JVC GZMC200US - Service Manual Immediate Download

SERVICE MANUAL

No.YF059

2004/11

DIGITAL MEDIA CAMERA

YF059

2004

GZ-MC200US

TABLE OF CONTENTS

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

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

DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37

GZ-MC200US [M4S527]

1-2 (No.YF059)

SPECIFICATION

(No.YF059)1-3

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.

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.

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

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).

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.

Fig.1-1-4

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

Insert the wires fully into the 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.

Fig.1-1-6

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

Fig.1-1-7

Power cord

cut close to connector

15 mm

Connector

Metal sleeve

1.2

2.0

5.5

Crimping tool

Not easily pulled free

Crimped at approx. center

of metal sleeve

Conductors extended

Wire insulation recessed

more than 4 mm

1-4 (No.YF059)

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.

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.

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.

Fig.1-1-10

Fig.1-1-11

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.

Chassis

Power cord

primary wire

Externally

exposed

accessible part

Exposed accessible part

Grounding Specifications

AC inlet

Region

USA & Canada

Europe & Australia

Grounding Impedance (Z)

0.1 ohm

0.5 ohm

Earth pin

MIlli ohm meter

AC Line Voltage

Region

Japan

Europe & Australia

R 1 M /500 V DC

USA & Canada

1 M

R 12 M /500 V DC

R 10 M /500 V DC

Insulation Resistance (R)

Dielectric Strength

Clearance Distance (d), (d')

100 V

100 to 240 V

110 to 130 V

200 to 240 V

AC 1 kV 1 minute

AC 1.5 kV 1 minute

AC 1 kV 1 minute

(Class )

AC 3 kV 1 minute

AC 1.5 kV 1 minute

d, d'

3 mm

d, d'

4 mm

d, d'

3.2 mm

8 m m (Power cord)

6 m m (Primary wire)

4 m m

AC Line Voltage

Region

Japan

Europe & Australia

USA & Canada

Load Z

Leakage Current (i)

a, b, c

100 V

110 to 130 V

220 to 240 V

1 mA rms

0.5 mA rms

0.7 mA peak

2 mA dc

0.7 mA peak

2 mA dc

Exposed accessible parts

Antenna earth terminals

Other terminals

1.5

0.15

(No.YF059)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1

Handling Microdrives

Microdrives are used in GZ-MC100 and GZ-MC200. Although the appearance is different, a Microdrive is exactly the same as a hard

disc that is used in a PC. Therefore, unlike handling conventional tapes, caution must be paid in handling Microdrives.

The handling of Microdrives is explained in this section.

2.1.1 The structure of Microdrives

The detailed inside structure of Microdrives is not disclosed as it is treated as trade secrets. However, it is essential to have knowledge

of the structure of Microdrives in order to carry out service properly. Some information about Microdrives is given here.

A Microdrive is mainly consisted of the following parts.

· A magnetic recording disk that is coated with magnetic ma-

terial. (Disk)

· A reading/ writing head. (Head)

· A motor that turns the disk.

· A circuit board that is loaded with electrical circuit which con-

trols the motor, the head positioning, and input/ output of the

signal.

1 head type Microdrives use one side of the disk, and 2 head type

Microdrives use both sides of the disk with heads on each side

of the disk.The disk and the head do not contact and there is

certain space kept between them. The head reads the pre

recorded servo information to control the head itself. When the

head is not in access to the disk, it is kept in a shelter to avoid

damaging the disk with shocks from outside.

The difference between a 2GB Microdrive and a 4GB Microdrive

is only whether it has one head or two heads and there is no

difference in performance, as shown in the specification list. A

2.5 inch hard disk that is used in a note PC is shown as a

reference. As a 2.5 inch hard disk is bigger than a Microdrive, it

has more disks and heads resulting in more capacity. On the

contrary, it seems impossible to increase the disks for a

Microdrive because of size restriction. High capacity will be

achieved by improving the areal density and rotation speed of the

future products.

Shock tolerance during non-operation is remarkably high. Micro-

drives are designed to tolerate shock during non-operation as

they are removed or carried out more often than other hard disks.

However, Microdrives are vulnerable to falls and shocks just like

other precision instruments.

Microdrives are made in conformity with the standard of Com-

pactFlash Type II. The thickness of the drive is less than 5.5mm,

thus failures can occur by folding or twisting the disks. The stan-

dard for torsional stress is 6kg approx. and for flexing stress is

4kg approx. Be sure to carry Microdrives in protection cases on

the service sites, and strongly recommend the customers to do

so, too.

hard disk

2GB

4GB

80GB

Model name

Microdrive 3K4-2

Microdrive 3K4-4

Travelstar 4K80-80

Model number

HMS360402D5CF00

HMS360404D5CF00

HTS428080F9AT00

Capacity

2 GB

4 GB

80 GB

Interface

CompactFlash Type

ATA ATA-6

Form factor

1inch

2.5inch

System type

Consumer electronics

Laptop

Cache buffer

128 KB

8 MB

Disks / Heads

1/1

1/2

2/4

Rotational speed (RPM)

3,600 (RPM)

4,200 (RPM)

Media transfer rate

97.9 Mb/sec max

351 Mb/sec max

Interface transfer rate

33 MB/sec max

100 MB/sec max

Average seek (ms)

12 (ms)

13 (ms)

Average latency (ms)

8.33 (ms)

7.1 (ms)

Areal density

56.5 Gb/sq. inch

68.5 Gb/sq. inch

Typical idle acoustic (Bels)

2.4B

Operating shock (G)

200 G (2ms)

250 (2ms)

Non-operating shock (G)

2000 G (1ms)

800 (1ms)

Operating ambient temperature (

70 (

55 (

)

Non-operating ambient temperature ( )

-40

70 (

)

-40

70 (

)

-40

70 (

)

Microdrive