinberg – W8CQ
468 County Road 620
Polk, OH 44866-9711
[phone]
http://www.harbachelectronics.com
[e-mail]