Kenwood KX 830 Service Manual

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KENWOOD

Hl/Fl STEREO COMPONENTS

KX-83O

Refer to the KXA1030 servIce manual as to OPERATION OF MECHANISM. DISASSEMBLY.
MECHANISM ADJUSTMENT, CLEANING, LUBRICATION. CIRCUIT DESCRIPTION and
TROUBLESHOOTING.

STE REO CASSETTE DECK

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CONTENTS

EXTERNAL VIEW ............................................................................................ .. 3
INTERNAL VIEW ................................................................................................ 4
BLOCK DIAGRAM ............................................................. 5
LEVEL DIAGRAM. s
ADJUSTMENT .................................................................................................... 7
MEASUREMENT ................................................................................................. 12
DATA ........ 14
EXPLODED VIEW ............................................................................................ 15
EXPLODED VIEw PARTS LIST .......................................................................... 13
DESTINATIONS PARTS LIST ............. II 20
PARTS LIsT ........................................................................................................ 21
PC BOARD ......................................................................................................... 22
SCHEMATIC DIAGRAM .................................................... .123
SPECIFICATIONS. .................................................................................... 24

, odIficauDn Incompongms find'cjmuils I dIfferent cDuntTieS andhregiuns, This is :
because Leschpm b1 mué ndar the basxcenditiun. This manual pmvjdes informatiqn of modification
' {and d I vE 'enée a! ' _ so aged m enLSaIId Darts;-

I DOLBY is a Trade Mark of DOLBY Laboratories, Inc,

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SPECIFICATIONS

Front Loading Stereo Cassette Deck with Dolby System

4-Track, 2-Channel Stereo/Mono Recording/Playback

AC Bias System (Bias Frequency: 85 kHz)

AC System

4.76 cm/sec (1»7/8 ips)

., Recording and Playback Head ><1
Erasing Head xl

Motor ............................................ ElectronicaIIy-Controlled DC Motor

Fast Winding Time . ,. Approx. 80 seconds with (3-60 tape

Frequency Response, ., Normal Tape: 25 Hz to 15,000 Hz (30 Hz to 13.000 Hzir3 dB)
001 Tape: 25 Hz to 17,000 Hz (30 Hz to 16,000 Hzi3 dB)
Ferri-CrO; Tape: 25 Hz to 17,000 Hz (30 Hz to 16.000 Hzi3 dBI

Signal to Noise Ratio: --------------------- Dolby ON (Over 5 kHz): 62 dB (Normal Tape), 64 dB (CrOz)
Dolby OFF: 52 dB (Normal Taps), 54 dB (002)

Harmonic Distortion ., Less than 1.3% (at 1 kHz, OVU with Normal Tape)

Wow and Flutter ....... 0,06% (WRMS)

Input Sensitivity/Impedance ........... LineX 2: 77,5 mV/IOOk ohms
DINX 1: 0.1 mV/k ohms: Europe and Scandinavia model
10.9 mV/1,5k ohms: Other Countries model
Microphones x 2' 0.19 mV/10k ohms

Output Level/Load Impedance ,. Line X 2: 775 mV (OVUI/O,5k ohms

DIN X1: 775 mV IOVUi/O 5k ohms

Headphones/1. 39 mV/8 ohms to 16 ohms

Build in Features -------------------------- Dolby Norse Reduction System with Indicator
Three Position Bias Selector INormaI-Chrome-Reserve)
Three Position Equalization Selector {Normal-Chrome-Reserve)
Input Selector
Full Auto Shut-Off Mechanism in all Modes
Memory Rewind
LED Peak and Recording Indicator
Three Digit Tape Counter
Two Large Size Illuminated VU Meters
Two Microphone Jacks, Headphone Jack
DIN Rec/RB, Connector
Power Requirements ...................... AC 120V, 60 Hz: USA and Canada Model
AC 220V, 50 Hz: Australia Model
AC 240V, 50 Hz: U.K. Model
AC 120V/220V (Switchable), 50/60 Hz: Other Countries
Power Consumption ....................... 13.0 watts
Dimensions .................................... W. 430 mm/16-15/16
H: 157 mm/6A9/16"
D: 332 mm/13»1/16
Weight .......................................... 7 5 kg, 16.5 lbs
Supplied Accessories ...................... Stereo Connection Cord x 2
Head Cleaning Kit x 1
.. Normal: TDK SD C-90
Chrome: TDK SA (3-60
Reserve: SONY DUAD 060

Type .................
Track System ,
Recording System. .
Erasing System .......
Tape Speeds ..
Heads ............

Reference Tape

KENWOOD follows a policy of continuous advancements in development. For this reason
specifications may be changed without notice,

NOTE: Dolby Is trademark of Dolby Laboratories, Inc.

KENWOOD ELECTRONICS, INC.

I 1315 E.WATSON CENTER RD. CARSON, CALIFORNIA 90248 U.S.A.
I 75 SEAVIEW DRIVE SECAUCUS, NEW JERSEY 07094 USA.

TRIO-KENWOOD ELECTRONICS N.V.
I LEUVENSESTEENWEG 184, B-1930 ZAVENTEM, BELGIUM.

TRIO-KENWOOD ELECTRONICS GmbH.
I 5056 HEUSENSTAMM, RUDOLF-BRAAS-STR. 20, WEST GERMANY.

TRIO-KENWOOD FRANCE S.A.
I 5, BOULEVARD NEY 75018 PARIS, FRANCE.

TRIO-KENWOOD (AUSTRALIA) PTY, LTD. I
I 30 WHITINC ST., ARTARMON N.S.W. 2064, AUSTRALIA.

TRIO-KENWOOD CORPORATION
I 3-6-17 AOBAIIAI, MECURO-KU, TOKYO, IAPAN.

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© 1977-11 PRINTED IN JAPAN 551-0475700(G) 3,560