JVC GR-FX17EK, GR-FX17EX, GR-FX17EY, GR-FX17EZ, GR-SX170AG Service Manual

SERVICE MANUAL

COMPACT VHS CAMCORDER

YF06920052

GR-FX17EK, GR-FX17EX,

GR-FX17EY, GR-FX17EZ,

GR-SX27EZ, GR-SX170AG

VHS
PAL

625

GR-FX17EK, GR-FX17EX,
GR-FX17EY, GR-FX17EZ[M5A6B2]
GR-SX27EZ,GR-SX170AG[M5C6B2]

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

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.YF069

2005/2

SPECIFICATION

General Format S-VHS (GR-SX27EZ,GR-SX170AG only) / VHS PAL standard

Power source DC 11 V (Using AC Adapter)

DC 6 V (Using battery pack)

Power consumption Viewfinder on 3.5 W

Signal system PAL-type

Video recording system Luminance FM recording

Colour Converted sub-carrier direct recording Conforms to VHS standard

Cassette / cassette

Tape speed SP 23.39 mm/sec.

LP 11.70 mm/sec.

Recording time (max.) SP 60 minutes

LP 120 minutes (with EC-60 cassette)

Operating temperature 0°C to 40°C

Operating humidity 35% to 80%

Storage temperature -20°C to 50°C

Weight Approx. 690 g

Dimensions (W × H × D) 75 mm × 124 mm × 221 mm

Pickup 1/6" format CCD

Lens F1.8 f = 2.2 mm to 55 mm 25:1 power zoom lens with auto iris and macro con-

trol filter diameter 40.5 mm

Viewfinder Electronic viewfinder with 0.24" black/white LCD

White balance adjustment Auto/Manual adjustment

Connectors Video 1 V (p-p), 75 Ω unbalanced, analogue output (via Video output connector)

Audio 300 mV (rms), 1 kΩ, analogue output (via Audio output connector)

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.YF069)

SECTION 1

r

e

PRECAUTION

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 sleev

Conductors extended

Fig.1-1-7

(No.YF069)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.

d

Chassis

d'

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.

ab

Externally
exposed
accessible part

Z

V

c

A

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

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

110 to 130 V

220 to 240 V

Region

Japan

USA & Canada

Europe & Australia

Load Z

1

0.15

1.5

2

50

Leakage Current (i)

i 1 mA rms

i 0.5 mA rms

i 0.7 mA peak
i 2 mA dc

i 0.7 mA peak
i 2 mA dc

a, b, c

Exposed accessible parts

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.YF069)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DIFFERENCE LIST

The following table indicate main different points between models GR-FX17EK, GR-FX17EX, GR-FX17EY, GR-FX17EZ, GR­SX27EZ and GR-SX170AG.

MODEL GR-FX17EK GR-FX17EX GR-FX17EY GR-FX17EZ GR-SX27EZ GR-SX170AG

TAPE FORMAT VHS-C VHS-C VHS-C VHS-C S-VHS-C S-VHS-C

AC CORD NO NO NO NO NO CEE PLUG

CASSETTE ADAPTER OPTIONAL OPTIONAL OPTIONAL OPTIONAL OPTIONAL

CABLE ADAPTER

YES(WITHOUT

S TERMINAL)

YES(WITHOUT

S TERMINAL)

YES(WITHOUT

S TERMINAL)

YES(WITHOUT

S TERMINAL)

YES(WITHOUT

S TERMINAL)

PROVIDE

(C-P8U)

NO

(No.YF069)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
specified otherwise, tighten screws at a torque of 0.196N

·cm). However, 0.196N·m (2.0kgf·cm) is a value at the

(2.0kgf
time of production. At the time of service, perform the
procedure at a torque 10% less than 0.196N

·m (2.0kgf·cm).

(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

MIC 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.

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

· 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

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

·m

40

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)
VF ASSY

(∗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.

C = CABINET

(∗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.

Fig.C1
Fig.C2-1

Fig.C2-2

POINT

S1,2(L1)
S2a,2(S2b),3(S2c)
2(S2d),S2e,S2c
L2,CN2a,b
2(S8),L8,CN8a

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

NOTE

-

-

NOTE 8a
NOTE 8b

1-6 (No.YF069)

Fig.3-1-2

3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS

zDisassembly procedure

STEP

PART NAME

No.

[1]

CASE COVER(S) ASSY

[2]

LOWER CASE ASSY

[3]

TOP COVER ASSY
(Inc.TOP BOARD ASSY,VF ASSY)

[4]

TOP BOARD ASSY

[5]

VF ASSY

[6]

UPPER CASE(S) ASSY

[7]

FRONT COVER ASSY
Inc. MIC

[8]

FRONT BOARD ASSY

[9]

MIC

[10]

FRONT FRAME SA

[11]

MAIN BOARD ASSY

[12]

OP FRAME ASSY

[13]

BRACKET OP ASSY

[14]

OP BLOCK ASSY

[15]

SIELD CASE(MAIN)

[16]

MECHANISM ASSY

[17]

REAR BOARD ASSY

[18]

FRAME ASSY

Fig.
No.

FA1

S1,2(L1)

FA2

7(S2),CN2
S3a,S3b,CN3a, CN3b

2(S4)
3(S5)

FA3

6(S6a),S6b,L6

FA4

CN7,S7,L7a,L7b

S8
S9
2(S10)

FA5

CN11a, b, c, d, e, f, g, h, 2(S11),
CN11j,L11

FA6

2(S12a), S12b
S13

-

FA7

S15a, S15b
2(S16a),S16b

FA8

2(S17)

-

POINT NOTE

-

-

-

­NOTE5
NOTE6

NOTE7a,b

-

-

NOTE10

-

-

-

NOTE14
NOTE15

-

-

-

zDestination of connectors

CN.NO.

CN2 MAIN CN13 ZOOM UNIT - 14

CN3a MAIN CN7301 B/W VF ASSY CN7401 14

CN3b MAIN CN18 TOP CN401 6

CN7 MAIN CN8 MIC - 2

CN11a MAIN CN3 CAPSTAN MOTOR - 18

CN11b MAIN CN7 A/C HEAD - 11

CN11c MAIN CN22 CCD CN5301 14

CN11d MAIN CN15 OP BLOCK ASSY - 24

CN11e MAIN CN4 LOADING MOTOR - 2

CN11f MAIN CN1 DRUM_MOTOR - 10

CN11g MAIN CN5 HEAD(VIDEO,FLY.E) - 11

CN11h MAIN CN2 SENSOR - 14

CN11j MAIN CN28 REAR_UNIT - 10

NOTE 5 :

For disassembly of the [5] VF ASSEMBLY, refer to 3.2.3 AS­SEMBLY/DISASSEMBLY OF [5] VF ASSEMBLY .

NOTE 6 :

Take care not to break or damage the FRAME.

NOTE 7a :

Take care not to damage the OP BLOCK ASSEMBLY when
and after the FRONT CASE ASSEMBLY is removed.

NOTE 7b :

Attachment of the WIRE

NOTE10 :

Screwing sequence should be in order here first and others.

NOTE 14 :

For disassembly of the CCD BOARD ASSEMBLY, refer to

3.2.4 ASSEMBLY/DISASSEMBLY OF [14]OP BLOCK AS­SEMBLY AND CCD BOARD ASSEMBLY.

NOTE 15 :

When attaching the MECHANISM ASSEMBLY to S.CASE
(MAIN), pull out the FPC CABLE not to be inserted between
the MECHANISM ASSEMBLY and S.CASE (MAIN).

CONNECTOR

PIN
NO.

(No.YF069)1-7