250 Crossways Park Dr. Woodbury, New York 11797
Service bulletin # H/K2002-07 October 2002
Warranty labor rate: MINOR repair
To: All harman/kardon Service Centers
Subject: Intermittent Output
In the event you receive an
AVR4500 receiver with the complaint “There is intermittent output from the
receiver”, follow the instructions below:
All sources, all modes may be affected, using any audio connections; unit may also not turn off with the
system power control.
1) Turn the unit on it’s side so the bottom panel faces you, and the access cover (grille) is at the top.
Remove the (9) Phillips screws holding the access cover on; one “foot” will come off with the cover.
2) Locate and inspect all soldered connections on the Main PCB, particularly in the area of connector CN411
and CN410, the 15 pin horizontal foil patterns (see illustration).
3) Repair as needed with solder or buss wire.
4) Test the unit, replace the access cover (grille).
230V STATUS ACTION
All serial numbers
Connections may need
repair or re-soldering
Check for broken connections and sufficient solder
on Main PCB