JVC GR-DVX44, GR-DVX77EG, GR-DVX77EK, GR-DVX88EG Service Manual
SERVICE MANUAL
DIGITAL VIDEO CAMERA
VICTOR COMPANY OF JAPAN, LIMITED
VIDEO DIVISION
S40894
GR-DVDVX44EG/EK,DVX77EG/EK,DVX88EG
GR-DVX44EG/EK,DVX77EG/EK,DVX88EG
SPECIFICATIONS
Camcorder
For General
No. 86617
Power supply : DC 11.0 V } (Using AC Adapter)
Power consumption
LCD monitor off, viewfinder on :
LCD monitor on, viewfinder off :
Dimensions (W x H x D) : 51 mm x 120 mm x 97 mm
Weight : Approx. 500 g (GR-DVX88/DVX77)
Operating temperature : 0°C to 40°C
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C
Pickup : 1/4" CCD
Lens : F 1.8, f = 3.6 mm to 36 mm, 10:1 power zoom lens
Filter diameter : ø27 mm
LCD monitor : 2.5" diagonally measured, LCD panel/TFT active matrix system
Viewfinder : Electronic viewfinder with 0.44" colour LCD
Speaker : Monaural
For Digital Video Camera
Format : DV format (SD mode)
Signal format : PAL standard
Recording/Playback format : Video: Digital component recording
Cassette : Mini DV cassette
Tape speed : SP: 18.8 mm/s
Maximum recording time : SP: 80 min.
(using 80 min. cassette) LP: 120 min.
For Digital Still Camera (GR-DVX88/DVX77 only)
Storage media : SD Memory Card/MultiMediaCard
Compression system : Still image : JPEG (compatible)
Moving image : MPEG4 (compatible)
File size : 2 modes (XGA: 1024 x 768 pixels/VGA: 640 x 480 pixels)
Picture quality : 2 modes (FINE/STANDARD)
Approximate number of storable images
(with the provided memory card [8 MB], with Sound Effects pre-stored)
FINE : 40 (VGA), 20 (XGA)
STANDARD : 130 (VGA), 60 (XGA)
(with an optional memory card [16 MB])
FINE : 100 (VGA), 40 (XGA)
STANDARD : 290 (VGA), 140 (XGA)
(with an optional memory card [32 MB])
FINE : 210 (VGA), 90 (XGA)
STANDARD : 610 (VGA), 290 (XGA)
(with an optional memory card [64 MB])
FINE : 430 (VGA), 190 (XGA)
STANDARD : 1230 (VGA), 600 (XGA)
DC 7.2 V } (Using battery pack)
Approx. 4.4 W (GR-DVX88/DVX77), Approx. 4.0 W (GR-DVX44)
Approx. 5.2 W (GR-DVX88/DVX77), Approx. 4.8 W (GR-DVX44)
(with the LCD monitor closed and the viewfinder pushed back in)
Approx. 470 g (GR-DVX44)
: Audio: PCM digital recording, 32 kHz 4-channel (12-bit),
48 kHz 2-channel (16-bit)
LP: 12.5 mm/s
For Connectors
AV
Video output : 1 V (p-p), 75 Ω, analogue
Audio output : 300 mV (rms), 1 kΩ, analogue, stereo
Headphone output
(GR-DVX88/DVX77 only) : Stereo
DV
Input/output
(GR-DVX88 only) : 4-pin, IEEE 1394 compliant
Output
(GR-DVX77/DVX44 only) : 4-pin, IEEE 1394 compliant
AC adapter AP-V10EG
Power requirement : AC 110 V to 240 V`, 50 Hz/60 Hz
Output : DC 11 V } , 1 A
Dimensions (W x H x D) : 59 mm x 31 mm x 84 mm
Weight : Approx. 140 g (not including Power Cord)
Jack Box
For General
Dimensions (W x H x D) : 52 mm x 22 mm x 73 mm
Weight : Approx. 35 g
For Connectors
USB (GR-DVX88/DVX77 only) : Type B
EDIT (GR-DVX88/DVX77 only) : ø3.5 mm, 2-pole
S-Video
Output : Y : 1 V (p-p), 75 Ω, analogue
JLIP (GR-DVX44 only) : ø3.5 mm, 4-pole
PC (DIGITAL PHOTO)
(GR-DVX44 only) : ø2.5 mm, 3-pole
Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and specifications subject
to change without notice.
C : 0.29 V (p-p), 75 Ω, analogue
Printed in Japan
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
No. 86617
April 2001
TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
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
1.2 JIGS AND TOOLS REQUIRED FOR DISASSEMBLY,
ASSEMBLY AND ADJUSTMENT ......................................... 1-2
1.2.1 Tools required for adjustments ........................................ 1-2
1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS AND
BOARD ASSEMBLY ............................................................. 1-2
1.3.1 Disassembly flow chart .................................................... 1-2
1.3.2 Disassembly method ....................................................... 1-3
1.4 DISASSEMBLY OF 5 MONITOR ASSEMBLY ..................... 1-8
1.4.1 5 Monitor assembly/Hinge assembly .............................. 1-8
1.4.2 Hinge assembly ............................................................... 1-8
1.5 DISASSEMBLY OF 7 OP BLOCK ASSEMBLY/CCD BOARD
ASSEMBLY........................................................................... 1-9
1.5.1 Precautions ..................................................................... 1-9
1.5.2
How to remove OP block assembly and CCD board assembly
How to install OP block assembly and CCD board assembly
1.5.3
1.5.4 Replacement of service parts .......................................... 1-9
1.6 DISASSEMBLY OF 9 E. VF ASSEMBLY ........................... 1-10
1.6.1 9 E. VF assembly.......................................................... 1-10
1.7 EMERGENCY DISPLAY .................................................... 1-11
1.8 SERVICE NOTE ................................................................. 1-12
2. MECHANISM ADJUSTMENT
2.1
PRELIMINARY REMARKS ON ADJUSTMENT AND REPAIR
2.1.1 Precautions ..................................................................... 2-1
2.1.2 Notes on procedure for disassemby/assembly ................ 2-1
2.2 JIGS AND TOOLS REQUIRED FOR DISASSEMBLY,
ASSEMBLY AND ADJUSTMENT ......................................... 2-2
2.2.1 Tools required for adjustments ........................................ 2-2
2.3 DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY 2-3
2.3.1 General statement ........................................................... 2-3
2.3.2 Explanation of mechanism mode .................................... 2-3
2.3.3 Mechanism timing chart .................................................. 2-4
2.4 DISASSEMBLY/ASSEMBLY OF MECHANISM ASSEMBLY 2-5
2.4.1 Follow chart ..................................................................... 2-5
2.4.2 Disassembly/assembly .................................................... 2-8
2.4.3 List of procedures for disassembly ................................ 2-14
2.5
CHECKUP AND ADJUSTMENT OF MECHANISM PHASE
2.6 MECHANISM ADJUSTMENTS .......................................... 2-16
2.6.1
Assembling slide deck assembly and main deck assembly.
2.6.2 Locating tension pole .................................................... 2-17
2.7 SERVICE NOTE .................................................................. 2-18
2.8 JIG CONNECTOR CABLE CONNECTION ........................ 2-20
3. ELECTRICAL ADJUSTMENT
3.1 Precaution ............................................................................ 3-1
3.2 SETUP ................................................................................. 3-2
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM .......................................... 4-1
CIRCUIT BOARD NOTES ........................................................... 4-2
4.1 BOARD INTERCONNECTIONS [GR-DVX44EG/EK]........... 4-3
4.2 BOARD INTERCONNECTIONS
[GR-DVX77EG/EK, GR-DVX88EG] ...................................... 4-5
4.3 SYSCON SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ....... 4-7
4.4 SYSCON SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ...................................... 4-9
4.5 PC IF SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ........... 4-11
1-9
1-9
2-1
2-15
2-16
4.6 PC IF SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] .................................... 4-13
4.7 DVMAIN SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ...... 4-15
4.8 DVMAIN SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] .................................... 4-17
4.9 SERVO SCHEMATIC DIAGRAM ........................................ 4-19
4.10 PRE/REC SCHEMATIC DIAGRAM ................................. 4-21
4.11 V OUT SCHEMATIC DIAGRAM [GR-DVX44EG/EK] ....... 4-23
4.12 V OUT SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-25
4.13 CAM DSP SCHEMATIC DIAGRAM [GR-DVX44EG/EK] . 4-27
4.14 CAM DSP SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-29
4.15 ANA IN SCHEMATIC DIAGRAM
[THIS SCHEMATIC DIAGRAM IS NOT USED] ............... 4-31
4.16 TG/V.DRV SCHEMATIC DIAGRAM ................................. 4-33
4.17 REG SCHEMATIC DIAGRAM .......................................... 4-35
4.18 STO SENS SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-37
4.19 VF MAIN SCHEMATIC DIAGRAM ................................... 4-39
4.20 DSC SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-41
4.21
MP3 SCHEMATIC DIAGRAM [GR-DVX77EG/EK, GR-DVX88EG] .
4.22 USB DRV SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-45
4.23 W/B SCHEMATIC DIAGRAM ........................................... 4-47
4.24 CCD SCHEMATIC DIAGRAM .......................................... 4-48
4.25 MDA SCHEMATIC DIAGRAM.......................................... 4-49
4.26 IR TALLY SCHEMATIC DIAGRAM ................................... 4-51
4.27 OP DRIVER SCHEMATIC DIAGRAM .............................. 4-53
4.28 MONITOR SCHEMATIC DIAGRAM................................. 4-55
4.29 JUNCTION SCHEMATIC DIAGRAM ............................... 4-57
4.30 STROBE SCHEMATIC DIAGRAM
[GR-DVX77EG/EK, GR-DVX88EG] ................................. 4-59
4.31 AUDIO AD/DA SCHEMATIC DIAGRAM .......................... 4-61
4.32 MAIN AUDIO SCHEMATIC DIAGRAM ............................ 4-63
4.33 A/HP SEL. SCHEMATIC DIAGRAM ................................ 4-65
4.34 JACK SCHEMATIC DIAGRAM ........................................ 4-67
4.35 WB SENS, CAMERA OPE. UNIT, DECK OPE. ASSY
AND SUB OPE. UNIT SCHEMATIC DIAGRAMS ............ 4-69
4.36 MAIN CIRCUIT BOARD [GR-DVX44EG/EK] ................... 4-71
4.37
MAIN CIRCUIT BOARD [GR-DVX77EG/EK, GR-DVX88EG] .
4.38 MDA CIRCUIT BOARD.................................................... 4-83
4.39 CCD AND JUNCTION CIRCUIT BOARDS...................... 4-85
4.40 MONITOR CIRCUIT BOARD........................................... 4-87
4.41 AUDIO CIRCUIT BOARD ................................................ 4-89
4.42 STROBE, W/B AND JACK CIRCUIT BOARDS ............... 4-91
4.43 VOLTAGE CHARTS ......................................................... 4-93
4.44 POWER SYSTEM BLOCK DIAGRAM............................. 4-97
4.45 VIDEO SYSTEM BLOCK DIAGRAM ............................... 4-99
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ............... 5-1
5.2 FINAL ASSEMBLY <M2> .................................................... 5-2
5.3 MECHANISM ASSEMBLY <M3> ........................................ 5-6
5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4> ................ 5-8
5.5 MONITOR ASSEMBLY <M5> ............................................. 5-9
5.6 ELECTRICAL PARTS LIST ................................................ 5-10
MAIN BOARD ASSEMBLY <01> ............................................. 5-10
MDA BOARD ASSEMBLY <02> .............................................. 5-19
CCD BOARD ASSEMBLY <03> .............................................. 5-20
MONITOR BOARD ASSEMBLY <04> ..................................... 5-20
JUNCTION BOARD ASSEMBLY <06> ................................... 5-21
STROBE BOARD ASSEMBLY(C,D,E) ..................................... 5-21
AUDIO BOARD ASSEMBLY <08> .......................................... 5-22
JACK BOARD ASSEMBLY <09>............................................. 5-24
W/B BOARD ASSEMBLY <11> ............................................... 5-24
4-43
4-77
The following table lists the differing points between Models GR-DVX44EG/EK, GR-DVX77EG/EK and GR-DVX88EG in this series.
GR-DVX44EG GR-DVX44EK GR-DVX77EG GR-DVX77EK GR-DVX88EG
VIDEO FLASH
DSC FLASH MEMORY NOT USED USED
DIGITAL SOUND RECODING
DV INPUT NOT USED USED
HEAD PHONE OUTPUT NOT USED USED
MEMORY CARD NOT USED USED (8 MB)
JACK BOX CU-V505 CU-V506
USB CABLE
USB TERMINAL
PC CONNECTION CABLE
JLIP/EDIT TERMINAL
NOT USED USED
USED NOT USED
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.
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 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.
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 order 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).
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.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.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.
Fig.4
(3) Align the lengths of the wires to be connected. Insert the
wires fully into the connector.
Metal sleeve
Connector
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.
1
.2
5
2
.0
5
.5
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Fig.7
Crimping tool
Crimped at approx. center
of metal sleeve
Conductors extended
I
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 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 table 1 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 table 1
below.
Fig. 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 figure 9 and following
table 2.
Externally
exposed
accessible part
Fig. 9
Z
V
ab
A
c
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.
Fig. 10
Table 1 Specifications for each region
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.
II
S40888-01
SECTION 1
DISASSEMBLY
1.1 BEFORE ASSEMBLY AND DISASSEMBLY
1.1.1 Precautions
1. Be sure to remove the power supply unit prior to mounting and soldering of parts.
2. When removing a component part that needs to disconnect the connector and to remove the screw for removing itself, first disconnect the connecting wire from the
connector and then remove the screw beforehand.
3. When connecting and disconnecting the connectors, be
careful not to damage the wire.
4. Carefully remove and handle the part to which some
spacer or shield is attached for reinforcement or insulation.
5. When replacing chip parts (especially IC parts), desolder
completely first (to prevent peeling of the pattern).
6. Tighten screws properly during the procedures.
Unless specified otherwise, tighten screws at a torque
of 0.078N
•
m(0.8kgf•cm).
1.1.2 Assembly and disassembly
STEP
No.
1
2
3
(1) (2) (3) (4) (5)
PART
DECK OPE ASSY Fig.1-3-1 2(S1), (L1)—
MIC UNIT 2(S2),2(L2) NOTE2
FRONT COVER Fig.1-3-2 COVER(DV),(S3a),3(S3b) NOTE3a
ASSY 2(S3c),(S3d),STUD(HOOK) NOTE3b
Fig.No.
POINT NOTE
聽CN1a
聽CN2a
(L3)
聽CN3a
(1) Indicate the disassembly steps. When assembling, per-
form in the reverse order of these steps. This number
corresponds to the number in the disassembly diagram.
(2) Indicates the name of disassembly/assembly parts.
(3) Indicates the number in the disassembly diagram.
(4) Indicates parts and points such as screws, washers,
springs which must be removed during disassembly/
assembly.
Symbol Name, Point
S Screw
L Lock, Pawl, Hook
SD Soldering
夡(Others) Connector, Cover, Bracket, etc.
(Example)
• 2 (S1) : Remove the two screws (S1) for removing the
part 1.
• CN 1a: Disconnect the connector 1a.
• SD1 : Unsolder at the point SD1.
(5) Precautions on disassembly/assembly.
1.1.4 Disconnection of Connectors (Wires)
Connector
Pull both ends of the connector in the arrow direction, remove the lock and disconnect the flat wire.
Flat wire
Connector
Fig. 1-1-1 Connector 1
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.
Flat wire
Connector
Fig. 1-1-2 Connector 2
B-B connector
Pull the board by both the sides in the direction of the arrow for disconnecting the B-B connector.
Connector
Connector
Fig. 1-1-3 Connector 3
1.1.3 Destination of connectors
Note:
Three kinds of double-arrows in connection tables respectively show kinds of connector/wires.
↔ : Wire
⇔ : Flat wire (FPC, FFC)
: Board to Board connector
[Example]
CONN.
No.
a DECK OPE ASSY - ⇔ AUDIO CN803 6
1
a AUDIO CN804 ⇔ MIC UNIT - 4
2
CONNECTOR
Connector
Pin No.
Fig. 1-1-4 Connector 4
1-1
1.2 JIGS AND TOOLS REQUIRED FOR DISASSEMBLY, ASSEMBLY AND ADJUSTMENT
1.2.1 Tools required for adjustments
1
Torque Driver
YTU94088
2
Bit
YTU94088-003
1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS AND BOARD ASSEMBLY
1.3.1 Disassembly flow chart
This flowchart indicates the disassembly step for the cabinet parts and board assembly in order to gain access to
item(s) to be serviced. When reassembling, perform the
step(s) in reverse order.
3
5
Tweezers
P-895
Cleaning Cloth
KSMM-01
Chip IC Replacement Jig
4
PTS40844-2
Table 1-2-1
1. Torque driver
Be sure to use to fastening the mechanism and exterior
parts because those parts must strictly be controlled for
tightening torque.
2. Bit
This bit is slightly longer than those set in conventional
torque drivers.
1
2
3
4
5
6
7
8
9
DECK OPE ASSY
MIC UNIT
FRONT COVER ASSY
UPPER CASE ASSY
(Inc.MONITOR ASSY)
MONITOR ASSY
LOWER CASE ASSY
(Inc.OP BLOCK ASSY
/STROBE ASSY/E. VF UNIT
/AUDIO BOARD ASSY)
OP BLOCK ASSY
STROBE ASSY
E.VF ASSY
3. Tweezers
To be used for removing and installing parts and wires.
4. Chip IC replacement jig
To be used for adjustment of the camera system.
5. Cleaning cloth
Recommended cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens
surface.
0
!
@
#
AUDIO BOARD ASSY
MDA BOARD ASSY
MAIN BOARD ASSY
MECHANISM ASSY
Table 1-3-1
1-2
1.3.2 Disassembly method
STEP
No.
1
2
3
4
5
6
7
8
9
0
!
@
#
PART
DECK OPE ASSY Fig.1-3-1 2(S1), (L1) —
MIC UNIT 2(S2), 2(L2) NOTE2
FRONT COVER Fig.1-3-2 COVER(DV), (S3a), 3(S3b) NOTE3a
ASSY 2(S3c), (S3d), STUD(HOOK) NOTE3b
UPPER CASE ASSY
(Inc.MONITOR (S4b), (S4c), (S4d), 2(S4e) NOTE4b
ASSY) 聽CN 4a, 4b, 4c, 4d NOTE4c
MONITOR ASSY Fig.1-3-4 (S5a),(S5b) NOTE5
LOWER CASE ASSY
Inc.OP BLOCK ASSY
(
/STROBE ASSY NOTE6c
/E. VF ASSY
/AUDIO BOARD
ASSY)
OP BLOCK ASSY Fig.1-3-6 2(S7),2(L7) NOTE7a
STROBE ASSY Fig.1-3-7 (S8),
E.VF ASSY Fig.1-3-8 聽CN 9a, (9b) NOTE9a
AUDIO BOARD ASSY
MDA BOARD ASSY
MAIN BOARD ASSY
MECHANISM ASSY
Fig.No.
聽CN 1a
聽CN 2a
(L3)
聽CN 3a
Fig.1-3-3 (S4a), 2(L4),
Fig.1-3-5 聽CN 6a, 6b,6c, 6d, 6e NOTE6a
(S6a), 4(S6b) NOTE6b
(S9), 2(L9) NOTE9b
Fig.1-3-9 SPACER,(S0a),3(S0b),(L0a) NOTE0a
(L0b),BRACKET(TOP) NOTE0b
Fig.1-3-10 聽CN !a, !b, !c, (S!) NOTE!a
聽CN !d, !e NOTE!b
(S@a), (L@), SHIELD PLATE NOTE@
聽CN @a, @b, (S@b)
(S#a), 2(S#b), 2(L#) —
BRACKET(MECHA)
POINT NOTE
LOCK(MONITOR)
GR-DVX77EG/EK,DVX88EG
Table 1-3-2
Remove the parts marked in .
Note:
CONN.
No.
a DECK OPE ASSY - ⇔ AUDIO CN803 6
1
a AUDIO CN804 ←→ MIC UNIT - 4
2
a JACK CN901 ⇔ MAIN CN103 18
3
a MDA CN207 ⇔ SUB OPE ASSY - 7
4
b MAIN CN104 ←→ W/B - 3
4
c MAIN CN106 ⇔ MONITOR CN761 45/39
4
d MAIN CN112 ⇔ J.BOX/MENU - 16
4
a MAIN CN101 AUDIO CN801 80
6
b MAIN CN107 ⇔ CCD - 20
6
c MAIN CN109 ⇔ STROBE - 12
6
d MDA CN205 ⇔ OP BLOCK ASSY - 24
6
e MAIN CN208 ⇔ JUNCTION CN601 20
6
a AUDIO CN805 ⇔ E. VF ASSY CN1 16
9
b AUDIO CN803 ⇔ FPC - 6
9
a MDA CN202 ⇔ DRUM MOTOR - 11
!
b MDA CN201 ⇔ LOADING MOTOR - 6
!
c MDA CN203 ⇔ CAPSTAN MOTOR - 18
!
d MAIN CN102 MDA CN206 80
!
e MDA CN204 ⇔ SENSOR - 15
!
CONNECTOR
@a MAIN CN110 ⇔ HEAD - 8
@b MAIN CN111 ⇔ ROTARY ENCODER - 6
Table 1-3-3
NOTE4a
NOTE7b
NOTE7c
NOTE8
NOTE9c
NOTE9d
NOTE!c
Pin No.
NOTE 2:
NOTE 3a:
NOTE 3b:
NOTE 4a:
NOTE 4b:
NOTE 4c:
NOTE 5:
NOTE 6a:
NOTE 6b:
NOTE 6c:
NOTE 7a:
NOTE 7b:
NOTE 7c:
NOTE 8:
NOTE 9a:
NOTE 9b:
NOTE 9c:
NOTE 9d:
NOTE 0a:
NOTE 0b:
NOTE !a:
NOTE !b:
NOTE !c, @:
Beware of electrical shock due to the capacitor during work.
(GR-DVX77EG/EK and GR-DVX88EG)
When disassembling the Front Cover Assembly, remove
the screws, pull out the studs and free the grip belt.
When attaching the assembly, make sure that the strobe
block fits properly into the frame.
(GR-DVX77EG/EK and GR-DVX88EG)
Remove the Upper Case Assembly before removing the
Monitor Assembly 5.
Take care not to damage the parts (battery terminals).
Take care not to damage the parts (spring).
Refer to Fig. 1-4-1 for the disassembly method.
Remove the board assemblies (Main/MDA) and Mechanism Assembly together.
When removing, take care not to disconnect the wire
or damage any of the parts.
When attaching, be careful of the board attaching position.
Remove the OP Block Assembly together with the
Strobe Assembly. Beware of electrical shock due to the
capacitor during work.
(GR-DVX77EG/EK and GR-DVX88EG)
When removing, take care not to disconnect the wire
or damage any of the parts.
Refer to Fig. 1-5-1 for the disassembly method.
Beware of electrical shock due to the capacitor during work.
(GR-DVX77EG/EK and GR-DVX88EG)
When removing, be careful with the FPC (for the Deck
Operation Assembly) attached inside the E.VF Assembly.
Remove the FPC by unplugging it from the connector
and then taking the FPC out together with the E. VF or
by peeling it carefully so that the double-sided adhesive
can be reused later.
When removing or attaching, take care not to damage
any parts.
Particularly, when attaching the switch, always pull out
the E.VF Assembly to avoid it from damaging the switch.
When attaching, be careful with the wire treatment.
Refer to Fig. 1-6-1 for the disassembly method.
When attaching or removing, take care not to damage
any parts.
Attach the slide switch at the position of the DSC
switch (VIDEO side).
(GR-DVX77EG/EK and GR-DVX88EG)
When attaching, take care with the wire treatment.
This note does not apply when the E.VF Assembly and
FPC have been removed together as shown in Fig. 1-3-
8.
When unplugging the connector !d, be careful with the
handling of the FPC connected to it.
Connector !e is located inside the circuit board, so it
should be the last item to be removed.
When attaching, pay heed to the FPC treatment.
Mount the FPC so that it is caught between the Mechanism Assembly and the Main Board Assembly.
1-3
2
(L )
2
3
2
(S )
4
2
(S )
CN a
(L )
1
1
(S )
1
1
2
1
1
(S )
4
CN b
4
CN c
4
14
4
(S c)
NOTE
CN
4
(L )
NOTE c
LOCK
(MONITOR)
12
4
(S a)
15
4
(S d)
4
2
a
2
4
CN a
13
4
(S b)
NOTE b
4
4
CN d
5
Fig. 1-3-1
3
NOTE b
17
(S e)
16
4
(S e)
Fig. 1-3-3
: 0.118N·m (1.2kgf·cm)
4
4
NOTE a
: 0.098N·m (1.0kgf·cm)
1-4
3
NOTE a
STUD
(HOOK)
NOTE b
GRIP BELT
5
3
(S a)
3
3
HOOK
11
(S d)
3
(L )
7
3
(S b)
6
3
(S b)
3
8
3
(S b)
COVER
(DV)
3
a
CN
Fig. 1-3-2
7
3
(S b)
11
3
(S d)
8
3
(S b)
9
3
(S c)
10
3
(S c)
18
6
(S b)
23
6
(S b)
23
6
(S b)
24
6
(S b)
21
6
NOTE a,b
6
(S b)
24
6
(S a)
20
6
(S b)
22
6
NOTE c
6
CN a
6
CN c
6
CN b
6
CN e
6
CN d
6
TAPE
5
(S a)
4
: 0.198N·m (2.0kgf·cm)
19
(S b)
Fig. 1-3-4
NOTE
5
5
5
Fig. 1-3-5
1-5
: 0.147N·m (1.5kgf·cm)
(L )
25
7
(S )
7
26
7
(S )
7
NOTE a
8
7
NOTE b
7
7
NOTE c
Fig. 1-3-6
9
NOTE b
SWITCH
9
NOTE b
27
8
(S )
9
(L )
7
Fig. 1-3-7
NOTE
8
8
9
NOTE
9
CN a
a
: 0.098N·m (1.0kgf·cm)
9
(L )
NOTE c
9
NOTE a
CN803(AUDIO)
(S )
9
Fig. 1-3-8
9
NOTE d
9
28
9
<TOP VIEW>
9
NOTE b
FPC
or
9
CN b
1-6
10
(L a)
10
(L b)
BRACKET
(TOP)
29
10
(S a)
NOTE b
10
: 0.098N·m (1.0kgf·cm)
11 12
NOTE e,
NOTE
Fig. 1-3-9
13
10
SWITCH
10
a
BRACKET
(MECHA)
37
13
(S b)
31
10
(S b)
12
CN
b
32
10
(S b)
SPACER
30
10
(S b)
NOTE b
11
CN
11
CN
NOTE c
CN
a
11
11
11
11
(S )
b
e
33
11
CN
(S a)
11
c
13
(L )
36
13
34
12
(S a)
SHIELD
PLATE
CN
38
13
(S b)
12
(L )
11
d
Fig. 1-3-10
NOTE a
11
NOTE a
11
12
CN
35
12
(S b)
12
a
CN
11
d
1-7
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