DOWNLOAD Harman Kardon AVR 137 Service Manual ↓ Size: 17.82 MB | Pages: 87 in PDF or view online for FREE

 

                 Service Manual 

 

 

 

 

 

 

 

 

 

 

 

  SCHEMATIC 

 

 

 

 

 

 

 

 

Released 

EU2008 

   harman/kardon, 

Inc. 

  Rev 

0, 

04/2008 

 

 

 

 

 

       250 Crossways Park Dr. 

      

 

 

Woodbury, 

New 

York, 

11797 

Page 1 of 87

Each precaution in this manual should be followed during servicing.

Components identified with the IEC symbol

in the parts list are special significance to safety. When replacing a component identified with

, use only the replacement parts designated, or parts with the same ratings or resistance, wattage, or voltage that are designated in the

parts list in this manual. Leakage-current or resistance measurements must be made to determine that exposed parts are acceptably

insulated from the supply circuit before retuming the product to the customer.

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called

Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and

semiconductor "chip" components.

The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on

your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device,

which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to

prevent electrostatic charge build-up or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges

sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical change sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement

ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.)

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the

chassis or circuit assembly into which the device will be installed.

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together

or your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES devices.

CAUTION :

harman/kardon

AVR137/230 Service Manual

Page 2 of 87

The following check should be performed for the continued
protection of the customer and service technician.

Measure leakage current to a known earth ground (water
pipe, conduit, etc.) by connecting a leakage current tester
between the earth ground and all exposed metal parts of the
appliance (input/output terminals, screwheads, metal
overlays, control shaft, etc.). Plug the AC line cord of the
appliance directly into a 120V AC 60Hz outlet and turn the
AC power switch on. Any current measured must not exceed
o.5mA.

Device

under

test

Test all
exposed metal
surfaces

Also test with
plug reversed
(Using AC adapter
plug as required)

Leakage
current
tester

Reading should
not be above
0.5mA

Earth
ground

harman/kardon

AVR137/230 Service Manual

Page 3 of 87

TECHNICAL SPECIFICATIONS 35

Stereo Mode 
Continuous Average Power (FTC)

40 Watts per channel, 20Hz–20kHz,
@ < 0.07% THD, both channels driven into 8 ohms

Five-Channel Surround Modes 
Power Per Individual Channel

Front L&R channels:
30 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms

Center channel:
30 Watts, @ < 0.07% THD, 20Hz–20kHz into 8 ohms

Surround channels:
30 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms

Input Sensitivity/Impedance 

Linear (High Level)

200mV/47kohms

Signal-to-Noise Ratio (IHF-A)

95dB

Surround System Adjacent Channel Separation 

Analog Decoding 

40dB 

(Pro Logic, etc.) 
Dolby Digital (AC-3)

55dB 

DTS

55dB

Frequency Response 

@ 1W (+0dB, –3dB)

10Hz–100kHz

High Instantaneous 
Current Capability (HCC)

±25 Amps

Transient Intermodulation 
Distortion (TIM)

Unmeasurable

Rise Time

16 µsec

Slew Rate

40V/µsec

Frequency Range

87.5–108MHz

Usable Sensitivity

IHF 1.3 µV/13.2dBf

Signal-to-Noise Ratio

Mono/Stereo: 70/65dB (DIN)

Distortion

Mono/Stereo: 0.15/0.3%

Stereo Separation

35dB @ 1kHz

Selectivity

±400kHz: 70dB

Image Rejection

80dB

IF Rejection

90dB

Frequency Range

522–1620kHz

Signal-to-Noise Ratio

45dB

Usable Sensitivity

Loop: 500µV

Distortion

1kHz, 50% Mod: 0.8%

Selectivity

±10kHz: 30dB

Video Format

PAL/NTSC

Input Level/Impedance

1Vp-p/75 ohms

Output Level/Impedance 1Vp-p/75 ohms
Video Frequency 
Response

10Hz–8MHz (–3dB)

Power Requirement

AC 220-240V/50Hz

Power Consumption

72W idle, 580W maximum 
(2 channels driven)

Dimensions (Max)

Width

440mm 

Height

165mm 

Depth

382mm

Weight

9.6 kg

Depth measurement includes knobs, buttons and terminal connections.
Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.

Harman Kardon is a registered trademark.

*Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the Double-D symbol are 
trademarks of Dolby Laboratories, Inc.
Confidential Unpublished Works. ©1992–1999 Dolby Laboratories, Inc.
All rights reserved.

†"DTS" and "DTS Neo:6" are registered trademarks of DTS, Inc. "96/24" 
is a trademark of DTS, Inc.

Logic 7 is a registered trademark of Lexicon, Inc.

32995_AVR137_ENG  16/05/07  12:29  Side 35

harman/kardon

AVR137/230 Service Manual

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