Kenwood RD-VH7 User Manual

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eject
on/standby
mode
stereo amplifier/tuner/CD RD-VH7
standby
timer
phones
tuning
band
demo
auto
/mono
p.call enter
input
stop
multi control
609 664 J1 J5 J2 J1
J2J3J4A1631
STEREO AMPLIFIER/TUNER/CD PLAYER
RD-VH7
SERVICE MANUAL
(VH-600/700)
© 1999-6/B51-5551-00 (K/K) 3133
Knob(EJECT) *
(K29-)
Dressing panel
(A21-3760-02)
Panel
(A60-1647-11)
Insulator assy
(J02-1444-24)
Dressing panel *
(A21-)
Dressing panel
(A21-3761-02)
Indicator
(B12-0360-04)
Knob
(K29-7556-04)
Escutcheon
(B07-2452-13)
Front glass
(B10-3488-03)
Knob(POWER)
(K29-7554-04)
Power cord bushing
(J42-0083--05)
Lock terminal board
(E70-0052-05)
Screw terminal board
(E70-0111-05)
Phono jack
(E63-1082-05)
Oscillating module
(W02-1114-15)
Rectangular receptacle
(E08-0311-05)
Phono jack
(E63-1089-05)
Side plate
(A50-1326-02)
Phono jack
(E63-1088-05)
Phono jack
(E63-0164-05)
AC power cord *
(E30-)
70%
KENWOOD-Corp. certifies this equipment conforms to DHHS
Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.
DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.
In compliance with Federal Regulations, following are repro-
ductions of labels on, or inside the product relating to laser
product safety.
*Refer to parts list on page 31.
RD-VH7(K) COVER1,1P( 99.10.30 2:43 PM y[W 2
www.denom.net www.denom.net
www.denom.net
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299

Kenwood RD-VH7 Specifications

Amplifier Section

rated power output	16 W + 16 W
continuous rated power output	15 watts per channel
total harmonic distortion	0.05 % (1 kHz, 10 W, 6 Ω)
frequency response	20 Hz ~ 50 kHz, +0 dB, -3 dB
signal to noise ratio	93 dB (IHF’66)

FM Tuner Section

tuning frequency range	87.5 MHz ~ 108 MHz
usable sensitivity (MONO at 75 Ω)	1.6 µV / 14.2 dBf
total harmonic distortion (MONO at 1 kHz)	0.3 % (65.2 dBf input)
signal to noise ratio (MONO)	65 dB (40 kHz dev., 65.2 dBf input)
stereo separation (1 kHz)	38 dB

AM Tuner Section

tuning frequency range	530 kHz ~ 1700 kHz
usable sensitivity	18 µV / (500 µV/m)
signal to noise ratio	45 dB

CD Player Section

playing rotation	200 rpm ~ 500 rpm (CLV)
frequency response	4 Hz ~ 20 kHz
signal to noise ratio	More than 96 dB
total harmonic distortion	Less than 0.01 % (at 1 kHz)
channel separation	More than 92 dB (at 1 kHz)

General

power consumption	60 W
dimensions	W: 247 mm (9-3/4 in.) H: 96 mm (3-7/8 in.) D: 291 mm (11-1/2 in.)
weight	4.0 kg (8.1 lb)

Summary

Product Overview and Accessories

Reset Procedure

Details the procedure to reset the unit's microcomputer.

Disassembly and Electrical Checks

CD Mechanism Removal

Instructions for removing the CD mechanism.

Electrical Check Procedures

System Architecture

Block Diagram

Circuit Description and Operation

Test Mode Setup and Audio Adjustments

Tuner, CD, Clock, and System Tests

CD Mechanism Details

Mechanism Description and Jam Cancel

Disc Loading Procedures

Adjustment Procedures

CD Section Adjustment

Procedures for adjusting laser current and focus/tracking bias.

Schematic Diagrams

Schematic Diagram Part 1

Detailed schematic of the unit's circuitry.

Schematic Diagram Part 2

Detailed schematic of the unit's circuitry.

Schematic Diagram Part 3

Detailed schematic of the unit's circuitry.

Schematic Diagram Part 4

Detailed schematic of the unit's circuitry.

Schematic Diagram Part 5

Exploded Views

CD Mechanism Assembly

Specifications

Amplifier Specifications

Technical specifications for the amplifier section.

Tuner and CD Player Specifications

Technical specifications for tuner and CD player sections.

General Specifications

General technical specifications including dimensions and power.