JVC GZ-MG555US Service Manual

SERVICE MANUAL

HARD DISK CAMCORDER

YF18320074SERVICE MANUALEverio

GZ-MG555US

GZ-MG555US [M7E855]

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

No.YF183

2007/4

SPECIFICATION

Camcorder

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

DC 7.2 V (Using battery pack)

Power consumption Approx. 3.9 (4.1)* W

*When using the LED light Approx. 6.8 W (Maximum; when charging a battery)

Dimensions (W × H × D) 74 mm × 72 mm × 118 mm (2-15/16" × 2-7/8" × 4-11/16" )

Weight Approx. 425 g (0.94 lbs) (incl.strap)

Approx. 470 g (1.1 lbs) (incl. battery and strap)

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 1/2.5" (5,370,000 pixels) CCD Lens F 3.5, f = 6.3 mm to 63 mm, 10:1 power zoom lens Filter diameter Ø46.0 mm LCD monitor 2.7" diagonally measured, LCD panel/TFT active matrix system Speaker Monaural Frash Within 2 m (6.6 ft) (recommended shooting distance) LED Light Within 1.5 m (4.9 ft) (recommended shooting distance)

For Video/Audio Format SD-VIDEO

Recording/Playback format

Signal format NTSC standard

Recording mode (video) ULTRA FINE: 720 × 480 pixels, 8.5 Mbps (VBR)

Recording mode (audio) ULTRA FINE: 48 kHz, 384 kbps

For Still image Format JPEG

Image size 7 modes

Picture quality 2 modes (FINE/STANDARD)

For connectors DV output 4-pin (I.LINK/IEEE1394 compliant)

S input/output Input: Y: 0.8 V (p-p) ~ 1.2 V (p-p), 75Ω, C: 0.2 V (p-p) ~ 0.4 V (p-p), 75Ω

AV input/output Video input 0.8 V (p-p) ~ 1.2 V(p-p), 75 Ω

USB Mini USB type A and type B, USB 2.0 compliant

Video MPEG-2 Audio Dolby Digital (2 ch)

FINE: 720 × 480 pixels, 5.5 Mbps (VBR) NORMAL: 720 × 480 pixels, 4.2 Mbps (VBR) ECONOMY: 352 × 240 pixels, 1.5 Mbps (VBR)

FINE: 48 kHz, 384 kbps NORMAL: 48 kHz, 256 kbps ECONOMY: 48 kHz, 128 kbps

(2592 × 1944/2304 × 1728/1600 × 1200/640 × 480/2592 × 1456/ 1920 × 1080/1280 × 720)

Output: Y: 1.0 V (p-p), 75Ω, C: 0.29 V (p-p), 75Ω

Video output 1.0 V (p-p), 75 Ω Audio input 300 mV (rms),50 kΩ Audio output 300 mV (rms), 1 kΩ

AC Adapter

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

Remote Control

Power supply DC 3 V Battery life Approx. 1 year (depending on the frequency of use) Operating distance Within 5 m (16.4 ft)

Operating temperature 0°C to 40°C (32°F to 104°F) Dimensions (W × H × D) 42 mm × 14.5 mm × 91 mm (1-11/16" × 5/8" × 3-5/8")

Weight Approx. 30 g (0.07 lbs) (incl. battery)

Design and specifications subject to change without notice.

1-2 (No.YF183)

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.YF183)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.YF183)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 Replacing HDD

NOTE) After HDD replacement, format the HDD first.

When the power is turned on after the HDD replacement, the below "Warning screen" is displayed. Be sure to format the HDD following the messages. Be sure to turn off the power once after the formatting. If the HDD recording is started without being turned off the power, normal recording cannot be performed although the recording will start.

0''&61(14/#6*#4&&+5-&4+8'

&1;179#0661(14/#6!

#..#9+..$''4#5'&

㪜㪯㪜㪚㪬㪫㪜

㪚㪘㪥㪚㪜㪣

㪪㪜㪣㪜㪚㪫㪪㪜㪫

(No.YF183)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 0.078N

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

(0.8kgf 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

FPC Connector

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

Wire

FPC Connector

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

Wire

Lock

FPC Connector

B-B Connector

· 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.

Wire

FPC Connector

Lock

B-B Connector

Fig.3-1-1

·m

Lock

Wire

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.YF183)

3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS

z Disassembly procedure

STEP

PART NAME

No.

[1]

B. COVER(5M) ASSY

[2]

SHOE ASSY

[3]

TOP COVER

[4]

HDD COVER ASSY

[5]

HDD

[6]

HDD CASE ASSY

[7]

BKT(HOOK)

[8]

OPE UNIT

[9]

DIAL UNIT

[10]

REAR COVER ASSY

[11]

BATT BOARD ASSY

[12]

UPPER ASSY

[13]

FRONT ASSY

[14]

MAIN BOARD ASSY

[15]

SHIELD MAIN ASSY

[16]

OP BLOCK ASSY

[17]

MIC BOARD ASSY

[18]

SENS BOARD ASSY

[19]

STROBE UNIT

[20]

MIC

[21]

OPE. BOARD ASSY

[22]

SPEAKER

[23]

COVER(HINGE)

[24]

MONITOR ASSY

Fig. No.

3-2-1

3-2-2

3-2-3-1

3-2-3-2

3-2-4

3-2-5

3-2-6

3-2-7

3-2-8

3-2-9

3-2-10

3-2-11

3-2-12

3-2-13

3-2-14

3-2-15

3-2-16

3-2-17

3-2-18

3-2-19

3-2-20-1

3-2-20-2

3-2-21-1

3-2-21-2

3-2-22

3-2-23

POINT NOTE

4(S1),L1a,3(L1b)

2(S2),

2(L3)

GRIP BELT2(S4a)

2(S4a),S4b,L4a,b,c,d

GASKETCN5

4(S6a),S6b

S7,L7

CN8,S8a,b,L8a,b,c

CN9,S9a,b,L9

4(S10a),S10b,L10

S11,2(L11),CN11

CN12,3(S12),L12a,2(L12b)

CN13a,b,c,d,3(S13),L13a,

2(L13b)

CN14a,b,2(S14)

3(S15)

3(S16),FRAME ASSY

S17

(S18),2(L18)

3(S19),(L19)

S20a,b,

COVER (MIC) ASSY

CN21a,4(S21),2(L21a),

L21b,CN21b

SPACER,2(S22),

L22a,b,c,BKT(SPEAKER)

(S23)

2(S24),2(L24)

NOTE1

NOTE4

NOTE5a,b,c,d,e,f,g

NOTE8

NOTE11a,b

NOTE12a,b

NOTE13a,b,c

NOTE14

NOTE16a,b

NOTE17

NOTE19a,b

NOTE20

NOTE21a,b,c

NOTE22

NOTE24a,b

NOTE1:

When removing the BOTTOM COVER ASSY, open and pull up the COVER (SD).

NOTE4:

Pull out the GRIP BELT from the hook and leave it released before removing the HDD COVER ASSY.

NOTE5a:

Remove the GASKET before starting the procedure.

NOTE5b:

During the procedure, be careful in handling the parts. Pay special attention not to give any external shock to the HDD.

NOTE5c:

When the HDD is replaced, be sure to refer to 2.1 Replacing HDD in "SECTION2 SPECIFIC SERVICE INSTRUCTIONS" for the procedure after HDD replacement.

NOTE5d:

Be careful as the GELS at the four corners are easily come off when the HDD is removed from the main unit. If the GELS come off, be sure to attach them in the correct direction shown in the figure. Attach the GELS with their HOLES on the same side of the connector.

NOTE5e:

When connecting the FPC to the connector, insert the FPC straight into the connector. When locking the connector, be careful not to give so much load that it bends the board.

NOTE5f:

In this procedure, the FPC connected to the HDD connector is not removed. If the FPC is removed due to broken wire, be careful in attachment direction. Be sure to connect the STOPPER side to the HDD. Pay attention as wrong attachment could damage the HDD.

NOTE5g:

Be careful with the wiring.

NOTE8:

When attaching, fit the guide pin into the hole.

NOTE11a:

During the procedure, do not touch the terminals (electrodes).

NOTE11b:

When attaching, be careful with the wiring .

NOTE12a:

During the procedure, be careful to avoid electric shock caused by the STROBE CAPACITOR. During the procedure, be careful to avoid electric shock.

NOTE12b:

Refer to [21] OPE BOARD ASSY and afterward for the disassembly of UPPER ASSY.

NOTE13a:

During the procedure, be careful to avoid electric shock caused by the STROBE CAPACITOR.

NOTE13b:

When attaching, be careful with the wiring (MIC).

NOTE13c:

Refer to [17] MIC BOARD ASSY and afterward for the disassembly of FRONT ASSY.

(No.YF183)1-7

NOTE14:

When attaching, be careful with the wiring (STROBE).

NOTE16a:

Be careful in handling the HEAT SHEET.Pay special attention as it is easily peel off and soiled.

NOTE16b:

Refer to 3.2.3

DISASSEMBLY OF [16] OP BLOCK ASSY/

CCD BOARD ASSY of OP BLOCK ASSY.

NOTE17:

When attaching, remove the JACK COVER (MIC) to check if the terminal is placed in the hole.

NOTE19a:

During the procedure, do not touch the CAPACITOR, and be careful to avoid electric shock caused by the STROBE CAPACITOR.

NOTE19b:

During the procedure, be careful not to catch the WIRE (MIC).

NOTE20:

When attaching, fix the SPACER and the MIC tight so that there is no space between them.

NOTE21a:

When removing, remove the screw No.49 first to release the FPC, and then pull out the FPC from the connector.

NOTE21b:

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

NOTE21c:

When attaching, be careful with the wiring.

NOTE22:

When attaching, be careful with the wiring.

NOTE24a:

During the procedure, be careful in handling the FPC.

NOTE24b:

Refer to 3.2.4 DISASSEMBLY OF [24] MONITOR ASSY of MONITOR ASSY.

z Destination of connectors

CN. No.

CONNECTOR

PIN No.

CN5 MAIN CN102 HDD - 40 CN8 MAIN CN104 OPE.UNIT - 10 CN9 MAIN CN114 DIAL OPE

- 12 CN11 MAIN CN103 BATT. - 6 CN12 MAIN CN101 OPE CN401 30 CN13a MAIN CN109 STROBE - 14 CN13b MAIN CN107 MIC(INT) - 4 CN13c MAIN CN113 SENS CN101 8 CN13d MAIN CN112 MIC - 4 CN14a MAIN CN105 CCD CN4201 39 CN14b MAIN CN106 OP BLOCK - 39 CN21a OPE CN402 MONITOR CN7601 22/23 CN21b OPE CN403 SPEAKER - 2

1-8 (No.YF183)

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