AVR 500 (serv.man11) - Harman Kardon Audio Technical Bulletin (repair manual)

avr 500 (serv.man11) technical bulletin
Model
AVR 500 (serv.man11)
Pages
2 Few pages! See other manuals at the bottom of the first or last page.
Size
193.97 KB
Type
PDF
Document
Technical Bulletin
Brand
Device
Audio
File
avr-500-sm11.pdf
Date

Read Harman Kardon AVR 500 (serv.man11) Technical Bulletin online

 
harman/kardon Incorporated  250 Crossways Park Drive, Woodbury  New York 11797  (516) 496-3400 
 
 
harman/kardon          
 
Service Bulletin
 
 
Service bulletin # H/K2000-05  May 2000 
 
 
 
Warranty labor rate: MAJOR repair 
 
To: 
  All harman/kardon Service Centers 
 
Models: AVR300, AVR500 
 
Subject: Volume Level Changes 
 
On early versions of the AVR300 or AVR500 the volume level may change by itself, or when the volume knob 
is tapped. This may happen on an occasional random basis and depends on where the volume control knob is 
positioned after a volume adjustment.  During a running production change, new volume encoders were 
installed. 
 
In the event you receive an AVR300 or AVR500 with the complaint “The volume on my receiver 
changes by itself”, perform the following procedure: 
 
REPLACE VR901 VOLUME ENCODER 
 
1)  Remove the top cover, (14) Black Phillips screws. 
2)  Remove the (11) Black Phillips screws holding the plastic front panel to the chassis. 
3)  Remove the single Phillips screw on both right & left side of the chassis with a dual black ground wire. 
4)  Remove the volume, bass, treble and balance knobs by pulling them straight off. 
5)  Remove the single nut holding the volume encoder to the front panel. 
6)  Pull the loaded front panel off the chassis; cut any plastic cable ties necessary to fully disengage it 
7)  Lift and set the receiver on its right side for the remainder of the procedure. 
8)  Remove molex connector CN983 at the power switch; see Figure 1. 
9)  Pull the front panel as far away as the remaining connecting wires will allow. 
10) Unsolder the connections at the rear of the front PCB to the volume encoder. 
11) Using a “stubby” Phillips screwdriver, remove the (19) Black Phillips screws holding the front PCB to the 
front panel; two plated screws at the rear of the headphone jack also must be removed. 
12)  Pull the front PCB away from the front panel. 
13) Remove and replace the volume encoder with h/k part# J32612050102; resolder the new encoder in place. 
14) Replace the front PCB and reassemble the receiver in reverse order, following the instructions above.  
Replace all cable ties that were cut, and reattach any connectors that were unplugged.  Make sure the two 
ground wires on both sides of the receiver are reattached. 
15) Power up receiver, and test volume control to assure it no longer changes settings by itself, or when the 
volume knob is tapped. 
 
 
 
 
harman/kardon Incorporated  250 Crossways Park Drive, Woodbury  New York 11797  (516) 496-3400 
 
 
Models: 
AVR300, 
AVR500 
     Subject: 
Volume 
Level 
Changes 
 
 
 
Model Serial 
Number 
120V 
Serial Number 
230V RDS 
 
STATUS 
 
ACTION 
 
AVR300 
 
 
 
AVR500 
 
TH0001-01000 
To 
TH0001-08402 
 
TH0002-01000 
To 
TH0002-05565 
 
 
TH0005-01000 
To 
TH0005-01001 
 
TH0006-01000 
To 
TH0006-01001 
 
 
 
Volume level changes by 
itself or when volume 
knob is tapped 
 
 
Change VR901 
Rotary encoder 
 
AVR300 
 
AVR500 
 
 
TH0001-08403 
Or higher 
TH0002-05566 
Or higher 
 
TH0005-01002 
Or higher 
TH0006-01002 
Or higher 
 
 
 
Modified by factory 
 
 
NONE REQUIRED 
 
 
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Here you can read online and download Harman Kardon AVR 500 (serv.man11) Technical Bulletin in PDF. AVR 500 (serv.man11) technical bulletin will guide through the process and help you recover, restore, fix, disassemble and repair Harman Kardon AVR 500 (serv.man11) Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.