JVC GR-D775US User Manual

YF17320071SERVICE MANUALBaby MoviE

SERVICE MANUAL

DIGITAL VIDEO CAMERA

GR-D750UC, GR-D750US, GR-D770UC, GR-D770US,

GR-D771US, GR-D775US,

GR-D790US, GR-D796US

GR-D750UCM,GR-D750USM [M7D1S3] GR-D770UCM,GR-D770USM GR-D771USM,GR-D775USM GR-D790USM,GR-D796USM [M7D1S5]

For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.YF081(MECHANISM ASSEMBLY). Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

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

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

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

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

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

No.YF173

2007/1

SPECIFICATION

Camcorder

For General Power supply DC 11 V (Using AC Adapter)

DC 7.2 V (Using battery pack)

Power consumption Approx. 2.2 W (2.3 W*) (LCD monitor off, viewfinder on)

Approx. 2.7 W (2.8 W*) (LCD monitor on, viewfinder off) Approx. 7.5 W (Maximum; when charging the battery pack) * Using LED Light

Dimensions (W × H × D) 61 mm × 94 mm × 114 mm(2-3/8" × 3-11/16" × 4-1/2")

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

Weight Approx. 410 g (0.90 lbs) (without battery, cassette and lens cap)

Approx. 480 g (1.06 lbs) (incl. battery, cassette and lens cap)

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 1/6" CCD Lens F 2.0, f = 2.3 mm to 78.2 mm, 34:1 power zoom lens Filter diameter Ø27 mm LCD monitor 2.7" 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 (5 ft)

For Digital Video Camera

For Digital Still Camera

For Connectors AV Video output 1.0 V (p-p), 75Ω, analog

Format DV forma t (SD mode) Signal format NTSC 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 : 640 × 480 pixels

Picture quality 2 modes (FINE/STANDARD)

DV Input/output 4-pin, IEEE 1394 compliant USB Mini USB-B type, USB 1.1 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.

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

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.YF173)

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.YF173)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.YF173)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DIFFERENCE LIST

The following table indicate main different points between models GR-D750UC, GR-D750US, GR-D770UC, GR-D770US, GR-D771US, GR-D775US, GR-D790US and GR-D796US.

MODEL NAME GR-D750UC GR-D750US GR-D770UC

DSC

USB TERMINAL /USB CABLE

CD-ROM NO NO YES

BATTERY PACK

REMOTE CONTROL UNIT NO NO NO

MODEL NAME GR-D770US GR-D771US GR-D775US

DSC

USB TERMINAL /USB CABLE

CD-ROM YES YES YES

BATTERY PACK

REMOTE CONTROL UNIT NO NO YES(RM-V740US)

NO NO YES

BN-VF808US BN-VF808US BN-VF808US

YES YES YES

BN-VF808US BN-VF808US BN-VF808US

MODEL NAME GR-D790US GR-D796US

DSC

USB TERMINAL /USB CABLE

CD-ROM YES YES

BATTERY PACK

REMOTE CONTROL UNIT YES(RM-V740US) NO

YES YES

BN-VF808US BN-VF808US(×2)

(No.YF173)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 0.088N

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

(0.9kgf

·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.

· 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.

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

Wire

Lock

FPC 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]

PART

TOP COVER ASSY UPPER ASSY (Inc. VF ASSY, SPEAKER/MONITOR)

[8]

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.YF173)

3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS

zDisassembly procedure

STEP

PART NAME

No.

[1]

UPPER ASSY

[2]

CASS.COVER

[3]

TOP COVER

[4]

VF ASSY

[5]

LOWER ASSY

[6]

POWER UNIT

[7]

FRONT ASSY

[8]

MIC

[9]

REAR COVER ASSY

/[10]

REAR BOARD ASSY

[10]

REAR BOARD ASSY

[11]

OP BLOCK ASSY

[12]

BKT TOP

[13]

MAIN BOARD ASSY

[14]

MECHANISSM ASSY

[15]

BUTTON UNIT

[16]

JUNCTION BOARD ASSY

[17]

COVER UPPER

[18]

MONITOR ASSY

[19]

SPEAKER

Fig. No.

FA1-1

FA1-2

FA2

FA3

FA4

FA5

FA6

FA7

FA8

FA9

FA10

FA11

UA1

UA2

UA3

POINT NOTE

2(S1a),2(S1b),3(S1a),(S1d),

L1a,b,c,d,e,f,g,3(L1h),L1j,CN1

2(L2a),4(S2),3(L2b)

2(S3),2(L3)

CN4a,b,S4a,S4b

COVER(JACK),CN5,2(S5a),

S5b,S5c,2(S5b),2(L5)

2(S6),2(L6a),2(L6b),L6c

S7,L7a,b,CN7

S8,PLATE(MIC)

2(S9),L9a,b,CN9

S10

CN11,2(L11)

4(S12),2(L12a),L12b

CN13a,b,c,d,e,S13,L13

L14,4(S14)

CN15,L15a,S15,L15,b,c,d,e,

CN16a,b

2(S17)

2(S18),2(L18)

5(S19),L19a,b,c,d,BKT(HINGE),

KNOB(SILDE),KNOB(EJIECT),

BKT(GROUND)

NOTE1a,b,c,d

NOTE2

NOTE4a,b

NOTE5a,b

NOTE6a,b

NOTE8

NOTE9

NOTE11a,b

NOTE14

NOTE15

NOTE16a,b,c

NOTE17

NOTE18

NOTE19a,b

NOTE1a:

When removing the screw(No.6), open the MONITOR ASSY. When removing the UPPER ASSY, close the MONITOR ASSY.

NOTE1b:

When attaching, be careful with the wiring.

• Place the FPC(BUTTON) in the FOOK properly. Place the WIRES(SPEAKER) properly between the GUIDE.

•

• Fold the FPC(JUNCTION) properly.

NOTE1c:

During the procedure, be careful not to damage the parts.

NOTE1d:

When attaching, fully pull up the KNOB(EJECT) to the OP BLOCK as shown in the figure.

NOTE2:

When removing, remove the two screws (No.9, 10) with the CASSETTE COVER open.

NOTE4a:

When removing, first pull out the FPC that connects the CCD BOARD ASSY and the MAIN BOARD ASSY as the FPC interferes with the procedure.

NOTE4b:

Refer to 3.2.3 DISASSEMBLY OF [4] VF ASSEMBLY for the disassembly of VF ASSY.

NOTE5a:

When removing, be careful in handling the parts. Pay special attention not to break fragile sections.

NOTE5b:

Screw No.15 is located under the COVER(JACK).

NOTE6a:

Be careful in handling the POWER UNIT as it consists of three parts, and the parts are connected by the FPC.

NOTE6b:

NOTE8:

When attaching, be careful in wiring.

NOET9:

During the procedure, be careful not to damage the EJECT SWITCH. During the procedure, leave the CASSETTE COVER closed.

NOTE11a:

When attaching, do not connect the CCD MAIN BOARD FPC to the MAIN BOARD first, connect the FPC after attaching the VF ASSY.

NOTE11b:

Refer to 3.2.5 BLOCK ASSMBLY/CCD BOARD ASSEMBLY ASSY.

NOTE14:

When removing, be careful not to damage the parts or cut the wires.

NOTE15:

During the procedure, be careful not to damage the parts. When attaching, be careful with the wiring.

NOTE16a:

When attaching, be careful with the locations of the SWITCH and the KNOB(VID/MEM SW). (DSC MODEL ONLY)

NOTE16b:

During the procedure, be careful not to damage the SWITCH. When attaching, leave the MONITOR ASSY open.

NOTE16c:

When attaching, be careful with the wiring of the WIRE (SPEAKER).

NOTE17:

When removing, push the COVER from the backside, and be careful in handling the parts.

NOTE18:

Refer to 3.2.4 BLY

for the disassembly of the MONITOR ASSY.

NOTE19a:

During the procedure, be careful in handling the parts.

NOTE19b:

When attaching, be careful with the wiring and the attachment locations of the parts.

zDestination of connectors

CN.

No.

CN1 MAIN CN103 JUNCTION CN401 26 CN4a MAIN CN4201 CCD CN5001 20 CN4b MAIN CN7801 VF CN7001 18 CN5 MAIN CN105 CN7 MAIN CN2601 MIC - 4 CN9 MAIN CN101/CN106 REAR CN501/CN504 40/34 CN11 MAIN CN4901 OP BLOCK ASSY CN13a MAIN CN1604 SENSOR - 16 CN13b MAIN CN1603 CAPSTAN MOTOR CN13c MAIN CN1602 DRUM MOTOR - 11 CN13d MAIN CN3501 HEAD - 8

CN13e MAIN CN1601 /ROTARY ENCODER

CN15 JUNCTION CN403 BUTTON UNIT - 6 CN16a JUNCTION CN404 SPEAKER - 2 CN16b JUNCTION CN402 MONITOR CN7601 22

When attaching, be sure to attach firmly.

ASSEMBLY/DISASSEMBLY OF [11] OP

of OP BLOCK

DISASSEMBLY OF [18] MONITOR ASSEM-

- 12

- 26

- 18

PIN No.

CONNECTOR

POWER UNIT

LOADING MOTOR

(No.YF173)1-7

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