Harman kardon dc 5700 service manual

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The Harman Kardon

L Model DC5700
DUAL CASSETTE DECK

Manual 179A

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

® : North America area model Black version

(B : International model Black version

SPECIFICATIONS
LEAKAGE TEST ......
CONTROLS AND FUNCTIONS .....
DISASSEMBLY PROCEDURES .....
POWER CORD REPLACEMENT .
CIRCUIT DESCRIPTION
TIMING CHART ................
ALIGNMENT PROCEDURES ......
T LEAD WIRES STYLING DIAGRA
BLOCK DIAGRAM ..............................

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CONTENTS

GENERAL UNIT ..........................
GENERAL UNIT PARTS LIST .....
CASSETTE TAPE RECORDER

MECHANISM, PARTS LIST..
WIRING DIAGRAM
P. C. BOARD .............
ELECTRICAL PARTS LIST
IC BLOCK DIAGRAM
SCHEMATIC DIAGRAM

harman/kardon

Parts and Service Office
240 Crossways Park West,Woodbun/,N.Y, 11797
1112-0030A152 P429109 2000 Primed in Japan

001.930

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SPECIFICATIONS
Nominal Limit Nominal Limit
Track Configuration 4-track 2 Channel Stereo Dolby C NR LN 66 dB
Cassette Deck Cr02 70 dB g 66 dB
Metal 70 dB g 66 dB
' MECHANICAL SECTION Channel Separation 45 dB g 35 dB K
Record/Playback Tape Speed Crosstalk 70 dB g 60 dB
Drift 4.75 cm/sec. 0.2% 5 2.0% Record/Playback Distortion
Heads (Primary/Secondary) 2/2 _ (lnput1 kHz)
Wow and Flutter NAB 0.05% g 0.1% LN 0.7% 5 2.0%
CCIFI 0.08% CrOz 0.8% § 3.0%
Take Up Torque 50 gr.cm 35 - 70 gr.cm Metal 0.9% g 2.0%
Back Tension 2 gr.cm 2 - 6 gr.cm MPX Filter Attenuation
F. FWD Torque 100 gr.cm 70 - 150 gr.cm at 15 kHz 0.3 :18 § 1 dB
Rew. Torque 100 gr.cm 70 - 150 gr.cm at 19 kHz 35 dB g 30 dB
F. FWD/Flew Time 85 sec. § 100 sec. Erase Ratio (Input 80 Hz)
(C-60 Tape) LN 70 dB g 60 dB
Metal 60 dB g 56 dB
_ Input Sensitivity
AMPLIFIER SECTION (lnput1 kHz) at Line Input 43 mV 30 -- 80 mV
Record/Playback Frequency Input Impedance
Response (at -3 dB) LN 20 - 18 kHz 20 - 17 kHz _
CrOz 20 _ 18 kHz 20_17 kHz (lnput1 kHz) at Line Input 23 kg 15 25 kn
Copy Mode Frequency Mata' 2° ' 3 kHz 2° - 17 kHz - DIMENSIONS (WxHxD) 17-3/ " x 5" x 12-5/3"
Response LN 40 - 16 kHz 40 - 15 kHz (3 134 x 342) mm
CrOz 40 - 16 kHz 40 - 15 kHz ,
Metal 40 - 16 kHz 40 - 15 kHz WEIGHT 17.2 lbs (7'8 kg) ,.
Bias Frequency 105 kHz :l:5 kHz
Playback Output 700 mV $1.5 dB POWER SUPPLY
Signal-[o-Noise Ratio U.S.A and Canada models AC120V, 60 Hz
(at Line Input) International model AC230V/240V, 50/60 Hz
(Input 1 kHz, 100 mV)
lHF- A WTD (at Dolby level) - POWER CONSUMPTION
Dolby NR off LN 51 dB U.S.A. and Canada models 29 w
002 54 dB International model 31 W
Metal 54 dB
Dobly B NR LN 61 dB
Cr02 54 dB 2 60 dB These specifications are service target specs.

LEAKAGE TEST (FOR SERVICE ENGINEERS IN THE U.S.AI

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

1. Inspect all lead dress to make
certain that leads are not pinch- SIMPSON MODE: .Zrégémr FOR
ed orthat hardware is not lodged LEAKA

film; lldaitsmrtlllllrhi
Iejeplace alllllprbtebtive d
such as nonmetallic control

UNIT UNDERITESTI IHIGH llllllll

VOLTAGE

LEAD

on +1LEAD
knobs, insulating fishpapers,
cabinet backs, or shields, isola-
tion resistorcapacitor networks, 6
mechanical insulators, etc.

3. Be sure that no shock hazard exists: check for VTVM
leakage current using Simpson Model 229 Leakage -0 AC SCALEo-
Tester, standard equipment item No. 21641, RCA
Model WT540A or use alternate method as follows: 1,5kn

Plug the AC line cord directly into a 120-volt AC 0

receptacle (do not use an Isolation Transformer for W)!

this test). Using two clip leads, connect a 1500 ohm,
10-watt resistor paralleled by a 0.15mF capacitor, in
series with all exposed metal cabinet parts and a I I
known earth ground, such as a water pipe or conduit. ms:
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 reisistor
connection to each exposed metal part having a return
path to the chassis (antenna, metal, cabinet, screw to exposgp CONNECT T0 Known
heads, knobs and control shafts, escutcheon, etc.) and METAL PARTS EARTH GROUND
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.

TEST PROBE