AVR 500 (serv.man14) - Harman Kardon Audio Technical Bulletin (repair manual). Page 2

 

harman/kardon Incorporated  250 Crossways Park Drive, Woodbury  New York 11797  (516) 496-3400 

 

Location of IC upgrade for the AVR500/AVR7000: 

 

 

 

9)  Replace DSP PC Board back into its (3) receptacle plugs atop the MAIN PCB. 
10) Replace all screws, braces, and any cable ties that were cut during disassembly. Before tightening the 

screws, make sure all PCB’s and their RCA jacks are firmly seated in their respective holes in the rear 
backplate. If using a power tool, use care and minimum effort to avoid damaging the various plastic 
receptacles. 

11) Plug both the 22 conductor ribbon cable and the 5 conductor molex cable back into their receptacles. 
12) Replace the top cover and optical plugs. 
13) Test unit by powering up the receiver and playing a music source in the Logic 7 mode. 
 
AVR7000 ONLY: MODIFICATION OF THE DSP BOARD (replace IC101 AT27LV020A) 

 
WARNING: FOLLOW PROPER STATIC CONTROL PROCEDURES and use caution during the installation of 
new IC101 to prevent damage. 

 
1)  Remove the top cover, (16) Black Phillips screws at the sides and rear of the unit. 
2)  Locate the DSP PC Board and IC101 with the illustrations above. 
3)  Unsolder IC101 AT27LV020A and replace with hk part# J2131328001X. See illustration above for location 

on PCB. 

4)  Replace top cover and all Phillips screws. 
5)  Test unit by powering up the receiver and playing a music source in the Logic 7 mode. 
 

Model Serial 

Number 

120V 

Serial Number 

230V RDS 

 

STATUS 

 

ACTION 

 

AVR7000 

 

 

TH0003-01000 

To 

TH0003-05222 

 

Modified by factory 

 

Noise in Logic 7 Mode 

 

Replace IC101  

AT27LV020A 

 

AVR7000 

 

TH0003-05223 

Or higher 

 

Modified by factory 

 

Modified by factory 

 

NONE REQUIRED