JVC GZ-MG77US Service Manual

SERVICE MANUAL

HARD DISK CAMCORDER

YF14620064

GZ-MG67US, GZ-MG77US

GZ-MG67USM [M6E635],
GZ-MG77USM [M6E637]

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

COPYRIGHT © 2006 Victor Company of Japan, Limited

No.YF146

2006/4

SPECIFICATION

Camcorder

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

DC 7.2 V (Using battery pack)

Power consumption Approx. 4.6 W

Approx. 6.5 W (Maximum; when charging a battery)

Dimensions (W × H × D) 68 mm × 69 mm × 109 mm (2-11/16" × 2-3/4" × 4-5/16")

Weight Approx. 370 g (0.75 lbs) (without battery, lens cap and strap)

Approx. 430 g (0.89 lbs) (incl. battery, lens cap 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 1/3.9" (2,180,000 pixels) CCD
Lens F 1.2 to 2.0, f = 3.8 mm to 38 mm, 10:1 power zoom lens
Filter diameter Ø30.5 mm
LCD monitor 2.7" diagonally measured, LCD panel/TFT active matrix system
Speaker Monaural
Flash Within 2 m (6.6 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 4 modes (1632 × 1224 / 1280 × 960 / 1024 × 768 / 640 × 480)

Picture quality 2 modes (FINE/STANDARD)

For connectors AV S-Video output Y:1.0 V (p-p), 75Ω, analog, C:0.29V (p-p), 75Ω, analog

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

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

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) 45 mm × 13 mm × 105 mm (1-13/16" × 1-1/2" × 4-3/16")

Weight Approx. 40 g (0.09 lbs) (incl. battery)

Design and specifications subject to change without notice.

1-2 (No.YF146)

SECTION 1

r

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.YF146)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.YF146)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1 DIFFERENCE LIST

The following table indicate main different points between models GZ-MG67US and GZ-MG77US.

MODEL NAME GZ-MG67US GZ-MG77US

HDD(BUILT-IN) 20GB 30GB

(No.YF146)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 0.098N

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

(1.0kgf
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

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.

· 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.

· 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

FPC
Connector

Lock

B-B Connector

Fig.3-1-1

·m

40

10

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

C1

(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.YF146)

3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS

z Disassembly procedure

STEP

PART NAME

No.

[1]

BOTTOM COVER ASSY

[2]

HDD COVER ASSY

[3]

HDD

[4]

HDD CASE ASSY

[5]

TOP COVER(ZOOM)

[6]

ZOOM UNIT

[7]

REAR BOARD ASSY

[8]

MONI.LOCK CASE ASSY

[9]

COVER(HINGE-M)

[10]

UPPER ASSY

[11]

OPE BOARD ASSY

[12]

TOP COVER(U-M)ASSY

[13]

POWER SW ASSY

[14]

MONITOR ASSY

[15]

SPEAKER

[16]

FRONT COVER ASSY

[17]

MIC

[18]

STROBE UNIT

[19]

MAIN BOARD ASSY

[20]

OP BLOCK ASSY

Fig.
No.

CA1

FA1

FA2

FA3

FA4

FA5

UA1

FA6

UA2

UA3

UA4

UA5

FA7

FA8

FA9

FA10

POINT NOTE

3(S1),3(L1)

GRIP BELT,2(S2),

JACK COVER(DC),L2a,b,c,d

CN3

3(S4a),3(S4b)

CN5,JACK COVER(REAR),S5,L5a,b

SHIELD(ZOOM),2(S6),2(L6)

4(S7),L7a,JACK COVER(REAR),

CN7a,CN7b,L7b,REAR UNIT

2(S8),2(L8)

2(S9),L9

S10,L10,SHIELD(FRAME),

CN10,3(S10)

S11a,INTERRUPTER,

S11b,CN11a,b,3(S11b)

2(S12),2(L12)

2(S13),2(L13)

2(S14),2(L14)

4(S15),L15a,b,BKT(UPPER)

CN16,3(S16)

2(S17),L17,BKT(MIC-M)

CN18,2(S18),L18

CN19a,b,c,2(S19)

2(S20),SHIELD M ASSY,

3(S20),2(L20)

NOTE2a,b,c,d

NOTE3a,b

NOTE5

NOTE6

NOTE7

NOTE11a,b,c

NOTE14

NOTE15

NOTE18

NOTE19

NOTE20

NOTE2a:

During the procedure, leave the GRIP BELT removed from
the hook.

NOTE2b:

When removing the HDD COVER ASSY, leave the JACK
COVER (DC) released.

NOTE2c:

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

NOTE2d:

When removing the HDD COVER ASSY, be careful in han­dling as the HDD may come off.

NOTE3a:

During the procedure, be careful in handling the HDD. Make
sure not to give any shock to the HDD.

NOTE3b:

When attaching the HDD, check the positions of the marks,
and be careful with the GEL lift.

NOTE5:

The screw (No.12) is located under the JACK COVER

-

-

-

-

-

-

-

-

-

NOTE11a:

Remove the screw (No.28), which tightens up the FPC, be­fore connecting/ disconnecting the FPC to/ from the connec­tor.

NOTE11b:

When attaching the two switches (POWER, MODE), be
careful with the attachment locations. Attach the levers and
switches fixed to one direction as they can be fixed (except
the MODE switch lever). After the attachment, check the op­eration by moving the switch levers.

NOTE11c:

When attaching the SPEAKER WIRE, be careful in the wir­ing and not to catch the WIRE in between.

NOTE14:

Refer to 3.2.3 ASSEMBLY/DISASSEMBLY OF [14] MONI­TOR ASSEMBLY for the disassembly of the MONITOR AS­SY.

NOTE15:

When attaching the SPEAKER, be careful with the attach­ment location. Attach the OPE BOARD ASSY first, and then
follow the figure for the SPKEAKER wiring.

NOTE18:

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

NOTE19:

When attaching the MAIN BOARD ASSY, make sure to in­sert the corner of the MAIN BOARD ASSY into the slit of the
FRAME ASSY.

NOTE20:

Refer to 3.2.4 ASSEMBLY/DISASSEMBLY OF [20] OP
BLOCK ASSEMBLY/CCD BOARD ASSEMBLY.

z Destination of connectors

CN.
No.

CN3 HDD - MAIN CN102 40
CN5 ZOOM UNIT - MAIN CN104 6
CN7a REAR CN6001 MAIN CN103 53
CN7b TRIG SW - REAR CN6002 6
CN10 OPE CN401 MAIN CN101 50
CN11a OPE CN402 MONITOR CN7601/7602 24,12/12
CN11b OPE CN403 SPEAKER - 2
CN16 MIC - MAIN CN107 4
CN18 STROBE UNIT - MAIN CN112 14
CN19a CDS CN803 MAIN CN113 4
CN19b CDS CN802 MAIN CN105 53
CN19c OP BLOCK - MAIN CN106 24

(REAR).

NOTE6:

Do not disassemble the ZOOM UNIT if not needed as the
SHIELD (ZOOM) is attached to the terminals.

NOTE7:

When removing the REAR UNIT, be careful in handling as
the JACK COVER (REAR) comes off together.

CONNECTOR

PIN
No.

(No.YF146)1-7

1

(S1)

2

(S1)

3

(S1)

[1]

NOTE3b

MARK

CN3

a

<NOTE2c>

L2d

L2c

L2b

Fig.CA1

L2a

4

(S2)

L1

NOTE2c

[2]

10

(S4b)

Fig.FA2

7

(S4a)

11

(S4b)

NOTE3a

[3]

a

8

(S4a)

[4]

NOTE2a

GRIP BELT

5

(S2)

NOTE2d

1-8 (No.YF146)

Fig.FA1

9

(S4b)

NOTE2b

JACK COVER(DC)

HOOK

6

(S4a)

Fig.FA3

JACK COVER
(REAR)

L9

12

(S5)

NOTE5

<NOTE6>

REAR UNIT

[6]

NOTE6

CN5

L7b

L7a

L5b

L6

13

14

(S6)

(S6)

0.078N࡮m(0.8kgf࡮cm)

Fig.FA4

[7]

SHIELD
(ZOOM)

L5a

[5]

[9]

SHIELD(FRAME)

L10

19

(S8)

20

(S8)

Fig.FA6

21

(S9)

L8

22

(S9)

[8]

0.078N࡮m(0.8kgf࡮cm)

CN7b

NOTE7

JACK COVER
(REAR)

16

(S7)

17

(S7)

18

(S7)

CN7a

Fig.FA5

23

(S10)

26

(S10)

CN10

15

(S7)

25

(S10)

[10]

24

(S10)

24

(S10)

Fig.FA7

(No.YF146)1-9

INTERRUPTER

27

(S11a)

0.078N࡮m(0.8kgf࡮cm)

29

(S11b)

30

(S11b)

NOTE11b

NOTE11c

SPEAKER WIRE

28

(S11b)

CN11b

Fig.FA8

31

(S11b)

[11]

NOTE14

[14]

FPC(MONITOR)

NOTE11a

L14

36

(S14)

37

(S14)

0.245N࡮m(2.5kgf࡮cm)

Fig.UA1

[12]

L12

L13

[13]

34

(S13)

35

(S13)

33

(S12)

32

(S12)

BKT(UPPER)

39

(S15)

<NOTE15>

[15]

L15a

38

(S15)

L15b

41

(S15)

40

(S15)

1-10 (No.YF146)

Fig.FA9

Fig.UA2

42

(S16)

[16]

CN16

43

(S16)

44

(S16)

49

(S19)

50

(S19)

[19]

NOTE19

CN19a

BKT(MIC-M)

45

(S17)

[18]

46

(S17)

Fig.UA3

L17

[17]

OP BLOCK FPC

CN19b

51

(S20)

CDS FPC

Fig.FA10

52

(S20)

SHIELD M ASSY

FRAME ASSY

CDS WIRE

CN19c

47

(S18)

NOTE18

Fig.UA4

CN18

48

(S18)

L18

[20]

NOTE20

Fig.FA11

(S20)

L20

53

55

(S20)

54

(S20)

(No.YF146)1-11

3.2.3 ASSEMBLY/DISASSEMBLY OF [14] MONITOR ASSEMBLY

zCAUTIONS

(1) Remove the MONITOR ASSEMBLY from the UPPER

ASSEMBLY first, as they are removed together in main
parts disassembly, and then proceed to the disassembly
procedure.

(2) During the procedure, be careful in handling the LCD

MODULE and other parts. Pay special attention not to
damage or soil the monitor screen.If fingerprints are left
on the screen, wipe them with clean chamois leather or
a cleaning cloth.

zRemoving MONITOR ASSEMBLY

(1) Turn the HINGE UNIT ASSEMBLY 90°, and remove the

three screws (1-3). Remove the MONITOR COVER AS­SEMBLY by removing the six hooks (L14a-f).

(2) Pull out the U/D SWITCH BOARD from the MONITOR

CASE ASSEMBLY.

NOTE14a:

During the procedure, be careful in handling the FPC.

(3) Release the lock of the connector (CN14a,b), and re-

move the HINGE UNIT by lifting it up.

(4) Release the lock of the connector (CN14c,d), and pull

out the FPC.

(5) Remove the two screws (4,5), and Remove the MONI-

BL BOARD ASSEMBLY by removing the hook (L14h).
(6) Remove the BACK LIGHT.
(7) Remove the LCD MODULE.
(8) Remove the LCD BKT.

zRemoving HINGE UNIT ASSEMBLY

(1) Remove the two screws (6,7), and then remove the

HINGE COVER (U,L).

NOTE14b:

During the procedure, be careful in handling the MAG­NET and be careful with its attachment direction. Make
sure to attach the MAGNET with its mark facing inward.

NOTE14c:

During the procedure, be careful in handling the FPC.

NOTE14d:

The FPC, with its connection to the MONITOR BOARD
ASSEMBLY facing inward, is rolled around the axis
(shaft) of the HINGE ASSEMBLY rotation 2.5 rounds
(2.5times).

<NOTE14a>

MONI BOARD

ASSY

BACK LIGHT

BL FPC

LCD MODULE

LCD FPC

LCD BKT

U/D SWITCH

FPC

L14h

(S14c)

4

5

(S14c)

MONI.COVER

ASSY

1

(S14a)

HINGE COVER(U)

NOTE14b

MAGNET

NOTE14d

HINGE UNIT

HINGE COVER(L)

6

(S14d)

L14a

2

(S14a)

7

(S14d)

L14c

L14b

L14g

L14d

L14e

L14f

<NOTE14b>

Marking in this side.

HINGE
COVER(U)

b

a

FPC

NOTE14c,d

3

(S14b)

MAGNET

<NOTE14c,d>

MONI.CASE

1-12 (No.YF146)

ASSY

NOTE14a

U/D SWITCH

CN14c

Fig.3-2-3

CN14a

CN14b

CN14d

b

a

0.245N m(2.5kgf cm)

3.2.4 ASSEMBLY/DISASSEMBLY OF [20] OP BLOCK ASSEMBLY/CCD BOARD ASSEMBLY

zPrecautions

(1) Take care in handling the CCD IMAGE SENSOR, OPTICAL

LPF and lens components when performing maintenance
etc., especially with regard to surface contamination, at­tached dust or scratching. If fingerprints are present on
the surface they should be wiped away using either a sil­icon paper, clean chamois or the cleaning cloth.

(2) The CCD IMAGE SENSOR may have been shipped with

a protective sheet attached to the transmitting glass.
When replacing the CCD IMAGE SENSOR, do not peel
off this sheet from the new part until immediately before
it is mounted in the OP BLOCK ASSEMBLY.

(3) As the attachment direction of the OPTICAL LPF is im-

portant, be careful when removing it. Make sure to reat­tach the OPTICAL LPF in its original direction.

zDisassembly of OP BLOCK ASSEMBLY / CCD BOARD AS-

SEMBLY

(1) Remove the two screws (1, 2), and then remove the BKT

(OP) ASSY.

(2) Be careful in handling the SPACER and the CONNEC-

TOR that connects the CDS BOARD ASSY and the CCD
BOARD ASSY. Remove the CDS BOARD ASSY by pull­ing it parallel to the CCD BOARD ASSY.

(3) Remove the two screws (3, 4), and then remove the CCD

BOARD ASSY, SHIELD (CCD), HEAT SHEET (CCD),
and the CCD BASE ASSY.

NOTE20a:

Be careful in handling as there are only the OPTICAL
LPF and the SHEET stored inside the OP BLOCK

ASSY when the CCD BASE ASSY is removed.
(4) Remove the SHEET and the OPTICAL LPF.
(5) Unsolder the 24 solder points (SD20a), remove the two

screws (5, 6), and then remove the CCD BASE ASSY.

zAssembly of OP BLOCK ASSEMBLY / CCD BOARD AS-

zReplacement of service repair parts

NOTE20b:

Replace the CCD image sensor as a whole unit of CCD
BASE ASSY instead of replacing it as a single part.

(6) Detach the HEAT SHEET (CCD), and remove the

SHIELD (CCD) from the CCD BOARD ASSY.

SEMBLY

(1) Set the SHIELD (CCD) first, then the HEAT SHEET

(CCD), and then the CCD BASE ASSY to the CCD
BOARD ASSY, and tighten them with the screws (5, 6).

(2) Solder the 24 solder points (SD20a) on the CCD BOARD

ASSY.

(3) Set the OPTICAL LPF first, and then the SHEET to the

OP BLOCK ASSEMBLY.

NOTE20c:

When attaching the OPTICAL LPF, be careful with the
attachment direction to avoid any uplift or unevenness
for the sheet attachment.

(4) Attach the CCD BOARD ASSY (CCD BASE ASSY and

others), and then tighten them with the two screws (3, 4).

The service repair parts for the OP BLOCK ASSEMBLY are as
listed below.Take special care not to disconnect any of the FPC
wires or cause any damage due to soldering (excessive heating).

(1) FOCUS MOTOR UNIT
(2) ZOOM MOTOR UNIT
(3) AUTO IRIS UNIT

NOTE20d:

When replacing the FOCUS MOTOR UNIT or the ZOOM
MOTOR UNIT, solder the FPC at a space of about 0.5 mm
above the terminal pin.

NOTE20e:

The AUTO IRIS UNIT includes the FPC ASSEMBLY and
two sensors.

CCD PWB ASSY

SPACER

3

(S20b)

CDS PWB ASSY

HEAT SHEET
(CCD)

5

(S20c)

4

(S20b)

NOTE20a,c

blue

CCD

side

SD20a

6

(S20c)

CONNECTOR

OP

side

SHET

SHIELD(CCD)

CN20

(S20a)

BKT(OP) ASSY

OPTICAL LPF

CCD BASE ASSY

NOTE20a

Fig.3-2-4

2

1

(S20a)

NOTE20e

AUTO IRIS UNIT

12

(S20d)

11

(S20d)

13

(S20d)

SD20b

SENSOR

NOTE20d

FOCUS MOTOR

10

(S20d)

9

(S20d)

UNIT

SD20b

7

(S20d)

ZOOM MOTOR UNIT

OP BLOCK ASSY

8

(S20d)

NOTE20d

: 0.147N m(1.5kgf cm)
: 0.118N m(1.2kgf cm)

(No.YF146)1-13

SECTION 4

ADJUSTMENT

4.1 PREPARATION

4.1.1 Precaution

Camera system and deck system of this model are specially
adjusted by using PC.
However, if parts such as the following are replaced, an
adjustment is required. The adjustment must be performed in a
Service Center equipped with the concerned facilities.

• OP BLOCK ASSEMBLY

• MONITOR ASSEMBLY

• EEP ROM (IC4502 of MAIN board)
In the event of malfunction with electrical circuits, first find a
defective portion with the aid of proper test instruments as shown
in the following electrical adjustment procedure, and then
commence necessary repair/ replacement/adjustment.

• In observing chip TP, use IC clips, etc. to avoid any stress.
Prior to replacement of chip parts (especially IC), remove the
solder completely to prevent peeling of the pattern.

• Use a patch cord if necessary. As for a patch cord, see the
BOARD INTERCONNECTIONS.

• Since connectors are fragile, carefully handle them in
disconnecting and connecting the FPC.

4.1.2 REQUIRED TEST EQUIPMENT

• Personal computer (for Windows)

• Color TV monitor

• Oscilloscope (dual-trace type, observable 100MHz or higher
frequency). The one observable 300 MHz or higher frequency
is recommended.

• Digital voltmeter

• DC power supply or AC adapter

• Frequency counter (with threshold level adjuster)

4.1.3 TOOLS REQUIRED FOR ADJUSTMENT

Torque Driver

YTU94088

Chip IC Replacement Jig

PTS40844-2

INF Adjustment Lens Holder

YTU94087

Gray Scale Chart

YTU94133A

Communication Cable

YTU93107B

Service Support System

Bit

YTU94088-003

Cleaning Cloth

KSMM-01

Mini Stand

YTU93108

Color Bar Chart

YTU94133C

YTU94057-95

INF Adjustment Lens

YTU92001B

Light box Assembly

YTU93096A

QAM0099-002

Jig Connector Cable

YTU93106A

Tweezers

P-895

PC Cable

1-14 (No.YF146)

Conversion Connector

YTU94145L-30

• 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 adjustment of the camera system.

• Cleaning cloth

Recommended the Cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens sur­face.

• INF adjustment lens

To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.

• INF adjustment lens holder

To be used together with the Camera stand for operating the
Videocamera in the stripped-down condition such as the sta­tus without the exterior parts or for using commodities that are
not yet conformable to the interchangeable ring. For the usage
of the INF lens holder, refer to the Service Bulletin No. YA-SB-

10035.

• Mini stand

To be used together with the INF adjustment lens holder. For
the usage of the Mini stand, refer to the Service Bulletin No.
YA-SB-10035.

• Light box assembly

To be used for adjustment of the camera system. For the
usage of the Light box assembly, refer to the Service Bulletin
No. YA-SB-10035.

• Gray scale chart

To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.

• Color bar chart

To be used for adjustment of the camera system. For the
usage of the INF adjustment lens, refer to the Service Bulletin
No. YA-SB-10035.

• PC cable

To be used to connect the Videocamera and a personal computer
with each other when a personal computer issued for adjustment.

• Communication cable

Connect the Communication cable between the PC cable and
Jig connector cable when performing a PC adjustment.

• Service support system

To be used for adjustment with a personal computer. Software
can be downloaded also from JS-net.

• Jig connector cable

Connected to JIG CONNECTOR of the main board and used
for electrical adjustment, etc.

• Conversion connector

Conversion connector is used to convert the connector part of
the JIG connector cable.

4.2 JIG CONNECTOR CABLE CONNECTION

 Connection procedure

NOTE

Be sure to turn the power “OFF”, when connecting the JIG
CONNECTOR CABLE.
If the JIG CONNECTOR CABLE is connected with the pow­er “ON”, communication error may occur.

3

2

CONVERSION
CONNECTOR

JIG CONNECTOR
CABLE

COMMUNICATION CABLE

1

JIG
CONNECTOR

JIG CONNECTOR

TO NU_RX

TO NU_TX

TO GND

PC CABLE

FOR
COMMUNICATION CABLE

RS232C
COM PORT

COMMUNICATION
CABLE

RED

WHITE

BLACK

COVER(JIG)

SERVICE

SUPPORT

SYSTEM

MENU

PERSONAL COMPUTER

Fig.4-2-1

CAUTION

The JIG CONNECTOR CABLE cannot be connected with
the COVER (JIG) removed because of its structure. It is nec­essary to cut a part of the connector board as shown below.
Pay special attention during the procedure.

JIG CONNECTOR CABLE [YTU93106A]

: The part to be cut

(No.YF146)1-15

 Jig connector diagrams

JIG CONNECTOR CABLE (YTU93106A)

MAIN CN110

ARMTDO

ARMTCK

ARMTMS

ARMTDI

XARMTRST

XJRESET

REG_3.1V

NU_RX

NU_TX

AL_3.1V

SJIG_TX

SJIG_RX

MODO

SJIG_RST

NC

GND

MON_B

HRP

MON_R

GND

MON_G

NC

VDCVF

NC

NC

ZGH_OUT

ZGH_THRU

SBD5

SBT5

WORD

JIG CONN. BOARD

(PIN NO.)

1

16

2

17

3

18

4

19

5

20

6

21

7

22

8

23

9

24

10

25

11

26

12

27

13

28

14

29

15

30

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

ARMTDO

ARMTMS

XARMTRST

REG_3.1V

NU_TX

SJIG_TX

MODO

NC

MON_B

MON_R

MON_G

VDCVF

NC

ZGH_THRU

SBT5

ARMTCK

ARMTDI

XJRESET

NU_RX

AL_3.1V

SJIG_RX

SJIG_RST

GND

HRP

GND

NC

NC

ZGH_OUT

SBD5

WORD

Fig.4-2-2

1-16 (No.YF146)

5.1 SERVICE NOTE

SECTION 5

TROUBLE SHOOTING

UA1

aaabe

aad c

FA4

FA3 FA5

aeae

-

[1] [2] [3] [4] [5] [6] [7] [8] [9]

CABINET PARTS AND ELECTRICAL PARTS(1)

CA1 FA1 FA2

1 2 3 4 5 - 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

[10] [11] [12] [13] [14] [15] [16] [17]

CABINET PARTS AND ELECTRICAL PARTS(2)

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

FA6 UA2 UA3 UA4 UA5 FA7

[18] [19] [20]

CABINET PARTS AND ELECTRICAL PARTS(3)

47 48 49 50 51 52 53 54 55

a

FA8 FA9 FA10

[20]

[20]OP BLOCK ASSY/CCD BOARD ASSY

3-2-4

1 2 3 4 5 6 7 8 9 10 11 12 13

ab

[14]

[14]MONITOR ASSY

3-2-3

1 2 3 4 5 6 7

Symbol No.

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

Symbol No.

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

Symbol No.

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

Symbol No.

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

NOTE:

1 ) and (This mark shows where to attach the screws) : Do not reuse the screws because the screw lock bond was applied to prevent the screws from loosening.

Prepare the specified screws and use them in place of the removed screws.

2 )Tightening torque for the screws

There are setting limits of the torque value for the torque driver. If the value exceeds the setting value, take it as a rough measurement (reference value),

and tighten the screw manually.

The specified torque value is a recommended value of the initial assembly. Therefore, set the value below the specified torque value in the assembling procedure.

Be careful not to break either the screws or the screw holes.

a : 0.098N m (1.0kgf cm) b : 0.248N m (2.5kgf cm) c : 0.118N m (1.2kgf cm) d : 0.147N m (1.5kgf cm) e : 0.078N m (0.8kgf cm)

(No.YF146)1-17

Victor Company of Japan, Limited
Camcorder Category 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No.YF146)

Printed in Japan

VPT