Harman Kardon AVR7000 Preliminary Service Manual page 20

harman/kardon
Service bulletin # H/K2000-03 Rev1 June 2000
To: All harman/kardon Service Centers
Models: AVR7000
Subject: Video Signal, Color Shift
In the event you receive an AVR7000 receiver with the complaint "when the video signal is routed
through my AVR7000, there is a noticeable color shift with certain program material", perform the
following modification:
1. CHANGE R691 ON THE VIDEO BOARD
CAUTION: THE AVR7000 CIRCUITS ARE ELECTROSTATICALLY SENSITIVE.
TO PREVENT DAMAGE TO THE RECEIVER, FOLLOW PROPER STATIC CONTROL PROCEDURES.
a) Remove the top cover, (16 Black Phillips screws).
b) Locate the Video PC Board; it is the uppermost PCB and located at the rear corner of the receiver. See
illustration.
c) Remove R691 and replace with 7.5kΩ 1/10W (h/k part#
2. REMOVE C677
If the part is present, locate and remove C677 SMD capacitor on the same (video) PCB. See illustration.
Test all major functions and confirm the color shift or original problem when the same program is played is
no longer occurring; replace top cover.
NOTE: In early AVR7000 schematics, R691 was erroneously marked as 47 kΩ.
R691 Modification
Model Serial Number 120V
TH0003-01000
AVR7000
To
TH0003-05222
TH0003-05223
AVR7000
Or higher
harman/kardon Incorporated 250 Crossways Park Drive, Woodbury New York 11797 (516) 496-3400
C677 Removal
Serial Number 120V
TH0003-01000
To
TH0003-03213
TH0003-03214
Or higher
Service Bulletin
Warranty labor rate: MINOR repair
260-7.5
).
STATUS
Color shift in TV picture when
using Video inputs and outputs.
Modified by factory
ACTION
Change R691
From 4.7kΩ to 7.5kΩ;
Remove C677 if necessary
NONE REQUIRED
20