Kenwood VR-405 Service Manual

AUDIO
VIDEO
SURROUND
RECEIVER
Y
KRF-V4530D
KENWOOD
KRF-V5030D/V5030DE/V5030D-S
KRF-V6030D/V6030DE/V6030D-S
VR-405/406/414
SERVICE MANUAL eens
Note: On circuit description, please refer to KRF-V7030D service manual(B51-5598-00).
Knob Front glass Panel
(K29-7688-03) (B10-3550-02) ; (A60-1757-11)
VOLUME CONTROL
Sragper INPUT SELECTOR
170
SETUP PUTOOE ——_OIMER MONITOR
a
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SOUND LISTEN MODE SOURCE DIRECT
r y ‘AUTO EMORY
CICICS |
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fn
6CHINPUT
—————————_E
_—CVV/'aVn—_—_—_—
FOR
EXTRA
DIGITAL
AUDIO
FORMAT
Knob Knob
(K27-2385-04)
(K29-7688-03)
Knob
Knob
Knob
Phone jack Knob (K29-7676-12) (K29-7682-14) (K29-7679-04)
(E11-0272-05) (K29-7685-03)
Pin jack Pin jack Optical receiving module Power cord bushing AC power cord
(E63-1138-05) (E63-1080-05) (W02-2716-05) (J42-0083-05) (E30-2942-05)
Pin jack Pin jack Miniature phone jack Metallic cabinet
(E63-1139-05) (E63-1141-05) (E11-0293-05) (A01-3734-01)
FRONT SPEAKERS CENTER SPEAKERS
REC )6 - 160)[BIUE} (8 - 160) GREEN
FRONT SPEAKERS
(8-160)
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PAWS ma Cy
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aE SSVIES SD 4 A erm O bu
SURROUND SPEAKERS
MomTapet woe SUS WOOFER PRE OUT
Lock terminal board Pin jack Pin jack Screw terminal board Lock terminal board (09-0 140-08)
(E20-0321-05) (E63-1143-05) (E63-1146-05) (E70-0049-05) (E70-0057-05)
70%
Taw
IIlust. is KRF-V6030D-S(M).

Kenwood VR-405 Specifications

General

Channels	5.1
Power Output	100W per channel
Impedance	8 Ohms
Surround Sound Decoding	Dolby Digital, DTS
Tuning Range	AM/FM
Input Sensitivity	200 mV
Frequency Response	20Hz - 20kHz
Digital Inputs	1 x coaxial, 1 x optical
Output	1
Video Connections	Composite
Inputs	6

Summary

CONTROLS

Receiver Unit Controls Overview

BLOCK DIAGRAM

Signal Flow and Power Paths Overview

CIRCUIT DESCRIPTION

Microprocessor Pin Descriptions

Lists and describes the pins of the main microprocessor IC1.

LED and Control Pin Functions

ADJUSTMENT PROCEDURES

FM Section Tuning and Discriminator Adjustments

Outlines procedures for adjusting FM discriminator and tuning levels.

FM Section Distortion Adjustments

Details the process for adjusting distortion levels in the FM section.

TUNER UNIT CIRCUITRY

FM Front-End and Tuner Circuit Details

Details the FM front-end, RF amplifier, and mixer stages.

Tuner Unit Destination-Specific Settings

PARTS LIST - POWER AMPLIFIER

Power Amplifier Components List

Lists parts related to the power amplifier stages, including ICs and transistors.

EXPLODED VIEW

Exploded View of Receiver Unit Assembly

PARTS LIST BY MODEL

Parts List for KRF-V6030D/VR-406 Models

Parts List for KRF-V5030D/VR-405/VR-414 Models

SPECIFICATIONS

Audio Section Specifications (U.S.A./Canada)

Details power output, sensitivity, and tone control for U.S. models.

FM/AM Tuner and Digital Audio Specs

General and International Specifications