AVR 135 (serv.man3) - Harman Kardon Audio Service Manual (repair manual)

Model
AVR 135 (serv.man3)
Pages
110
Size
11.85 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
avr-135-sm3.pdf
Date

View Harman Kardon AVR 135 (serv.man3) Service Manual online

AVR135
AVR135BK
AUDIO/VIDEO RECEIVER
SERVICE MANUAL
        230V international version 
Power for the Digital Revolution
.
®
®
Audio Section
Stereo Mode 
Continuous Average Power (FTC)
50 Watts per channel, 20Hz–20kHz,
@ <0.07% THD, both channels driven into 8 ohms
Six-Channel Surround Modes 
Power per Individual Channel
Front L&R channels:
40 Watts per channel
@ <0.07% THD, 20Hz–20kHz into 8 ohms
Center channel:
40 Watts @ <0.07% THD, 20Hz–20kHz into 8 ohms
Surround (L & R Side, Back) channels:
40 Watts per channel
@ <0.07% THD, 20Hz–20kHz into 8 ohms
Input Sensitivity/Impedance
Linear (High-Level)
200mV/47k ohms
Signal-to-Noise Ratio (IHF-A)
100dB
Surround System Adjacent Channel Separation
Pro Logic I/II 
40dB
Dolby Digital (AC-3)
55dB
DTS
55dB
Frequency Response 
@ 1W (+0dB, –3dB)
10Hz – 130kHz
High Instantaneous 
Current Capability (HCC)
±25 Amps
Transient Intermodulation 
Distortion (TIM)
Unmeasurable
Slew Rate
40V/μsec
FM Tuner Section
Frequency Range
87.5 –108.0MHz
Usable Sensitivity
IHF 1.3μV/13.2dBf
Signal-to-Noise Ratio
Mono/Stereo 70/68dB
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
520–1720 kHz
Signal-to-Noise Ratio
45dB
Usable Sensitivity
Loop 500 μV
Distortion
1kHz, 50% Mod 0.8%
Selectivity
±10kHz, 30dB
Video Section
Television Format
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 Video)      
10Hz–50MHz (–3dB)
General
Power Requirement
AC 120V/60Hz
Power Consumption
65W idle, 540W maximum 
(6 channels driven)
Dimensions (Product)
(Shipping)
Width
17.3 inches (440mm)
21.5 inches (545mm) 
Height
6.6 inches (168mm)
9.9 inches (251mm) 
Depth
15 inches (382mm)
17.9 inches (455mm) 
(Product)
(Shipping)
Weight 
24.4 lb (11.1kg)
29.3 lb (13.3kg)
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.
* Manufactured under license from Dolby Laboratories. “Dolby,” “Pro Logic” and the Double-D symbol 
are trademarks of Dolby Laboratories.
DTS, DTS Surround, DTS-ES and DTS Neo:6 are registered trademarks of Digital Theater Systems, Inc.
VMAx is a registered trademark of Harman International Industries, Incorporated, and is an 
implementation of Cooper Bauck Transaural Stereo under patent license.
Logic 7 is a registered trademark of Harman International Industries, Incorporated.
Cirrus is a registered trademark of Cirrus Logic, Inc.
46  
TECHNICAL SPECIFICATIONS
AVR 135 TECHNICAL SPECIFICATIONS
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 250V AC 50Hz 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
OPERATION
24
  OPERATION
Surround Mode Chart
MODE
FEATURES
Dolby Digital
Available only with digital input sources encoded with Dolby Digital data. It provides up to five separate main audio channels and 
a special dedicated Low-Frequency Effects channel.
Dolby Digital EX
Available when the receiver is configured for 6.1/7.1-channel operation, Dolby Digital EX is the latest version of Dolby Digital. When used with 
movies or other programs that have special encoding, Dolby Digital EX reproduces specially encoded soundtracks so that a full 6.1/7.1 sound field is 
available. When the receiver is set for 6.1/7.1 operation and a Dolby Digital signal is present, the EX mode is automatically selected. Even if specific 
EX encoding is not available to provide the additional channel, the special algorithms will derive a 6.1/7.1 output.
DTS 5.1
When the speaker configuration is set for 5.1-channel operation, the DTS 5.1 mode is available when DVD, audio-only music or laser discs encoded 
with DTS data are played. DTS 5.1 provides up to five separate main audio channels and a special dedicated low-frequency channel.
DTS-ES 6.1 Matrix
When the speaker configuration is set for 6.1/7.1 operation, playback of a DTS-encoded program source will automatically trigger the selection 
DTS-ES 6.1 Discrete
of one of the two DTS-ES modes. Newer discs with special DTS-ES discrete encoding will be decoded to provide six discrete, full-bandwidth 
channels plus a separate low-frequency channel. All other DTS discs will be decoded using the DTS-ES Matrix mode, which creates a 6.1-channel 
sound field from the original 5.1-channel soundtrack.
Dolby Pro Logic II
Dolby Pro Logic II is the latest version of Dolby Laboratory’s benchmark surround technology that decodes full-range, discrete left, center right,
Movie
right surround and left surround channels from either matrix surround-encoded programs and conventional stereo sources when an analog input 
Music
is in use. The Dolby Pro Logic II Movie mode is optimized for movie soundtracks, while the Pro Logic II Music mode should be used with 
Pro Logic
musical selections. The Pro Logic mode activates original Pro Logic processing for those who prefer that presentation.
Logic 7 Cinema
Exclusive to Harman Kardon for A/V receivers, Logic 7 is an advanced mode that extracts the maximum surround information from either 
Logic 7 Music
surround-encoded programs or conventional stereo material. Depending on the number of speakers in use and the selection made in the 
Logic 7 Enhance
SURROUND SELECT menu, the “5.1” versions of Logic 7 modes are available when the 5.1 option is chosen, while the “7.1” versions of 
Logic 7 produce a full sound field presentation, including back surround speakers when the “6.1/7.1” option is chosen. The Logic 7 C (or Cinema) 
mode should be used with any source that contains Dolby Surround or similar matrix encoding. Logic 7 C delivers increased center-channel 
intelligibility, and more accurate placement of sounds with fades and pans that are much smoother and more realistic than with other decoding 
techniques. The Logic 7 M or Music mode should be used with analog or PCM stereo sources. Logic 7 M enhances the listening experience by 
presenting a wider front soundstage and greater rear ambience. Both Logic 7 modes also direct low-frequency information to the subwoofer 
(if installed and configured) to deliver maximum bass impact. The Logic 7 E (or Enhance) mode, available only when the 5.1 option is chosen,
is an extension of the Logic 7 mode that is primarily used with musical programs. Logic 7 adds additional bass enhancement that circulates low 
frequencies in the 40Hz to 120Hz range to the front and surround speakers to deliver a less localized soundstage that appears broader and wider 
than when the subwoofer is the sole source of bass energy.
DTS Neo:6 Cinema
These two modes are available when any analog source is playing to create a six-channel surround presentation from conventional Matrix-encoded 
DTS Neo:6 Music
and traditional Stereo sources. Select the Cinema version of Neo:6 when a program with any type of analog Matrix surround encoding is present.
Select the Music version of Neo:6 for optimal processing when a nonencoded, two-channel stereo program is being played.
Dolby 3 Stereo
Uses the information contained in a surround-encoded or two-channel stereo program to create center-channel information. In addition, the 
information that is normally sent to the rear-channel surround speakers is carefully mixed in with the front-left and front-right channels for increased 
realism. Use this mode when you have a center channel speaker but no surround speakers.
Theater
The Theater mode creates a sound field that resembles the acoustic feeling of a standard live-performance theater.
Hall 1, Hall 2
The two Hall modes create sound fields that resemble a small (Hall 1) and medium-sized (Hall 2) concert hall.
VMAx Near
When only the two front-channel loudspeakers are used, Harman’s patented VMAx mode delivers a three-dimensional sound space with the illusion 
VMAx Far
of “phantom speakers” at the center and surround positions. The VMAx N, or “Near Field,” mode should be selected when your listening position is 
less than five feet from the speakers. The VMAx F, or “Far Field,” mode should be selected when your listening position is greater than five feet from 
the speakers. The VMAx modes are also available using the Headphones Output
4. When headphones are being used, the Far Field mode will 
appear to push the sound field away from your ears, reducing the “inside the head” sensation often experienced when using headphones.
5-Channel Stereo
This mode takes advantage of multiple speakers to place a stereo signal at both the front and back of a room. Depending on whether the AVR
7-Channel Stereo
has been configured for either 5.1 or 6.1/7.1 operation, one of these modes, but not both, is available at any time. Ideal for playing music in 
situations such as a party, it places the same signal at the front-left and surround-left, and front-right and surround-right speakers.
The center channel is fed a summed mono mix of the in-phase material of the left and right channels.
Surround
This mode turns off all surround processing and presents the pure left- and right-channel presentation of two-channel stereo programs.
Off (Stereo)
TROUBLESHOOTING GUIDE  
45
TROUBLESHOOTING GUIDE
SYMPTOM
CAUSE
SOLUTION
Unit does not function when Main
• No AC Power
• Make certain AC power cord is plugged into 
Power Switch is pushed
a live outlet
• Check to see whether outlet is switch-controlled
Display lights, but no sound
• Intermittent input connections
• Make certain that all input and speaker connections 
or picture
are secure
• Mute is on
• Press Mute Button
• Volume control is down
• Turn up volume control
Unit turns on, but front panel 
• Display brightness is turned off
• Follow the instructions in the Display Brightness section 
display does not light up
on page 28 so that the display is set to 
VFD FULL
No sound from any speaker;
• Amplifier is in protection mode 
• Check speaker wire connections for shorts at receiver and 
light around power switch is red
due to possible short
speaker ends 
• Amplifier is in protection mode 
• Contact your local Harman Kardon service center
due to internal problems
No sound from surround or
• Incorrect surround mode
• Select a mode other than Stereo
center speakers
• Input is monaural
• There is no surround information from mono sources
• Incorrect configuration 
• Check speaker mode configuration                                       
• Stereo or Mono program material
• The surround decoder may not create center- or rear-channel 
information from nonencoded programs
Unit does not respond to
• Weak batteries in remote
• Change remote batteries
remote commands
• Wrong device selected
• Press the AVR selector
• Remote sensor is obscured
• Make certain front panel sensor is visible to remote
or connect remote sensor
Intermittent buzzing in tuner
• Local interference
• Move unit or antenna away from computers, fluorescent 
lights, motors or other electrical appliances
Letters flash in the channel indicator
• Digital audio feed paused
• Resume play for DVD
display and digital audio stops
• Check that Digital Input is selected
In addition to the items shown above, additional information on troubleshooting possible problems with your AVR 135, or installation-related issues, may be found in the list of
"Frequently Asked Questions" which is located in the Product Support section of our Web site at www.harmankardon.com.
41
Processor Reset
In the rare case where the unit’s operation or the dis-
plays seem abnormal, the cause may involve the erratic
operation of the system’s memory or microprocessor.
To correct this problem, first unplug the unit from the
AC wall outlet and wait at least three minutes. After the
pause, reconnect the AC power cord and check the
unit’s operation. If the system still malfunctions, a sys-
tem reset may clear the problem.
To clear the AVR 135’s entire system memory includ-
ing tuner presets, output level settings, delay times and
speaker configuration data, press and hold the Tone
Mode Button
5 button for three seconds. The unit
will turn on automatically.
NOTE: Resetting the processor will erase any configu-
ration settings you have made for speakers, output
levels, surround modes, digital input assignments as
well as the tuner presets. The unit will be returned to
the factory presets, and all settings for these items
must be reentered.
If the system is still operating incorrectly, there may
have been an electronic discharge or severe AC line
interference that has corrupted the memory or
microprocessor.
If these steps do not solve the problem, consult an
authorized Harman Kardon service center.
AMPLIFIER SECTION BIAS ADJUSTMENT
CUP11651Y (BIAS PCB)
Measurement condition
. No input signal or volume position is minimum.
Standard value.
. Ideal current = 48mA ( 
±
 5%)
. Ideal DC Voltage = 25.92mV ( 
±
 5%)
DC VOLTMETER..............Connect to CN81,CN82,CN83,CN84,CN85,CN86,CN87
NO.
Channel
Adjust for
Adjustment
1
Front Left
25.92mV (±5%)
VR83
CN82
VR86
2
Front Right
25.92mV (±5%)
25.92mV (±5%)
25.92mV (±5%)
25.92mV (±5%)
VR84
CN86
VR82
3
Center
VR85
4
Surround Left
VR86
CN81
VR87
5
Surround Right
VR87
VR81
CN87
6
7
Surround Back Left
Surround Back Right
25.92mV (±5%)
25.92mV (±5%)
VR82
VR81(235&335 ONLY)
......
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Download Harman Kardon AVR 135 (serv.man3) Service Manual (Repair Manual)

Here you can view online and download Harman Kardon AVR 135 (serv.man3) Service Manual in PDF. AVR 135 (serv.man3) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Harman Kardon AVR 135 (serv.man3) Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.