JVC GR-DVM55KR, GR-DVM75KR Service Manual

SERVICE MANUAL

DIGITAL VIDEO CAMERA

GR-DVM55KR,DVM75KR

Regarding service information other than these sections, refer to the GR-DVM55U/DVM75U service manual (No. 86615).
Also, be sure to note important safety precautions provided in the service manual.

SPECIFICATIONS

For General
Power supply : DC 11.0 V } (Using AC Adapter)

Power consumption

LCD monitor off, viewfinder on : Approx. 4.4 W (GR-DVM75), Approx. 4.0 W (GR-DVM55)

LCD monitor on, viewfinder off : Approx. 5.2 W (GR-DVM75), Approx. 4.8 W (GR-DVM55)
Dimensions (W x H x D) : 97 mm x 120 mm x 51 mm (3-7/8" x 4-3/4" x 2-1/16")
(with the LCD monitor closed and the viewfinder pushed back in)
Weight : Approx. 500 g (1.1 lbs) (GR-DVM75)

Operating temperature : 0°C to 40°C (32°F to 104°F)
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C (–4°F to 122°F)
Pickup : 1/4" CCD
Lens : F 1.8, f = 3.6 mm to 36 mm, 10:1 power zoom lens
Filter diameter : ø27 mm
LCD monitor : 2.5" diagonally measured, LCD panel/TFT active matrix system
Viewfinder : Electronic viewfinder with 0.44" colour LCD
Speaker : Monaural

For Digital Video Camera
Format : DV format (SD mode)

Signal format : NTSC standard
Recording/Playback format : Video: Digital component recording

Cassette : Mini DV cassette
Tape speed : SP: 18.8 mm/s

Maximum recording time : SP: 80 min.
(using 80 min. cassette) LP: 120 min.

For Digital Still Camera (GR-DVM75 only)
Storage media : SD Memroy Card/MultiMediaCard

Compression system : Still image : JPEG (compatible)

File size : 2 modes (XGA: 1024 x 768 pixels/VGA: 640 x 480 pixels)
Picture quality : 2 modes (FINE/STANDARD)
Approximate number of storable images
(with the provided memory card [8 MB], with Sound Effects pre-stored)

FINE : 40 (VGA), 20 (XGA)

STANDARD : 130 (VGA), 60 (XGA)
(with an optional memory card [16 MB])

FINE : 100 (VGA), 40 (XGA)

STANDARD : 290 (VGA), 140 (XGA)
(with an optional memory card [32 MB])

FINE : 210 (VGA), 90 (XGA)

STANDARD : 610 (VGA), 290 (XGA)
(with an optional memory card [64 MB])

FINE : 430 (VGA), 190 (XGA)

STANDARD : 1230 (VGA), 600 (XGA)

DC 7.2 V } (Using battery pack)

Approx. 470 g (1.1 lbs) (GR-DVM55)

: Audio: PCM digital recording, 32 kHz 4-channel (12-bit),

48 kHz 2-channel (16-bit)

LP: 12.5 mm/s

Moving image : MPEG4 (compatible)

(The specifications shown pertain specifically to the model GR-DVM55U/DVM75U)

Camcorder

For Connectors
AV

Video output : 1 V (p-p), 75 Ω, analog
Video input (GR-DVM75 only) : 0.8 V (p-p) – 1.2 V (p-p), 75 Ω, analog
Audio output : 300 mV (rms), 1 kΩ, analog, stereo
Audio input (GR-DVM75 only) : 300 mV (rms), 50 kΩ, analog, stereo
Headphone output (GR-DVM75 only)

DV

Input/output : 4-pin, IEEE 1394 compliant

: Stereo

AC adapter AP-V10U

Power requirement

U.S.A. and Canada : AC 120 V`, 60 Hz

Other countries : AC 110 V to 240 V`, 50 Hz/60 Hz
Output : DC 11 V }, 1 A
Dimensions (W x H x D) : 59 mm x 31 mm x 84 mm (2-3/8" x 1-1/4" x 3-5/16")
Weight : Approx. 130 g (0.29 lbs)

Jack Box

For General
Dimensions (W x H x D) : 52 mm x 22 mm x 73 mm (2-1/16" x 7/8" x 2-7/8")

Weight : Approx. 35 g (0.78 lbs)

For Connectors
USB (GR-DVM75 only) : Type B

EDIT (GR-DVM75 only) : ø3.5 mm, 2-pole
S-Video

Output : Y : 1 V (p-p), 75 Ω, analog

Input (GR-DVM75 only) : Y : 0.8 V (p-p) – 1.2 V (p-p), 75 Ω, analog

JLIP (GR-DVM55 only) : ø3.5 mm, 4-pole
PC (DIGITAL PHOTO)
(GR-DVM55 only) : ø2.5 mm, 3-pole

Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and specifications subject
to change without notice.

C : 0.29 V (p-p), 75 Ω, analog

C : 0.2 V (p-p) – 0.4 V (p-p), 75 Ω, analog

This service manual is printed on 100% recycled paper.

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

No. 86644

May 2001

TABLE OF CONTENTS

DIFFERENT TABLE .................................................................................................................................................................. 1

4. CHARTS AND DIAGRAMS (4-1 to 4-12)

4.1 MAIN CIRCUIT BOARD [GR-DVM55KR] ..................................................................................................................... 4-1

4.2 MAIN CIRCUIT BOARD [GR-DVM75KR] ..................................................................................................................... 4-7

5. PARTS LIST (5-1 to 5-5)

5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ........................................................................................................ 5-1

5.2 FINAL ASSEMBLY <M2> ............................................................................................................................................. 5-3

The following table indicate main different points between models GR-DVM55U, GR-DVM55KR, GR-DVM75U and GR-DVM75KR.

. MODEL

ITEM

AC ADAPTER AP-V10U AP-V10KR AP-V10U AP-V10KR

T

he following table indicate different parts number between models GR-DVM55U, GR-DVM55KR, GR-DVM75U and GR-DVM75KR.

GR-DVM55U GR-DVM55KR GR-DVM75U GR-DVM75KR

PACKING AND ACCESSORY ASSEMBLY <M1> Note: As for IB (INSTRUCTIONS), refer to sec.5.

REF. MODEL

!

NO. ITEM

8 Q.CARD(JCA) YU10350 — YU10350 —
9 WARRANTY INF. BT-51005-4 — BT-51005-4 —
10 REGIST.CARD BT-51020-2 — BT-51020-2 —

! 12 AC ADAPTER LY20739-001A LY20688-010A LY20739-001A LY20688-010A

24 CORE FILTER QQR0491-002 QQR0490-002 — QQR0490-002

! 28 POWER CORD — QMPS130-190-JC — QMPS130-190-JC

29 WARRANTY CARD — — — BT-56010-1

GR-DVM55U GR-DVM55KR GR-DVM75U GR-DVM75KR

FINAL ASSEMBLY <M2>

REF. MODEL

!

NO. ITEM

188 LABEL(EMC) — LY43226-002A — LY43226-001A
229 SCREW QYSPSGT1735Z QYSPSGT1735Z * QYSPSGT1730Z
231 SCREW — — QYSPSGT1735Z * QYSPSGT1730Z

GR-DVM55U GR-DVM55KR GR-DVM75U GR-DVM75KR

MAIN BOARD ASSEMBLY <01>

REF. MODEL

!

NO. ITEM

PW MAIN BOARD ASSY YB10318A-01 * YB10318A-02 YB10319A-01 *YB10319A-02
C3050 CAPACITOR — * NCBA1CK-103W — * NCBA1CK-103W
SD3 SHIELD SHEET — * LY43181-001A — * LY43181-001A
OT7 SPACER(A) — * LY30029-0Q4A — * LY30029-0Q3A
OT8 SPACER(A) — — — * LY30029-0Q1A

GR-DVM55U GR-DVM55KR GR-DVM75U GR-DVM75KR

JACK BOARD ASSEMBLY <09>

REF. MODEL

!

NO. ITEM

PW1 JACK BOARD ASSY YB10323A1 YB10323A1 YB10323B1
Q2801 TRANSISTOR — — — 2SD1979/S/-X
R2801 MG RESISTOR — — — NRSA63J-103X
R2805 MG RESISTOR — — — NRSA63J-0R0X
C2801 CAPACITOR — — — NCB31CK-683X
C2803 CAPACITOR — — — NCB31EK-153X

GR-DVM55U GR-DVM55KR GR-DVM75U GR-DVM75KR

Notes : Mark is same as left.

Mark — is not used.
Mark* reference model was also changed.

1