JVC GR-SX24EK - User Manual

SERVICE MANUAL
COMPACT VHS CAMCORDER
No. 86664
January 2002
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
GR-FXM383EG,SXM28EG,
SXM58EG,SXM780A
Regarding service information other than these sections, refer to the GR-FXM38EG, SXM48EG service manual (No. 86655).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
(The specifications shown pertain specifically to the model GR-SXM78EA/SXM48EA/
SXM780A/SXM480A/SXM280A/SXM180A/SX140A)
VHS
PAL
625
Camcorder
General
Format : S-VHS/VHS PAL standard
Power source : DC 11 V
(Using AC Adapter)
DC 6 V (Using battery pack)
Power consumption
Viewfinder on : 4.0 W (GR-SXM78EA/SXM48EA/SXM780A/SXM480A/
SXM280A/SXM180A only)
3.7 W (GR-SX140A only)
LCD monitor* on : 4.5 W (GR-SXM78EA/SXM48EA/SXM780A/SXM480A/
SXM280A/SXM180A only)
Video light** : 3.0 W
* Applicable models only.
** GR-SXM78EA/SXM48EA/SXM780A/SXM480A/SXM280A only.
Signal system : PAL-type
Video recording system
Luminance : FM recording
Colour : Converted sub-carrier direct recording Conforms to VHS
standard
Cassette : / cassette
Tape speed
SP : 23.39 mm/sec.
LP : 11.70 mm/sec.
Recording time (max.)
SP : 60 minutes
LP : 120 minutes
(with EC-60 cassette)
Operating
temperature : 0°C to 40°C
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C
Weight : Approx. 910 g (GR-SXM78EA/SXM48EA/SXM780A/SXM480A/
SXM280A only)
Approx. 900 g
(GR-SXM180A only)
Approx. 850 g (GR-SX140A only)
Dimensions : 200 mm x 112 mm x 118 mm
(W x H x D) (GR-SXM78EA/SXM48EA/SXM780A/SXM480A/SXM280A/
SXM180A only)
200 mm x 112 mm x 115 mm
(GR-SX140A only)
(with the LCD monitor* closed and with the viewfinder fully
tilted downward)
* Applicable models only.
Pickup : 1/6" format CCD
Lens : F1.6, f = 3.9 mm to 62.4 mm,
16:1 power zoom lens with auto iris and macro control, filter
diameter 40.5 mm
Viewfinder : Electronic viewfinder with 0.5" black/white CRT
White balance adjustment : Auto/Manual adjustment
LCD monitor : 3" diagonally measured, LCD
(Applicable models only) panel/TFT active matrix system
(GR-SXM78EA/SXM780A/SXM480A only)
2.5" diagonally measured, LCD panel/TFT active matrix system
(GR-SXM48EA/SXM280A/SXM180A only)
Speaker : Monaural
(Applicable models only)
Connectors
Video : 1 V (p-p
)
, 75 Ω unbalanced, analogue output (via Video output
connector)
Audio : 300 mV (rms), 1 kΩ analogue output
(via Audio output connector)
Digital : ø3.5 mm, 4-pole, mini-head jack
(GR-SXM78EA/SXM780A only)
S-Video : Y : 1 V (p-p
)
, 75 Ω, analogue
output
C : 0.30 V (p-p
)
, 75 Ω, analogue output
AC Adapter
Power requirement : AC 110 V — 240 V`, 50 Hz/60 Hz
Output : DC 11 V
, 1 A
Some accessories are not available in some areas. Please consult your nearest JVC
dealer for details on accessories and their availability.
Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and
specifications subject to change without notice.
Optional Accessories
• Battery Packs BN-V12U, BN-V20U, BN-V400U
• Compact S-VHS (
) Cassettes SE-C45/30
• Compact VHS (
) Cassettes EC-60/45/30
• Remote Control Unit RM-V700U
• Active Carrying Bag CB-V7U

Summary

Specifications

General Camcorder Specifications

Detailed general specifications for camcorder components like format, power, lens, and connectors.

Optional Accessories

List of optional accessories available for the camcorder.

Mechanism Check and Adjustment

Mechanism Phase Checkup and Alignment

Procedures for checking and aligning mechanism phase of the loading system.

Tape Transport System Adjustment

Back Tension and Tape Pattern

Adjusting back tension, play torque, and tape pattern for optimal performance.

A;C Head and Control Head Adjustment

Setting A/C head height/azimuth and control head phase for signal integrity.

Remarks and Maintenance

Cleaning, Lubrication, and Checkup

Guidelines for cleaning, applying oil/grease, and post-repair checks.

Jig Connector Cable Connection

Jig Connector Setup Procedure

Connecting the jig connector cable to the main board for testing and adjustment.

Electrical Adjustment Procedures

Preparation and System Connection

Pre-adjustment steps, test equipment, and service system connection.

Electronic Viewfinder Adjustments

Adjusting E. VF tilt, centering, scanning, brightness, and focus.

Technical Diagrams and Waveforms

Waveform Analysis

Reference waveforms for various ICs and system sections.

Power System Block Diagram

Overview of the camcorder's power distribution and regulation.

CPU;MDA System Block Diagram

Block diagram illustrating CPU and M.MDA interactions.

Camera and Y;C System Block Diagram

Block diagram for camera image processing and Y/C signal paths.

Monitor System Block Diagram

Block diagram detailing the monitor and E.VF signal paths.

JVC GR-SX24EK Specifications

General

Brand	JVC
Model	GR-SX24EK
Category	Camcorder
Language	English