JVC GR-DF420EK, GR-DF420EX, GR-DF420EY, GR-DF420EZ, GR-DF425EG Service Manual

...

SERVICE MANUAL

DIGITAL VIDEO CAMERA

YF08720053

GR-DF420EK, GR-DF420EX, GR-DF420EY, GR-DF420EZ, GR-DF425EK, GR-DF425EG, GR-DF430EK, GR-DF460EK, GR-DF470EK, GR-DF470EX, GR-DF470EY, GR-DF470EZ

GR-DF420EKM, GR-DF420EXM, GR-DF420EYM, GR-DF420EZM, GR-DF425EKM, GR-DF425EGM[M5D5S2] , GR-DF430EKM[M5D5S3],GR-DF460EKM[M5D5S6], GR-DF470EKM, GR-DF470EXM GR-DF470EYM, GR-DF470EZM[M5D5S7]

For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700(MECHANISM ASSEMBLY).

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

No.YF087

2005/3

SPECIFICATION

Camcorder

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

DC 7.2 V (Using battery pack)

Power consumption Approx. 3.2 W(3.5W*)(LCD monitor off, viewfinder on)

Approx. 4.2W (4.5W*)(LCD monitor on, viewfinder off) * Using LED Light (LED Light model only)

Dimensions (W × H × D) 75 mm × 74mm × 111 mm

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

Weight Approx. 400g (without battery, cassette, memory card * and lens cap)

Approx. 480 g (incl. battery, cassette memory card *and lens cap) * GR-DF430,460,470 only

Operating temperature 0°C to 40°C

Operating humidity 35% to 80%

Storage temperature -20°C to 50°C

Pickup 1/6" CCD Lens F 1.2, f = 2.6 mm to 39 mm, 15:1 power zoom lens Filter diameter Ø30.5 mm LCD monitor 2.5" diagonally measured, LCD panel/TFT active matrix system Viewfinder Electronic viewfinder with 0.16" color LCD Speaker Monaural LED Light Effective distance: 1.5 m

For Digital Video Camera

For Digital Still Camera (GR-DF460,470 only)

For Connectors S S-Video input

Format DV format (SD mode) Signal format PAL standard Recording/Playback

format

Cassette Mini DV cassette Tape speed SP: 18.8 mm/s, LP: 12.5 mm/s Maximum recording time

(using 80 min. cassette) Storage media SD Memory Card/MultiMediaCard Compression system JPEG (compatible)

File size Still image : 2 modes ( 1024 × 768 pixels/640 × 480 pixels)

Picture quality 2 modes (FINE/STANDARD)

AV Video input

Microphone input Ø3.5 mm, stereo DV Input*/output

USB(GR-DF460,470 only) Mini USB-B type, USB 1.1/2.0 compliant

Video Digital component recording Audio PCM digital recording, 32 kHz 4-channel (12-bit), 48 kHz 2-channel (16-bit)

SP: 80 min., LP: 120 min.

Moving image:1 mode (160 × 120 pixels)

Y: 0.8 V to 1.2 V (p-p), 75Ω , analogue

(GR-DF430,470 only)

S-Video output Y: 1.0 V (p-p), 75Ω, analogue

(GR-DF430,470 only)

Video output 1.0 V (p-p), 75Ω, analogue

Audio input (GR-DF430,470 only)

Audio output 300 mV (rms), 1 kΩ, analogue, stereo

* GR-DF430,460, 470 only

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

C: 0.29 V (p-p), 75Ω, analogue

0.8 V to 1.2 V (p-p), 75Ω, analogue

300 mV (rms), 50 kΩ , analogue, stereo

4-pin, IEEE 1394 compliant

AC Adapter

Power requirement AC 110 V to 240 V, 50 Hz/60 Hz Output DC 11 V, 1 A

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

1-2 (No.YF087)

SECTION 1

PRECAUTIONS

1.1 SAFTY PRECAUTIONS

Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold.However,in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

1.1.1 Precautions during Servicing

(1) Locations requiring special caution are denoted by labels

and inscriptions on the cabinet, chassis and certain parts of the product.When performing service, be sure to read and comply with these and other cautionary notices appearing in the operation and service manuals.

(2) Parts identified by the symbol and shaded ( ) parts

are critical for safety. Replace only with specified part numbers.

NOTE :

Parts in this category also include those specified to comply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission.

(3) Fuse replacement caution notice.

Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified.

(4) Use specified internal wiring. Note especially:

• Wires covered with PVC tubing

• Double insulated wires

• High voltage leads

(5) Use specified insulating materials for hazardous live parts.

Note especially:

• Insulation Tape

• PVC tubing

•Spacers

• Insulation sheets for transistors

•Barrier

(6) When replacing AC primary side components (transformers,

power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering.

emission. Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts. Under no circumstances attempt to modify these circuits.Unauthorized modification can increase the high voltage value and cause X-ray emission from the cathode ray tube.

(12) Crimp type wire connectorIn such cases as when replacing

the power transformer in sets where the connections between the power cord and power trans former primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely according to the following steps.

• Connector part number :E03830-001

• Required tool : Connector crimping tool of the proper type which will not damage insulated parts.

• Replacement procedure

a) Remove the old connector by cutting the wires at a

point close to the connector.Important : Do not reuse a connector (discard it).

cut close to connector

Fig.1-1-3

b) Strip about 15 mm of the insulation from the ends

of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

15 mm

Fig.1-1-4

c) Align the lengths of the wires to be connected.

Insert the wires fully into the connector.

Metal sleeve

Fig.1-1-1

(7) Observe that wires do not contact heat producing parts

(heatsinks, oxide metal film resistors, fusible resistors, etc.)

(8) Check that replaced wires do not contact sharp edged or

pointed parts.

(9) When a power cord has been replaced, check that 10-15

kg of force in any direction will not loosen it.

Power cord

Fig.1-1-2 (10) Also check areas surrounding repaired locations. (11) Products using cathode ray tubes (CRTs)In regard to such

products, the cathode ray tubes themselves, the high voltage circuits, and related circuits are specified for compliance with recognized codes pertaining to X-ray

Connector

Fig.1-1-5

d) As shown in Fig.1-1-6, use the crimping tool to crimp

the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.

1.2 5

2.0

5.5

Crimping tool

Fig.1-1-6

e) Check the four points noted in Fig.1-1-7.

Not easily pulled free

Wire insulation recessed

more than 4 mm

Crimped at approx. cente

of metal sleeve

Conductors extended

Fig.1-1-7

(No.YF087)1-3

1.1.2 Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.

(1) Insulation resistance test

Confirm the specified insulation resistance or greater between power cord plug prongs and externally exposed parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.).See table 1 below.

(2) Dielectric strength test

Confirm specified dielectric strength or greater between power cord plug prongs and exposed accessible parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See Fig.1-1-11 below.

(3) Clearance distance

When replacing primary circuit components, confirm specified clearance distance (d), (d') between soldered terminals, and between terminals and surrounding metallic parts. See Fig.1-1-11 below.

Chassis

Power cord primary wire

Fig.1-1-8

(4) Leakage current test

Confirm specified or lower leakage current between earth ground/power cord plug prongs and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON)Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See Fig.1-1-9 and following Fig.1-1-12.

Externally exposed accessible part

Fig.1-1-9

(5) Grounding (Class 1 model only)

Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in, Video out, Audio in, Audio out or Fixing screw etc.).Measuring Method: Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See Fig.1-1-10 and grounding specifications.

AC inlet

Earth pin

Exposed accessible part

MIlli ohm meter

Grounding Specifications

Region

USA & Canada

Europe & Australia

Grounding Impedance (Z

Z 0.1 ohm

Z 0.5 ohm

)

Fig.1-1-10

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

200 to 240 V

Region

Japan

USA & Canada

Europe & Australia

Insulation Resistance (R

R 1 M /500 V DC

1 M R 12 M /500 V DC

R 10 M /500 V DC

)

Dielectric Strength

AC 1 kV 1 minute

AC 1.5 kV 1 minute

AC 1 kV 1 minute AC 3 kV 1 minute

AC 1.5 kV 1 minute

(

Class

(

Class

Clearance Distance (d), (d'

d, d' 3 mm

d, d' 4 mm

d, d' 3.2 mm

d 4 m m

)

d' 8 m m (Power cord d' 6 m m (Primary wire

)

Fig.1-1-11

AC Line Voltage

100 V

110 to 130 V

220 to 240 V

Region

Japan

USA & Canada

Europe & Australia

Load Z

0.15

1.5

Leakage Current (i)

i 1 mA rms

i 0.5 mA rms

i 0.7 mA peak i 2 mA dc

a, b, c

Exposed accessible parts

Antenna earth terminals

Other terminals

Fig.1-1-12

NOTE :

These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.

)

1-4 (No.YF087)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DIFFERENCE LIST

The following table indicate main different points between models GR-DF420EK, GR-DF420EX, GR-DF420EY, GR-DF420EZ, GR-DF425EK, GR-DF425EG, GR-DF430EK,GR-DF460EK, GR-DF470EK, GR-DF470EX, GR-DF470EY AND GR-DF470EZ.

MODEL NAME GR-DF420EK GR-DF420EX GR-DF420EY GR-DF420EZ

LED LIGHT NO NO NO NO

MEMORY CARD NO NO NO NO

USB TERMINAL NO NO NO NO

DV TERMINAL YES(OUT) YES(OUT) YES(OUT) YES(OUT)

ANALOG INPUT NO NO NO NO

REMOTE CONTROL RM-V720US RM-V720US RM-V720US RM-V720US

VIDEO/MEMORY NO NO NO NO

AC ADAPTER AP-V14E AP-V17E AP-V17E AP-V17E

AC CORD YES(BS Plug) NO NO NO

USB CABLE NO NO NO NO

CD-ROM NO NO NO NO

MODEL NAME GR-DF425EK GR-DF425EG GR-DF430EK GR-DF460EK

LED LIGHT NO NO NO YES

MEMORY CARD NO NO NO MMC(8MB)

USB TERMINAL NO NO NO USB(VC)

DV TERMINAL YES(OUT) YES(OUT) YES(IN/OUT) YES(OUT)

ANALOG INPUT NO NO YES NO

REMOTE CONTROL NO RM-V720US RM-V720US RM-V720US

VIDEO/MEMORY NO NO NO YES

AC ADAPTER AP-V14E AP-V17E AP-V14E AP-V14E

AC CORD YES(BS Plug) NO YES(BS Plug) YES(BS Plug)

USB CABLE NO NO NO YES

CD-ROM YES NO YES YES

MODEL NAME GR-DF470EK GR-DF470EX GR-DF470EY GR-DF470EZ

LED LIGHT YES YES YES YES

MEMORY CARD MMC(8MB) MMC(8MB) MMC(8MB) MMC(8MB)

USB TERMINAL USB(VC) USB(VC) USB(VC) USB(VC)

DV TERMINAL YES(IN/OUT) YES(IN/OUT) YES(IN/OUT) YES(IN/OUT)

ANALOG INPUT YES YES YES YES

REMOTE CONTROL RM-V720US RM-V720US RM-V720US RM-V720US

VIDEO/MEMORY YES YES YES YES

AC ADAPTER AP-V14E AP-V17E AP-V17E AP-V17E

AC CORD YES(BS Plug) NO NO NO

USB CABLE YES YES YES YES

CD-ROM YES YES YES YES

(No.YF087)1-5

SECTION 3

DISASSEMBLY

3.1 BEFORE ASSEMBLY AND DISASSEMBLY

3.1.1 Precautions

• Be sure to disconnect the power supply unit prior to mounting and soldering of parts.

• Prior to removing a component part that needs to disconnect its connector(s) and its screw(s), first disconnect the wire(s) from the connector(s), and then remove the screw(s).

• When connecting/disconnecting wires, pay enough attention not to damage the connectors.

• When inserting the flat wire to the connector, pay attention to the direction of the flat wire.

• Be careful in removing the parts to which some spacer or shield is attached for reinforcement or insulation.

• When replacing chip parts (especially IC parts), first remove the solder completely to prevent peeling of the pattern.

• Tighten screws properly during the procedures. Unless otherwise specified, tighten screws at a torque of 0.069N

·cm). However, as this is a required value at the time of

(0.7kgf

·m

production, use the value as a measuring stick when proceeding repair services. (See "SERVICE NOTE" as for tightening torque.)

3.1.2 Destination of connectors

Two kinds of double-arrows in connection tables respectively

show kinds of connector/wires.

: Wire: Flat wire : Board to board (B-B)

: The connector of the side to remove

CONN. No. PIN No.CONNECTOR

CN2a

CN2b

MAIN CN101

MAIN CN103

MONI BW CN761

MINI BW CN762

3.1.3 Disconnection of connectors (Wires)

Wire

· Pull both ends of the connector in the arrow direction, remove the lock and disconnect the flat wire.

· Pull the both ends of the board in the direction of the arrow, and remove the B-B Connector.

B-B Connector

· Pull the both ends of the board in the direction of the arrow, and remove the B-B Connector.

FPC Connector

Wire

FPC Connector

· Extend the locks in the direction of the arrow for unlocking and then pull out the wire. After removing the wire, immediately restore the locks to their original positions because the locks are apt to come off the connector.

Wire

FPC Connector

Wire

FPC Connector

Lock

B-B Connector

Fig.3-1-1

3.1.4 Tools required for disassembly and assembly

Torque driver

YTU94088

Chip IC replacement jig

PTS40844-2

Bit

YTU94088-003

Cleaning cloth

KSMM-01

Tweezers

P-895

Fig.3-1-2

• Torque driver

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

• Bit

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

• Tweezers

To be used for removing and installing parts and wires.

• Chip IC replacement jig

To be used for replacement of IC.

• Cleaning cloth

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

3.2 ASSEMBLY AND DISASSEMBLY OF MAIN PARTS

3.2.1 Assembly and disassembly

When reassembling, perform the step(s) in reverse order.

STEP

No.

[1] [2]

[8]

PART

TOP COVER ASSY UPPER ASSY (Inc. VF ASSY, SPEAKER/MONITOR) E.VF UNIT(B/W)

(∗1) Order of steps in Procedure

When reassembling, preform the step(s) in the reverseorder. These numbers are also used as the identification (location) No. of parts Figures.

(∗2) Part to be removed or installed. (∗3) Fig. No. showing Procedure or Part Location. (∗4) Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

S = Screw L = Lock, Release, Hook SD = Solder CN = Connector

[Example]

• 4 (S1a) = Remove 4 S1a screws.

• 3 (L1a) = Disengage 3 L1a hooks.

• 2 (SD1a) = Unsolder 2 SD1a points.

• CN1a = Remove a CN1a connector.

(∗5) Adjustment information for installation.

Fig. No.

4(S1a), 3(L1a),CN1a

(S2a),2(S2b),3(S2c)

C2-1

2(SD1a), L2,CN2a,b 2(S8),L8,CN8a

C2-2

POINT

( 4) ( 5)( 2) ( 3)( 1)

NOTE

NOTE 8

1-6 (No.YF087)

3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS

zDisassembly procedure

STEP

No.

[1] [2] [3] [4] [5] [6] [7] [8]

[9] [10] [11] [12] [13]

[14] [15]

PART

COVER(JIG CON) COVER(TOP) ASSY SHOE CENTER COVER REAR COVER ASSY FRONT COVER(N-MG)ASSY MIC ASSY UPPER CASE ASSY OP FRAME ASSY LOWER ASSY COVER(FRONT) ASSY FRONT BOARD ASSY MAIN BOARD ASSY

MDA BOARD ASSY MECHA(B) ASSY

Fig. No.

S1a,S1b,JACK COVER(DV)

FA1

S2,L2 3(S3)

FA2

4(S4),L4 3(S5a),S5b,S5c,S5d,L5a,L5b,CN5

FA3

2(S6a),3(S6b),CN6

FA4

2(S7), S8a,S8b,2(S8c),CN8,L8a,L8b

FA5

2(S9),CN9a,CN9b

FA6

CN10a,CN10b,CN10c,4(S10)

FA7

3(S11a),S11b,JACK COVER(MIC)

FA8

S12,L12a,L12b 3(S13a),2(L13a),

FA9

CN13a,b,c,S13b CN14a,b,c,d,2(S14)

FA10-1

S15a,

FA10-2

BKT(MECHA) ASSY

POINT

BKT(FRONT)

SHIELD PLATE,

BKT(PRE-REC),

3(S15b),

NOTE

NOTE1a,b,c

NOTE4 NOTE5

NOTE6a,b

NOTE7 NOTE8

NOTE10a,b,c NOTE11a,b,c

NOTE12

NOTE13a,b

NOTE15

NOTE11b:

During the procedure, leave the CASSETTE COVER (C. COVER) open.

NOTE11c:

When disassembling, be careful in handling the JACK COVER (MIC) as it comes off together.

NOTE12:

During the procedure, be careful not to break the EJECT SW.

NOTE13a:

During the procedure, be careful in handling the HEAT SINK1.

NOTE13b:

Be careful with the wiring and the handling of the wire. Pay special attention for the wire folding position.

NOTE15:

When attaching, be careful not to catch the FPC in between.

NOTE1a:

During the procedure, leave the CASSETTE COVER (C. COVER) open.

NOTE1b:

When removing the screw No.2, leave the JACK COVER (DV) open. Be careful in handling the JACK COVER (DV), as it comes off together when disassembling.

NOTE1c:

When removing the JACK COVER (DV), leave the VF ASSEMBLY pulled out.

NOTE4:

During the procedure, leave the CASSETTE COVER (C. COVER) open.

NOTE5:

When removing the screw No.15, leave the JACK COVER (DC) open.

NOTE6a:

During the procedure, be careful not to break the MAIN BOARD parts.

NOTE6b:

When attaching the screw No.20, be careful not to damage the FFC.

NOTE7:

When attaching, be careful with the wiring..

NOTE8:

During the procedure, leave the CASSETTE COVER (C. COVER) open.

NOTE10a:

As the screw No.31 is located under the connector (CN10a), pull out the connector first, before removing the screw.

NOTE10b:

During the procedure, be careful in handling the HEAT SINK1.

NOTE10c:

When attaching, be careful with the wiring.

NOTE11a:

During the procedure, remove the GRIP BELT.

zDestination of connectors

CN.NO.

CONNECTOR

CN5 MAIN CN103 REAR CN501 40

CN6 MAIN CN114 MIC - 4

CN8 MAIN CN105 MONI.OPE CN601 45

CN9a MAIN CN102 OP BLOCK - 22

CN9b MAIN CN101 CCD CN5001 20

CN10a MAIN CN107 FRONT CN401 16

CN10b MAIN CN108 CAMERA OPE - 14

CN10c MAIN CN112 SPEAKER - 2

CN13a MAIN CN104 MDA CN305 30

CN13b MAIN CN106 SENSOR - 16

CN13c MAIN CN109 HEAD - 8

CN14a MDA CN304 LOADING MOTOR - 6

CN14b MDA CN303

ROTARY ENCORDER SW

- 6

CN14c MDA CN302 DRUM MOTOR - 11

CN14d MDA CN301 CAPSTAN MOTOR - 18

PIN NO.

(No.YF087)1-7

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