DOWNLOAD Harman Kardon AVR 645 Service Manual ↓ Size: 18.07 MB | Pages: 117 in PDF or view online for FREE

Model
AVR 645
Pages
117
Size
18.07 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
avr-645.pdf
Date

Harman Kardon AVR 645 Service Manual ▷ View online

 
harman/kardon
   
 
 AVR645 
A/V DOLBY DIGITAL RECEIVER 
 
SERVICE MANUAL 
 
 
 
CONTENTS 
 
ESD WARNING……………………
....………..2 
LEAKAGE TESTING…………
....…..…..…....3 
BASIC SPECIFICATIONS…………
.….……..4 
TROUBLESHOOTING GUIDE……........…...5
PROCESSOR RESET….…………............…5 
PACKAGING……..….…............................…6
PACKING PARTS LIST…..…........................7 
UNIT EXPLODED VIEW..................….….….8
EXPLODED VIEW PARTS LIST..….….….…9
ELECTRICAL PARTS LIST.........................12                                        
SEMICOMDUCTOR PINOUTS.….....…......36   
 
PCB DRAWINGS...........……………...…...86
SERVICE PROCEDURE……………..……98 
BLOCK DIAGRAM.......................…..…...101 
CIRCUIT DESCRIPTION…………….......102
WIRING DIAGRAM…..................…….....103
SCHEMATIC DIAGRAMS…..…......….....104 
 
 
 
 
harman/kardon, Inc. 
       250 Crossways Park Dr. 
   Woodbury, New York   11797   
 
 
Rev
1 – 05/2007 
Page 1 of 117
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 :
 
 
 
 
AVR645 
 
 
 
 
 
 
 
 
 
 
 
harman/kardon
  
Page 2 of 117
SAFETY PRECAUTIONS
The following check should be performed for the continued
protection of the customer and service technician.
LEAKAGE CURRENT CHECK
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.
ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A
POTENTIAL SHOCK HAZARD AND MUST BE
CORRECTED BEFORE RETURNING THE APPLIANCE
TO THE CUSTOMER.
Device
under
test
Test all
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
AC Leakage Test
Leakage
current
tester
Reading should
not be above
0.5mA
Earth
ground
 
 
 
 
AVR645 
 
 
 
 
 
 
 
 
 
 
 
harman/kardon
  
Page 3 of 117
TECHNICAL SPECIFICATIONS
67
ENGLISH
Technical Specifications
Audio Section
Stereo Mode 
Continuous Average Power (FTC)
90 Watts per channel, 20Hz–20kHz,
@ < 0.07% THD, both channels driven into 8 ohms
5/7 Channel Surround Modes 
Power Per Individual Channel
Front L&R channels:
75 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms
Center channel:
75 Watts, @ < 0.07% THD, 20Hz–20kHz into 8 ohms
Surround (L & R Side, L & R Back) channels:
75 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–130kHz
High Instantaneous 
Current Capability (HCC)
±50 Amps
Transient Intermodulation 
Distortion (TIM)
Unmeasurable
Rise Time
16 µsec
Slew Rate
40V/µsec**
FM Tuner Section
Frequency Range
87.5–108MHz
Usable Sensitivity
IHF 1.3 µV/13.2dBf
Signal-to-Noise Ratio
Mono/Stereo: 70/68dB (DIN)
Distortion
Mono/Stereo: 0.15/0.2%
Stereo Separation
40dB @ 1kHz
Selectivity
±400kHz: 70dB
Image Rejection
80dB
IF Rejection
90dB
AM Tuner Section
Frequency Range
520–1710kHz
Signal-to-Noise Ratio
45dB
Usable Sensitivity
Loop: 500µV
Distortion
1kHz, 50% Mod: 0.8%
Selectivity
±10kHz: 30dB
Video Section
Video Format
PAL/NTSC
Input Level/Impedance
1Vp-p/75 ohms
Output Level/Impedance
1Vp-p/75 ohms
Video Frequency Response
(Composite and S-Video)
10Hz–8MHz (–3dB)
Video Frequency 
Response (Component)
10Hz-50MHz (-3dB)
HDMI Version 1.1
General
Power Requirement
AC 220-240V/50Hz
Power Consumption
120W idle, 1180W maximum 
(7 channels driven) 
Dimensions (Max)
Width
440mm 
Height
165mm 
Depth
435mm 
Weight
19.9 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 and Power for the Digital Revolution are registered trademarks of 
Harman International Industries, Incorporated.
and 
are trademarks of Harman International Industries, Incorporated.
(Patent No. 5,386,478).
*Manufactured under license from Dolby Laboratories.
“Dolby,” “Pro Logic,” “Pro Logic II,” "Pro Logix IIx" and the Double-D symbol are trademarks of
Dolby Laboratories. Confidential Unpublished Works. ©1992–1999 Dolby Laboratories, Inc.
All rights reserved.
DTS and DTS Surround, DTS-ES and DTS Neo:6 are trademarks of Digital Theater Systems, Inc.
Logic 7 is a registered trademark of Harman International Industries, Incorporated.
A-BUS and A-BUS/
READY
®
Ready are registered trademarks of Leisure Tech Electronics Pty Ltd
Australia.
TiVo is a registered trademark of TiVo, Inc.
SACD is a trademark of Sony Corporation.
iPod is a registered trademark of Apple Computer, Inc.
DLP and Texas Instruments are trademarks of Texas Instruments.
HD-DVD is a trademark of the DVD Format/Logo Licensing Corporation (DVD FLLC).
HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered
trademarks of HDMI Licensing, LLC.
Microsoft, Windows and Windows Media are registered trademarks of Microsoft Corporation in
the United States and other countries.
**Without input anti slewing and output isolation networks.
 The 
 Bridge 
TM
29851_AVR645_ENG  30/10/06  9:46  Side 67
Page 4 of 117
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Harman Kardon AVR 645 Service Manual ▷ Download

  • DOWNLOAD Harman Kardon AVR 645 Service Manual ↓ Size: 18.07 MB | Pages: 117 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Harman Kardon AVR 645 in PDF for free, which will help you to disassemble, recover, fix and repair Harman Kardon AVR 645 Audio. Information contained in Harman Kardon AVR 645 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.