JVC GR-DVX48A, GR-DVX48A-S, GR-DVX48EA, GR-DVX49A, GR-DVX78A Service Manual

SERVICE MANUAL

DIGITAL VIDEO CAMERA

GR-DVX48A/A-S/EA,DVX49A,DVX78A/A-S/EA

Regarding service information other than these sections, refer to the GR-DVX44EG,DVX88EG service manual (No. 86617).
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 :
LCD monitor on, viewfinder off :

Dimensions (W x H x D) : 51 mm x 120 mm x 97 mm

Weight : Approx. 500 g (GR-DVX78)

Operating temperature : 0°C to 40°C
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C
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 :
Viewfinder : Electronic viewfinder with 0.44" colour LCD
Speaker : Monaural

For Digital Video Camera

Format : DV format (SD mode)
Signal format : PAL 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-DVX78 only)

Storage media : SD Memory 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)

(The specifications shown pertain specifically to the model GR-DVX78A/DVX49A/DVX48A/
DVX78EA/DVX48EA/DVX78SH/DVX48SH)

Camcorder

DC 7.2 V } (Using battery pack)

Approx. 4.4 W (GR-DVX78), Approx. 4.0 W (GR-DVX49/DVX48)
Approx. 5.2 W (GR-DVX78), Approx. 4.8 W (GR-DVX49/DVX48)

(with the LCD monitor closed and the viewfinder pushed back in)

Approx. 470 g (GR-DVX49/DVX48)

2.5" diagonally measured, LCD panel/TFT active matrix system

: 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)

For Connectors

AV

Video output : 1 V (p-p), 75 Ω, analogue
Video input (GR-DVX78 only) : 0.8 V (p-p) – 1.2 V (p-p), 75 Ω, analogue
Audio output : 300 mV (rms), 1 kΩ, analogue, stereo
Audio input (GR-DVX78 only) : 300 mV (rms), 50 kΩ, analogue, stereo
Headphone output
(GR-DVX78 only) : Stereo

DV

Input/output : 4-pin, IEEE 1394 compliant

AC Adapter AP-V10A, AP-V10EA or AP-V10ED

Power requirement : 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
Weight : Approx. 140 g (not including Power Cord)

Jack Box

For General

Dimensions (W x H x D) : 52 mm x 22 mm x 73 mm
Weight : Approx. 35

For Connectors

USB (GR-DVX78 only) : Type B
EDIT (GR-DVX78 only) : ø3.5 mm, 2-pole
S-Video

Output : Y : 1 V (p-p), 75 Ω, analogue

Input (GR-DVX78 only) : Y : 0.8 V (p-p) – 1.2 V (p-p), 75 Ω, analogue

JLIP (GR-DVX49/DVX48 only) : ø3.5 mm, 4-pole
PC (DIGITAL PHOTO)
(GR-DVX49/DVX48 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, analogue

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

This service manual is printed on 100% recycled paper.

COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.

No. 86643

May 2001

TABLE OF CONTENTS

DIFFERENT TABLE ........................................................................................................................................................... 1 to 3

4. CHARTS AND DIAGRAMS (4-1 to 4-2)

4.1 JUNCTION CIRCUIT BOARD....................................................................................................................................... 4-1

4.2 JACK CIRCUIT BOARD ................................................................................................................................................ 4-2

5. PARTS LIST (5-1 to 5-12)

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

5.2 ELECTRICAL PARTS LIST (GR-DVX78A/A-S/EA) ...................................................................................................... 5-3

MAIN BOARD ASSEMBLY <01>...................................................................................................................................... 5-3

The following table indicate main different points between models GR-DVX44EG, GR-DVX48A, GR-DVX48A-S, GR-DVX48EA
and GR-DVX49A.

ITEM

AC ADAPTER AP-V10EG AP-V10A AP-V10A-S AP-V10EA AP-V10A

MODEL

The following table indicate main different points between models GR-DVX88EG, GR-DVX78A, GR-DVX78A-S and GR-DVX78EA.

ITEM

AC ADAPTER AP-V10EG AP-V10A AP-V10A-S AP-V10EA

MODEL

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

The following table indicate different parts number between models GR-DVX44EG, GR-DVX48A, GR-DVX48A-S, GR-DVX48EA
and GR-DVX49A.

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

REF. MODEL

!

NO. ITEM

1 PACKING CASE LY32032-008A LY32032-010A LY31717-023A
9 WARRANTY CARD BT-54013-2 — — BT-56001-2 —

! 12 AC ADAPTER LY20688-013A LY20688-003A LY20688-014A LY20688-007A LY20688-003A

14 JACK BOX LY32142-002A *LY32142-002B * * *

! 28 POWER CORD QMPL120-190-JR QMPS110-190-JR QMPH020-190-JR QMPL120-190-JR

29 ADAPTER PLUG QAM0302-001 — — — —
31 SER.NET CARD — — — BT-56002-2 —
33 SHEET(CON.PLUG) — LYT0609-001A — LYT0609-001A

! 34 CONVERSION PLUG — PEMC1012-02 PEMC1012 — PEMC1012-02

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

FINAL ASSEMBLY <M2>

REF. MODEL

!

NO. ITEM

101 LOWER CASE LY10287-002A *LY10287-002B * * *
191 PLATE LY42906-004A LY42906-008A LY42906-009A
215 STICKER LY43130-006A LY43130-007A
216 SPACER(A) LY30029-0H7B *LY30029-0H7C * * *
220 FRONT COVER ASSY LY20731-004B LY20731-002C LY20731-007B
220H COVER(AV) LY32136-004A LY32136-007A
221 SCREW QYSPSGT1740Z
229 SCREW QYSPSGT1735Z *

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

QYSPSGT1740R

QYSPSGT1730Z

* * *

Notes : Mark is same as left.

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

1

MAIN BOARD ASSEMBLY <01>

REF. MODEL

!

NO. ITEM

IC1401 CSP IC ASSY YQ44887A *YQ44888A * * *
R1413 MG RESISTOR — *NRSA6AJ-331W * * *
R6014 MG RESISTOR — *NRSA63J-0R0X * * *
C3001 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3005 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3008 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3035 CAPACITOR NDCA1HJ-270W *NDCA1HJ-180W * * *
C3501 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3502 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3503 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C3701 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4305 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4307 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4310 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4315 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4324 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4331 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C6003 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
OT7 SPACER(A) — *LY30029-0Q4A * * *

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

MDA BOARD ASSEMBLY <02>

REF. MODEL

!

NO. ITEM

C4803 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4851 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C4861 T CAPACITOR NCBA1HK-102W *
C4862 T CAPACITOR NCBA1HK-102W *
C4864 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

NCBA1CK-103W
NCBA1CK-103W

* * *
* * *

JUNCTION BOARD ASSEMBLY <06>

REF. MODEL

!

NO. ITEM

PW2 JUNCTION BOARD ASSY YB10323B2-01 *YB10323B2-02

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

AUDIO BOARD ASSEMBLY <08>

REF. MODEL

!

NO. ITEM

C2108 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C2207 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C2208 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C2211 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C2214 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *
C2402 T CAPACITOR NBE20JM-106X *NBE80JM-106X * * *

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

JACK BOARD ASSEMBLY <09>

REF. MODEL

!

NO. ITEM

PW1 JACK BOARD ASSY YB10323C1 *YB10323C1-01

GR-DVX44EG GR-DVX48A GR-DVX48A-S GR-DVX48EA GR-DVX49A

The following table indicate different parts number between models GR-DVX88EG, GR-DVX78A, GR-DVX78A-S and GR-DVX78EA.

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

REF. MODEL

!

NO. ITEM

1 PACKING CASE LY32032-007A LY32032-009A LY32032-022A
4 POLY BAG QPA02003006 QPA02003506 QPA02003006
9 WARRANTY CARD BT-54013-2 ——BT-56001-2
11 CD ROM LY32210-004A *LY32210-004B * *

! 12 AC ADAPTER LY20688-013A LY20688-003A LY20688-014A LY20688-007A

14 JACK BOX LY32142-001A *LY32142-001B * *

! 28 POWER CORD QMPL120-190-JR QMPS110-190-JR QMPH020-190-JR

29 ADAPTER PLUG QAM0302-001 ———
31 SER.NET CARD ———BT-56002-2
32 CORE FILTER — QQR0918-001
33 SHEET(CON.PLUG) — LYT0609-001A —

! 34 CONVERSION PLUG — PEMC1012-02 PEMC1012 —

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

Notes : Mark is same as left.

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

2

FINAL ASSEMBLY <M2>

REF. MODEL

!

NO. ITEM

! 101 LOWER CASE ASSY LY20727-001A *LY20727-001B * *

191 PLATE LY42906-003A LY42906-007A
215 STICKER LY43130-002A LY43130-004A
216 SPACER(A) LY30029-0H7B *LY30029-0H7C * *
220 FRONT COVER ASSY LY20731-003B LY20731-001D
220H COVER(AV) LY32136-003A LY32136-006A
221 SCREW QYSPSGT1740Z
229 SCREW QYSPSGT1735Z *
231 SCREW QYSPSGT1735Z *

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

QYSPSGT1740R

QYSPSGT1730Z
QYSPSGT1730Z

* *
* *

MAIN BOARD ASSEMBLY <01>

REF. MODEL

!

NO. ITEM

PW MAIN BOARD ASSY YB10319B-02 YB10319C-02

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

MDA BOARD ASSEMBLY <02>

REF. MODEL

!

NO. ITEM

IC4804 IC UPC358G2/5/-W *NJM3414AG * *
R4836 MG RESISTOR NRSA6AJ-102W *
C4803 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C4851 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C4861 CAPACITOR NCBA1HK-102W *
C4862 CAPACITOR NCBA1HK-102W *
C4864 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

NRSA6AJ-0R0W

NCBA1CK-103W
NCBA1CK-103W

* *

* *
* *

JUNCTION BOARD ASSEMBLY <06>

REF. MODEL

!

NO. ITEM

PW2 JUNCTION BOARD ASSY YB10323A2-01 *YB10323C2-02 * *
D8502 ZENER DIODE — *UMZ6.8EN * *
C8502 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

AUDIO BOARD ASSEMBLY <08>

REF. MODEL

!

NO. ITEM

PW2 AUDIO BOARD ASSY YB10320C2-02 YB10320A2-02
R2201 MG RESISTOR — NRSA6AJ-103W
R2202 MG RESISTOR — NRSA6AJ-103W
R2203 MG RESISTOR — NRSA6AJ-473W
R2204 MG RESISTOR — NRSA6AJ-473W
C2108 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2207 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2208 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2211 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2214 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2223 CAPACITOR NCBA1AK-104W ———
C2224 CAPACITOR NCBA1AK-104W ———
C2301 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2402 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *
C2751 T CAPACITOR NBE20JM-106X *NBE80JM-106X * *

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

JACK BOARD ASSEMBLY <09>

REF. MODEL

!

NO. ITEM

PW1 JACK BOARD ASSY YB10323B1 *YB10323B1-01 * *
Q2801 TRANSISTOR — *2SD1979/S/-X * *
R2801 MG RESISTOR — *NRSA63J-103X * *
R2805 MG RESISTOR — *NRSA63J-0R0X * *
C2801 CAPACITOR — *NCB31CK-683X * *
C2803 CAPACITOR — *NCB31EK-153X * *

GR-DVX88EG GR-DVX78A GR-DVX78A-S GR-DVX78EA

Notes : Mark is same as left.

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

3

VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION

S40894

Printed in Japan