EasyManua.ls Logo

JVC HR-J677MS User Manual

JVC HR-J677MS
136 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
SERVICE MANUAL
No. 82811
July 2000
HR-J271MS/J471MS/J677MS/J777MS
SPECIFICATIONS
(The specifications shown pertain specifically to the model HR-J777MS/J677MS)
VIDEO CASSETTE RECORDER
Printed in Japan
VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION
S40894
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
HR-J271MS/J471MS/J677MS/J777MS
No. 82811
PAL NTSC
TM
TM
SP/LP/EP
DISLAY
PR
COLOUR SYSTEM
REC LINK
VIDEO
(
MONO
)
L–AUDIO–R
STANDBY/ON
REVIEW
SP
+
8
4
0
6
15dB
NORM
MENU
123
456
7
89
0
1
O
K
VCR
CABLE/
DVD/SAT
TV
2
4
EXPRESS
3
PROG
30 SEC
TV PR –
TV PR +
+
TV
TV
E
N
T
E
R
/
E
N
T
R
E
E
PR
DATE
STOP
FIN
START
DEBUT
0000
AUX
DAILY/QTDN.
VPS/PDC
WEEKLY/HEBDO
AUDIO
TV/VCR
GENERAL
Power requirement
Rating : AC 110 V – 240 V`, 50/60 Hz
Operating : AC 90 V – 260 V`, 50/60 Hz
Power consumption : 19 W
Temperature
Operating : 5°C to 40°C
Storage : –20°C to 60°C
Operating position : Horizontal only
Dimensions (WxHxD) : 400 mm x 94 mm x 278 mm
Weight : 3.3 kg
Format : VHS standard
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(PAL/MESECAM)
: 160 min. with T-160 video cassette
(NTSC)
(LP) : 480 min. with E-240 video cassette
(PAL/MESECAM)
(EP) : 480 min. with T-160 video cassette
(NTSC)
VIDEO/AUDIO
Signal system : PAL-type colour signal and
CCIR monochrome signal,
625 lines 50 fields
: NTSC colour and EIA
monochrome signals,
525 lines/60 fields
Recording system : DA-4 (Double Azimuth)
head helical scan system
Signal-to-noise ratio : 45 dB
Horizontal resolution : 250 lines (PAL/MESECAM)
: 220 lines (NTSC)
Frequency range : 70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output : RCA connectors (IN x 2, OUT x 1)
TUNER/TIMER
TV channel storage
capacity : 99 positions (+AUX position)
Tuning system : Frequency synthesized tuner
Channel coverage : VHF
(Low) 42 MHz – 175 MHz
(High)175 MHz – 470 MHz
UHF
470 MHz – 870 MHz
Aerial output : UHF channels (Adjustable
E28 – E60)
Memory backup time : Approx. 6 months
Estimated figure based on
supplied fresh battery; actual
performance may differ.
ACCESSORIES
Provided accessories : RF cable,
Infrared remote control unit,
"R6/UM-3" battery x 2,
Lithium battery CR2025,
Conversion plug*
*Not provided in certain areas.
www.freeservicemanuals.info
4/5/2017
Digitized in Heiloo Netherland

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the JVC HR-J677MS and is the answer not in the manual?

JVC HR-J677MS Specifications

General IconGeneral
TypeVCR
Playback Head4-Head
Signal-to-Noise Ratio45 dB
Timer RecordingYes
Remote ControlYes
Hi-Fi StereoYes
TunerYes
Power SupplyAC 120V, 60Hz
InputsComposite Video, Audio
OutputsComposite Video, Audio

Summary

Important Safety Precautions

Fuse, Wiring, and Component Safety

Cautions regarding fuse replacement, specified wiring, and insulating materials for safety.

Crimp Connector and CRT Safety Procedures

Procedure for replacing crimp connectors and safety for CRT products regarding X-ray emission.

Safety Check after Servicing

Insulation, Dielectric, Clearance, Leakage, and Grounding Tests

Essential safety tests including resistance, strength, clearance, leakage, and grounding.

SECTION 1 DISASSEMBLY

Disassembly/Assembly Method

Steps and methods for disassembling and reassembling unit components.

SECTION 2 MECHANISM ADJUSTMENT

Manually Removing Cassette Tape

Procedure for manually removing a cassette tape in case of electrical failure.

REPLACEMENT OF MAJOR PARTS

Pre-Disassembly Phase Matching and Mode Setup

Importance of phase matching and setting mechanism mode before part replacement.

COMPATIBILITY ADJUSTMENT

FM Waveform Linearity Adjustment

Procedure for adjusting FM waveform linearity using roller driver.

Audio Control Head Adjustment

Adjusting audio control head height, tilt, phase using positioning tool.

Standard Tracking Preset and Tension Pole Position Adjustments

Procedures for adjusting tracking preset and tension pole position.

SECTION 3 ELECTRICAL ADJUSTMENT

Electrical Adjustment Precautions and Tools

Precautions, required equipment, adjustment tools, and switch settings for electrical adjustments.

SERVO CIRCUIT

Switching Point and Slow Tracking Adjustments

Procedures for adjusting switching point and slow tracking using test signals.

VIDEO CIRCUIT

AUTO PICTURE Initial Setting

Procedure for setting the AUTO PICTURE function for optimal video.

SYSCON CIRCUIT

Timer Clock Adjustment

Procedure for adjusting the timer clock frequency using a frequency counter.

SAFETY FIRST

General Cautions and Warnings

Important warnings regarding usage, voltage, environment, and handling.

Lithium Battery Precautions

Precautions for handling, replacing, and disposing of the lithium battery.

INSTALLING YOUR NEW RECORDER

Basic Connections

Steps for connecting the recorder to TV and mains power.

Connecting Recorder to TV

Methods for connecting the recorder to a TV via RF or AV inputs.

Connecting Recorder to Mains

Procedure for plugging the recorder into a mains outlet.

INITIAL SETTINGS

Video Channel Set Procedure

Steps to set the video channel for RF connection, including TV system selection.

TV System Selection

Procedure to select the appropriate TV system for optimal signal reception.

INITIAL SETTINGS (Continued)

Set Video Channel Procedure

Steps to set the video channel for AV connection.

Select TV System and Start Auto Channel Set

Procedures to select TV system and initiate automatic channel scanning.

Install/Remove Lithium Battery

Instructions for installing and removing the unit's lithium battery.

PLAYBACK

Basic Playback Procedure

Steps for loading a cassette, starting, and stopping playback.

Clean Video Heads

Instructions for cleaning video heads using a dry cleaning cassette.

PLAYBACK (Continued)

Manual Tracking Control

Procedure for overriding automatic tracking and adjusting manually.

PLAYBACK (Continued)

Picture Control Settings

Adjusting playback picture quality using modes like AUTO, EDIT, SOFT, SHARP.

Soundtrack Selection

Selecting and Playing Back Soundtracks

Selecting and playing back available soundtracks (HI-FI L, HI-FI R, NORM).

RECORDING

Basic Recording Procedure

Steps for loading cassette, choosing program, setting speed, starting, pausing, and stopping recording.

RECORDING (Continued)

Instant Timer Recording (ITR)

Easy method to record for a set duration, with automatic shut-off.

B.E.S.T. Picture System

Configure B.E.S.T. Picture System

Setting the B.E.S.T. system to ON or OFF for optimal recording/playback quality.

Recording

Start Recording and Notes

Procedure for starting recording, including B.E.S.T. system assessment and notes.

Playback

Start Playback and Notes

Procedure for starting playback and notes on B.E.S.T. system operation.

TIMER RECORDING (Continued)

G-CODE/SHOWVIEW System Setup and Guide Program Number

Setting up G-CODE/SHOWVIEW and entering guide program numbers for timer recording.

Enter Receiving Channel Position Number

Inputting the channel position where the guide program number broadcast is received.

G-CODE/SHOWVIEW Programming Steps

Steps for entering G-CODE number, setting tape speed for timer programming.

TIMER RECORDING (Continued)

Engage Recorder Timer Mode

Procedure for engaging the recorder's timer mode and disengaging it.

Express Timer Programming

Express Timer Programming Steps

Step-by-step guide to programming timers for express recording.

Express Timer Programming (Continued)

Auto SP→LP Timer

Auto Timer

Automatic Satellite Program Recording

SPECIAL FEATURES

Multi-brand Remote Control

EDITING

Edit From A Camcorder

Multi-System Compatibility Information

TUNER SET

Manual Channel Set

Fine-Tuning Channels

TV System Selection

TROUBLESHOOTING

Power, Tape Transport, and Playback Issues

Troubleshooting common problems related to power, tape mechanism, and playback.

TROUBLESHOOTING (Continued)

Recording Issues

Troubleshooting steps for recording start, broadcast reception, editing, and camcorder issues.

Timer Recording Issues

Troubleshooting steps for timer recording, programming, and G-CODE system problems.

TROUBLESHOOTING (Continued)

SECTION 4 CHARTS AND DIAGRAMS

BOARD INTERCONNECTIONS [HR-J271MS, HR-J471MS]

VIDEO/AUDIO SCHEMATIC DIAGRAM [HR-J271MS, HR-J471MS]

SYSTEM CONTROL SCHEMATIC DIAGRAM [HR-J271MS, HR-J471MS]

SWITCHING REGULATOR SCHEMATIC DIAGRAM [HR-J677MS, HR-J777MS]

TUNER SCHEMATIC DIAGRAM [HR-J677MS, HR-J777MS]

DISPLAY AND MINI OPE SCHEMATIC DIAGRAMS [HR-J677MS, HR-J777MS]

BS CONNECTION AND LITHIUM BATTERY SCHEMATIC DIAGRAMS [HR-J271MS, HR-J471MS]

TERMINAL SCHEMATIC DIAGRAM [HR-J271MS, HR-J471MS]

BOARD INTERCONNECTIONS [HR-J677MS, HR-J777MS]

VIDEO/AUDIO SCHEMATIC DIAGRAM [HR-J677MS, HR-J777MS]

ON SCREEN SCHEMATIC DIAGRAM [HR-J677MS, HR-J777MS]

SYSTEM CONTROL AND LITHIUM BATTERY SCHEMATIC DIAGRAMS [HR-J677MS, HR-J777MS]

TERMINAL AND R.PAUSE SCHEMATIC DIAGRAMS [HR-J677MS, HR-J777MS]

DEMODULATOR CIRCUIT BOARD [HR-J777MS]

WAVEFORMS [HR-J271MS, HR-J471MS]

CIRCUIT BOARDS LAYOUT

COMPONENT PARTS LOCATION GUIDE

COMPONENT PARTS LOCATION GUIDE (Continued)

DEMODULATOR CIRCUIT BOARD

FDP GRID ASSIGNMENT AND CONNECTION

REMOTE CONTROL SCHEMATIC DIAGRAM

VOLTAGE CHARTS [HR-J271MS, HR-J471MS]

VOLTAGE CHARTS [HR-J677MS, HR-J777MS]

SYSTEM CONTROL BLOCK DIAGRAM

VIDEO BLOCK DIAGRAM

AUDIO BLOCK DIAGRAM [HR-J271MS, HR-J471MS]

AUDIO BLOCK DIAGRAM [HR-J677MS, HR-J777MS]

Related product manuals