Harman Kardon Harman/kardon HK3490 User manual

harman/kardon Service Manual
HK 3490/230
2 x 120W STEREO RECEIVER
CONTENTS
LEAKAGE CHECK 2
ESD WARNING 3
TECHNICAL SPECIFICATIONS 4
TROUBLESHOOTING GUIDE 5
FRONT PANEL CONTROLS 6
REAR PANEL CONNECTIONS 7
PACKAGE LIST AND PARTS 8
DISASSEMBLY 9
EXPLODED VIEW AND PARTS 13
ELECTRICAL PARTS LIST 14
SEMICONDUCTOR PINOUTS 34
PCB DRAWINGS 58
BLOCK DIAGRAM 64
WIRING DIAGRAM 65
AMP BIAS ADJUSTMENT 66
SCHEMATIC DIAGRAMS 67
Released EU2008 harman/kardon, Inc. Rev 0, 09/2008
250 Crossways Park Dr.
Woodbury, New York, 11797
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HK 3490/230 Service Manual
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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
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HK 3490/230 Service Manual
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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 :
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HK 3490/230 Service Manual
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Technical Specifications
18 TECHNICAL SPECIFICATIONS
Audio Section
Stereo Mode
Continuous Average Power (FTC)
HK 3490: 120 Watts per channel, 20Hz –20kHz
@ < 0.07% THD, both channels driven into 8 ohms
HK 3390: 80 Watts per channel, 20Hz–20kHz@ < 0.07% THD,
both channels driven into 8 ohms
Input Sensitivity/Impedance
Linear (High Level) 200mV/47kohms
Signal-to-Noise Ratio (IHF-A) 95dB
Frequency Response
@ 1W (+0dB, –3dB) 10Hz –110kHz
High Instantaneous
Current Capability (HCC) HK 3490: ±45Amps
HK 3390: ±42Amps
Transient Intermodulation
Distortion (TIM) Unmeasurable
Rise Time 16 µsec
Slew Rate 40V/µsec
FM Tuner Section
Frequency Range 87.5–108MHz
Usable Sensitivity IHF: 1.3µV/13.2dBf
Signal-to-Noise Ratio Mono/Stereo: 73/72dBA (DIN)
Distortion Mono/Stereo: 0.2/0.3%
Stereo Separation 40dB @ 1kHz
Selectivity ±400kHz, 65dB
Image Rejection >80dB
IF Rejection >100dB
AM Tuner Section
Frequency Range 522–1620kHz
Signal-to-Noise Ratio >40dB
Usable Sensitivity Loop: 500µV/M
Distortion 1kHz, 50% Mod: 0.8%
Europe: ±9kHz
Video Section
Television System NTSC/PAL/SECAM
Signal Format Composite
Input Level 1Vp-p
Input Impedance 75 ohms, unbalanced
Sync Polarity Negative
Output Level 1Vp-p
Output Impedance 75 ohms, unbalanced
Video Frequency
Response 10Hz – 10MHz
General
Power Requirement AC 230V/50Hz
Power Consumption HK 3490: 3W standby, 310W maximum
(both channels driven)
HK 3390: 3W standby, 230W maximum
(both channels driven)
Dimension (Max)
Width 440mm
Height 165mm
Depth 382mm
Weight HK 3490: 10.4kg
HK 3390: 9.5kg
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.
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HK 3490/230 Service Manual
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Troubleshooting Guide
TROUBLESHOOTING 17
English
This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. If you have a problem, first check this list for a
possible solution. If the problem persists, consult your authorized Harman Kardon Service Center.
If the problem is... Make sure that the...
No lights appear when System Power
2 button Unit is plugged into a live outlet.
is pressed
No sound is heard Unit has not been muted.
Correct input function selector button has been pressed.
Volume is turned up.
Speakers have been turned on using the Speaker Selectors 67 ü√.
No output from one or more channels Cables are not defective: check/replace speaker cables.
Tuner sound has a large amount of interference, or Antenna is properly connected.
the “Stereo” display is not illuminated, or Antenna is properly located.
Tuner sound distorts and/or is noisy Antenna is set in the proper direction.
Antenna is adequate to receive the desired station.
Tuner is intermittent or continuously buzzing or hissing Unit is away from fluorescent lights, TVs, motors and
other electrical appliances.
Remote does not function correctly Batteries are not weak, and replace them if necessary.
Correct device page has been selected by pressing the Source Selector key ç.
Remote sensor is not obstructed, and remote is pointing directly at sensor at an angle of
no more than 30 degrees. Also, check for fluorescent lighting, which may be interfering
with the IR transmission.
Cassette or CD sounds distorted Cassette deck or CD player has not been plugged into the Phono input.
(Only use the outputs of a turntable or tonearm with the Phono input.)
Turntable sounds distorted Turntable has been plugged into the Phono Input
5 ,
as the other inputs are not compatable with turntable signal levels
No video image Video source unit’s video ouput is properly connected, the source is turned on and the correct
video input on the HK 3490/HK 3390 has been selected
Video Monitor Output
K is connected to a TV or video display, and that the TV is turned
on and the proper input on the TV has been selected
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1 Video 3 input jacks
2 System Power Control
3 Power Indicator
4 Headphone Jack
5 Mute
6 Speaker 1 Selector
7 Speaker 2 Selector
8 Phone Input Selector
(The Bridge/Phono Input Selector HK 3490 only)
9 Tape Monitor Input Selector
) Tuning Button
! Video 1 Input Selector
@ Preset Scan
# CD Input Selector
$ Video 2 Input Selector
% Preset Selector
^ DSP Function Selector (HK 3490 only),
Dimmer Switch (HK 3390 only).
& FM/AM Selector
* FM Mode Selector
( Sleep Button
Ó Bass Control
Ô Treble Control
 Balance Control
Ò Volume Control
Ú Video 3 Input Selector
Û Information Display
Ù Remote Sensor Window
1 Video 3 Input Jacks: These audio/video
jacks may be used for temporary connection to
video games or portable audio/video products
such as camcorders and portable audio players.
To select the front-panel inputs, press the Video
3 Input Selector Úrepeatedly until the
Information Display shows the text "VIDEO F /
ANALOG". When using the rear panel inputs,
the Display shows "VIDEO 3 / ANALOG".
2 System Power Control: When the Main
Power Switch
S is “ON,” press this button to
turn on the HK 3490/HK 3390; press it again to
turn the unit off (to Standby). Note that the
Power Indicator
3 changes color from amber
to white when the unit is on.
3 Power Indicator: This LED will illuminate in
amber when the unit is in the Standby mode to
signal that the unit is ready to be turned on.
When the unit is in operation, the indicator will
turn white. A red indicator means that the unit is
in the Protect mode, and should be turned off
and then checked for a possible speaker wire
short circuit.
4 Headphone Jack: This jack may be used to
listen to the HK 3490/HK 3390’s output through
a pair of headphones. Be certain that the head-
phones have a standard 6,3 mm stereo phone
plug. When a headphone is connected, the
Speakers 1 and Speakers 2 Selectors are inac-
tive.
5 Mute: Press this button to momentarily
silence the speaker and preamp output of the
HK 3490/HK 3390.
6 Speakers 1 Selector: Press this button to
turn the speakers connected to the Speaker 1
output terminals
G on or off.
7 Speakers 2 Selector: Press this button to
turn the speakers connected to the Speaker 2
output terminals
H on or off.
89@
^
(
7
)#
!
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*
3
4
2
5
6
6
6
6666
6
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6
6
6
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6
20
22
25 23
26
24 21
1
4FRONT PANEL CONTROLS
Front Panel Controls
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HK 3490/230 Service Manual
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6REAR PANEL CONNECTIONS
Rear Panel Connections
ON
OFF
OP
B
A
87
7
J
L
J
L
KN
N
F
4
D
C
FE
R
5
6
I
GS
H
0AM Antenna
1FM Antenna
2Phono Ground
3Remote IR In
4Remote IR Out
5Phono Inputs
6CD Inputs
7Video 1 Audio/Video Play/In
8Tape Monitor Play/In
9Tape Monitor Record/Out
AVideo 1 Audio/Video Record/Out
BVideo 2 Audio/Video Inputs
CMain In
DVideo 3 Audio/Video Inputs
EPreamp Out
FSubwoofer Out
GSpeaker 1 Terminals
HSpeaker 2 Terminals
ISwitched AC Outlet
JPower Cable
KVideo Monitor Outputs
LThe Bridge Input (HK 3490 only)
MUpdate Cable Input
NReset Switch
OCoaxial Digital Audio Input (HK 3490 only)
POptical Digital Audio Input (HK 3490 only)
QSubwoofer Trigger Outputs
RSubwoofer Link On/Off Switches
SMain On/Off Switch
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HK 3490/230 Service Manual
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HK 3490/230 Service Manual
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HK 3490 DISASSEMBLY PROCEDURES
<1> TOP-CABINET(21) REMOVAL
1. Remove 13 screws(S1) and then remove the Top-cabinet.
<2> FRONT PANELASS’Y REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Disconnect the lead wire(BN22-11P) on the Potentiometer PCB (43-4) from connector(CN22) on the Input
PCB(45).
3. Disconnect the lead wire(BN13-9P) on the Front PCB(43-1) from connector(CN13) on the Main PCB(44-1).
4. Disconnect the connector(CN87-19P) on the Front PCB(43-1) from connector(CN87) on the Main PCB(44-1).
5. Disconnect the lead wire(BN73-5P) on the Phone PCB(43-3) from connector(CN73) on the Main PCB(44-1).
6. Disconnect the lead wire(BN84-5P) on the Front input video PCB(43-6) from connector(CN84) on the Input
PCB(45).
7. Remove 1 screw(S6) and then lead wire(JW98,JW99-1P) on the PCB(43-5, 43-3).
8. Remove 1 screw(S6) and then lead wire(JW97-1P) on the Power led PCB(43-2).
9. Remove 10 screws(S1) and then remove the Front Panel ASS’Y.
<3> Potentiometer PCB(43-4) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Remove 2 screws(S3) and then remove the Potentiometer PCB(43-4).
<4>PHONE PCB(43-3) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Remove 2 screws(S4) and then remove the Phone PCB(43-3).
4. Disconnect the lead wire(BN73-5P) from connector(CN73) on the PHONE PCB(43-3).
<5>Volume PCB(43-5) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Pull out the Volume Knob ASS’Y .
4. Remove 4 screws(S3) and then Volume PCB(43-5).
5. Disconnect the lead wire(BN81-5P) from connector(CN81) on the Volume PCB(43-5).
<6>POWER LED PCB(43-2) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Remove 2 screws(S3) and then remove the Power led PCB(43-2).
4. Disconnect the lead wire(BN82-5P) from connector(CN82) on the Power led PCB(43-2).
<7> Front input video PCB(43-6) REMOVAL
1. Remove the Top-cabinet, referring to the previous step<1>.
2. Remove the Front Panel ASS’Y, referring to the previous step<2>.
3. Remove 2 screws(S3) and then remove the Front input video PCB(43-6).
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