Service Bulletins for Crown D-150 Stereo Amplifiers. 5 separate bulletins addressing various issues with this amplifier. These bulletins are also included in the full Crown D-150 Stereo Amplifier
Service Manual, available
HERE.
Models Applicable: D-150
Format: Download/PDF
Contents:
bulletin# 11-28-1972
Re: Substituting ua739 with ua749 & circuitry modification required
bulletin# Comp 1001
Regarding: amplifiers that exhibit a tendency toward premature thermal cutoff.
bulletin# Comp 1004
Re: CPN 3773F fairchild outputs used in D-150 batch
Re: S/N #D-4874 through/including #D-4923
Re: Replacement notes and required modifications when going from 3773F to any other 3773 version.
bulletin# Comp 1008
Applies to: SN# D-8359 to D-8728
Re: exhibit marginal THD at 400hz. Modification/fix.
bulletin# Comp 1014
Regarding issue: IM distortion out of spec.
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