Harman kardon vcd 1000 service manual

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The Harman Kardon
Model VCD1000

Manual 81A

HIGH FIDELITY AUDIO/VIDEO CASSETTE DECK

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CONTENTS
SPECIFICATIONS ....................... 2
VHS Hl-Fl SYSTEM ...................... 2
M08 STEREO TV BROADCAST SYSTEM ....... 3
LEAKAGE TEST ........................ 3
CIRCUIT DESCRIPTION ................. 4, 5
CONNECTIONS ....................... 6-8
DISASSEMBLY PROCEDURES .............. 9
REMOVAL OF PRINTED CIRCUIT BOARDS .10-12
CLEANING ........................... 13
INTERCHANGEABILITY METHODS AND
ADJUSTMENTS
1. PICTURE CONTROL ADJUSTMENT ..... I4
2. REMOVAL OF PRIMARY PARTS ..... 14-15
3. ELECTRICAL ADJUSTMENT ........ 17-24
4. MECHANICAL ADJUSTMENT ....... 25-34
KEY TO ABBREVIATIONS ................ 35

THIS VIDEO CASSETTE DECK IS
VHS BASED ON THE VHS FORMAT. ONLY
VIDEO CASSETTE TAPES WITH THE

VHS MARK MAY BE USED WITH THIS
MODEL.

PARTS LIST
1. CABINET ASSEMBLY ............. 36, 37
2. DECK ASSEMBLY ................ 38-45
3. ELECTRICAL PARTS ............. 46-54
CIRCUIT BLOCK DIAGRAM ............. 55-59
PCB BLOCK DIAGRAM .................. 60
SCHEMATIC DIAGRAM ................ 61-68
, P.C.B, DIAGRAM .................... 69-75
PACKAGE ........................... 76

' harman/kardon

240 Crussways Park West. Woodbuw. N Y 11797

H12+H§281A5 90884101000 Prmled mJapan

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VCD1000

SPECIFICATIONS

Video Section
Television System

Recording System

Luminance Signal
Color Signal

Input

Output

Horizontal Resolution

Signal-to-Noise Ratio
Audio Section

Track

Frequency Response

Dynamic Range
Wow and Flutter

Input Sensitivity]
Impedance

Output Level/
Impedance

TV Tuner

RF Channel Output
Tape Format

:EIA standard

525 lines, 60 fields
NTSC-type color signal

:2 rotary heads, azimuth

helical scanning system

: Frequency modulation recording
: Low frequency conversion,

sub-carrier phase shift recording

: 0.5 to 2.0Vp-p,

75 Ohm unbalanced
RCA type jack

:1.0Vp-p, 75 Ohm unbalanced

RCA type lack

:Approx. 250 lines
: Better than 43dB

:1 track (Normal)

2 channels (Hi-Fl)

: 7OHZ-10kHZ

(normal in the SP mode)
20Hz-20kHz :SdB (Hi-Fl)

: Better than 80dl3 (Hi-Fi)
20.0050/0 WRMS (Hi-Fi)
:50mV/30k Ohm

unbalanced RCA type jack

:316mV/1k Ohm

unbalanced RCA type lack

:VHF input, Ch. 2-13:

75 Ohm unbalanced,
F-type connector

UHF input, Ch. 14-83:
300 Ohm balanced
CATV A-W

: Channel 3 or 4, switchable
:VHS tape

VHS Hl-FI SYSTEM

Tape Speed

Record IPIayback Time

Fast Forward / Rewind
Time
Timer

Timer Accuracy

Tape Speed Switch
(SP/LP/EP)

Channel Selection

Operating Temperature
Operating Humidity
Dimensions (W x H x D)

Weight
Power supply
Power Consumption

:SP...1-5/16/sec. (33.35mm/sec.)
LP...21/32/sec. (16.68mm/sec.)

EP...7/16/sec. (11.12mm/sec.)

:160 min. with T-IGO cassette

(SP mode)
60 min. with T-6O cassette
(SP mode)

(Time is doubled in the LP
mode and tripled in the EP
mode.)

:Approx. 6 min. with T7160

cassette

:4 programs for any channels

in a 14 day period,
Also, same time-everyday
capability 24rhour digital type

: Crystal oscillation
: Play back...Automatic

Recording...Manual

:Voltage synthesizer selector

Set...16 position UP/DOWN
Remote control unit...16 positions
direct access

:4I'F to 104F (5°C to 40°C)
: 35% to 80%
:i7-1/2X4-5/8"X15-3/8"

(443 X 118 X 390 mm)

:22lbs. (10kg)
:AC 120V, 60HZ
: 45W

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

In former video cassette recorders, the audio was
recorded on an exclusive audio track on the tape. But
since the tape speed was very slow, the frequency
response, wow and flutter, and other characteristics
were not very good and high fidelity recording and
playback become very difficult,

In the newly developed VHS Hi-Fi system, the two
channels oi stereo audio are independent and are
frequency modulated at a high frequency. Then they
are recorded on the portion of the tape where the
former video signal was recorded.

This rotating system has two exclusive audio heads
added to it. There have been also other technological
improvements made to protect the video signal from
interference caused by the audio signal.

Video Heads Audio Heads

M/ Tape

HAudio Track

R Video is recorded.
Audio is recorded
in FM iorm.

Employment of this VHS HI-Fl System has made it
possible to obtain the tollowing improvements in char,
acteristics over the former system:

Stereo recording -Standard 2-ohannel recording
Wide dynamic range - Over BOdB
Low wow and flutter - Below 0.005%

Furthermore, since monaural recording and playback is
possible, the same as in the former system,
compatibility with former video cassette recorders has
been maintained.

With this deck, the SAP channel of an M08 broadcast
can be recorded on the existing audio track. Recording
this at the same time as the two hi-fi channels makes it
possible to record three independent audio channels.