JVC GR-AXM230, GR-SXM330U, GR-SXM930U Service Manual

COMPACT VHS CAMCORDER

JVC SERVICE & ENGINEERING COMPANY OF AMERICA

DIVISION OF JVC AMERICAS CORP.

Head office
East Coast
Midwest
West Coast
Atlanta
Hawaii

1700 Valley Road Wayne, New Jersey 07470-9976

:

10 New Maple Avenue Pine Brook, New Jersey 07058-9641

:

705 Enterprise Street Aurora, Illinois 60504-8149

:

5665 Corporate Avenue Cypress, California 90630-0024

:

1500 Lakes Parkway Lawrenceville, Georgia 30043-5857

:

2969 Mapunapuna Place Honolulu, Hawaii 96819-2040

:

[phone]
[phone]
[phone]
[phone]
[phone]
[phone]

JVC CANADA INC.

Head office
Montreal
Vancouver

:

21 Finchdene Square Scarborough, Ontario M1X 1A7

:

16800 Rte Trans-Canadienne, Kirkland, Quebec H9H 5G7

:

13040 Worster Court Richmond, B.C. V6V 2B3

[phone]
[phone]
[phone]

S40895-03

GR-AXM230U/SXM330U/SXM930U

GR-AXM230U/SXM330U/SXM930U

SPECIFICATIONS

Camcorder

General

Format : S-VHS/VHS NTSC standard

No. 86595

Power source : DC 11 V

Power consumption

Viewfinder on : 4.7 W
LCD monitor on : 5.4 W

Video light : 3.0 W
Signal system : NTSC-type
Video recording system

Luminance : FM recording

Color : Converted sub-carrier

Cassette : / cassette
Tape speed

SP : 33.35 mm/sec. (1-5/16 ips)

EP : 11.12 mm/sec. (7/16 ips)
Recording time (max.)

SP : 40 minutes

EP : 120 minutes (with TC-40)
D.S.C. format

Recording format : Digital data storage

Recording medium : Built-in flash memory,

Number of storable shots

FINE mode : approx. 30 shots

STANDARD mode: approx. 60 shots

(Using AC Adapter)
DC 6 V

(Using battery pack)

direct recording
Conforms to VHS standard

(based on JPEG)

2 Mbyte

(The specifications shown pertain specifically to the model GR-SXM930)

Image size : 640 x 480 pixels

Operating

temperature :0°C to 40°C (32°F to 104°F)
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C

Weight : Approx. 930 g (2.1 lbs)
Dimensions : 206 mm x 112 mm x 118 mm

Pickup : 1/4" format CCD
Lens : F1.6, f = 3.9 mm to 62.4 mm,

Viewfinder : Electronic viewfinder with

White balance

adjustment : Auto/Manual adjustment
LCD monitor : 3" diagonally measured, LCD

Speaker : Monaural

Connectors

Video :1 V (p-p), 75 Ω unbalanced,

Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and specifications subject to change

without notice.

(when captured on a PC)

(–4°F to 122°F)

(8-1/8" x 4-7/16" x 4-11/16")
(with the LCD monitor closed
and with the viewfinder fully
tilted downward)

16:1 power zoom lens with
auto iris and macro control,
filter diameter 40.5 mm

0.55" color LCD

panel/TFT active matrix
system

analog output
(via Video output connector)

Audio : 300 mV (rms), 1 kΩ analog

Digital : ø2.5 mm, 4-pole, mini-head

S-Video : Y :1 V (p-p), 75 Ω,

AC Adapter AP-V10U

Power requirement

U.S.A. and Canada : AC 120 V`, 60 Hz
Other countries : AC 110 V to 240 V`,

Output : DC 11 V , 1 A
Dimensions : 59 mm x 31 mm x

(W x H x D) 69 mm (2-3/8" x 1-1/4" x

Weight : Approx. 130 g (0.29 lbs)

Optional Accessories

•Battery Packs BN-V12U, BN-V20U, BN-V400U

•A/V (Audio/Video) Cable

•S-Video Cable QAM0004-004

• Compact S-VHS ( ) Cassettes ST-C-40/30/20

•Compact VHS ( ) Cassettes TC-40/30/20

•Active Carrying Bag CB-V7U

Some accessories are not available in some areas.
Please consult your nearest JVC dealer for details on
accessories and their availability.

output
(via Audio output connector)

jack

analog output

C : 0.29 V (p-p), 75 Ω,

analog output

50 Hz/60 Hz

2-3/4")

Printed in Japan

This service manual is printed on 100% recycled paper.

COPYRIGHT

© 2000 VICTOR COMPANY OF JAPAN, LTD.

No. 86595

November 2000

TABLE OF CONTENTS

Section Title Page

Important Safety Precautions
INSTRUCTIONS

1. DISASSEMBLY

1.1 SERVICE CAUTIONS .......................................................... 1-1

1.1.1 Precautions .................................................................. 1-1

1.1.2 How to read the disassembly and assembly ................1-1

1.1.3 Connection of the wires ................................................ 1-1

1.2 TOOLS REQUIRED FOR ADJUSTMENTS ......................... 1-2

1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS ............. 1-3

1.3.1 Disassembly flow chart .................................................1-3

1.3.2 Disassembly method .................................................... 1-3

1.4 DISASSEMBL Y/ASSEMBLY OF CAMERA SECTION

AND DECK SECTION .......................................................... 1-9

1.4.1 Flowchart of disassembly ............................................. 1-9

1.4.2 Disassembly method .................................................... 1-9

1.5 REPLACEMENT OF CCD IMAGE SENSOR ..................... 1-12

1.5.1 Removal of CCD image sensor .................................. 1-12

1.5.2 Installation of new CCD image sensor ....................... 1-12

1.5.3 Replacement of CCD board assy ............................... 1-12

1.6 TAKE OUT CASSETTE TAPE ............................................ 1-13

1.7 EMERGENCY DISPLAY..................................................... 1-14

1.8 DEMONSTRATION MODE ................................................ 1-14

1.9 SERVICE NOTE ................................................................. 1-16

2. MECHANISM ADJUSTMENT

2.1 SERVICE CAUTIONS ............................................................ 2-1

2.1.1 Precautions .................................................................... 2-1

2.1.2 How to read the disassembly and assembly

(For Mechanism Parts) .................................................. 2-1

2.1.3 Required adjustment tools ............................................. 2-1

2.2 DISASSEMBLY/ASSEMBLY OF MECHANISM PARTS ........ 2-2

2.3 CHECKUP AND ADJUSTMENT OF MECHANISM

PHASE ................................................................................. 2-6

2.4 TAPE TRANSPORT ADJUSTMENT .................................... 2-7

2.4.1 Back tension ................................................................. 2-7

2.4.2 Tape pattern ................................................................. 2-7

2.4.3 A/CTL head height & azimuth ...................................... 2-8

2.4.4 Phase of control head (X value) ................................... 2-9

2.5 REMARKS............................................................................ 2-9

2.5.1 Cleaning ....................................................................... 2-9

2.5.2 Applying oil and grease ................................................ 2-9

2.5.3 Checkup ....................................................................... 2-9

2.6 JIG CONNECTOR CABLE CONNECTION ........................ 2-10

3. ELECTRICAL ADJUSTMENT

3.1 ELECTRICAL ADJUSTMENT............................................... 3-1

3.1.1 PREPARATION ............................................................ 3-1

3.2 MONITOR ADJUSTMENT.................................................... 3-3

3.2.1 V COM.......................................................................... 3-3

3.3 ELECTRONIC VIEWFINDER (E. VF) ADJUSTMENT ......... 3-4

3.3.1 Tilt................................................................................. 3-4

3.3.2 Centering...................................................................... 3-4

3.3.3 Vertical scanning .......................................................... 3-4

3.3.4 Brightness .................................................................... 3-4

3.3.5 Focus............................................................................ 3-4

Section Title Page

4. CHARTS AND DIAGRAMS

NOTES OF SCHEMATIC DIAGRAM ................................... 4-1

CIRCUIT BOARD NOTES.................................................... 4-2

4.1 BOARD INTERCONNECTIONS .......................................... 4-3

4.2 CPU SCHEMATIC DIAGRAM .............................................. 4-5

4.3 VTR ASP SCHEMATIC DIAGRAM.......................................4-7

4.4 MECHA MDA SCHEMATIC DIAGRAM ................................ 4-9

4.5 VTR DSP SCHEMATIC DIAGRAM .................................... 4-11

4.6 DSP SCHEMATIC DIAGRAM............................................. 4-13

4.7 IRIS & AF/ZOOM SCHEMATIC DIAGRAM ........................ 4-15

4.8 VIDEO OUT SCHEMATIC DIAGRAM ................................ 4-17

4.9 REGULATOR SCHEMATIC DIAGRAM..............................4-19

4.10 LCD CTL SCHEMATIC DIAGRAM

(FOR AXM230/SXM330) ................................................... 4-21

4.11 LCD CTL SCHEMATIC DIAGRAM (FOR SXM930) ........... 4-23

4.12 JACK AND CCD SCHEMATIC DIAGRAMS ....................... 4-25

4.13 SPEAKER AND MONITOR SCHEMATIC DIAGRAMS ...... 4-27

4.14 C-VF BL SENSOR SCHEMATIC DIAGRAM ...................... 4-29

4.15 DSC SCHEMATIC DIAGRAM ............................................ 4-31

4.16 TOP OPE UNIT, ZOOM UNIT, REAR UNIT

AND SENSOR SCHEMA TIC DIAGRAMS ........................... 4-33

4.17 ELECTRONIC VIEWFINDER SCHEMATIC DIAGRAM ......... 4-35

4.18 MAIN CIRCUIT BOARD ..................................................... 4-37

4.19 CCD AND C-VF BL CIRCUIT BOARDS ............................. 4-43

4.20 MONITOR CIRCUIT BOARD .............................................4-45

4.21 DSC CIRCUIT BOARD.......................................................4-47

4.22 ELECTRONIC VIEWFINDER CIRCUIT BOARD ............... 4-49

4.23 POWER SYSTEM BLOCK DIAGRAM ............................... 4-51

4.24 CPU/MDA SYSTEM BLOCK DIAGRAM ............................ 4-53

4.25 CAMERA SYSTEM BLOCK DIAGRAM.............................. 4-55

4.26 Y/C SYSTEM BLOCK DIAGRAM .......................................4-59

4.27 MONITOR SYSTEM BLOCK DIAGRAM ............................4-61

4.28 WAVEFORMS ....................................................................4-63

4.29 VOLTAGE CHARTS ........................................................... 4-64

5. PARTS LIST

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

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

5.3 MECHANISM ASSEMBLY <M3> .........................................5-6

5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4>

(SXM930U/UC)..................................................................... 5-8

5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4>

(AXM230U/UC/SXM330U/UC) ............................................. 5-9

5.5 MONITOR ASSEMBL Y <M5>............................................. 5-10

5.6 ELECTRICAL PARTS LIST ................................................ 5-11

MAIN BOARD ASSEMBLY <01>........................................ 5-11

CCD BOARD ASSEMBLY <02> ......................................... 5-18

C-VF BL BOARD ASSEMBLY <06> E,F ............................ 5-19

MONITOR BOARD ASSEMBLY <07> ................................5-19

DSC BOARD ASSEMBLY <08> E,F...................................5-19

E. VF BOARD ASSEMBLY <50>........................................ 5-20

The following table lists the differing points between Models GR-AXM230U/UC, GR-SXM330U/UC and GR-SXM930U/UC in this series.

GR-AXM230U GR-SXM330U GR-SXM930U

VIEW FINDER B/W B/W COLOR
LCD MONITOR 2.5* 2.5* 3.0*
BODY COLOR MOLD BLACK MET ALLIC GRAY SILVER
DIGIT AL STILL CAMERA NOT USED NOT USED USED
SHUTTER SOUND NOT USED NOT USED USED
SNAP SHOT NOT USED USED (FULL ONLY) USED (FULL & PIN-UP)
NIGHT ALIVE NOT USED USED USED
5SEC REC SW USED NOT USED NOT USED
S-VHS SW NOT USED USED USED
S OUTPUT NOT USED USED USED
PC TERMINAL NOT USED NOT USED USED
RCU UNIT NOT USED RM-V715U RM-V715U
PC CONNECTION CABLE NOT USED NOT USED PROVIDE
CD-ROM NOT USED NOT USED PROVIDE

SECTION 1

DISASSEMBLY

1.1 SERVICE CAUTIONS

1.1.1 Precautions

1. Before disassembling/re-assembling the set as well as
soldering parts, make sure to disconnect the power
cable.

2. When disconnecting/connecting connectors, pay enough
attention to wiring not to damage it.

3. In general, chip parts such as resistor, shorting jumpers
(0-ohm resistor), ceramic capacitors, diodes, etc. can not
be reused after they were once removed.

4. When installing parts, be careful not to do with other parts
as well as not to damage others.

5. When removing ICs, be careful not to damage circuit
patterns.

6. Tighten screws properly during the procedures. Unless
specified otherwise, tighten screws at torque of 0.196 N·m
(2.0 kgf·cm).

1.1.2 How to read the disassembly and assembly

(For Cabinet Parts)

STEP
/LOC PART

NO.

CASSETTE

1

COVER ASSEMBLY

Fig.
No.

C1 2(S1)

REMOVAL

*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/

UNSOLDER

1.1.3 Connection of the wires

1. Pull the connector structure upward to release the clamp
when removing or inserting the flat wire cable.

Wire

Connector

Fig. 1-1-1

Wire

2

UPPER CASE C2 2(S2), (L2)

LOWER CASE C3 9(S3), (L3a), (L3b)

3 ASSEMBLY(INCL. *CN 3a 3b

E. VF. ASSEMBLY) CAP (RCA jack)

▲▲

(1) (2) (3) (4)

(1) Order of steps in Procedure

When reassembling, preform the step(s) in the reverse
order. These numbers are also used as the identifica-

tion (location) No. of parts Figures.
(2) Part to be removed or installed.
(3) Fig. No. showing Procedure or Part Location.

C = Cabinet

CA = Camera

D = Deck

(4) Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

P = Spring

W = Washer

S = Screw

* = Unhook, unlock, release, unplug or unsolder.

2(S3) = 2 Screws (S3)

CN = Connector

(5) Adjustment information for installation.

▲

▲

NOTE:

Connector

After removing the wire, return the stopper to
its original position, because it is apt to come
off if it is left open.

Fig. 1-1-2

1-1

1.2 TOOLS REQUIRED FOR ADJUSTMENTS

Alignment tape

(for SP interchangeability)

1

MHP-C

Alignment tape

(for N. SP PB Y/C level)

2

MHV-2C

15 16

PC cable

QAM0099-002

Cleaning cloth

KSMM-01

3

5

78

910

11 12

13

Torque driver

YTU94088

INF adjustment lens

YTU92001B

Gray Scale Chart

YTU94133A

INF lens holder

YTU94087

Camera stand

YTU93079

Jig connector cable

YTU93106A

4

6

Light box Assembly

Service support system software

14

Bit

YTU94088-003

Conn. ring

YTU92001-111

Color Bar Chart

YTU94133C

YTU93096A

Extension connector

YTU94145B-30

YTU94057-51

Table 1-2-1

1,2. Alignment tape

To be used for check and adjustment of interchangeability
of the mechanism.
(Video: Color bar signal, Audio: Non-signal)

3. Torque driver
Be sure to use to fastening the mechanism and exterior
parts because those parts must strictly be controlled for
tightening torque.

4. Bit
This bit is slightly longer than those set in conventional
torque drivers.

5. INF adjustment lens
To be used for adjustment of the camera system.

6. Conn. ring
The connector ring to attach the INF. lens to the head of
the OP lens.

7. Gray scale chart
To be used for adjustment of the camera system.

8. Color bar chart
To be used for adjustment of the camera system.

9. INF lens holder
To be used together with the camera stand (11) for
operating the VideoMovie in the stripped-down condition
such as the status without the exterior parts or for using
commodities that are not yet conformable to the
interchangeable ring.

10. Light box assembly
To be used for adjustment of the camera system.

11. Camera stand
To be used together with the INF adjustment lens holder.

12. Extention connector
To be used to JIG connector cable

13. JIG connector cable
Connected to CN25 of the main board and used for
measuring error rates, etc.

14. Service support system software
To be used for adjustment with a personal computer.

15. PC cable
To be used to connect the VideoMovie and a personal
computer with each other when a personal computer is
used for adjustment.

16. Cleaning cloth
Recommended cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens
surface.

1-2

1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS

1.3.1 Disassembly flow chart

This flowchart indicates the disassembly step for the cabi­net parts and board assembly in order to gain access to
item(s) to be serviced. When reassembling, perform the
step(s) in reverse order. Bend, route and dress the flat ca­bles as they were originally.

1 Cassette cover assembly

2 Upper case

▼

▼

3 Lower case assembly

(Incl. E. VF assembly)

▼

4 E. VF assembly

▼

5 Top operation unit assembly

6 Rear unit

▼

▼

7 Front cover assembly

(Incl. Microphone,

DC light assembly)

▼

8 Microphone

9 DC light assembly

▼

▼

▼

0 Monitor assembly

- Front frame assembly

▼

1.3.2 Disassembly method

STEP
/LOC PART

NO.

Fig.
No.

REMOVAL

*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/

UNSOLDER

1 CASSETTE C1 2(S1)

COVER ASSEMBLY

2

UPPER CASE C2 2(S2), (L2)

3 LOWER CASE C3 9(S3), (L3a), (L3b)

ASSEMBLY (INCL. *CN 3a 3b
E. VF ASSEMBLY) CAP (RCA jack)

4 E. VF ASSEMBLY C4 3(S4)
5 TOP OPERATION C5 2(S5), (L5a), (L5b), (L5c)

UNIT ASSEMBLY *CN 5a

6 REAR UNIT C6 3(S6), (L6a), (L6b)

*CN 6a

7 FRONT COVER C7 2(S7a), (S7b), (L7a), (L7b)

ASSEMBLY (INCL. MIC *CN 7a
DC LIGHT ASSEMBLY)

8 MICROPHONE (S7a)
9 DC LIGHT ASSEMBLY 2(L7c)
0 MONITOR ASSEMBLY C8 2(S8a), (S8b)

*CN 8a

C9 2(S9a), (S9b), (S9c)

C10 2(S10a), 2(S10b), 2(S10c),

(L10a), (L10b), (L10c)

C11 (L11a), (L11b), (L11c)

*CN 11a , 11b , 11c

C12 2(S12a), (S12b), 2(L12a)

- FRONT FRAME C13 2(S13)

ASSEMBLY

List of Abbreviations:

2(S1)=2 screws (S1)
4(L1a)=4 Locking Tabs
CN=Connector

Reference Notes:
<NOTE 1>
Destination of connectors

Note:

Two kinds of double-arrows in connection tables
respectively show kinds of connector/wires.

: Flat wire

: Wire

Con- No. of

nector Pins

3a 2 SPEAKER MAIN CN27

20 C-VF BL CN7551 MAIN CN11

3b

5 E. VF (B/W) MAIN CN12

5a 12 TOP OPERATION UNIT MAIN CN18

6a 13 REAR UNIT MAIN CN28

7a 2 MIC MAIN CN8

8a 33 MONITOR ASSEMBLY MAIN CN16

11a 28 MONITOR CN7501 T. HINGE

11b 24 MONITOR CN7502 LCD MODULE

11c 2 MONITOR CN7503 BACK LIGHT

Connector

1-3

2

(L2)

3

(S2)

4

(S2)

<NOTE 2, 3>
(1) The FPC assembly should be winded around the hinge

assembly by two and half turns so that the wire to be
connected to the monitor board assembly is positioned
inside.

(2) The upper and lower hinge covers should be mounted so

carefully the any wire is not caught into either of the
covers.

Fig. C2

1

(S1)

2

(S1)

1

Fig. C1

5

(S3)

3b

CN12

FOIL

SIDE

CN11
COMPONENT
SIDE

8

(S3)

6

(S3)

7

(S3)

(L3b)

3a

(L3a)

9

(S3)

CAP

(RCA jack)

13

(S3)

10

(S3)

12

(S3)

3

11

(S3)

1-4

Fig. C3

5

5a

18

(S5)

17

(S5)

(L5c)

(L5a)

(L5b)

<GR-AXM230

/GR-SXM330>

4

<GR-SXM930>

4

16

(S4)

14

(S4)

15

(S4)

Fig. C4

6a

(L6a)

Fig. C5

(L6b)

20

(S6)

19

(S6)

6

21

(S6)

Fig. C6

1-5

(L7c)

(L7a)

7

22

(S7a)

23

(S7a)

(S7a)

25

7a

9

(L7b)

24

(S7b)

8

Fig. C7

8a

10

1-6

Fig. C8

28

(S8b)

26

(S8a)

27

(S8a)

Bracket (Upper) ASSY

10

29

(S9a)

37

(S10c)

38

(S10c)

32

(S9c)

31

(S9b)

Fig. C9

Upper case assy

Monitor cover

(L10a)

(L10b)

30

(S9a)

(L10c)

33

(S10a)

34

(S10a)

36

(S10b)

35

(S10b)

: 0.118 N·m (1.2 kgf·cm)

Fig. C10

1-7

LCD module

(

)

(L11b)

Holder

Back light

(L11c)

Monitor case

(L11a)

T.Hinge assy

Fig. C11

Reinforced
surface

11a

Monitor

<07>

11c

11b

1-8

Cover (Hinge U)

Cover (Hinge L)

Hinge

39

(S12a)

(L12a)

40

(S12a)

Plate (SW)

41

S12b

FPC

Push switch

Reinforced
surface

Reinforced
surface

Hinge

Note 2,3

FPC

Fig. C12