Harman Kardon AVR85RDS, AVR75RDS Techical Manual

AVR75/85

Dolby Digital Audio/Video Receiver

TECHNICAL MANUAL

Harman Consumer Group 250 Crossways Park Drive Woodbury, N.Y. 11797 1-800 422-8026 in the USA

A Harman International Company

Rev A 12/99

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

TABLE OF CONTENTS

ELECTROSTATICALLY SENSITIVE (ES) DEVISES ....4

LEAKAGE TEST ............................................................4

AVR75 & AVR85 FRONT PANEL CONTROLS.............5

AVR75 & AVR85 FRONT PANEL DISPLAY

INFORMATION ..........................................................7

AVR75 & AVR85 REMOTE CONTROL INFO ...............9

AVR75 & AVR85 REAR PANEL CONNECTIONS .......12

Service Bulletin #9705 for AVR85 .................................14

SERVICE AND ADJUSTMENT .....................................16

ALIGNMENT AND TEST POINTS.................................20

AVR75/85 BLOCK DIAGRAM........................................22

SPECIFICATIONS..........................................................23

AVR75 MECHANICAL EXPLODED VIEW

(120V AND 230V).....................................................32

AVR75 MECHANICAL PARTS LIST (120V & 230V) ...33

AVR85 MECHANICAL EXPLODED VIEW

(120V AND 230V).....................................................35

AVR85 MECHANICAL PARTS LIST (120V & 230V) ...36

AVR75/85 ELECTRICAL PARTS LISTS .......................38

GENERAL MISCELLANEOUS .................................38

PCB - PB04, Standby...............................................38

PCB - PC04, AC-3 Crossover ..................................38

PCB - PW04, Headphone ........................................39

PCB PU04, Front......................................................39

PCB - PL94, Aux In ..................................................40

PCB -PU54, Master Volume ....................................40

PCB - P724 ............................................................40

PCB - P734 ............................................................41

PCB - P744 ...........................................................41

PCB - P714, Voltage Amp .......................................41

PCB - PP04, Surround Amp ....................................42

PCB - PN54, Speaker Protect..................................42

PCB - P604 AC-3/DAC ............................................43

PCB - PU94, Power Switch......................................44

PCB - P704, Main.....................................................44

PCB - PS04, Audio Funtion .....................................46

PCB - P754, Speaker Terminal................................46

PCB - PS54, Audio Video ........................................46

PCB - PY04, Connect ..............................................47

PCB - PF04, Tone Control .......................................48

PCB - P104, Tuner ...................................................48

PCB - P104 Tuner (230v) Discrepency List ............49

PCB - PE04, Electronic Volume Control..................50

PCB - PL54, S-Video ...............................................51

PCB - PL04, Video Selector.....................................51

AVR78 & AVR85 PACKING EXPLODED VIEW...........52

VOLTAGE AMP PCB - P714.........................................53

AC3/DAC PCB - P604 ...................................................54

MAIN PCB -P704 ...........................................................55

AUDIO FUNCTION PCB - PS04, AUDIO/VIDEO PCB - PS54, ELECTRONIC VOLUME CONTROL PCB - PE04,

AC-3 CROSSOVER PCB - PC04..................................56

SPEAKER TERMINAL PCB - P754, VIDEO SELECTOR PCB - PL04,

CONNECT PCB - PY04.................................................57

S-VIDEO PCB - PL54, 120V TUNER PCB - P104, 120V STANDBY PCB - PB04, 120V

SURROUND AMP PCB - PP04, 120V..........................58

S-VIDEO PCB - PL54, 230V TUNER PCB - P104, 230V STANDBY PCB - PB04, 230

SURROUND AMP PCB - PP04, 230V..........................59

FRONT PCB - PU04, S-VIDEO PCB - PL54, AVR85 ONLY MASTER VOLUME PCB - PU54, SPEAKER PROTECT PCB - PN54, TONE CONTROL PCB - PF04, AUX IN PCB - PL94, POWER SWITCH PCB - PU94,

HEADPHONE PCB - PW04...........................................60

INTEGRATED CIRCUIT DIAGRAMS ........................61-71

AVR75/85 WIRING DIAGRAM (120V & 230V).............72

AVR75 (120V) SCHEMATIC DIAGRAM 1 of 8 (FRONT PCB PU04, MASTER VOLUME PCB PU54,

AUX IN PL94) ................................................................73

AVR75 (120V) SCHEMATIC DIAGRAM 2 of 8

(TUNER PCB P104) ......................................................74

AVR75 (120V) SCHEMATIC DIAGRAM 3 of 8 (AUDIO SELECTOR PCB PS04,

AUDIO/VIDEO PCB PS54) ............................................75

AVR75 (120V) SCHEMATIC DIAGRAM 4 of 8 (AC-3 CROSSOVER PCB PC04, TONE CONTROL PCB PF04, VIDEO SELECTOR PCB PL04,

S-VIDEO PCB PL54) .....................................................76

AVR75 (120V) SCHEMATIC DIAGRAM 5 of 8

(CONNECT PCB PY04).................................................77

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

AVR75 (120V) SCHEMATIC DIAGRAM 6 of 8 (VOLTAGE AMP PCB - P714, MAIN PCB - P704, SURROUND AMP PCB - PP04, SPEAKER TERMINAL PCB - P754, HEADPHONE PCB - PW04, SPEAKER PROTECT PCB - PN54, STANDBY PCB - PB04,

POWER SWITCH PCB - PU94) ....................................78

AVR75 (120V) SCHEMATIC DIAGRAM 7 of 8

(ELECTRONIC VOLUME PCB - PE04) ........................79

AVR75 (120V/230V) SCHEMATIC DIAGRAM 8 of 8

(AC-3/DSP PCB - P604)................................................80

AVR75 (230V) SCHEMATIC DIAGRAM 1 of 7 (FRONT PCB - PU04, MASTER VOLUME PCB - PU54,

AUX IN - PL94) .............................................................81

AVR75 (230V) SCHEMATIC DIAGRAM 2 of 7

(TUNER PCB - P104) ....................................................82

AVR75 (230V) SCHEMATIC DIAGRAM 3 of 7 (AUDIO SELECTOR PCB - PS04,

AUDIO/VIDEO PCB - PS54)..........................................83

AVR75 (230V) SCHEMATIC DIAGRAM 4 of 7 (AC-3 CROSSOVER PCB - PC04, TONE CONTROL PCB - PF04, VIDEO SELECTOR PCB - PL04,

S-VIDEO PCB - PL54)...................................................84

AVR75 (230V) SCHEMATIC DIAGRAM 5 of 7

(CONNECT PCB PY04).................................................85

TONE CONTROL PCB - PF04, VIDEO SELECTOR PCB - PL04,

S-VIDEO PCB - PL54)...................................................91

AVR85 (120V) SCHEMATIC DIAGRAM 5 of 8

(CONNECT PCB - PY04) ..............................................92

AVR85 (120V) SCHEMATIC DIAGRAM 6 of 8 (VOLTAGE AMP PCB - P714, MAIN PCB - P704, SURROUND AMP PCB - PP04, SPEAKER TERMINAL - P754,

HEADPHONE PCB - PW04, SPEAKER PROTECT PCB

- PN54, STANDBY PCB - PB04, POWER SWITCH PCB

- PU94) ..........................................................................93

AVR85 (120V) SCHEMATIC DIAGRAM 7 of 8

(ELECTRONIC VOLUME PCB - PE04) ........................94

AVR85 (120V & 230v) SCHEMATIC DIAGRAM 8 of 8

(AVR85 DSP BOARD - P604) .......................................95

AVR85 (230V) SCHEMATIC DIAGRAM 1 of 8 (FRONT PCB - PU04, MASTER VOLUME PCB - PU54, AUX IN -

PL94) ..............................................................................96

AVR85 (230V) SCHEMATIC DIAGRAM 2 of 8

(TUNER PCB - P104) ....................................................97

AVR85 (230V) SCHEMATIC DIAGRAM 3 of 8 (AUDIO SELECTOR PCB - PS04,

AUDIO/VIDEO PCB PS54) ............................................98

AVR85 (230V) SCHEMATIC DIAGRAM 4 of 8 (AC-3 CROSSOVER PCB - PC04, TONE CONTROL PCB - PF04, VIDEO SELECTOR PCB - PL04,

S-VIDEO PCB PL54) .....................................................99

AVR75 (230V) SCHEMATIC DIAGRAM 6 of 7 (VOLTAGE AMP PCB - P714, MAIN PCB - P704, SURROUND AMP PCB - PP04, SPEAKER TERMINAL - P754, HEADPHONE PCB - PW04, SPEAKER PROTECT PCB - PN54, STANDBY PCB - PB04,

POWER SWITCH PCB - PU94) ...................................86

AVR75 (230V) SCHEMATIC DIAGRAM 7 of 7

ELECTRONIC VOLUME CONTROL PCB, PE04 ........87

AVR85 (120V) SCHEMATIC DIAGRAM 1 of 8 (FRONT PCB - PU04, MASTER VOLUME PCB - PU54,

AUX IN - PL94) ..............................................................88

AVR85 (120V) SCHEMATIC DIAGRAM 2 of 8

(TUNER PCB - P104) ....................................................89

AVR85 (120V) SCHEMATIC DIAGRAM 3 of 8 (AUDIO SELECTOR PCB - PS04,

AUDIO/VIDEO PCB - PS54)..........................................90

AVR85 (120V) SCHEMATIC DIAGRAM 4 of 8 (AC-3 CROSSOVER PCB - PC04,

AVR85 (230V) SCHEMATIC DIAGRAM 5 of 8

(CONNECT PCB PY04)................................................100

AVR85 (230V) SCHEMATIC DIAGRAM 6 of 8 (VOLTAGE AMP PCB - P714, MAIN PCB - P704, SURROUND AMP PCB - PP04, SPEAKER TERMINAL - P754, HEADPHONE PCB - PW04, SPEAKER PROTECT PCB - PN54, STANDBY PCB - PB04,

POWER SWITCH PCB - PU94) ...................................101

AVR85 (230V) SCHEMATIC DIAGRAM 7 of 8

(ELECTRONIC VOLUME PCB PE04) ........................102

Harman Kardon Dolby Digital Audio/Video Receiver

ELECTROSTATICALLY SENSITIVE (ES) DEVICES

AVR75/85

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 handing and 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 buildup or exposure of the assembly.

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

LEAKAGE TEST (FOR SERVICE ENGINEERS IN THE U.S.A.)

4. Use only a 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.

CAUTION: 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 device.)

Before returning the unit to the user, preform the following safety checks:

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between parts in the unit.

2. Be sure that any protective devices such as nonmetallic control knobs, insulating fishpapers, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechanical insulators, etc. which were removed for servicing are properly reinstalled.

3. Be sure that no shock hazard exists; check for leakage current using Simpson Model 229 Leakage Tester, standard equipment item No. 21641, RCA Model WT540A or use alternate method as follows: Plug the power cord directly into a 120-volt AC receptacle (do not use an Isolation Transformer for this test). Using two clip leads, connect a

1500 Ohm, 10-watt resistor parallel by a 0.15m F capacitor, in

series with all exposed metal cabinet parts and a known earth ground, such as a water pipe or conduit. Use a VTVM or VOM with 1000 Ohms per volt, or higher sensitivity to measure the AC voltage drop across the resister. (See Diagram.) Move the resistor connection to each exposed metal part having a return path to the chassis (antenna, metal, cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. (This test should be performed with the power switch in both the On and Off positions.)

A reading of 0.35 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before returning the unit to the owner.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75 & AVR85 FRONT PANEL CONTROLS

28 27 26

AVR75/85

harman/kardon

DOLBY

DIGITAL

Power

AM/FMCDCD

Phones

AVR 75

T-1/MON

Night

T-2TVTV

DVDV1V1V2V2

Digital Input

Coax

OPT

VISUAL

TV DVD V1 V2

AC-3 PCM

DIGITAL PRO LOGIC 3 STEREO

STEREO

Mode

HALL

MOVIE RF OPT

MATRIX

OSD

TEST

ATT

COAX NIGHT LFE ATT

MEMO

2 4 6 8 10 12 14 16 18 20 22

135791113

15 17

28 27 26

harman/kardon

AVR 85

MEMO

AUTO

SLEEP P-SCAN DISP

Volume

TUNED

STEREO

kHz MHz

CLR

MODE

P-SET

P-SCN

Treble

Bass

Min

Max

19 21 23

Balance

TUNE

MUTE

VIDEO 3

Video

L - Audio - R

24 25

Volume

VISUAL

TV DVD V1 V2

AC-3 PCM

DIGITAL PRO LOGIC 3 STEREO

STEREO

DOLBY

DIGITAL

Power

AM/FM

2 4 6 8 10 12 14 16 18 20 22

Phones

T-1/MON

T-2

Night

DVD

Digital Input

OPT

Coax

V3 MULTIV3OSD

Mode

2929

135791113

1. Power: Press this button once to turn the unit on and off. Once the unit is turned on, it may be turned off and then on again from the remote, if desired.

NOTE: When the remote is used to turn the unit off the LED surrounding the Power Switch will turn amber, indicating that the AVR75/85 is in a Standby mode. In this condition the unit is NOT disconnected from the AC main power supply.

TEST

MEMO

AUTO

TUNED

STEREO

SLEEP P-SCAN DISP

CLR

MODE

Min

kHz MHz

P-SET

Treble

Bass

Min

Max

19 21 23

P-SCN

Max

Balance

TUNE

MUTE

VIDEO 3

Video

L - Audio - R

24 25

HALL

MOVIE RF OPT

MATRIX

COAX NIGHTMULTI LFE ATT

ATT

MEMO

15 17

2. AM/FM Tuner Selector: Press this button once to select the tuner. Press it again to switch between AM and FM.

3. Headphone Jack: Plug standard stereo headphones into this jack for private listening.

NOTE: When the headphones are in use the output to the speakers is muted and the surround mode is automatically

switched to

STEREO. When the headphones are removed

from the jack, sound to the speakers is restored and the unit returns to the previous sound mode.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

4. CD: Press this button to select the CD player.

5. Tape 1/Monitor: Press this button to select Tape One as

the input source. A red LED above the button will illuminate to indicate that the Tape Monitor has been selected.

6. Night Mode: Press this button to activate the “Night” mode, preventing loud playback when the digital modes are in use.

7. Tape 2: Press this button to select tape 2 input.

8. TV Input: Press this button to select the source connected to the TV Input (38).

9. Digital input Selectors: Press one of these buttons to

select a digital input source. The digital audio source may be the same as, or different from, the analog audio of the selected video source.

10. DVD Input: Press this button to select the source connected to the DVD Input (37). Note that the DVD or LV player’s digital audio output is used, it must be selected separately using the Digital Input Selectors (9).

11. Video Sources: Press any of these buttons to select a video input source.

20. P-Set: Press this button to manually scroll up or down through the FM or AM stations programmed into the receiver’s preset memory.

21. Balance: This knob adjusts the balance between the front left and right speakers.

22. P-Scan: Press this button to automatically scan through the FM or AM stations preset into the receiver’s memory. Press the button again to stop the scan when the tuner is at the desired station.

23. Tune: Press this button to manually scan up or down through the FM or AM bands.

24. Video 3 Input: Audio or Video sources connected to these jacks may be selected by pressing the Video Source button (11).

25. Mute: Press this button to cut the output to the speakers. Press it again to return to the previous volume level.

26. Volume Control: Turn the knob clockwise to increase volume, counterclockwise to decrease the volume. Note that approximately two revolutions of the knob are required to go from no output to maximum volume.

12. Mode: Press these buttons to scroll up or down through the list of available surround modes.

13. OSD (On-Screen Display): Press this button to activate the Attenuation mode which cuts the analog input signal by 50% to compensate for high-level input sources.

14. ATT Attenuation Mode Select: Press this button to activate the Attenuation Mode which cuts the analog input signal by 50% to compensate for high-level input sources.

15. Memo: The memo button is used to enter stations to the tuner’s preset memory in either the manual or automatic modes.

16. Clear: The clear button is used to cancel tuning, memory input or when cleaning the unit’s memories.

17. FM Mode: Press this button to select the tuning mode for FM stations.

18. Bass: This knob adjusts the tone of low-frequency sounds. Turn it to the right to boost bass frequencies or to the left to cut bass frequencies.

19. Treble: This knob adjusts the tone of high-frequency sounds. Turn it to the right to boost high frequencies or to the left to cut high frequencies.

27. Information Display: This display delivers messages and status indications to help you operate the receiver. Refer to the separate diagram for complete explanation of the FL display.

28. Remote Sensor Window: The sensor behind this window receives infrared signals from the remote control. Aim the remote at this area and do not block or cover it unless an external remote sensor is installed.

29. Multiroom Control: NOTE: this feature differentiates the AVR85 from the AVR75. The AVR75 does not have this feature. Press this button to turn the remote room feed

On or Off. The MULTI indicator (D) will light or flash when the remote feed is On. Note that the remote feed will remain On after the main room power is turned Off until it is switched Off by pressing this button again.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75 & AVR85 FRONT PANEL DISPLAY

AVR75/85

AVR75 DISPLAY

VISUAL

AC-3

STEREO

PCM

DIGITAL

PRO LOGIC

DVDV1V1V2V2

3 STEREO

HALL

MOVIERFRF

MATRIX

AVR85 DISPLAY

OPT

TEST

MEMO

COAX

AUTO

SLEEP

PPOONNM

TUNED

NIGHT

STEREO

LFE

P-SCAN

FGGHH

kHz MHz

DISP

ATT

VISUAL

AC-3

STEREO

PCM

DIGITAL

AC-3 Indicator: This indicator illuminates when the

AVR75 is decoding a Dolby Digital input source.

Surround Mode Status: These indicators display the

currently selected surround mode.

Digital Mode Indicators: These indicators show which

digital input is in use.

Multi: This indicator signifies that the AVR85 is sending

a program source to a remote room location. Note that it may be illuminated even when the unit is “off” in the main listening room, signifying that operation continues at

TVTVDVD

PRO LOGIC

3 STEREO

HALL

MOVIE

MATRIX

MEMO

OPT

TEST

COAX

another location. When a remote command is being received via the Multi IR connection (59), this indicator will flash. NOTE: this feature differentiates the AVR85 from

the AVR75. The AVR75 does not have this feature.

Sleep Indicator: This indicator lights when the

AVR75/85 is in the Sleep mode.

Night Indicator: This indicator lights when the

AVR75/85 is in Night mode, which prevents the AVR75/85 from loud playback when digital sources are in use.

AUTO

TUNED

SLEEP

NIGHT

P-SCAN

MULTI LFE

STEREO

kHz MHz

ATT

DISP

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

P-Scan: This indicator flashes when the stations

programmed into the tuner memory are being automatically reviewed.

LFE Indicator: This indicator will illuminate when the

Low-Frequency Effects (LFE) option has been turned on through the controls in

DISP: This indicator lights when the FL display has been

turned off using the Display button (16) to remind you that the unit is still turned on.

ATT Indicator: This indicator lights when the Attenuation

function has been engaged to cut the input from analog sources by approximately 50%.

Main Information Display: This ten-digit display shows

messages relating to the status, input source, surround mode, tuner, volume level or other aspects of unit’s operation.

Stereo: This indicator lights when an FM station is

broadcasting in stereo.

Tuned: This indicator lights when an AM or FM station is

properly tuned and locked.

SETUP MENU 3.

Auto: This indicator signifies that the Automatic Tuning

mode is in use for FM broadcasts.

Memo: This indicator flashes when the Memo button is

pressed when entering presets and other information into the tuner’s memory.

Test: This indicator flashes when the output levels are

being set using the built-in test signal generator.

“Visual” Indicator: These indicators display which input

source is being fed to the video monitor output.

PCM Indicator: This indicator illuminates to show that a

standard PCM (S/P-DIF) digital audio signal is being decoded by the digital-to-analog converter.

Signal Level Indication: This is a visual indication of the

the strength of a radio station signal. The more bars visible, the stronger the station.

Harman Kardon Dolby Digital Audio/Video Receiver

28 2827 27

AVR75/85

AVR75 & AVR85 REMOTE CONTROL

Sending Sending

Use Use

AM/FM AM/FM

TAPE 1 TAPE 1

TAPE 2 TAPE 2

Learn Learn

ON ONOFF OFF

Main Power Main Power

TV TV

DVD DVD

VID 1 VID 1

VID 2 VID 2

VID 3 VID 3

CD CD

ON ONOFF OFF

STEREO STEREOMATRIX MATRIXHALL HALL

NIGHT NIGHT

ABC ABC

DELAY DELAY

JKL JKL

RF RF

STU STUVWX VWXYZ YZ

OPT OPT

MEMO MEMO

COAX COAX

PRESET PRESET

DISC DISC

FM MODE FM MODE

DISPLAY DISPLAY

SELECT SELECT

Learning Learning

SLEEP SLEEP

Source Power Source Power

P/L P/L3ST 3ST

MOVIE MOVIEAC-3 AC-3

26 26

25 25

1 12 23 3

DEF DEFGHI GHI

4 4

7 78 89 9

RDS DISP. RDS DISP.

TEST TONE TESTTONE

6 6

5 5

MNO MNOPQR PQR

# #

0 0

CLEAR CLEARP-SCAN P-SCAN

SKIP SKIP

TUNE/ TUNE/

SEARCH SEARCH

24 24

23 23

22 22

21 21

20 20

MULTI

19 19

/ /

PTY PTY

AF AF

MUTE MUTE

18 18

17 17

16 16

CH SELECT CH SELECT

OSD OSD

10 10

11 11

12 12

OSD OSD

VOLUME VOLUME

SPEAKER SPEAKER

15 15

13 13

AVR 75 AVR 85

14 14

Use/Learn

Source Power

Main Power

Source Selection

Night Mode

Delay

DigitalAudio Input Selectors

Multiroom Control

Menu Controls

Select

OSD

Test Ton e

Channel Select

Speaker LevelAdjust

Main Volume

Display

Mute

Transport Controls

Tune/Search and Fast Forward

Preset/Disc

Channel/Skip

Memo

P-Scan

Number Keys

Surround Mode Selection

Sleep

Learn LED

27 28

Sending LED

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75 & AVR85 REMOTE CONTROL INFORMATION ...continued

AVR75/85

Use/Learn: This switch selects the operation mode of the

remote control. Slide it to the left for normal operation. Slide it to the right when the remote is being programmed.

Source Power: When power on/off commands have

been programmed into the remote’s memory, press these buttons to control power for the last source device selected.

Main Power: Press these buttons to turn the unit on or

off (to Standby Mode).

Source Selection: Pressing one of these buttons selects

the input source that will be listened to through the receiver. When a source is selected the remote’s transport and numeric number buttons will also transmit the commands needed to control that machine.

Night Mode: Press this button to activate the “Night”

mode, preventing loud playback when the digital modes are in use without altering the dynamic range of the output signal.

Delay: Press this button to change the delay for the

surround channels when the Surround Mode Menu is on the screen.

Digital Audio Input Selectors: Press one of these

buttons to select a digital input source. The digital audio source may be the same as, or different analog audio of the selected video source.

Multiroom Control: Press this button to turn the remote

room feed on or off. The Multi indicator will light or flash when the remote feed is on. Note that the remote zone feed will remain on after the main room power is turned off until it is switched off by pressing this button again.

Menu Controls: These buttons control the action of the

cursor or the selection of menu items when the receiver is being configured using the setup menus.

Test Tone: Press this button to begin calibration of the

12.

output level for each channel. A test signal will immediately be heard from the left front speaker and the Test indicator

will flash.

Channel Select: Press this button to view a status

13.

report of the output level for each channel. When the Test Tone is audible and the system output levels are being set, pressing this button will advance the channel being adjusted in a clockwise direction to the next channel.

Speaker Level Adjust: When setting the system output

14.

levels, press these buttons to increase or decrease the output level.

Main Volume: These buttons control the unit’s volume.

15.

Note that all channels are controlled simultaneously.

Display: Press this button to turn off all displays and

16.

indicators in the Information Display except for a small Disp indication in the lower right corner of the display . Press the button again to turn the display back on.

Mute: Press this button to temporarily cut the audio

17.

output of the receiver. Press it again to return to the previous volume level.

Transport Controls: These buttons may be

18.

programmed to control the tape or disc motion of the last playback source selected with the Source Selection buttons . Use them as you would the Play, Stop, Pause, Record, Reverse Play and Forward Play buttons on any VCR, CD, cassette, DVD or LD remote control. The Reverse Play button also operates the FM Mode function of the AVR75/85’s tuner.

NOTE: The , and buttons are also used

to control the PTY, AF and RDS Display functions of the tuner.

Select: This button enters settings to the receiver’s

10.

memory during system configuration.

OSD: Press this button to activate the on-screen menu

11.

system.

Tune/Search & Fast Forward: These buttons may be

19.

programmed to have multiple functions, which vary according to the input device selected.

a. When the TUNER has been selected, these buttons

are used to tune stations.

b. When CD, Tape, DVD, LD or VCR is the input source,

these buttons act as the Fast Scan Forward or Fast Scan Reverse controls.

Harman Kardon Dolby Digital Audio/Video Receiver

Preset/Disc: These buttons have multiple functions,

20.

which may vary according to the input device codes programmed.

a. When the TUNER has been selected, these buttons

will scroll up or down through the stations that have been programmed in the preset memory.

b. When CD is selected and the unit is a CD changer,

these buttons will change to the next disc or previous disc .

c. When Tape 1 or Tape 2 is the input source, and the

tape machine is a compatible Harman Kardon dual cassette deck, these buttons will switch between the “A” and “B” sides.

Channel/Skip: These buttons have multiple functions,

21.

which vary according to the input device selected and the codes programmed from another remote.

a. When TV, Vid 1 or Vid 2 are selected, they may

function as the channel up or channel down tuning buttons when programmed with the codes from another unit’s remote.

b. When CD is selected these buttons act as forward and

reverse “Skip” buttons to move to the next track or chapter on the disc.

c. When a compatible Harman Kardon cassette player

has been selected as Tape 1 or Tape 2, these buttons move the tape forward or backwards to the next selection using the Music Scan feature.

Memo: The memo button is used to enter stations to

22.

the tuner’s preset memory in either the manual or automatic modes. It is also used in the process of clearing the memory. This button also performs the functions of the “ ” symbol on compatible equipment.

P-Scan: Press this button to automatically scan through

23.

the stations preset into the tuner memory. Press the button again to end the scan when the tuner stops at the desired station. This button also performs the functions of the “ ” symbol on compatible equipment.

AVR75/85

NOTE: The 0 button has a dual function. It also serves

as the CLEAR button for use in programming the tuner or clearing the system memory.

Surround Mode Selection: Press one of these buttons

25.

to select a surround mode for the current listening session.

Sleep (AVR75): Press this button when the Sleep timer

26.

has previously been activated to view the time remaining before the unit turns off to the Standby Mode. To activate the Sleep function, first put the unit in the Tuner Mode by

min

OFF

min

OFF

pressing the AM/FM button . Next, press the Sleep button and note that the Sleep and Memo indicators

button and then press the Sleep button again to set

will blink. Within that blinking time press the Memo

the sleep time in the following order:

min20min30min40min50min60min90min

When the desired time is shown in the display, press the

Memo button to enter the time. The unit will go into

the Standby Mode when the time entered has elapsed.

Sleep (AVR85): Pressing this button when the Sleep

26.

timer has previously been activated allows you to view the time remaining before the timer function turns the unit off. When the remote is in the AM/FM mode , the Sleep function may also be changed or set by pressing this button so that the Sleep and Memo indicators blink (timer not yet set) or Sleep time is indicated (timer set already). Within that time press the Memo button so that both indicators blink slowly. Now press the Sleep button again to set the desired sleep time in the following order:

min

When the desired time is shown in the display, press the

Memo button to enter the time. The unit will go into

the Standby Mode when the time entered has elapsed.

Learn LED: This indicator will illuminate when a button

27.

on the remote is being programmed with signals from another remote during the “learning” mode. The light will go out when the signal is received and memorized.

Number Keys: These buttons serve as a ten button

24.

numeric keypad to enter tuner preset positions. They are also to be used to select channel numbers when TV has been selected on the remote, or to select track numbers on a CD, DVD or LD player, depending on how the remote has been programmed. The letters below the buttons are used to enter information for tuner station names.

Sending LED: This indicator should flash any time a

28.

button is pressed to confirm that a command is being sent to the receiver or another unit. If the light is dim or does not illuminate when a button is pressed the batteries in the remote should be replaced.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75 & AVR85 REAR PANEL CONNECTIONS

AVR75/85

30. AM Antenna: Connect the AM loop antenna supplied with the receiver to these terminals. If an external AM antenna is used, make connections to the AM and GND terminals in accordance with the instructions supplied with the antenna.

31. FM Antenna: Connect an indoor or external FM antenna to this terminal.

32. Tape 2 Out: Connect these jacks to the RECORD/INPUT jacks of a second audio recorder.

33. Tape 2 In: Connect these jacks to the PLAY/OUT jacks of a second audio recorder.

34. Tape 1 Out: Connect these jacks to the RECORD/INPUT jacks of an audio recorder.

35. Tape 1 In: Connect these jacks to the PLAY/OUT jacks of an audio recorder.

36. CD IN: Connect these jacks to the output of a compact disk player or CD changer.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

37. DVD Inputs: Connect the analog audio outputs and composite or S-Video output of a DVD or LV player to these jacks.

38. TV Inputs: Connect these jacks to the audio and video outputs of a TV Tuner, Cable TV converter box, satellite receiver, or any other audio/video source.

39. Pre-Outs: If external power amplifiers are used for any channels, connect them to these jacks.

40. Subwoofer Pre-Out: Connect this jack to the line level input of a powered subwoofer. If an external subwoofer amplifier is used, connect this jack to the subwoofer amplifier input.

41. Center: Connect these terminals to the center speaker.

42. Surround: Connect these terminals to the surround

speakers.

43. Front: Connect these terminals to the front speakers.

44. Switched AC Outlet: This outlet may be used to power

any device that you any wish to have on when the unit is turned on.

45. Unswitched AC Outlet: This outlet, may be used to power any AC device. The power will remain on at this outlet regardless of whether the AVR75/85 is on or off.

NOTE: The power consumption of the device plugged into each of these outlets should not exceed 120 watts.

46. Power Cable: Connect the AC plug to a non-switched AC wall output.

47. AC-3/PCM Optical Input: Connect the optical digital output from a DVD player, HDTV receiver, LV player or CD player to this jack. The signal may be either a Dolby Digital (AC-3) signal or a standard PCM digital source.

48. AC-3/PCM Coaxial Input: Connect the coax digital output from a DVD player, HDTV receiver, LV player or CD player to this jack. The signal may be either a Dolby Digital (AC-3) signal or a standard PCM digital source.

50. Remote IR In: If the AVR75/85’s front panel IR sensor is blocked due to cabinet doors or other obstructions, an external IR sensor may be used. Connect the output of the sensor to this jack.

51. Remote IR Out: This connection permits the IR sensor in the receiver to serve other remote controlled devices. Connect this jack to the “IR IN” jack on Harman Kardon or other compatible equipment.

52. VCR 1 Inputs: Connect these jacks to the audio, video and S-Video PLAY/OUT jacks of a VCR.

53. VCR 1 Outputs: Connect these jacks to the audio, video and S-Video RECORD/IN jacks of a VCR.

54. TV Monitor S-Video Output: Connect this jack to the S-Video input of the TV monitor or video projector to view S-Video sources selected by the receiver’s video switcher.

NOTE: Standard (composite) video and S-Video signals will appear only at their respective output. The AVR75/85 does not convert one video format to anther.

55. TV Monitor Video Output: Connect this jack to the standard (composite) video input of a TV monitor or video projector to view the on-screen menus and the output of any standard video source selected by the receiver’s video switch.

56. VCR 2 Outputs: Connect these jacks to the audio, video and S-Video RECORD/IN jacks of a second VCR.

57. VCR 2 Inputs: Connect these jacks to the audio, video and S-Video PLAY/OUT jacks of a second VCR.

58. Multiroom Audio Outputs: Connect these jacks to the optional audio power amplifier that powers remote room speakers with the input selected by the multiroom control system. This feature is found only on the AVR85.

59. Multi IR: Connect the output of an IR sensor in a remote room to this jack to operate the AVR85’s multiroom control system. This feature is found only on the AVR85.

49. AC-3 RF Input: Connect the AC-3 RF output of an LV player equipped for digital audio to this jack.

NOTE: Do not connect standard analog sources to these jacks (48)(49).

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

Service Bulletin #9705 for AVR85

Service bulletin # 9705 August 1997 To: All harman/kardon Service Centers Models: AVR85 Subject: No audio output

In the event you receive an AVR85 with the complaint “no audio output” (even though the display is lit up normally), perform the necessary steps listed below:

PROCEDURE:

1) Make sure the receiver is OFF and unplugged; remove the top cover of the unit.

2) Position the unit on its side, facing it so you are looking at the bottom cover, with the front of the receiver

facing left. The power transformer should be down, or nearest the work bench.

3) Remove the front right “foot” of the unit; then with a sharp pair of dikes or wire cutters cut the (16) metal

connections on the bottom screen attaching it to the bottom cover. Remove bottom screen from unit; for safety continue to cut all the remaining severed metal tabs from the bottom cover.

4) Locate and discharge main power supply electrolytic capacitors C802 & C803 with a 10 ohm, 10 watt resistor.

At this point, C802 & 803 are at the top of the main PCB; The two leads to C803 can be identified by the marking “-B” on the PCB; C802 is just above it. After discharge, check with voltmeter that capacitors have less than 1 volt DC across leads to confirm that discharge is complete.

5) See drawing; locate two areas of a poor solder connection due to an unintended mask, or dark-colored dot

that is partially covering the solder pad(s) where the leads come through. Unsolder the connection(s) with solder wick. Clean & scrape, if necessary, with a small screwdriver the foil/pad area thoroughly and remove any excess mask residue. Re-solder the connection(s) carefully to assure good connections.

6) Turn the unit upright; locate PCB P714, the small vertical circuit board nearest the main heatsink. Unplug

and remove small molex connector J701 at the top of the board; then remove the four mounting screws and metal tabs holding the top of the board in place.

7) Remove the two locks to the two sockets, J714 and J716. Take care not to damage the lock or connector

while attempting to unlatch the PCB; then unplug and remove the entire PCB P714.

8) Locate 10 ohm, ¼ watt resistors RH23, RH24, R745, R746, R747, R748; test with multimeter to assure they

are still 10 ohms +/- 5%. If values are different (indicating damage), replace as necessary.

9) Return PCB P714 to unit; re-attach molex connector; replace 4 screws and mounting tabs. Replace top cover

of receiver.

10) Re-attach the bottom screen to the bottom cover using 12 screws, (H/K# 51260306MO); the screen will be

upside-down compared to its former position when attached; replace the unit’s “foot”.

11) TO TEST:

a) Plug in the unit; connect speakers to left, right, and center output terminals. b) Turn the unit on; switch the unit to “Prologic” mode by use of the mode buttons on the front panel. c) Press the button “TEST TONE” on the remote control. The display should read “FRONT L” and “TEST”

should flash. d) Adjust the master volume, and verify test noise is heard from front left channel. e) Press the button “CH SELECT” on the remote control to change to the right and center speakers, and

verify test noise is heard from each one. f) Press the button “TEST TONE” on the remote control again to exit the test.

Model

AVR85

Serial number

120V

MJ0011-01001

MJ0011-02500

MJ0011-02501 and

above

Serial number

230V

MJ0012-01001

MJ0012-01500

MJ0011-01501 and

above

Status Action

Poor connections in

two areas on main

PCB

Modified by factory NONE REQUIRED

Clean & re-solder connections, check

or replace RH23,RH24,R745.R746,

R747, R748 if necessary

Harman Kardon Dolby Digital Audio/Video Receiver

View is upper left-hand corner of PCB Bottom (trace) side

AVR75/85

CONNECTION #1

CONNECTION #2

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

SERVICE AND ADJUSTMENT

I. SERVICE PROCEDURE

1.Tracking Point Memory

This service procedure can be used for measurement of the tuner circuit. With the POWER ON, press the “PRESET UP” button while pressing the “MEMO” button for at least 3 seconds or more. FLD will display “TRACKING”. Frequencies to be memorized are as follows:

VERSION P1 P2 P3 P4

US, Europe. 90.0 98.0 106.0 87.5

SCAN STEP P5 P6 P7 P8 P9 P10 P11 P12~P30

10 KHz 600.0 1000.0 1400.0 520.0

9 KHz 603.0 999.0 1404.0 531.0

MW/LW 171.0 207.0 270.0 152.0 531.0

2. FLD Segment Illumination

This service procedure will illuminate all segments by the following step: With the POWER ON, press the “FM/AM (TUNER)” button while pressing the “MODE” button for at least 3 seconds or more. This procedure takes 1 minute and 40 seconds to finish; at this point the procedure is complete.

Sequence

1. All segments will be illuminated for 5 seconds.

2. At the grid “1G”, segments are illuminated in the following order:

3. At the grid “2G” to “11G”, each segment is illuminated individually:

4. At the grid “12G”, segments are illuminated in the following order:

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

3. All Clear

This service program can clear all memorized operations and functions. With the POWER ON, press the “CD” button while pressing the “MODEs” button for more than 3 seconds. FLD shows “CLEAR MEMO” and power will be OFF.

II. ELECTRICAL ADJUSTMENT

1. Main amp idling current adjustment.

1) With the power OFF, set variable resistor R755 (Lch), R756 (Rch) RH28 (Center ch) on the PC board (P704)tothe center position.

2) Locate test points J723 (Lchan) J724 (Rchan) and J725 (Centerchan). These are 3 pin female molex connectors on the MAIN PCB. Attach a DC voltmeter (set to a low range) to the two outer pins on each test point. This is best accomplished by making up a “test plug” using a male molex connector that fits into the one in the unit, with wires attached, for connection to the voltmeter. An alternate method is to use two “mini-grabbers” to attach to the two outer pins on each connection. The middle pin has no connection.

3) After the above, adjust the idling current as follows: Turn the power ON and adjust variable resistor R755 (Lch), R756 (Rch), RH28 (Center ch) while observing the reading on the voltmeter.

*The target value is 11mV (25 mA).

NOTE:

When a unit whose idling current has been adjusted is switched on after 1 minute it reaches about 4.7~5.5mV. After 30 minutes, it reaches a balanced state and stabilizes at 8.9-11mV (target). Therefore, if the adjustment is made 30 seconds after the power is switched on, adjust to 3.5 ~ 4.0mV. In the same way, if 1 minute has passed since the power was switched on, adjust to 4.7 ~ 5.5mV. From 1 to 2 minutes, adjust to 6.2 ~ 6.4mV. From 2 to 4 minutes, adjust to 7.1 ~

7.6mV. From 4 to 7 minutes, adjust to 7.9 ~ 9.0mV. After more than 7 minutes since the power was switched on, adjust to the setting of 10.5 ~ 11.2mV. Here is a reference table for the adjustment values:

Time since power switched on Idling current adjustment

30 seconds 3.5 ~ 4.0mV

1 minute 4.7 ~ 5.5 mV

1 - 2 minutes 6.2 ~ 6.4mV

2 - 4 minutes 7.1 ~ 7.6mV

4 - 7 minutes 7.9 ~ 9.0mV

More than 7 minutes 10.5 ~ 11.2mV

III. ALIGNMENT PROCEDURES

Test Equipment Required

1) AM/FM Signal Generator

2) Video Signal Generator

3) Digital Multimeter

4) Distortion level meter

1. AM IF Adjustment

Step

Input Signal Source

Connection

Signal generator output to

transmission loop antenna.

(:Standard required loop)

Signal

Frequency

999 KHz (Europe)

1000 KHz

(USA)

Source Signal Output Level

and Modulation

Level 300m V/m (50dB/m)

Mod. 400 Hz 30%

Reception

Frequency

Tuning point LA06

Adjustment

Point

REMARK: For receiving antenna, the one supplied with the unit is adequate. This adjustment is not normally necessary, because the coil LA06 is preset by the original supplier.

Adjustment

Value

Output level

(L or R)

Maximum

at TAPE-OUT

Harman Kardon Dolby Digital Audio/Video Receiver

2. AM Tracking Adjustment

AVR75/85

Step

Input Signal Source

Connection

Signal generator output to

transmission loop antenna.

(:Standard required loop)

Repeat steps 1 and 2 until sensitivity is maximized.

3. AM Tracking Adjustment (LW)

Step

Input Signal Source

Connection

Signal generator output to transmission loop antenna. (:Standard required loop)

Signal

Frequency

603 kHz

(Europe)

600 kHz

(USA)

1404 kHz

(Europe)

1400 kHz

(USA)

Signal

Frequency

171 kHz

270 kHz

Source Signal Output Level and Modulation

Level 300 - 400 m V/m

Mod. 400 Hz 30%

Level 300 - 400 m V/m

Mod. 400 Hz 30%

Source Signal Output Level and Modulation

Level 300 - 400mV/m Mod. 400 Hz 30%

Reception

Frequency

603 kHz

(Europe)

600 kHz (USA)

1404 KHz

(Europe)

1400 KHz (USA)

Reception

Frequency

171 kHz LA03

270 kHz CA08

Adjustment

Point

LA01

CA01

Adjustment

Point

Adjustment

Value

Output level (L

or R)

Maximum at

TAPE-OUT

Output level (L

or R)

Maximum at

TAPE-OUT

Adjustment

Value

Output level (L or R)

Maximum

at TAPE-OUT

Output level (L or R)

Maximum

at TAPE-OUT

Repeat step 1 and 2 until sensitivity is maximized.

4. AM Auto Stop Adjustment

Step

Input Signal Source

Connection

Signal generator output to

transmission loop antenna.

(:Standard required loop)

REMARK: This adjustment is related to the FM muting Level Adjustment. The FM muting Level re-adjustment is necessary after this adjustment.

Signal

Frequency

999 kHz (Europe)

1000 kHz

(USA)

Source Signal Output Level and Modulation

500 m V/m (54 dB/m)

1000 m V/m (60 dB/m)

Reception

Frequency

999 kHz

(Europe)

AUTO

SCAN

Adjustment

Point

RA11

Only Confirm

Adjustment

Valve

“TUNED”

indicate on FLD

“TUNED”

indicate on FLD

5. FM MONO. Distortion Adjustment

Step

Input Signal Source

Connection

Signal generator output to FM

antenna terminal. (75 W )

Signal

Frequency

98 MHz

Source Signal Output Level and Modulation

500 m V (54 dB)

MONO 1 KHz/

Dev. 40 KHz 53.3%

(Europe)

MONO 1 KHz/

Dev. 75 KHz 100%

(USA)

Reception Frequency

98 MHz

(P2)

Adjustment

Point

L201

Adjustment

Value

Distortion level

Minimum

at TAPE-OUT

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

6. FM Muting Level Adjustment

Turn the variable resistor R212 until the word TUNED is not shown in the display. Then adjust the resistor R212 in the opposite direction until TUNED is shown in the display.

Step

Input Signal Source

Connection

Signal generator output to FM

antenna terminal. (75 W )

Signal

Frequency

98 MHz

Source Signal Output Level and Modulation

6.3 m V (16 dB)

MONO 1 KHz/

Dev. 40 KHz 53.3%

(Europe)

MONO 1 KHz/

Dev. 75 KHz 100%

(USA)

Over mentioned level

+3 dB

Reception Frequency

98 MHz

(P2)

AUTO

SCAN

Adjustment

Point

R212

Only Confirm

Adjustment

Value

“TUNED”

indicate on FLD

“TUNED”

indicate on FLD

7. FM STEREO Distortion Adjustment

Adjust the L channel with the RF signal modulated only L channel first and confirm the R channel with the RF signal modulated only R channel.

Step

Input Signal Source

Connection

Signal generator

output to FM antenna

terminal. (75W )

Signal

Frequency

98 MHz

Source Signal Output Level and Modulation

500 m V (54 dB)

L or R 1 kHz/

Dev. 40 kHz 53.3%

PILOT 19 kHz/

Dev. 6 kHz 8% (Europe)

L or R 1 kHz/

Dev. 67.5 kHz 90%

PILOT 19 kHz/

Dev. 6.75 kHz 9% (USA)

Reception

Frequency

98 MHz

(P2)

Adjustment Point

IF COIL

FRONT END

R218

Adjustment

Valve

Distortion level

Minimum

at TAPE-OUT

Distortion level

Minimum

at TAPE-OUT

REMARK: Adjustment with R218 is not necessary when the distortion level is less than 0.5% with adjusting IF coil.

8. FM STEREO Separation Adjustment

Step

Input Signal Source

Connection

Signal generator output to FM

antenna terminal. (75W )

Signal

Frequency

98 MHz

Source Signal Output Level and Modulation

Same specification as

FM STEREO distortion

adjustment.

Input only L channel

Same specification as

FM STEREO distortion

adjustment.

Input only R channel

Reception

Frequency

98 MHz

(P2)

98 MHz

(P2)

Adjustment

Point

R211

Adjustment

Value

Output level

Minimum

at TAPE-OUT

channel R

Output level

Similar as Rch

at TAPE-OUT

channel L

9. On Screen Display VCO Adjustment

Step

Input Signal Source and

Connection

Color bar or other standard

video signal.

Video signal generator

output to LD video input.

REMARK: Connect the TV monitor to the monitor output terminal of the product.

Measuring

Position

IC QX60

26pin and

GND

Measuring Equipment

DC voltmeter

(Impedance > 10k W /V)

Input

Selector

LD CX67 2.5V ± 0.1V

Adjustment

Point

Adjustment

Value

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

ALIGNMENT AND TEST POINTS

J101

LA01

R755

LEFT

R756

RIGHT

J723

J724

P104 - TUNER PCB

A101

LA03

CA08

R218

RA11

R201

R211

R906

LA06

CA01

R212

ALIGNMENT AND TEST POINTS

RH28

CENTER

J725

P704

MAIN PCB

PL04 - VIDEO SELECTOR PCB

CX67

OSD ADJ

QX60

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

IV. TECHNICAL DESCRIPTION

This product is a “Dolby Digital (AC-3)” decoder. By connecting this product with a Dolby digital compatible component such as a DVD player or DBS tuner, it will be capable of 5.1 CH (Front L/R, Rear L/R, Center and Sub-woofer) play.

This product is composed of approximately of 5 blocks including the AC-3 decoder & DAC block (P604), crossover block (PC04), power supply block (P704), volume control block (PE04) and front key input block (PU04).

V. SIGNAL AND CIRCUIT DESCRIPTION

OPT/COAX (AC-3/PCM input)

This signal is based on an additional format for transmitting the AC-3 data through the conventional digital audio interface (SPDIF). This SPDIF contains the compressed data for AC-3, instead of PCM Audio data. Similarly to the case of ROM data, whether the data is audio or non-audio is identified according to the status in the signal. This signal can be output from a DVD player, etc.

DAI (Digital Audio Interface) Receiver

This circuit extracts various clock and data signals from the signal input in the SPDIF format.

AC-3 Decoder DSP

This circuit generates the 6-channel data (Front L/R, Rear L/R, Center and LFE) based on the data output from the DAI, and outputs the 6-channel data to the DAC as 3 sets of 2-channel data.

Crossover

This circuit consists of 100Hz HPF for each channel, 100Hz LPF for sub-woofer channel, and mixing for sub-woofer output. Depending on the speaker mode setting, frequencies of this circuit will be changed.

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

AVR75/85 BLOCK DIAGRAM

AVR75/85 PAGE 22-1of4

EDCBA

HGF

LMK

AVR75/85 PAGE 22-2of4

PN54

PU54

CONNECT

AVR75/85 BLOCK DIAGRAM

AVR75/85 PAGE 22-3of4

AB CDE

FGH

AVR75/85 PAGE 22-4of4

LMI

Harman Kardon Dolby Digital Audio/Video Receiver

Power Suppies

USA/Canada ........AC120V, 60Hz

Europe ............AC230V, 50Hz

Dimensions (WxHxD)

Inches: ............17! x6* x 18"

mm ..............444x162x457mm

Weight (lbs/kgs) ........34/15.4

These specifications are service target specs. Specifications and components are subject to change without notice. Overall performance will be maintained or improved.

General Test Conditions

AVR75/85

SPECIFICATIONS

1 Test Methods

2 Power Source

3 Tuner Measurements

4 Audio Measurements

5 Control Settings

Test methods for Tuners and Amplifier. CP-2101, C6102, C6104

The amplifier shall be tested at the (Primary power supply) conditions shown in table below.

Destination Power Source

U 120 Volts RMS ± 1% 60 Hz ± 2% N 230 Volts RMS ± 1% 50 Hz ± 2%

The FM signal shall be 500uV (65dBf) with ± 75kHz

Deviation at 1000Hz and 50mV/m Loop injected with 30% modulation at 400Hz for AM, unless otherwise specified. TAPE OUT terminated with 47kohms load unless otherwise specified.

All audio measurement shall be made with test signals injected into CD.

Inputs and output measured at SPEAKER outputs with 8ohms ± 1% non-inductive resistor load, or at TAPE OUT with 10kohms ± 5%//1nF ± 5%

loads, unless otherwise specified.

Tone control : Mechanical center position Balance control : Mechanical center position Volume control : According to CP-2101 SPK SETT : ALL Large ATT : off unless otherwise specified

AC-3 Section Setting Night Mode : off SPK SETT NO. 1 Front: Small, Center: Small, Surround: Small, Subw: ON SPK SETT NO. 2 Front: Large, Center: Large, Surround: Large, Subw: ON SPK SETT NO. 3 Front: Large, Center: Large, Surround: Small, Subw: OFF

6 Used Test Disc Dolby AC-3 Demonstration & Test Laser Disc Ver. 1.0 (for AC-3 RF)

Harman Kardon Dolby Digital Audio/Video Receiver

Audio Section Performance Specifications

Seq # Test Reference Unit Nominal Limits

Continuous Power Output THD 0.09%

(L/C/R) Front L/R both, Center Ch.

! FTC ! CP-2101 5 CD Input 5 Volume Max.

Continuous Power Output

Surround Ch. THD 0.7%

Both Channels Driven ! CP-2101 ! FTC

DIN 1% Power Output

Front Ch. 5 CD In

Dynamic Power Output

Front Ch.

! CP-2101 ! CD IN

Power Bandwidth

THD 0.09% Front Ch.

! CP-2101 5 Volume: Max. 5 CD IN

Total Harmonics Distortion

at 65W Output Front Ch.

5 THD ! FTC ! CP-2101 ! Volume: Max.

Front L/R both, Center Ch. 5 CD IN MODE: STEREO

Surround L/R Ch.

Mode: PCM STEREO Service SPK SETT NO. 2

Total Harmonics Distortion

at 0.25W Output Front Ch.

5 THD ! FTC ! CP-2101 ! Volume: Max. 5 CD IN MODE: STEREO

Intermodulation Distortion

at 65W Output Front channel at STEREO Mode 5 CP-2101 (SMPTE Method)

5 Volume: Max.

Input Sensitivity for 1.0V Pre-Output

at CD IN Measured at 1kHz Vol: Max, Mode: STEREO

Difference of Input Sensitivity

at each source ch., at CD IN 1KHz

Frequency Response at Output -3 dB

Mode: Stereo ref: 1KHz

Treble Action

(L, C, R)

Bass Action

(L, C, R, SW)

Crosstalk (between Stereo Channels)

terminated by 1k V

5 without Hum & Noise 5 CP-2101

8W 20Hz 8W 1kHz 80 ]65

8W 20kHz 80 ]65

8W üü

Surr.

Ch.

8W 1kHz 75 ]65

8W üü 8W 1kHz 85 ]75 8W 1kHz üü

4/2W 1kHz üü

8W 32.5W

W W

20Hz

FRONT Ch.

L/R/C

Surr. Ch.

10KHz

100Hz

(SW

40Hz)

Input: CD

STEREO

1kHz 0.01

20kHz 0.05

40Hz 0.5

1kHz 0.5

20kHz 0.5

20Hz 0.05

1kHz 0.05

20kHz 0.05

8W 0.03

Front L/R mV 240 200~280

Front L/R dB ü*1

Front L/R Hz 10~70k 15~50k

Boost

Cut 10

Boost 10

Cut 10

100Hz 59 ]50

1kHz 59 ]50

10kHz 59 ]50

80 ]65

5~70k 10~60k

0.03

*0.09

*0.7

*0.09

7.5~12.5

AVR75/85

Harman Kardon Dolby Digital Audio/Video Receiver

Seq # Test Reference Unit Nominal Limits

AVR75/85

Crosstalk (between Stereo Channels)

Measured at TAPE IN

terminated by 1kV

5 without Hum & Noise 5 CP-2101

Output Impedance

Referred to 1kHz (SUB-WOOFER 40HZ) Input CD

Input Impedance at 1KHz CD 47k ]40k

ATT Level at 1kHz

Minimum Volume Hum & Noise

Output, CD Input

Using 20kHz LPF

Input: CD

STEREO

STEREO Front

Surr. Mode

Pro Logic

(LARGE)

100Hz

1kHz 80 ]70

10kHz 80 ]70

Preout

Front

Preout

Center

Preout

Surround

Preout

Sub Woofer

Tape/Video1 1100 1000~1200

Front 0.5 *1.0

Center 0.5 *1.0

Surround 0.5 *1.0

Sub Woofer PreOut

dB 6 4~8

80 ]70

550

0.5 *1.0

15 *20

350~

750

Front

Maximum Volume Hum & Noise

SPK Output, CD Input Input shorted Using: 20kHz LPF A weighted (Except Subwoofer)

Signal to Noise Ratio

at 1kHz 1W Output A weighted at short circuit 5 CP-2101

Signal to Noise Ratio at DOLBY

reference Level measured CCIR/ARM weighted referred to1kHz Input shorted Measured at Preout terminal PRO LOGIC/LARGE Master Vol.: 0dB

Dolby overload CD input Level at PREOUT terminal, THD 1% (PRO LOGIC) Vol. 0dB

Damping Factor

at 32.5W (8V) Output CD input, Front channel Surround MODE:STEREO

Center LARGE 8.0 *15

Surround LARGE 8.0 *15

Sub

Woofer

STEREO

PRO LOGIC 8.0 *15

PRO LOGIC

DVD

0.5V Input

350mV Input

Front

350mV Input

Center

350mV Input

Surround

1kHz V 2 ]1.9

100Hz üü

1kHz 60 ]50

10kHz üü

1.5 *3.0

150 *200

82 ]78

70 ]65

Harman Kardon Dolby Digital Audio/Video Receiver

AVR75/85

22 Power Consumption at STANDBY

DC offset of Speaker output

Volume Min. No Load

Idling Power Consumption

at Minimum Volume Control

Power Consumption at Rated Power

L/R channel Driven

Front

Center

Surround ü*60

AC Line

AC Line 290 245~335

AC Line 7 *10

Video Section Performance Specifications for Model AVR75

Seq

Output Level for CVBS 1VP-p

(100%) White CVBS) Input * at Monitor Output * Output terminated by 75V

Output Level Difference

between each source

Output Level for Y/C

1Vp-p(Y), 0.28Vp-p(C) Input * Measured S-Terminal * at Monitor Output * Output Terminated by 75V

Test Reference Units Nominal Limit

ü*60

% +/-3%

ü*60

85 70~100

1.0

0.28

0.9~1.1

+/-5%

0.9~1.1

0.25~0.3 1

Output Level Difference

between each source

Input Impedance

* 1MHz, 1VP-p Sine Wave Input * Output terminated by 75V

Output Impedance at 1Vp-p Output

* LD Input * 1MHz, Sine Wave

Frequency Response at -3dB

Referred to 1MHz measured at 1Vp-p output * Input LD * Terminated by 75V * Measured by Composite output

TV 75

Video1 75

Video2 75

Video3 75

Monitor 75

Video1 75

Video2 75

Monitor

Video1 8M ]6M

Video2 8M ]6M

+/-3%

8M ]6M

+/-5%

Harman Kardon Dolby Digital Audio/Video Receiver

FM Tuner Section Performance Specifications for Model AVR75/85

Seq # Test Measured Unit Nominal Limits

AVR75/85

Frequency Range

U Version

(MONO)

Usable Sensitivity at 75V

N Version

U, N, Version

3 dB Limiting Sensitivity

U Version 50 dB

50K MHz

90MHz

98MHz

106MHz

90MHz

98MHz

106MHz

OTHERS

UV (dBf)

98MHz

90MHz

98MHz

87.50~

108.00

1.3

13.5

1.3

13.5

1.3

13.5

1.3

13.5

1.3

13.5

1.3

13.5

2.6

19.5

0.8

9.3

1.9

16.8

1.9

16.8

*2.5 *19.2

*3.0 *20.8

*6.0 *26.8

*1.3 *13.5

*3.3 *21.6

6 Muting Threshold

7 Muting Window width at 98MHz

9 Mono Distortion

10 Overload Brake up

MONO Quieting Sensitivity

MONO S/N Ratio at 98MHz

MONO Hum & Noise at 98MHz

Frequency Response

referred to 30Hz-15kHz De-Emphasis

N Version 50 dB

106MHz

90MHz

98MHz

106MHz

500uV (65dBf)

75uS:U 50uS:U

1kHz % 0.2 *0.5

98MHz

UV (dBf)

kHz 670 630~6150

V (dBf)

1.9

16.8

1.9

16.8

1.9

16.8

1.9

16.8

76 ]71

70 ]65

6.3

27.2

+0.5

-2.0

1.0 71

*3.3 *21.6

*4.5 *24.3

4~11

23.2-32.0

+1.0

-4.0

]0.5 ]65

Harman Kardon Dolby Digital Audio/Video Receiver

Seq # Test Measured Unit Nominal Limits

AVR75/85

Capture Ratio at 98MHz

13 Intermediate Frequency

14 IF Rejection

15 Image Rejection

16 Signal +1/2 IF Rejection

U: 75kHz Dev. N: 40kHz Dev.

A.C.S. U:6400kHz

N:6300kHz

Other Spurious Response

Range 10MHz to 200MHz

U Version

N Version

45dBf 100uV

65dBf 500uV

98MHz 55 ]50

MHz 10.7 ü

90MHz üü

98MHz 70 ]60

106MHz üü

90MHz üü

98MHz 50 ]40

106MHz üü

90MHz üü

98MHz 70 ]60

106MHz üü

98MHz 75 ]65

üü

1.5 *2.5

18 AM Suppression at 98MHz

19 Signal Strength Meter Deflection

Tape Out Level U:75kHz Dev.

N:40kHz Dev.

100uV (45dBf)

500uV (65dBf)

98MHz mV 800 600~1300

Point 5 ]4

üü

55 ]45

Harman Kardon Dolby Digital Audio/Video Receiver

FM Tuner Section Performance Specifications for Model AVR75/85

Seq # Test Measured Unit Nominal Limits

AVR75/85

90MHz

1-a (STEREO)

50dB Quieting Sensitivity

at 75V

1-b (STEREO)

Quieting Slope at 98MHz

2-a (STEREO)

S/N Ratio at 98MHz

2-b (STEREO)

Hum & Noise at 98MHz

3-a (STEREO)

Switching Level at 98MHz

Input Level

Pilot Level

98MHz

106MHz

17uV (30dBf)

55uv (40dBf)

170uV (50dBf)

1mV (65dBf)

100mV (105dBf)

500uV (65dBf)

9% (6.75KHz)

500uV 65dBf)

Uv (dBf)

UV (dBf)

25.2

39.2

25.0

39.2

25.0

39.2

üü

68 ]63

63 ]58

6.3

27.2

5 *7

*40.0 *43.3

*11.0 *32.1

4-a (STEREO) Distortion at 50dB Quieting Sensitivity

6 Sub Carrier Rejection

4-b (STEREO)

Distortion at 98MHz

500uV(65dBf) Input U: 67.kHz+6.75kHz Dev. N: 40.0kHz+6.00kHz Dev.

Separation at 98MHz

500uV(65dBf) Input U: 67.5kHz+6.75kHz Dev. N: 40.0kHz+6.00kHz Dev.

Separation at 98MHz

500uV(65dBf) Input

67.5kHz+6.75kHz

RDS Sensitivity

67.kHz + 6.0kHz + RDS Dev.

98MHz üü

100MHz üü

1kHz 0.4 *1.0

6kHz üü

100Hz

1kHz 40 ]30

10kHz üü

100Hz üü

1kHz üü

NR ON 10kHz üü

98MHz 70 ]60

98MHz 65dBf 500uV

kHz Dev.

üü

0.5 *1.2

Harman Kardon Dolby Digital Audio/Video Receiver

AM Tuner Section Performance Specifications for Model AVR75/85

Seq

AVR75/85

Test Measured Unit Nominal Limits

Frequency Range(MW)

Frequency Range(LW)

2-a

Usable Sensitivity of MW Band

Loop ANT.

2-b

Usable Sensitivity of LW Band

Loop ANT. N Version

3 IF Rejection Referred to #2-a

4 Image Rejection Referred to #2-a

5 Spurious Rejection Referred to #2-a

6 AUTO STOP Sensitivity

U: 10k others: 9k

10kHz STEP 9kHz STEP

1kHz 152~282 ü

603kHz 600kHz

999kHz 1000kHz

1404kHz 1400kHz

171kHz 2000 *

207kHz 1500 *

270kHz 1500 *

999kHz 1000kHz

kHz

uV/m

uV/m 500 *1000

520~171 0 531~160 2

700 *

500 *

60 ]50

40 ]35

65 ]55

8 S/N Ratio at 50mV/m Input (Loop)

9 Frequency Response at -3dB (Loop)

Selectivity Referred to #2-a

at 999/1000kHz

Distortion 50mV/m Input at

999kHz/1000kHz (Loop)

AGC Figure of Merit Referred to

100mV/m Input (Loop)

Overload Break up at 999kHz/1000kHz

Signal Strength Meter Deflection

at 999/1000kHz (Loop)

TAPE Output Level at 50mV/m Input (LOOP)

9kHz 10kHz

18kHz 20kHz

999kHz 1000kHz

30% mod.

90% üü

999kHz 1000kHz

T.H.D 10%

50mV/m POINT 5 ]4

999kHz 1000kHz

Hz 100~2.2K 150~1.8K

dB 55 ]48

mV/m 1000 ]500

mV 240 150~340

30 ]20

70 ]60

50 ]45

1.0 *2.0

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