Read Harman Kardon AVR 145 (serv.man3) Service Manual online
harman/kardon
AVR145
5 X 40W 5.1 CHANNEL A/V RECEIVER
SERVICE MANUAL
CONTENTS
ESD WARNING........................
2
ELECTRICAL PARTS LIST....
12
LEAKAGE TESTING..................
3
SEMICONDUCTOR PINOUTS
48
BASIC SPECIFICATIONS..........
4
PCB DRAWINGS..................
119
TROUBLESHOOTING GUIDE.....
5
BLOCK DIAGRAM.................
126
PROCESSOR RESET...............
5
WIRING DIAGRAM................
127
PACKAGE LIST AND PARTS.......
6
AMP BIAS ADJUSTMENT
128
DISASSEMBLY
7
SCHEMATIC DIAGRAMS.......
129
UNIT EXPLODED VIEW AND PARTS
11
Released 2007
Discontinued XXXX
Discontinued XXXX
Rev 0, 10/2007
harman/kardon, Inc.
250 Crossways Park Dr.
Woodbury, New York, 11797
harman/kardon
AVR 145/230 service manual
Page 1 of 135
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 :
AVR145
harman/kardon
harman/kardon
AVR 145/230 service manual
Page 2 of 135
2
ELECTROSTATICALLY SENSITIVE DEVICES
SAFETY PRECAUTIONS
The following check should be performed for the continued
protection of the customer and service technician.
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.
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.
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
exposed metal
surfaces
Also test with
plug reversed
(Using AC adapter
plug as required)
plug reversed
(Using AC adapter
plug as required)
AC Leakage Test
Leakage
current
tester
current
tester
Reading should
not be above
0.5mA
not be above
0.5mA
Earth
ground
ground
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AVR 145/230 service manual
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Technical Specifications AVR145/230
Audio Section
Stereo Mode
Continuous Average Power (FTC)
Stereo Mode
Continuous Average Power (FTC)
50 Watts per channel, 20Hz–20kHz,
@ < 0.07% THD, both channels driven into 8 ohms
@ < 0.07% THD, both channels driven into 8 ohms
5 Channel Surround Modes
Power Per Individual Channel
Power Per Individual Channel
Front L&R channels:
40 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms
40 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms
Center channel:
40 Watts, @ < 0.07% THD, 20Hz–20kHz into 8 ohms
40 Watts, @ < 0.07% THD, 20Hz–20kHz into 8 ohms
Surround channels:
40 Watts per channel,
@ < 0.07% THD, 20Hz–20kHz into 8 ohms
40 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)
100dB
Surround System Adjacent Channel Separation
Analog Decoding
40dB
(Pro Logic, etc.)
Dolby Digital (AC-3)
Dolby Digital (AC-3)
55dB
DTS
55dB
Frequency Response
@ 1W (+0dB, –3dB)
10Hz–130kHz
High Instantaneous
Current Capability (HCC)
Current Capability (HCC)
±25 Amps
Transient Intermodulation
Distortion (TIM)
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: 0.2/0.3%
Stereo Separation
40dB @ 1kHz
Selectivity
±400kHz: 70dB
Image Rejection
80dB
IF Rejection
90dB
AM Tuner Section
Frequency Range
522–1620kHz
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)
(Composite and S-Video)
10Hz–8MHz (-3dB)
Video Frequency
Response (Component)
Response (Component)
10Hz–100MHz (-3dB)
General
Power Requirement
AC 220–240V/50Hz
Power Consumption
65W idle, 540W maximum
(5 channels driven)
(5 channels driven)
Dimensions (Max)
Width
440mm
Height
165mm
Depth
382mm
Weight
9.7 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.
Height measurement includes feet and chassis.
All features and specifications are subject to change without notice.
Harman Kardon, The Bridge
and Logic 7 are
registered trademarks of Harman International Industries, Incorporated.
is a trademark of Harman International Industries, Inc.
*Manufactured under license from Dolby Laboratories.
“Dolby,” “Pro Logic” and the Double-D symbol are trademarks of Dolby Laboratories.
“Dolby,” “Pro Logic” and the Double-D symbol are trademarks of Dolby Laboratories.
"DTS" and "DTS Neo:6" are registered trademarks of DTS,
Inc. "96/24" is a trademark of DTS, Inc.
Inc. "96/24" is a trademark of DTS, Inc.
SA-CD is a trademark of Sony Electronics, Inc.
Apple and iPod are registered trademarks of Apple Computer, Inc.
Cirrus is a registered trademark of Cirrus Logic Corp.
**Without input anti slewing and output isolation networks.
TM
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AVR 145/230 service manual
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