Kenwood KR-A4010 User Manual

AM/FM STEREO RECEIVER
KR-A4010
SERVICE MANUAL
Panel* Metallic cabinet
(A20-) (A01-1746-01)
KENWOOD ier sipcness rnin Rasxaord
KENWOOD
© 1989-5 PRINTED IN JAPAN
B51-3894-00 (O) 3012
Front glass
(B10-1006-03)
Phone jack Knob
(E11-0162-05) = (K27-1987-04) x 2
Lock terminal board * Bindinng post
{E20-) (NO8-0128-35)
FSot* Phono jack
(J02-) x 4 (E13-0446-05)
Slide switch *
($31-2136-05)
Phono jack
(E13-0621-05)
Knob
(K29-3598-04) X4
Terminal board
(E20-0823-05)
AC outlet*
({E03-)
Slide switch
(S31-2132-05) (E30-)
Knob
(K29-3597-04)
Knob Knob
(K27-1725-04) (K29-3632-04)
Slide switch *
($31-3010-05)
Power cord bushing
(J42-0083-05)
AC power cord*
* Refer to parts list on page 38.

Kenwood KR-A4010 Specifications

Audio Specifications

rated power output	45 watts per channel
maximum continuous output power	45W + 45 W
total harmonic distortion (8 ohms)	0.1%

AM Tuner Section

tuning range	530 kHz- 1.610 kHz
usable sensitivity	10 pV (320 wV/m)
signal-to-noise ratio	50 dB

FM Tuner Section

tuning frequency range	87.5 MHz- 108 MHz
antenna impedance	300 ohms balanced & 75 ohms unbalanced
sensitivity (DIN MONO)	0.9 pV

Weight and Dimensions

weight	5.5 kg
width	449 mm
height	132 mm

Summary

Disassembly for Repair

Block Diagram

Circuit Description

Component and IC Overview

Lists and describes major components and integrated circuits for the receiver.

Microprocessor and Control Logic

Details the microprocessor, port allocation, and user interface logic.

Key ICs: PLL, FM MPX, and Amplifiers

Explains the PLL, FM MPX, and main amplifier integrated circuits.

Adjustment Procedures

FM Section Tuning Adjustments

Procedures for adjusting FM reception parameters like band edge and RF alignment.

AM Section Tuning Adjustments

Procedures for adjusting AM reception parameters like band edge and RF alignment.

Adjustment Setup and Test Equipment

Voltage Table

Schematic Diagram

Exploded View and Parts Identification

Parts List

Technical Specifications

Audio Section Specifications

Details rated power output, frequency response, and distortion for the audio section.

Tuner Section Specifications

Details tuning range, sensitivity, selectivity, and stereo performance for tuners.

General Unit Specifications

Provides power consumption, physical dimensions, and weight of the unit.