JVC GR-FXM37EG Service Manual

COMPACT VHS CAMCORDER

VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION

S40894

GR-FXM37EG, SXM607EG/EK

GR-FXM37EG, SXM607EG/EK

SPECIFICATIONS

Camcorder

General

No. 86589

Format : S-VHS (GR-SXM607)

Power source : DC 11 V

Power consumption

LCD monitor* off,

viewfinder on : 4.0 W

LCD monitor* on,

viewfinder off : 4.5 W

Video light** : 3.0 W

* Models equipped with LCD monitor only.
** GR-SXM607 only.

Signal system : PAL-type
Video recording system

Luminance : FM recording
Colour : Converted sub-carrier

Cassette :
Tape speed

SP : 23.39 mm/sec.
LP : 11.70 mm/sec.

Recording time (max.)

SP : 60 minutes
LP : 120 minutes

Operating

temperature :0°C to 40°C

VHS PAL standard

(Using AC Adapter)
DC 6 V

(Using battery pack)

direct recording
Conforms to VHS standard

(with EC-60 cassette)

VHS
PAL

625

(The specifications shown pertain specifically to the model GR-SXM607EG/FXM37EG)

/ cassette

Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C
Weight : Approx. 910 g (GR-SXM607)

Dimensions : 200 mm x 112 mm x 118 mm
(W x H x D)
* Models equipped with LCD monitor only.

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

Viewfinder : Electronic viewfinder with 0.5"

White balance

adjustment : Auto/Manual adjustment

LCD monitor : 3" diagonally measured,

(models equipped with
LCD monitor only)

Speaker : Monaural

(models equipped with
LCD monitor only)

Connectors

JLIP/EDIT : ø3.5 mm, 4-pole, mini-head

Video : 1 V (p-p), 75 Ω unbalanced,

Approx. 900 g (GR-FXM37)

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

black/white CRT

LCD panel/TFT active matrix
system (GR-SXM607)

: 2.5" diagonally measured, LCD

panel/TFT active matrix system
(GR-FXM37)

jack (compatible with
RC-5325 plug)

analogue output
(via Video output connector)

Audio : 300 mV (rms), 1 kΩ analogue

S-Video : Y : 1 V (p-p), 75 Ω,

output
(via Audio output connector)

analogue output

C : 0.29 V (p-p), 75 Ω,

analogue output

AC Adapter AP-V10EG

Power requirement : AC 110 V to 240 V`,

Power consumption : 23 W
Output : DC 11 V
Dimensions : 59 mm x 31 mm x 84 mm

(W x H x D)
Weight : Approx. 140 g

Optional Accessories

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

• Compact S-VHS (

• Compact VHS (

• Remote Control Unit RM-V700U

• Active Carrying Bag CB-V7U

• Cassette Adapter C-P7U

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.

50 Hz/60 Hz

) Cassettes SE-C45/30

) Cassettes EC-60/45/30

, 1 A

Printed in Japan

This service manual is printed on 100% recycled paper.

COPYRIGHT

© 2000 VICTOR COMPANY OF JAPAN, LTD.

No. 86589

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 .................................................... 1-4

1.4 DISASSEMBLY/ASSEMBLY OF CAMERA SECTION

AND DECK SECTION ........................................................ 1-10

1.4.1 Flowchart of disassembly ........................................... 1-10

1.4.2 Disassembly method .................................................. 1-10

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

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 Horizontal sync.............................................................3-4

Section Title Page

3.3.2 PLL adjustment ............................................................ 3-4

3.3.3 Centering ...................................................................... 3-4

3.3.4 Focus ............................................................................3-5

3.3.5 Brightness .................................................................... 3-5

3.4 SERVICE NOTE................................................................... 3-6

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 DIAGRAMS .................................... 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 DIAGRAMS ......................4-15

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

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

4.10 LCD CTL SCHEMATIC DIAGRAM ..................................... 4-21

4.11 JACK AND CCD SCHEMATIC DIAGRAMS ....................... 4-23

4.12 SPEAKER AND MONITOR

SCHEMATIC DIAGRAMS .................................................. 4-25

4.13 TOP OPE UNIT, ZOOM UNIT, REAR UNIT

AND SENSOR SCHEMA TIC DIAGRAMS ........................... 4-27

4.14 ELECTRONIC VIEWFINDER SCHEMA TIC DIAGRAM ......... 4-29

4.15 MAIN CIRCUIT BOARD ..................................................... 4-31

4.16 CCD CIRCUIT BOARD ...................................................... 4-37

4.17 MONITOR CIRCUIT BOARD ............................................. 4-39

4.18 ELECTRONIC VIEWFINDER CIRCUIT BOARD ............... 4-41

4.19 POWER SYSTEM BLOCK DIAGRAM ............................... 4-43

4.20 CAMERA BLOCK DIAGRAM ............................................. 4-45

4.21 Y/C BLOCK DIAGRAM....................................................... 4-49

4.22 MONITOR BLOCK DIAGRAM ............................................ 4-51

4.23 CPU/MDA BLOCK DIAGRAM ............................................ 4-53

4.24 WAVEFORMS .................................................................... 4-55

4.25 VOLTAGE CHARTS ........................................................... 4-56

5. PARTS LIST

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

5.2 FINAL ASSEMBL Y <M2> ..................................................... 5-3

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

5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4>................. 5-8

5.5 MONITOR ASSEMBL Y <M5>............................................... 5-9

5.6 ELECTRICAL PARTS LIST ................................................ 5-10

MAIN BOARD ASSEMBLY <01>........................................ 5-10

CCD BOARD ASSEMBLY <02> .........................................5-17

MONITOR BOARD ASSEMBLY <07> ................................ 5-17

E. VF BOARD ASSEMBLY <50>........................................ 5-18

The following table lists the differing points between Models GR-FXM37EG and GR-SXM607EG/EK in this series.

GR-FXM37EG GR-SXM607EG GR-SXM607EK

VIDEO LIGHT NOT USED USED
IR RECEIVER NOT USED USED
LCD MONITOR 2.5” 3”
BODY COLOR Mold Black Silver
IMAGE SENSOR 1/4” 320K 1/4” 470K
HORIZONTAL RESOLUTION 300LINES 400LINES
AC CORD CEE TYPE CEE TYPE UK TYPE
BA TTERY PACK BN-BV11U BN-20BU
RCU UNIT NOT USED PROVIDE
SNAP SHOT NOT USED USED (FULL ONLY)
NIGHT SCOPE NOT USED USED
5 SEC REC SW USED NOT USED
S-VHS ON/OFF NOT USED USED
VIDEO OUT SELECT PAL/SECAM NOT USED USED NOT USED

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.

Fig.
No.

REMOVAL

*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/

UNSOLDER

1 CASSETTE C1 2(S1)

COVER ASSEMBLY

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

3

5

78

MHP-C

Torque driver

YTU94088

INF adjustment lens

YTU92001B

Gray Scale Chart

YTU94133A

Alignment tape

(for N. SP PB Y/C level)

2

4

6

MHV-2C

YTU94088-003

Conn. ring

YTU92001-111

Color Bar Chart

YTU94133C

Bit

15 16

PC cable

QAM0099-002

Table 1-2-1

Cleaning cloth

KSMM-01

INF lens holder

910

11 12

13

YTU94087

Camera stand

YTU93079

Jig connector cable

YTU93106A

Light box Assembly

YTU93096A

Extension connector

YTU94145B-30

Service support system software

14

YTU94057-51

1-2

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

8. Gray scale 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
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 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.

1.3 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

6 Rear unit

▼

▼

7 Front cover assembly

(Incl. Microphone,

DC light assembly)

▼

8 Microphone

9 DC light assembly

▼

▼

▼

0 Monitor assembly

- Front frame assembly

▼

Note:

For screw management, refer to the table appearing
in the section "3.4 SERVICE NOTE" (page 3-6).

1-3

1.3.2 Disassembly method

2

(L2)

3

(S2)

4

(S2)

STEP

/LOC PART

NO.

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 *CN 5a

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

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

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

8 MICROPHONE (S7a)

DC LIGHT ASSEMBLY 2(L7c)

9

COVER (LIGHT) 2(L7c)

0 MONITOR ASSEMBLY C8 2(S8a), (S8b)

- 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

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

REMOVAL

Fig.
No.

C9 2(S9a), (S9b), (S9c), (S9d)

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

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

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

*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/

UNSOLDER

*CN 6a

*CN 8a

(L10a), (L10b), (L10c)

*CN 11a , 11b , 11c

Connector

<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.

1

(S1)

2

(S1)

1

Fig. C1

1-4

Fig. C2

5

5a

18

(S5)

17

(S5)

(L5c)

(L5a)

(L5b)

8

(S3)

6

(S3)

7

(S3)

9

(S3)

CAP

(RCA jack)

13

(S3)

5

(S3)

(L3b)

10

(S3)

12

(S3)

3b

3a

(L3a)

3

11

(S3)

4

16

(S4)

Fig. C3

14

(S4)

15

(S4)

Fig. C4

Fig. C5

1-5

6a

(L6a)

Fig. C6

(L6b)

20

(S6)

19

(S6)

6

21

(S6)

(L7c)

9

NO.VIDEO
LIGHT MODEL

(L7c)

9

VIDEO LIGHT
USED MODEL

(L7a)

7

8

(L7b)

22

(S7a)

23

(S7a)

(S7a)

24

(S7b)

25

7a

1-6

Fig. C7

8a

10

26

(S8a)

Fig. C8

Bracket (Upper) ASSY

28

(S8b)

27

(S8a)

10

29

(S9a)

32

(S9c)

Fig. C9

31

(S9b)

30

(S9a)

1-7

37

(S10c)

(L10c)

38

(S10c)

33

(S10a)

34

(S10a)

Upper case assy

Monitor cover

(L10a)

(L10b)

36

(S10b)

35

(S10b)

: 0.118 N·m (1.2 kgf·cm)

Monitor case

Fig. C10

LCD module

(L11a)

T.Hinge assy

(L11b)

Holder

(L11c)

11a

Back light

Monitor

<07>

11c

11b

1-8

Fig. C11