JVC HR-J285EU User Manual

SERVICE MANUAL
No.82915
June 2002
HR-J282EU, HR-J283EU, HR-J285EU,
HR-J290EU, HR-J293EU, HR-J295EK, HR-J295MS,
HR-J582EU, HR-J583EU, HR-J585EU,
HR-J590EU, HR-J593EU, HR-J595EK, HR-J595MS
VIDEO CASSETTE RECORDER
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-J290EU, J293EU, J590EU and J593EU.)
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
V15
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without
notice.
GENERAL
Power : 200 V – 240 V , 50 Hz/60 Hz
Power consumption
Power on : Approx. 12 W
Standby mode : 3.0 W
Video Head system
HR-J590/J593/
J599EU
: DA4 (Double Azimuth) head helical
scan system
HR-J290/J293EU : Rotary two-head helical scan system
Tape speed
(SP) : 23.39 mm/sec
(LP)* : 11.69 mm/sec
* HR-J590/J593/J599EU only
Tape format : Tape width 1/2"
(12.7 mm high density VHS tape)
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(LP)* : 480 min. with E-240 video cassette
* HR-J590/J593/J599EU only
Rewind time : Approx. 180 sec. with E-180 cassette
Dimensions (W x H x D) : 360 mm x 94.5 mm x 270 mm
Weight : 4.0 kg
Operating temperature : 5°C to 35°C
Operating humidity : Less than 80 %
Timer : 24 hours display type
VIDEO
Signal system : PAL-type colour signal and CCIR
monochrome signal, 625 lines
50 fields
Recording Format : PAL/MESECAM
RF reception : PAL (B/G)/SECAM (B/G)
RF OUT : PAL G
RF modulator : UHF channels 22 – 68 (Adjustable)
Input level : VIDEO IN (SCART type)
1.0 Vp-p, 75 ohm, unbalanced
Output level : VIDEO OUT (SCART type)
1.0 Vp-p, 75 ohm, unbalanced
Signal-to-noise ratio : More than 43 dBm
AUDIO
Input level : AUDIO IN (SCART type)
–6.0 dBm, more than 10 kΩ
Output level
HR-J590/J593/
J599EU
: AUDIO OUT (SCART, RCA type)
–6.0 dBm, less than 1 kΩ
HR-J290/J293EU : AUDIO OUT (SCART type)
–6.0 dBm, less than 1 kΩ
Audio track
HR-J590/J593/
J599EU
: Mono track and Hi-Fi track
HR-J290/J293EU : Mono track
Audio frequency response
Normal audio : 100 Hz to 10,000 Hz
(–6/+3 dBm)
Hi-Fi audio* : 20 Hz to 20,000 Hz
(–3/+3 dBm)
* HR-J590/J593/J599EU only
Audio signal to noise ratio [HR-J590/J593/J599EU only]
Hi-Fi audio : More than 70 dB (JIS A filter)
Audio dynamic range [HR-J590/J593/J599EU only]
Hi-Fi audio : More than 85 dB (JIS A filter)
ACCESSORIES
Provided accessories : RF cable,
Infrared remote control unit,
“R3” battery x 2

JVC HR-J285EU Specifications

General

Type	VCR
Video Format	VHS
Number of Heads	4
TV System	PAL
Remote Control	Yes
Playback Speed	SP, LP
Recording Speed	SP, LP
Playback Features	Frame Advance
Inputs	Composite video, audio
Power Supply	AC 220-240V

Summary

JVC Video Cassette Recorder Specifications

General Specifications

Details on power, tape speed, format, and general operational parameters.

Audio Specifications

Technical details for audio input, output, frequency response, and noise.

Video Specifications

Information on television system, recording format, and signal levels.

Important Safety Precautions

Precautions During Servicing

Guidelines and warnings for safe servicing procedures.

Safety Check After Servicing

Insulation and Dielectric Strength Tests

Procedures for testing insulation resistance and dielectric strength.

Clearance Distance and Leakage Current Tests

Guidelines for measuring clearance and leakage current.

Proposal for Applying Short Protection

Contents of Examination and Block Diagram

Overview of IC control and system block diagram for short protection.

Service Notice on EEPROM Replacement

MP KEY Function and Initialization

Explanation of MP KEY's role in EEPROM initialization.

Service Information for EEPROM IC Setting

Remote Control Key Actions for Setting

Details on using remote control keys for EEPROM option setting.

Cabinet & Main Chassis

Service Method

General procedures for servicing the cabinet and main chassis.

Exploded Views

Diagrams showing the breakdown of chassis and mechanism components.

Packing Accessory Section

Packing and Accessory Assembly Details

Details on packing materials and included accessories.

Electrical

Adjustment Points Arrangement

Diagram indicating measurement and adjustment points in the electrical system.

Electrical Troubleshooting Guide

Power Circuit (SMPS) Troubleshooting

Diagnostic steps for power supply unit (SMPS) issues.

Servo Circuit Troubleshooting

Diagnostic steps for servo circuit problems.

Y/C Circuit Troubleshooting

Diagnostic steps for Y/C signal issues.

Tuner/IF Circuit Troubleshooting

Diagnostic steps for tuner and IF circuit problems.

Hi-Fi Circuit Troubleshooting

Diagnostic steps for Hi-Fi audio circuit issues.

Mechanism Section

Deck Mechanism Parts Locations

Identifies individual parts of the deck mechanism via top and bottom view diagrams.

Deck Mechanism Disassembly

Procedures for disassembling the deck mechanism components, including drum, chassis, and drive train.

Deck Mechanism Adjustment

Procedures for adjusting and aligning the deck mechanism, including torque and alignment checks.

Mechanism Troubleshooting Guide

Deck Mechanism Troubleshooting

Diagnostic steps for common deck mechanism failures like auto REW and loading.

Front Loading Mechanism Troubleshooting

Diagnostic steps for issues with the front loading cassette mechanism.