DOWNLOAD Harman Kardon AVR 85 (serv.man7) Service Manual ↓ Size: 59.28 KB | Pages: 3 in PDF or view online for FREE

TOOLS REQUIRED

: 

 

1)  

10 Ohm, 10W resistor with alligator clip leads at each end  

 

 

 

          

2)  

1 pair of cutters/dikes (to cut connections & remove bottom panel) 

3)  

1 Phillips screwdriver  

4)  

1 small flat blade screwdriver or utility blade 

5)  

Solder-wick 

6)  

Soldering iron 

7)  

Solder 

8)  

3 loudspeakers (for final testing) 

9)  

Bottom panel screws (12 per unit); (H/K# 51260306MO)  

10)  

Working AVR85 remote control 

 

1)  

  Make sure the receiver is OFF and unplugged.  

 

 

2)  

 Position the unit on its side, facing it so you are looking at the bottom cover, with the front of the 

receiver facing left.  The power transformer should be down, or nearest the work bench. 

 

 

3)  

 Remove the front right “foot” of the unit; then with a sharp pair of dikes or wire cutters cut  the 

(16) metal  connections on the bottom screen attaching it to the bottom cover.  Remove bottom 
screen from unit; for safety continue to cut all the remaining severed metal tabs from the bottom 
cover. 

 

 

4)  

Locate and discharge main power supply electrolytic capacitors C802 & C803 with a 10 ohm, 10 

watt resistor.  At this point, C802 & 803 are at the top of the main PCB; The two leads to C803 can 
be identified by the marking “-B” on the PCB.  C802 is just above it; the upper capacitor terminal itself 
is difficult to access, so the cap should be discharged from the trace. 

 

 

5)  

After discharge, check with voltmeter that capacitors have less than 1 volt DC across leads to 

confirm that discharge is complete. 

 

 

6)  

 See drawing; locate two areas of a poor solder connection due to an unintended mask, or dark-

colored dot that is partially covering the solder pad(s) where the leads come through.  Unsolder the 
connection(s) with solder wick.  Clean & scrape, if necessary, with a small screwdriver the foil/pad 
area thoroughly and remove any excess mask residue.  Re-solder the connection(s) carefully to 
assure good connections. 

 

 

7)  

 Re-attach the bottom screen to the bottom cover using 12 screws, (H/K# 51260306MO); the 

screen will be upside-down compared to its former position when attached; replace the unit’s “foot”. 

 

 

8)  

 TO TEST: 

a)  

Plug in the unit; connect speakers to left, right, and center output terminals. 

b)  

Turn the unit on; switch the unit to “Prologic” mode by use of the mode buttons on the front panel. 

c)  

Press the button “TEST TONE” on the remote control.  The display should read “FRONT L” and 

“TEST” should flash. 

d)  

Adjust the master volume, and verify test noise is heard from front left channel. 

e)  

Press the button “CH SELECT” on the remote control to change to the right and center speakers, 

and verify test noise is heard from each one. 

f)  

Press the button “TEST TONE” on the remote control again to exit the test. 

 
 

AVR85 

 

MJ0011-01001 

to 

MJ0011-02500 

MJ0012-01001 

to 

MJ0012-01500 

Poor connections 

in two areas on 

main PCB 

Clean & re-solder 

connections 

 

AVR85 

 

MJ0011-02501 

and above 

MJ0011-01501 

and above 

Modified by 

factory 

NONE REQUIRED 

 

 
 
harman/kardon Incorporated       80 Crossways Park West, Woodbury  New York  11797  (516) 496-3400

 

 
 

 
 
View is upper left-hand corner of PCB 
   

 Bottom (trace) side

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
harman/kardon Incorporated       80 Crossways Park West, Woodbury  New York  11797  (516) 496-3400