AVR 347 (serv.man2) — Harman Kardon Audio Technical Bulletin (repair manual)

Model
AVR 347 (serv.man2)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
621.37 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Audio
File
avr-347-sm2.pdf
Date

View Harman Kardon AVR 347 (serv.man2) Technical Bulletin online

 
harman/kardon, Incorporated           
       250 Crossways Park Dr.   Woodbury, New York   11797 
1
 
harman/kardon          
      
Service Bulletin
 
 
Service bulletin # HK2008-01  February 2008 
 
 
 
Warranty labor rate: MINOR repair  
 
To:  All harman/kardon Service Centers 
 
Model: AVR247, AVR347, AVR350 
 
Subject: Noise Artifacts in 1080p Video 
 
 
In the event you receive an AVR247, AVR347, or AVR350 with the following complaint: “when using a 
video source, output 1080p, there are video artifacts resembling blue/white sparkles or dots, 
particularly during dark backgrounds, with on-screen movement”, perform the following procedure: 
 
Synopsis: A resistor and capacitor in parallel should be added to the HDMI board in two places.  
Note: RoHS-
rated* soldering equipment will be required. 
 
1)  Remove the top cover. 
2)  Remove the HDMI board at the rear of the unit; there are screws at the rear, a header to unplug, a 
single molex connector, and there may be one cable tie. 
3)  Locate the two areas on the bottom side of the PCB where the following parts should be added: 
Location #1 and #2: 15pF cap (ceramic/50V) & 220kΩ (resistor 1/8 Watt/5%) 
Attach both in parallel, in both locations, JBL part# 140-50N2-150J-RC and JBL part# 299-220K-RC. 
See page 2 for details. 
4)  Replace HMDI board, all connectors, screws and cable tie.  Replace top cover. 
5)  Test unit to try and duplicate the complaint.  If the original media is not available for testing, use the 
following method: 
a. You will need a DVD player capable of and set to 1080p via the HDMI cable, connected to the 
AVR receiver. 
b. You will need DVD title “Crank”.  Select Mulit-CH PCM 6.1 audio format in the DVD’s menu. 
c.  Important: Turn on the AVR receiver and let it reach full operating temperature.  The symptom 
may not show up when the unit is cold. 
d.  Navigate in the movie to the following areas where the problem has found to be noticeable:  
Time:  Chapter 10,   0:54:08 - 0:54:12 
Time:  Chapter 10,   0:56:13 - 0:56:17 
 
 
 
MODEL 
SERIAL NUMBER 
(120V) 
SERIAL NUMBER 
(230V) 
STATUS 
ACTION 
AVR247 
All serial numbers 
affected 
All serial numbers 
affected 
May see video artifacts during 
1080p operation 
Add new capacitor, resistor 
two places to HDMI PCB 
AVR347 
All serial numbers 
affected 
All serial numbers 
affected 
May see video artifacts during 
1080p operation 
Add new capacitor, resistor 
two places to HDMI PCB 
AVR350 
All serial numbers 
affected 
All serial numbers 
affected 
May see video artifacts during 
1080p operation 
Add new capacitor, resistor 
two places to HDMI PCB 
 
* RoHS = Restriction Of Hazardous Substances. Recommended lead-free solder 96.5/3.0/0.5 
 
2
harman/kardon, Incorporated
250 Crossways Park Dr. Woodbury, New York  11797
Service bulletin # HK2008-01  February 2008
Page of 2

Download Harman Kardon AVR 347 (serv.man2) Technical Bulletin

Here you can view online or download Harman Kardon AVR 347 (serv.man2) Technical Bulletin in pdf. This Technical Bulletin can help you recover, restore, fix, disassemble and repair Harman Kardon AVR 347 (serv.man2) Audio. Information contained in Harman Kardon AVR 347 (serv.man2) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).