Harman kardon tu 910 service manual

Page 2

SPECIFICATIONS

0 FM SECTION
. ». , Tuning Range
50dB Ouieting Sensitivity

Nominal Limit

87.3 N 108.4 MHz

Mono 15.2dBf S IBdBf
Stereo 37dBf S 40dBf
Usable Sensitivity 10.2dBf (IHF) S 15dBf
Image Ratio 56dB 2 50dB
IF Rejection 83dB 2 80113
Spurious Response Rejection BSdB 2 80dB
Capture Ratio l.ldB S 2.0dB
Alternate Channel Selectivity 65dB Z 50dB
AM Rejection 54dB Z 45dB
~ Signal to Noise Ratio
' for U.S.A. & Canada models
Mono 3213 2 78dB
Stereo 73dB 2 70dB
for General model

, Mono 76dB 2 72dB
" Stereo 67dB 2 64dB

Total Harmonic Distortion
Mono 0.06% S 0.15%
Stereo 0.1% S 0.3%

Stereo Separation at 1kHz
for U.S.A. 8l Canada models 57113 2 45dB
for General model 57dB 2 40:13

Output Level/Impedance (Stereo) 775mV/2.2k.Q

"-a-l
0AM SECTION Nominal Limit
Tuning Range 515 ~ 1,680 kHz
Usable Sensitivity
External Antenna 9pV S 20uV
Loop Antenna 220uV/m (
Selectivity seal; 2 35dB
Signal to Noise Ratio 53dB 2 50dB
lmage Rejection 44dB Z seas
lF Rejection 70dB Z SOdB

ODIMENSIONS (W x H x D) I7-1/2"x2-11/16"x14-11/16"
(443 x 68 x 372 mm)
OWEIGHT 8 lbs 3 oz. (3.7 kg)
OPOWER SUPPLIES
for U.S.A. 8i Canada models

for General model

AC 120V, BOHZ

AC IOU/120/220/240V,
50/60 Hz

OPOWE R CONSUMPTION 18W

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 subject to change without notice.
Overall performance will be maintained or improved.

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

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

1. Inspect all lead dress to make cer-
tain that leads are not pinched or
that hardware is not lodged be-
tween 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 cov-
ers or shields, isolation resistor-
capacity networks, mechanical in-
sulators, 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 paralleled by a 0.15pF capac-
itor, 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 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.)

0
,-
0!
D
I-

returning the unit to the owner.

TO EACH EXPOSED
METAL SURFACE OF
UNIT UNDER TEST

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

TO AC GHOUND SUCH

AS WATER OR BX CABLE.
HIGH CONDUIT, ETC.
VOLTAGE

OR +LEAD

LEAD

6

VTVM
-OAC SCALE 0-

1.5kfl
IOW

.__IVW_

_||_

0.15uF

TEST PROBE

T0 EXPOSED
METAL PARTS

CONNECT TO KNOWN
EARTH GROUND

A reading of 0.35 volt RMS or more is excessive and indicates a potential shock hazard which must be corrected before