Harman kardon td 4500 service manual

Page 1

The Harman Kardon
Model TD4500
CD TRANSCRIPTION QUALITY CASSETTE DECK

Teelmmfical Mandel

The following marks found in the parts list of this manual
identify the models as follows.

on :North America area model

® :North America area Black version

0 :lnternational model

on :lnternational model Black version

harman/kardon

240 Crossways Park West, Woodbury, N.Yl 11797
1112-3152163A6 P7119010 2000 Printed in Japan

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TD4500

i

SPECIFICATIONS

Nominal Limit
4-traok 2 Channel Stereo
Cassette Deck

Track Configuration

- MECHANICAL SECTION
Record/ Playback Tape Speed

Drift 4.75cm/sec. 0.2% 12.0%
Wow and Flutter 0.045%(NAB)§0.1%
0.07%(CCIR)
Take Up Torque 50gr.cm 35~709r.cm
Back Tension 4gr.cm 2~69r.cm

F.FWD Torque 1009mm 70~1509r.cm
REW Torque 1009mm 70~1509r.cm
F.FWD/REW Time 90sec. éiOOsec.
(C-60 Tape)

- AMPLIFIER SECTION

Bias Frequency 105kHzi5kHz

Playback Output
Signal-to-Noise Ratio

at Line Input
(Input 1kHz,100mV)
IHF-A WTD at Dolby Level

1150mVi1.5dB

Dolby NR off
LN 51dB
Cr02 54dB
Metal 54dB
Dolby B NR
LN 61dB
CrOz 64dB esodB
Metal 64dB eeoaa
Dolby 0 NR
LN 66dB
CrO; 70dB eeeda
Metal 70dB :66dB

Nominal Limit

Channel Separation 45dB aSSdB
Crosstalk 70dB £60dB
Record/ Playback Distortion
(Input 1kHz)
LN 0.9% $2.0%
CrOz 1.5% §3D%
Metal 1.3% é2.0%
MPX Filter Attenuation
at 15kHz 0.3dB §1dB
at 19kHz 35dB g30dB
Erase Ratio (Input 80Hz)
LN 70dB aeoaa
Metal 61dB g56dB

Input Sensitivity
(Input ikHz) at Line Input
Input Impedance
(Input 1kHz) at Line Input

45mV 40(min)~100(max)mV,
22kg 19(min) ~30(max)kfl

- DIMENSIONS(WxHxD) 17-3/8" X 5" x 12-5/8

(442 x 126 X 320 mm)

- WEIGHT 13.4Ibs(6.1kg)

' POWER SUPPLY
U.S.A. and Canada models
International model

' POWER CONSUMPTION
U.S.A. and Canada models 28W
International model 30W

ACIZOV, GOHZ
A0220V/240V,50/60Hz

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

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

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

2. Replace all protective devices such as

SIMPSON MODEL 229 ETC. FOR
LEAKAGE TEST

unit, TO EACH EXPOSED T0 AC GROUND SUCH
METAL SURFACE OF AS WATER PIPEBX CABLE,
UNIT UNDER TEST HIGH GROUND CONDUIT, ETC.
VOLTAGE LEAD

nonmetallic control knobs, insulating
fishpapers, cabinet backs, or shields,
isolation resistorcapacitor networks,
mechanical insulators, etc.

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 alter-
nate method as follows:

Plug the AC line 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;;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 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 posi-
tions.)

on +LEAD
VTVM
0 AC SCALE 6

1.5kfl
10W

4w»

0.15IIF

TEST PROBE
TO EXPOSED CONNECT T0 KNOWN
METAL PARTS EARTH GROUND

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.