JVC GRFC1UM - Service Manual Immediate Download

SERVICE MANUAL

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

Formato

: Norma NTSC VHS

Alimentación

: DC 9 V

Consumo de energía

: 3,4 W

Sistema de señales

: Tipo NTSC

Sistema de registro de video

Luminancia

: Registro por FM

Color

: Registro directo por

subportadora convertida

Según la norma VHS

Cassette

: Videocassette

Velocidad de la cinta

: 33,35 mm/s

Tiempo máximo de

grabación

: 40 minutos

Temperatura de

funcionamiento

:10

°C a 40°C

Margen de humedad

para funcionamiento : 35% a 80%

Temperatura de

almacenamiento

: 20

°C a 50°C

Peso

: Aprox. 590 g

Algunos accesorios no se encuentran disponibles

en ciertas áreas. Por favor consulte a su agente

más cercano de JVC antes de comprar los

accesorios opcionales.

Los especifiaciones indicadas corresponden al modo SP a menos que se especifique lo contrario. Diseño

y especificaciones sujetos a cambio sin previo aviso.

Accesorios opcionales

· VHS (

) Compacto (cassettes VHS-C)

TC-40/30/20

· Bolso CB-V7U

· Adaptador de Cassete C-P7U

Dimensiones

: 65 mm x 115 mm x

(An x Al x Pr)

182 mm

(con el visor

completamente inclinado

hacia abajo)

Fonocaptor

: CCD de 1/6"

Objetivo

: F3,5, f = 3.2 mm

Ajuste del balance del

blanco

: Automático

No.86744

2003/05

GR-FC1UM,

VU-FC1KUS

GR-FC1UM M3A1

VU-FC1KUS M3ACC

CÁMARA DE VIDEO VHS COMPACTO

ESPECIFICACIONES

- GR-FC1UM -

- VU-FC1KUS -

Important Safety Precautions

INSTRUCTIONS

GR-FC1UM

1. DISASSEMBLY

1.1

BEFORE ASSEMBLY AND DISASSEMBLY ............................ 1-1

1.1.1 Precautions ........................................................................... 1-1

1.1.2 Assembly and disassembly ................................................... 1-1

1.1.3 Destination of connectors ..................................................... 1-1

1.1.4 Disconnection of Connectors (Wires) ................................... 1-1

1.1.5 Tools required for disassembly and assembly ...................... 1-1

1.2

DISASSEMBLY/ASSEMBLY OF CABINET PARTS ................. 1-2

1.2.1 Disassembly flow chart ......................................................... 1-2

1.2.2 Disassembly method ............................................................. 1-2

1.3

EMERGENCY DISPLAY .......................................................... 1-5

1.4

TAKE OUT CASSETTE TAPE ................................................. 1-5

1.5

SERVICE NOTE ...................................................................... 1-6

2. MECHANISM

Refer to the SERVICE MANUAL No.86700(MECHANISM ASSEMBLY)

3. ADJUSTMENT

3.1

PREPARATION ........................................................................ 3-1

3.2

TOOLS REQUIRED FOR ADJUSTMENT ............................... 3-1

3.3

MECHANISM ADJUSTMENT .................................................. 3-3

3.3.1 TAPE TRANSPORT ADJUSTMENT ..................................... 3-3

3.3.2 Back tension ......................................................................... 3-3

3.3.3 Tape pattern .......................................................................... 3-3

3.3.4 A/C head height & azimuth ................................................... 3-4

3.3.5 Phase of control head (X value) ............................................ 3-5

3.4

ELECTRICAL ADJUSTMENT .................................................. 3-6

3.4.1 ELECTRICAL ADJUSTMENT WITH PERSONAL COMPUTER . 3-3

4. CHARTS AND DIAGRAMS

4.1

BOARD INTERCONNECTIONS .............................................. 4-3

4.2

MAIN(CPU) SCHEMATIC DIAGRAM ...................................... 4-5

4.3

MAIN(M.MDA) SCHEMATIC DIAGRAM .................................. 4-7

4.4

MAIN(DSP) SCHEMATIC DIAGRAM ....................................... 4-9

4.5

MAIN(REG) SCHEMATIC DIAGRAM ..................................... 4-11

4.6

MAIN(VTR ASP) SCHEMATIC DIAGRAM ............................. 4-13

4.7

MAIN(TG/CDS) SCHEMATIC DIAGRAM .............................. 4-15

4.8

CCD SCHEMATIC DIAGRAM ................................................ 4-16

4.9

MAIN CIRCUIT BOARD ......................................................... 4-17

4.10 CCD CIRCUIT BOARD .......................................................... 4-21

4.11 POWER SYSTEM BLOCK DIAGRAM ................................... 4-22

4.12 CAMERA AND Y/C SYSTEM BLOCK DIAGRAM .................. 4-23

4.13 CPU/MDA SYSTEM BLOCK DIAGRAM ................................ 4-25

TABLE OF CONTENTS

Section

Title

Page

Section

Title

Page

5. PARTS LIST

5.1 EXPLODED VIEW ...................................................................... 5-1

5.1.1 PACKING AND ACCESSORY ASSEMBLY <M1> ................ 5-1

5.1.2 FINAL ASSEMBLY <M2> ...................................................... 5-2

5.1.3 MECHANISM ASSEMBLY <M3> .......................................... 5-4

5.2 PARTS LIST ................................................................................ 5-5

PACKING AND ACCESSORY PARTS LIST<M1> .......................... 5-5

FINAL PARTS LIST<M2> ................................................................ 5-5

MECHANISM PARTS LIST<M3> .................................................... 5-5

MAIN BOARD ASSEMBLY <01> .................................................... 5-7

CCD BOARD ASSEMBLY <02> ..................................................... 5-9

VU-FC1KUS

6. PARTS LIST

6.1 PACKING AND ACCESSORY ASSEMBLY<M1> ....................... 6-1

Important Safety 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.

Fig.1

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 com-

ply 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 com-

ply 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:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

5. Use specified insulating materials for hazardous live parts.

Note especially:

1) Insulation Tape

3) Spacers

5) Barrier

2) PVC tubing

4) Insulation sheets for transistors

6. When replacing AC primary side components (transformers,

power cords, noise blocking capacitors, etc.) wrap ends of

wires securely about the terminals before soldering.

Power cord

Fig.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 cath-

ode 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 connector

In such cases as when replacing the power transformer in sets

where the connections between the power cord and power

transformer primary lead wires are performed using crimp type

connectors, if replacing the connectors is unavoidable, in or-

der to prevent safety hazards, perform carefully and precisely

according to the following steps.

1) Connector part number : E03830-001

2) Required tool : Connector crimping tool of the proper type

which will not damage insulated parts.

3) Replacement procedure

(1) Remove the old connector by cutting the wires at a point

close to the connector.

Important : Do not reuse a connector (discard it).

Fig.7

cut close to connector

Fig.3

(2) 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.4

(3) Align the lengths of the wires to be connected. Insert

the wires fully into the connector.

Connector

Metal sleeve

Fig.5

(4) As shown in Fig.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.

Precautions during Servicing

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.

1.25

2.0

5.5

Crimping tool

Fig.6

(5) Check the four points noted in Fig.7.

Not easily pulled free

Crimped at approx. center

of metal sleeve

Conductors extended

Wire insulation recessed

more than 4 mm

S40888-01

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 compli-

ance 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 table 1 below.

3. Clearance distance

When replacing primary circuit components, confirm specified clearance distance (d), (d') be-

tween soldered terminals, and between terminals and surrounding metallic parts. See table 1

below.

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 accessi-

ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and

following table 2.

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 figure 10 and grounding specifications.

Chassis

Power cord,

primary wire

Region

USA & Canada

Europe & Australia

Grounding Impedance (Z)

0.1 ohm

0.5 ohm

AC inlet

Earth pin

Exposed accessible part

Milli ohm meter

Grounding Specifications

Fig. 10

Externally

exposed

accessible part

Fig. 9

Fig. 8

Clearance Distance (d), (d')

d, d'

3 mm

d, d'

4 mm

d, d'

3.2 mm

1 M

R 12 M/500 V DC

Dielectric Strength

AC 1 kV 1 minute

AC 1.5 kV 1 miute

AC 1 kV 1 minute

AC Line Voltage

100 V

100 to 240 V

110 to 130 V

200 to 240 V

Japan

USA & Canada

Europe & Australia

10 M

/500 V DC

Region

Insulation Resistance (R)

1 M

/500 V DC

AC 3 kV 1 minute

(Class

AC 1.5 kV 1 minute

(Class

4 mm

8 mm (Power cord)

6 mm (Primary wire)

Table 1 Specifications for each region

a, b, c

Leakage Current (i)

AC Line Voltage

100 V

110 to 130 V

220 to 240 V

Japan

USA & Canada

1 mA rms

Exposed accessible parts

Antenna earth terminals

Other terminals

0.5 mA rms

0.7 mA peak

2 mA dc

0.7 mA peak

2 mA dc

Europe & Australia

Region

Load Z

1 k

2 k

1.5 k

0.15

µF

50 k

Table 2 Leakage current specifications for each region

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

S40888-01

1-1

SECTION 1

DISASSEMBLY

1.1.4 Disconnection of Connectors (Wires)

Pull both ends of the connector in the arrow direction, remove

the lock and disconnect the flat wire.

1.1 BEFORE ASSEMBLY AND DISASSEMBLY

1.1.1

Precautions

1. Be sure to disconnect the power supply unit prior to mount-

ing and soldering of parts.

2. Prior to removing a component part that needs to discon-

nect its connector(s) and its screw(s), first disconnect the

wire(s) from the connector(s), and then remove the screw(s).

3. When connecting/disconnecting wires, pay enough atten-

tion not to damage the connectors.

4. Be careful in removing or handling the part to which some

spacer or shield is attached for reinforcement or insulation.

5. When replacing chip parts (especially IC parts), first remove

the solder completely to prevent peeling of the pattern.

6. Tighten screws properly during the procedures. Unless

specified otherwise, tighten screws at a torque of 0.196N·m

(2.0kgf·cm).

1.1.2 Assembly and disassembly

[Example]

(1) Order of steps in Procedure

When reassembling, preform the step(s) in the reverse or-

der. These numbers are also used as the identification (lo-

cation) No. of parts Figures.

(2) Part to be removed or installed.

(3) Fig. No. showing Procedure or Part Location.

= CABINET

= CAMERA AND BOARD ASSEMBLY

(4) Identification of part to be removed, unhooked, unlocked,

released, unplugged, unclamped or unsoldered.

= Spring

= Washer

= Screw

= Unhook, unlock, release, unplug or unsolder.

2(S3) = 2 Screws (S3)

= Connector

(5) Adjustment information for installation.

1.1.3 Destination of connectors

Two kinds of double-arrows in connection tables respec-

tively show kinds of connector/wires.

: Wire

: Flat wire (FPC, FFC)

[Example]

Remove the parts marked in

Fig. 1-1-1

Connector

Flat wire

Fig. 1-1-2

Connector

Flat wire

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.

LOWER CASE ASSEMBLY

B/W VF ASSEMBLY

TOP OPE UNIT

CASE COVER(S) ASSEMBLY

CASE COVER(M) ASSEMBLY

Fig.C1

Fig.C2

8(S1),CN1a,b,c

3(S2)

CN3,L3a,2(L3b)

(S4),2(L4)

[1]

[2]

[3]

[4]

STEP

No.

PART

NOTE

Fig.

No.

POINT

(4)

(5)

(2)

(3)

(1)

CONN.

No.

Pin No.

CONNECTOR

CN1a MAIN

CN27

SPEAKER

1.1.5 Tools required for disassembly and assembly

Pull both ends of the connector in the arrow direction, remove

the lock and disconnect the flat wire.

1. Torque driver

Be sure to use to fastening the mechanism and exterior parts

because those parts must strictly be controlled for tighten-

ing torque.

2. Bit

This bit is slightly longer than those set in conventional

torque drivers.

3. Cleaning cloth

Recommended cleaning cloth to wipe down the video

heads, mechanism (tape transport system), optical lens sur-

face.

Torque driver

YTU94088

Bit

YTU94088-003

Cleaning cloth

KSMM-01

Fig. 1-1-3