Harman kardon hk 795 i service manual

Page 2

SPECIFICATIONS
0 FM SECTION

Tuning Range
50dB Ouieting Sensitivity

Nominal leit

B7.5~108.0MHz

Mono 14.9dBf s18dBf

Stereo 36.9dBf s 40dBf
Usable Sensitivity 10. 6dBf s 14dBf
Image Ratio 76.5dB 2 60dB
IF Rejection 76dB 2 70dB
Spurious Response Rejection 101dB 2 80dB
Capture Ratio 1.5dB s 2.5dB

Alternate Channel Selectivity 66.5d82 SOdB

AM Rejection 54.5dB245dB
Signal to Noise Ratio
Mono 82:13 2 78dB
Stereo 74.5dB 2 72dB
Total Harmonic Distortion lGSdBf 1kHz Input)
Mono 0.09% s 0.2%
Stereo 0.12% 50.3%
Stereo Separation at 1kHz 52.9dB245dB
0 AM SECTION

Tuning Range 520~1,710kHz

Usable Sensitivity 14p.Vm s ZOuVm
Selectivity 30dB 2 22dB
Signal to Noise Ratio 53dB2 50dB
Image Rejection 3MB 2 28dB
IF Rejection 61dB 2 50dB
0 AUDIO SECTION
Usable Sensitivity
Video/CD 135mV a: 25mV
15 Phone 2.2mV $0.2mv
cs Signal to Noise Ratio
1; ' Video/CD 80dB 2 78dB
.: Phono 79.5dB 2 77dB
Channel Separation at 10kHz
Video/CD Boos 2 45dB
Phone 57. 5dB 245dB

Nominal lelt

IM Distortion Ratio 0.13%502596
RMS Output Power
89, 1kHz, THD 0.08% 77.6W27OW
49, 1kHz, THD 1.0% 123.2W2110W
Damping Factor at 1kHz 44240

Tone Control Characteristics
Bass Turnover Frequency 400Hz/200Hz
1i'eble Turnover Frequency 2kHz/6kHz
Base at 50H:

Boost 10dB a: 2dB
Cut -10dB a; 2dB
Treble at 10l Boost 10dB 2 2dB
Cut - 10dB 2 2dB
Loudness Control
at IOkHz 3:13 i: IdB
at 50Hz 10dB * 2dB
Subsonic Control
at 15H: 3dB :e IdB
DC Output Voltage
L channel OmV a: 60mV
R channel OmV d: 60mV

RIAA Equalization at Tape Out (20Hz/20kHzl
0.15dB t 0.5dBIO.15dB t 0. 5dB

. DIMENSIONS (W x H x D) 17-3/8" x 5-1/ " x 14-1/2"
(443 x134 x 368 mm)

0 WEIGHT 24.3 lbs. l1kgl
. POWER SUPPLY AC120V, 60H:
. POWER CONSUMPTION 240W (330VA)

This specification is the target of servicing. But" there is a case that the
specification is not applicable to the measurement condition and instrument.

Specifications and components enhjectm change without notice Overall
performance will he maintained or improved.

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

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

1. Inspect all lead dress to make certain
that leads are not pinched or that
hardware is not lodged between
the chassis and other metal 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 servic-
ing 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 paralleled by a 0.15 uF 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 resistor. (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 shatts, escutcheon,
etc.) and measure the AC voltage drop across the

TO EACH EXPOSED
METAL SURFACE OF
UNiT UNDER TEST

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

TO AC GROUND SUCH
AS WATER PIPE,BX CABLE,
CONDUIT, ETC.

HIGH
VOLTAGE
OR + LEAD

GROUND
LEAD

6

VTVM
.0 AC SCALEo_

1.5kfl
10W

VVV

_'I.__

0.15uF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT T0 KNOWN
EARTH GROUND

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

2 returning the unit to the owner.