Service Bulletin

harman/kardon

Service bulletin # 9703 June 1997

This is considered a Major Repair

To: All harman/kardon Service Centers

Models: FL8300

Subject: Dead unit, no display; Service upgrade

In the event you receive an FL8300 that is dead, and upon inspection R701 is damaged or an otherwise open circuit, perform the necessary steps listed below:

Due to current surges, early models of the FL8300 could repeatedly damage R701 (either a 1 ohm resistor or 1.5A micro fuse depending on version). Along with the replacement of R701, the positive lead should be relocated on C125 to suppress any future current surges.

Additionally, two capacitors, now designated as C907 & C908, (1uf/50v) should be added to the power supply output pins on regulator IC108 & IC111 on a unit serviced for any reason; these will add stability to help prevent oscillation.

PROCEDURE:

1)Replace R701 with micro-fuse H/K # 5508722221, this component is on PCB7.

2)A PCB trace should be cut on the C125 (2200 uf/25v) positive lead on the main circuit board and an insulated jumper wire attached from that lead to the junction of D109/110. Additionally another insulated jumper will need to replace the trace that was cut. (see drawing)

3)Add C907 & 908, 1uf/50v , H/K/ # 3479310971, one on each output pin to ground on regulators IC108 and IC111. This is most easily accomplished by:

Soldering one 1uf cap to the jumpers 153 & 197. Observe polarity; J153 is ground. Soldering one 1uf cap to the jumpers 185 & 186. Observe polarity; J186 is ground.

Model	Serial number	Serial number	Action	Correction
	120V	230V
FL8300	IN0019-72213	NOT REQUIRED	R701 is damaged or	Replace R701,
	and below		an open circuit	re-route positive connection
				on C125,
				Add C907/908

FL8300	IN0019-72214	NOT REQUIRED	Modified by factory	NONE REQUIRED
	and above

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

FL8300 specifications

The Harman-Kardon FL8300 is a sophisticated, high-performance audio component that exemplifies the integration of advanced technology and premium audio engineering. Designed for audiophiles and music enthusiasts, this device offers an array of features that elevate the listening experience.

One of the standout characteristics of the FL8300 is its aesthetic design, which combines elegance and functionality. The device is housed in a sleek, modern casing that not only looks great but also maximizes sound quality. Its minimalist style enables it to blend seamlessly into any home entertainment setup while showcasing Harman-Kardon’s commitment to quality and design.

At the heart of the FL8300 is its advanced digital signal processing technology, which ensures optimal sound reproduction across various media formats. This technology allows for precise adjustments to sound output, balancing treble, midrange, and bass frequencies for an immersive listening experience. The result is vibrant sound that brings music and movies to life, regardless of the genre or source.

Additionally, the FL8300 supports a range of input options, making it incredibly versatile and compatible with various devices. It features multiple analog and digital inputs, including USB, optical, and coaxial connections, enabling users to connect their favorite audio sources effortlessly. This flexibility is crucial for today’s multimedia environments, where users often switch between devices.

Moreover, the Harman-Kardon FL8300 incorporates high-quality components such as audiophile-grade capacitors and amplifiers, which contribute to its rich and dynamic sound performance. With an emphasis on clarity and detail, this audio component ensures that every note is reproduced with accuracy and depth.

The FL8300 also offers user-friendly controls and customizable settings for a tailored audio experience. Its intuitive interface allows users to adjust settings easily, such as equalization and volume levels, ensuring that each listener can create their ideal sound environment.

In conclusion, the Harman-Kardon FL8300 stands out as a premium audio component that combines cutting-edge technology, elegant design, and versatile functionality. With its superior sound quality, multiple input options, and user-friendly features, it is a reliable choice for those seeking an exceptional auditory experience. Whether for casual listening or high-fidelity audio enjoyment, the FL8300 promises to enhance any home entertainment system.

harman/kardon