Read Harman Kardon HD 990 (serv.man6) Service Manual online
harman/kardon
Service Bulletin
HD 980/HD 990
May 2012
Harman International
8500 Balboa Blvd., Northridge, CA 91329, USA
Service bulletin # HK2012-002
To:
All Harman Kardon Service Centers
Models:
HD 980/990
Subject:
Rattle noise
In the event you receive a unit with the complaint “Periodic mechanical noise from the CD player”.
Perform the following repair: Add damping pads to prevent rattling.
Rattling noise is related to the spinning disc not being completely balanced or centric
.
Parts: Pads – Part number: EDV3485ORATTLE (5 sets of 4 pads).
Procedure:
Please mount 2x2 damping-pads as shown in the pictures.
Note: There should be no marks in the surface or stickers on the disc, causing imbalance when the disc is spinning.
Even original discs may not be fully centric.
Model
Serial number Status
Action
PN used
HD 980/990
All
Rattle noise
Add damping pads
EDV3485ORATTLE
