DOWNLOAD Harman Kardon AVR 20MK II Service Manual ↓ Size: 10.45 KB | Pages: 1 in PDF or view online for FREE

Service bulletin # 9601 -January 1996

Warranty labor rate: MINOR repair

To: All harman/kardon Service Centers

Models:AVR-20/AVR-20II Surround receiver/amplifier
             AVR-25/AVR-25II

Subject: Poor or intermittent reception of FM
_____________________________________________________________________________________

In the event you receive a unit from a consumer with a complaint “FM cuts out intermittently” use the
procedure listed below in addition to the procedure listed in the service manual for FM alignment.

To supplement the manual, for FM center tuning alignment follow these procedures;

Alignment

Equipment

 settings

Adjust

Adjust

For

Quadrature

Tune to a known strong FM
station around center of the
band (98.1MHz)

T803

0 VDC across R809, confirm by tuning to
another strong station.

Repeat step 1 in service manual for minimum distortion. Repeat both steps again for optimum sensitivity.

*note: step #4 in AM  IF states adjustment point VR802, should be VR801
           step #2 in FM IF states adjustment point VR801, should be VR802

Alignment

Equipment

 settings

Adjust

Adjust

For

Quadrature

Tune to a known strong FM
station around center of the
band (98.1MHz)

T903

0 VDC across R914, confirm by tuning to
another strong station.

Repeat step 1 in service manual for minimum distortion. Repeat both steps again for optimum sensitivity.

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