Harman Kardon AVR 4500 (serv.man11) Service Manual / Technical Bulletin ▷ View online
harman/kardon, Incorporated
250 Crossways Park Dr. Woodbury, New York 11797
harman/kardon
Service Bulletin
Service bulletin # H/K2002-07 October 2002
Warranty labor rate: MINOR repair
To: All harman/kardon Service Centers
Model:
AVR320/AVR4500
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.
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).
4) Test the unit, replace the access cover (grille).
MODEL
SERIAL NUMBER
230V STATUS ACTION
AVR
4500
All serial numbers
affected
Connections may need
repair or re-soldering
Check for broken connections and sufficient solder
on Main PCB
Display
