JVC HR-S3901U User Manual

SERVICE MANUAL
No.82912
March 2002
HR-S2901U, HR-S2911U(C),
HR-S3901U,
HR-S3911U, HR-S3911U(C)
Regarding service information other than these sections, refer to the HR-S5901U service manual (No.82911).
Also, be sure to note important safety precautions provided in the service manual.
VIDEO CASSETTE RECORDER
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-S3901U.)
V15S0/S1
REW
FF
REC LINK
24HR QUICK
PROGRAM
POWER
DISPLAY
SP/EP
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without
notice.
GENERAL
Power requirement : AC 120 V d , 60 Hz
Power consumption
Power on : 17 W
Power off : 1.5 W
Temperature
Operating : 5°C to 40°C (41°F to 104°F)
Storage : –20°C to 60°C (–4°F to140°F)
Operating position : Horizontal only
Dimensions (W x H x D) : 435 mm x 94 mm x 247 mm
(17-3/16" x 3-3/4" x 9-3/4")
Weight : 2.8 kg (6.2 lbs)
Format : S-VHS/VHS NTSC standard
Maximum recording time
SP : 210 min. with ST-210 video cassette
EP : 630 min. with ST-210 video cassette
VIDEO/AUDIO
Signal system : NTSC-type color signal and EIA
monochrome signal, 525 lines/
60 fields
Recording/Playback
system
: DA-4 (Double Azimuth) head helical
scan system
Signal-to-noise ratio : 45 dB
Horizontal resolution
VHS : 230 lines
S-VHS : 400 lines
Frequency range
Normal audio : 70 Hz to 10,000 Hz
Hi-Fi audio : 20 Hz to 20,000 Hz
Input/Output : RCA connectors (IN x 2, OUT x 1)
S-video connectors (IN x 1, OUT x 1)
TUNER
Tuning system : Frequency-synthesized tuner
Channel coverage
VHF : Channels 2–13
UHF : Channels 14–69
CATV : 113 Channels
RF output : Channel 3 or 4 (switchable; preset to
Channel 3 when shipped) 75 ohms,
unbalanced
TIMER
Clock reference : Quartz
Program capacity : 1-year programable timer/8 programs
Memory backup for timer is not supported.
ACCESSORIES
Provided accessories : Infrared remote control unit,
“AA” battery x 2,
S-video cable (4-pin),
RF cable (F-type)

JVC HR-S3901U Specifications

General

Brand	JVC
Model	HR-S3901U
Category	VCR
Language	English

Summary

JVC Service Manual Specifications

General Specifications

Details on power, temperature, dimensions, weight, and format.

Important Safety Precautions

Precautions During Servicing

Key safety guidelines for handling and servicing the product.

Adjustment Procedures

Pre-Adjustment Checks

Mechanism Compatibility Adjustments

Tension pole position and FM waveform linearity adjustments.

Electrical Adjustments

Detailed procedures for servo, video, and audio circuit adjustments.

Charts and Diagrams

Board Interconnections Diagram

Main Schematic Diagrams

Schematic diagrams for Main (Video/Audio), S-Sub, SYSCON, SW.REG, Tuner, FMA/DEMOD, Front, Terminal, 2D Digital.

System Control Block Diagram

Block diagram illustrating the system control architecture and signal flow.