JVC GZ-MG21USM User manual

SERVICE MANUAL
COPYRIGHT © 2006 Victor Company of Japan, Limited No.YF132
2006/3
HARD DISK CAMCORDER
YF13220063
GZ-MG21US, GZ-MG31US
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
GZ-MG21USM [M6E324],
GZ-MG31USM [M6E326]

1-2 (No.YF132)
SPECIFICATION
Camcorder
AC Adapter
Remote Control
Design and specifications subject to change without notice.
For General Power supply DC 11.0 V (Using AC Adapter)
DC 7.2 V (Using battery pack)
Power consumption Approx. 3.9 (4.1)* W
* When using the LED light
Approx. 6.5 W (Maximum; when charging a battery)
Dimensions (W ×H ×D) 68 mm ×69 mm ×109 mm (2-11/16" x 2-3/4" x 4-5/16")
Weight Approx. 340 g (0.75 lbs) (without battery, lens cap and strap)
Approx. 400 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 1/6" (680,000 pixels) CCD
Lens F 2.0 to 4.5, f = 2.3 mm to 73.6 mm, 32:1 power zoom lens
Filter diameter Ø30.5 mm
LCD monitor 2.5" diagonally measured, LCD panel/TFT active matrix system
Speaker Monaural
Flash Within 1.5 m (4.9 ft) (recommended shooting distance)
For Video/Audio Format SD-VIDEO
Recording/Playback
format
Video MPEG-2
Audio Dolby Digital (2 ch)
Signal format NTSC standard
Recording mode (video) ULTRA FINE: 720 ×480 pixels, 8.5 Mbps (VBR)
FINE: 720 ×480 pixels, 5.5 Mbps (VBR)
NORMAL: 720 ×480 pixels, 4.2 Mbps (VBR)
ECONOMY: 352 ×240 pixels, 1.5 Mbps (VBR)
Recording mode (audio) ULTRA FINE: 48 kHz, 384 kbps
FINE: 48 kHz, 384 kbps
NORMAL: 48 kHz, 256 kbps
ECONOMY: 48 kHz, 128 kbps
For Still image Format JPEG
Image size One mode (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
Video output 1.0 V (p-p), 75 kΩ, analog
Audio output 300 mV (rms), 1 kΩ, analog, stereo
USB Mini USB type B, USB 2.0 compliant
Power requirement AC 110 V to 240 V, 50 Hz/60 Hz
Output DC 11 V, 1 A
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)

(No.YF132)1-3
SECTION 1
PRECAUTIONS
1.1 SAFTY PRECAUTIONS
Prior to shipment from the factory, JVC products are strictly
inspected to conform with the recognized product safety and
electrical codes of the countries in which they are to be
sold.However,in order to maintain such compliance, it is equally
important to implement the following precautions when a set is
being serviced.
1.1.1 Precautions during Servicing
(1) Locations requiring special caution are denoted by labels
and inscriptions on the cabinet, chassis and certain parts of
the product.When performing service, be sure to read and
comply with these and other cautionary notices appearing
in the operation and service manuals.
(2) Parts identified by the symbol and shaded ( ) parts
are critical for safety.
Replace only with specified part numbers.
NOTE :
Parts in this category also include those specified to
comply with X-ray emission standards for products
using cathode ray tubes and those specified for
compliance with various regulations regarding
spurious radiation emission.
(3) Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as
specified.
(4) Use specified internal wiring. Note especially:
• Wires covered with PVC tubing
• Double insulated wires
• High voltage leads
(5) Use specified insulating materials for hazardous live parts.
Note especially:
• Insulation Tape
• PVC tubing
•Spacers
• Insulation sheets for transistors
•Barrier
(6) When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
Fig.1-1-1
(7) Observe that wires do not contact heat producing parts
(heatsinks, oxide metal film resistors, fusible resistors, etc.)
(8) Check that replaced wires do not contact sharp edged or
pointed parts.
(9) When a power cord has been replaced, check that 10-15
kg of force in any direction will not loosen it.
Fig.1-1-2
(10) Also check areas surrounding repaired locations.
(11) Products using cathode ray tubes (CRTs)In regard to such
products, the cathode ray tubes themselves, the high
voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray
emission. Consequently, when servicing these products,
replace the cathode ray tubes and other parts with only the
specified parts. Under no circumstances attempt to modify
these circuits.Unauthorized modification can increase the
high voltage value and cause X-ray emission from the
cathode ray tube.
(12) Crimp type wire connectorIn such cases as when replacing
the power transformer in sets where the connections
between the power cord and power trans former primary
lead wires are performed using crimp type connectors, if
replacing the connectors is unavoidable, in order to prevent
safety hazards, perform carefully and precisely according
to the following steps.
•Connector part number :E03830-001
•Required tool : Connector crimping tool of the proper
type which will not damage insulated parts.
•Replacement procedure
a) Remove the old connector by cutting the wires at a
point close to the connector.Important : Do not
reuse a connector (discard it).
Fig.1-1-3
b) Strip about 15 mm of the insulation from the ends
of the wires. If the wires are stranded, twist the
strands to avoid frayed conductors.
Fig.1-1-4
c) Align the lengths of the wires to be connected.
Insert the wires fully into the connector.
Fig.1-1-5
d) As shown in Fig.1-1-6, use the crimping tool to crimp
the metal sleeve at the center position. Be sure to
crimp fully to the complete closure of the tool.
Fig.1-1-6
e) Check the four points noted in Fig.1-1-7.
Fig.1-1-7
Power cord
cut close to connector
15 mm
Connector
Metal sleeve
1.25
2.0
5.5
Crimping tool
Not easily pulled free Crimped at approx. cente
r
of metal sleeve
Conductors extended
Wire insulation recessed
more than 4 mm

1-4 (No.YF132)
1.1.2 Safety Check after Servicing
Examine the area surrounding the repaired location for damage
or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following
tests and confirm the specified values in order to verify
compliance with safety standards.
(1) Insulation resistance test
Confirm the specified insulation resistance or greater
between power cord plug prongs and externally exposed
parts of the set (RF terminals, antenna terminals, video and
audio input and output terminals, microphone jacks,
earphone jacks, etc.).See table 1 below.
(2) Dielectric strength test
Confirm specified dielectric strength or greater between
power cord plug prongs and exposed accessible parts of
the set (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone
jacks, etc.). See Fig.1-1-11 below.
(3) Clearance distance
When replacing primary circuit components, confirm
specified clearance distance (d), (d') between soldered
terminals, and between terminals and surrounding metallic
parts. See Fig.1-1-11 below.
Fig.1-1-8
(4) Leakage current test
Confirm specified or lower leakage current between earth
ground/power cord plug prongs and externally exposed
accessible parts (RF terminals, antenna terminals, video
and audio input and output terminals, microphone jacks,
earphone jacks, etc.).
Measuring Method : (Power ON)Insert load Z between
earth ground/power cord plug prongs and externally
exposed accessible parts. Use an AC voltmeter to
measure across both terminals of load Z. See Fig.1-1-9
and following Fig.1-1-12.
Fig.1-1-9
(5) Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between
earth pin in AC inlet and externally exposed accessible
parts (Video in, Video out, Audio in, Audio out or Fixing
screw etc.).Measuring Method:
Connect milli ohm meter between earth pin in AC inlet and
exposed accessible parts. See Fig.1-1-10 and grounding
specifications.
Fig.1-1-10
Fig.1-1-11
Fig.1-1-12
NOTE :
These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Chassis
Power cord
primary wire
d'
d
ab
c
V
A
Externally
exposed
accessible part
Z
Exposed accessible part
Grounding Specifications
AC inlet
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z)
Z 0.1 ohm
Z 0.5 ohm
Earth pin
MIlli ohm meter
AC Line Voltage Region
Japan
Europe & Australia
R 1 M /500 V DC
USA & Canada 1 M R 12 M /500 V DC
R 10 M /500 V DC
Insulation Resistance (R)Dielectric Strength Clearance Distance (d), (d')
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
AC 1 kV 1 minute
AC 1.5 kV 1 minute
AC 1 kV 1 minute
(Class )
(Class )
AC 3 kV 1 minute
AC 1.5 kV 1 minute
d, d' 3 mm
d, d' 4 mm
d, d' 3.2 mm
d' 8 m m (Power cord)
d' 6 m m (Primary wire)
d 4 m m
AC Line Voltage Region
Japan
Europe & Australia
USA & Canada
Load Z Leakage Current (i) a, b, c
100 V
110 to 130 V
110 to 130 V
220 to 240 V
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
Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
1
1.5
2
50
0.15

(No.YF132)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 DIFFERENCE LIST
The following table indicate main different points between models GZ-MG21US and GZ-MG31US.
MODEL NAME GZ-MG21US GZ-MG31US
BODY COLOR SILVER GRAY
HDD(BUILT-IN) 20GB 30GB

1-6 (No.YF132)
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·m
(1.0kgf·cm). However, as this is a required value at the time of
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
3.1.3 Disconnection of connectors (Wires)
Fig.3-1-1
3.1.4 Tools required for disassembly and assembly
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.
(∗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.
CN2a
CN2b
MAIN CN101
MAIN CN103
40
10
CONN. No. PIN No.CONNECTOR
Two kinds of double-arrows in connection tables respectively
show kinds of connector/wires.
: The connector of the side to remove
: Wire: Flat wire : Board to board (B-B)
MONI BW CN761
MINI BW CN762
FPC Connector
Wire
FPC Connector
Wire
Wire
FPC Connector Lock
Wire
FPC Connector
Lock
Wire
FPC
Connector
Lock
B-B 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.
· Pull both ends of the connector in the arrow
direction, remove the lock and disconnect the flat
wire.
· Pull the both ends of the board in the direction of the
arrow, and remove 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.
· 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.
Cleaning cloth
KSMM-01
Torque driver
YTU94088
Bit
YTU94088-003
Chip IC replacement jig
PTS40844-2
Tweezers
P-895
( 4) ( 5)( 2) ( 3)( 1)
TOP COVER ASSY
UPPER ASSY
(Inc. VF ASSY,
SPEAKER/MONITOR)
E.VF UNIT(B/W)
C1
C2-1
C2-2
4(S1a), 3(L1a),CN1a
(S2a),2(S2b),3(S2c)
2(SD1a),
L2,CN2a,b
2(S8),L8,CN8a
-
-
NOTE 8
[1]
[2]
[8]
STEP
No. PART NOTE
Fig.
No. POINT

(No.YF132)1-7
3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS
zDisassembly procedure
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 han-
dling 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.11) is located under the JACK COVER
(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.
NOTE10:
When attaching the MIC, be careful with the MIC wiring.
NOTE12a:
Remove the screw (No.30), which tightens up the FPC, be-
fore connecting/ disconnecting the FPC to/ from the connec-
tor.
NOTE12b:
Refer to 3.2.3 ASSEMBLY/DISASSEMBLY OF [12] MONI-
TOR ASSEMBLY for the disassembly of the MONITOR AS-
SY.
NOTE13a:
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 op-
eration by moving the switch levers.
NOTE13b:
When attaching the SPEAKER WIRE, be careful in the wir-
ing and not to catch the WIRE in between.
NOTE16:
When attaching the SPEAKER, be careful with the attach-
ment location. Attach the OPE BOARD ASSY first, and then
follow the figure for the SPKEAKER wiring.
NOTE17:
When attaching the MAIN BOARD ASSY, make sure to in-
sert the corner of the MAIN BOARD ASSY into the slit of the
FRAME ASSY.
NOTE18:
Refer to 3.2.4 ASSEMBLY/DISASSEMBLY OF [18] OP
BLOCK ASSEMBLY/CCD BOARD ASSEMBLY.
zDestination of connectors
BOTTOM COVER ASSY
HDD COVER ASSY
HDD
HDD CASE ASSY
TOP COVER(ZOOM)
ZOOM UNIT
REAR BOARD ASSY
MONI. LOCK CASE ASSY
FRONT COVER ASSY
MIC
UPPER ASSY
MONITOR ASSY
OPE BOARD ASSY
TOP COVER(U) ASSY
POWER SW ASSY
SPEAKER
MAIN BOARD ASSY
OP BLOCK ASSY
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
3(S1),3(L1)
GRIP BELT,2(S2),
JACK COVER(DC),L2a,b,c,d
CN3
3(S4a),2(S4b)
CN5,JACK COVER(REAR),S5,L5a,b
SHIELD(ZOOM),2(S6),2(L6)
4(S7),2(L7a),JACK COVER(REAR),
CN7a,b,L7b,REAR UNIT
2(S8),2(L8)
2(S9a),S9b,CN9
2(S10),L10,BKT(MIC)
S11,L11a,SHIELD(FRAME),
4(S11),L11b,CN11
S12a,CN12,2(S12b),2(L12)
S13,INTER RUPTER,
3(S13),CN13,L13
2(S14),2(L14)
2(S15),2(L15)
4(S16),L16a,b,BKT(UPPER)
CN17a,b,2(S17)
3(S18)
CA1
FA1
FA2
FA3
FA4
FA5
FA6
FA7
FA8
FA9
UA1
UA2
UA3
UA4
FA10
FA11
-
NOTE2a,b,c,d
NOTE3a,b
-
NOTE5
NOTE6
NOTE7
-
-
NOTE10
-
NOTE12a,b
NOTE13a,b
-
-
NOTE16
NOTE17
NOTE18
STEP
No. PART NAME Fig. No. POINT NOTE
CN3 HDD - MAIN CN102 40
CN5 MAIN CN104 ZOOM UNIT - 6
CN7a MAIN CN103 REAR CN6001 53
CN7b REAR CN6002 TRIG SW - 6
CN9 MAIN CN107 MIC - 4
CN11 MAIN CN101 OPERATION CN401 50
CN12 OPERATION CN402 MONI-BL CN7601,7602 24/12,12
CN13 OPERATION CN403 SPEAKER - 2
CN17a MAIN CN105 CCD CN5001 24
CN17b MAIN CN106 OP BLOCK - 26
CN.
No.
PIN
No.
CONNECTOR

1-8 (No.YF132)
Fig.CA1
Fig.FA1
Fig.FA2
Fig.FA3
[1]
1
(S1)
2
(S1)
3
(S1)
L1
4
(S2)
L2d
L2c
L2b L2a
5
(S2)
[2]
NOTE2c
NOTE2a
GRIP BELT
NOTE2b
NOTE2d
JACK COVER(DC)
a
[3]
MARK
NOTE3a
NOTE3b
a
CN3
[4]
6
(S4a)
9
(S4b)
10
(S4b)
7
(S4a) 8
(S4a)

(No.YF132)1-9
Fig.FA4
Fig.FA5
Fig.FA6
Fig.FA7
NOTE5
NOTE6
[5]
[6]
11
(S5)
12
(S6)
CN5
13
(S6)
L5b
L5a
JACK COVER
(REAR)
L6
SHIELD
(ZOOM)
<NOTE6>
[7]
REAR UNIT
JACK COVER
(REAR)
L7b
L7a
CN7a
CN7b
14
(S7)
15
(S7)
16
(S7)
17
(S7)
NOTE7
[8]
18
(S8) 19
(S8)
L8
[9]
22
(S9b)
CN9
20
(S9a)
21
(S9a)

1-10 (No.YF132)
Fig.FA8
Fig.FA9
Fig.UA1
Fig.UA2
[10]
23
(S10)
24
(S10)
WIRE
BKT(MIC)
L10
NOTE10
25
(S11)
L11a
26
(S11)
26
(S11)
27
(S11)
CN11
28
(S11)
L11b
29
(S11)
SHIELD(FRAME)
[11]
CN12
FPC
[12]
30
(S12a)
31
(S12b)
32
(S12b)
L12
:0.245N m(2.5kgf cm)
NOTE12a
NOTE12b
NOTE13b
NOTE13a
NOTE13a
36
(S13)
33
(S13)
INTERRUPTER
35
(S13)
CN13
L13
34
(S13)
[13]

(No.YF132)1-11
Fig.UA3
Fig.UA4
Fig.FA10
Fig.FA11
38
(S14)
39
(S15)
L14
L15
40
(S15)
37
(S14)
[14] [15]
[16]
BKT(UPPER)
42
(S16)
L16a L16b
41
(S16)
43
(S16)
WIRE
44
(S16)
NOTE16
NOTE17
45
(S17) 46
(S17)
CN17b
CN17b
CN17a
CN17a
[17]
[18]
FRAME ASSY
47
(S18)
48
(S18)
49
(S18)
:0.118N m(1.2kgf cm)
NOTE18

1-12 (No.YF132)
3.2.3 ASSEMBLY/DISASSEMBLY OF [12] 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 AS-
SEMBLY by removing the six hooks (L12a-f).
(2) Pull out the U/D SWITCH BOARD from the MONITOR
CASE ASSEMBLY.
NOTE12a:
During the procedure, be careful in handling the FPC.
(3) Release the lock of the connector (CN12a,b), and re-
move the HINGE UNIT by lifting it up.
(4) Release the lock of the connector (CN12c,d), and pull
out the FPC.
(5) Remove the two screws (4,5), and Remove the MONI-
BL BOARD ASSEMBLY by removing the hook (L12h).
(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).
NOTE12b:
During the procedure, be careful in handling the MAG-
NET and be careful with its attachment direction. Make
sure to attach the MAGNET with its mark facing inward.
NOTE12c:
During the procedure, be careful in handling the FPC.
NOTE12d:
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).
Fig.3-2-3
a
a
b
b
BL FPC
LCD FPC
FPC
<NOTE12a>
NOTE12c
1
(S12a)
2
(S12a)
4
(S12c)
L12h
CN12a
U/D SWITCH
CN12c
CN12d
CN12b
5
(S12c)
3
(S12b)
L12a
L12b
L12c L12d
L12e
L12f
0.245N m(2.5kgf cm)
MONI.COVER
ASSY
BACK LIGHT
LCD MODULE
LCD BKT
MONI.CASE
ASSY
MONI BOARD
ASSY
NOTE12b
HINGE COVER(U)
MAGNET
FPC
NOTE12c,d
HINGE UNIT
NOTE12d
HINGE COVER(L)
6
(S12d) 7
(S12d)
<NOTE14c,d>
<NOTE12b>
MAGNET
HINGE
COVER(U)
Marking in this side.
U/D SWITCH
L14g

(No.YF132)1-13
3.2.4 ASSEMBLY/DISASSEMBLY OF [18] 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, at-
tached dust or scratching. If fingerprints are present on
the surface they should be wiped away using either a sil-
icon 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 reat-
tach the OP LPF in its original direction.
zDisassembly of OP BLOCK ASSEMBLY / CCD BOARD AS-
SEMBLY
(1) Unsolder the fourteen soldered points (SD18a) of the
CCD BOARD ASSEMBLY.
(2) Remove the two screws (1, 2), and then remove the CCD
BOARD ASSEMBLY, SHIELD CCD and the CCD BASE
ASSEMBLY.
NOTE18a:
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.
NOTE18b:
Replace the CCD IMAGE SENSOR as a CCD BASE
ASSEMBLY, not as a single part replacement.
zAssembly of OP BLOCK ASSEMBLY / CCD BOARD AS-
SEMBLY
(1) Set the OPTICAL LPF first, and then the SHEET to the
OP BLOCK ASSEMBLY.
NOTE18c:
Pay careful attention to the orientation of the OPTICAL
LPF.
(2) Attach the CCD BASE ASSEMBLY first then the SHIELD
CCD, CCD BOARD ASSEMBLY so that the SHEET
stays in place, and tighten with the two screws (1, 2).
(3) Solder the 14 points (SD18a) on the CCD BOARD AS-
SY.
zReplacement of service repair parts
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
NOTE18d:
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.
NOTE 18e:
The AUTO IRIS UNIT includes the FPC ASSEMBLY and
two sensors.
Fig.3-2-4
CCD BOARD ASS'Y
SD18a
1
(S18a) 2
(S18a)
CCD BASE ASS'Y
OP BLOCK ASS'Y
SENSOR SENSOR
SD18b
SD18b
AUTO IRIS UNIT
FOCUS MOTOR
UNIT
ZOOM MOTOR UNIT
SHEET
OPTICAL LPF
SHIELD CCD
<CCD BASE>
7
(S18b)
0.147N m(1.5kgf cm)
0.078N m(0.8kgf cm)
OP
side
CCD
side
Blue
NOTE18c
NOTE18d
NOTE18d,e
NOTE18d
NOTE18a,b
NOTE18a
NOTE18a
NOTCH PART
8
(S18b)
9
(S18b)
4
(S18b)
3
(S18b)
5
(S18b)
6
(S18b)

1-14 (No.YF132)
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
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 sur-
face.
•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.
Service Support System
YTU94057-94
INF Adjustment Lens
YTU92001B
INF Adjustment Lens Holder
YTU94087
Mini Stand
YTU93108
Light box Assembly
YTU93096A
Gray Scale Chart
YTU94133A
Color Bar Chart
YTU94133C
Communication Cable
YTU93107B
PC Cable
QAM0099-002
Torque Driver
YTU94088
Bit
YTU94088-003
Chip IC Replacement Jig
PTS40844-2
Tweezers
P-895
Cleaning Cloth
KSMM-01
Jig Connector Cable
YTU93106A

(No.YF132)1-15
•INF adjustment lens holder
To be used together with the Camera stand for operating the
Videocamera in the stripped-down condition such as the sta-
tus 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.
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 pow-
er “ON”, communication error may occur.
Fig.4-2-1
CAUTION
The JIG CONNECTOR CABLE cannot be connected with
the COVER (JIG) removed because of its structure. It is nec-
essary to cut a part of the connector board as shown below.
Pay special attention during the procedure.
PC CABLE
FOR
COMMUNICATION CABLE
COVER(JIG)
COMMUNICATION CABLE
JIG CONNECTOR
CABLE
TO NU_RX
TO NU_TX
TO GND
MENU
RS232C
COM PORT
SERVICE
SUPPORT
SYSTEM
COMMUNICATION
CABLE
JIG CONNECTOR
PERSONAL COMPUTER
RED
WHITE
BLACK
JIG
CONNECTOR
1
23
: The part to be cut
JIG CONNECTOR CABLE [YTU93106A]

1-16 (No.YF132)
Jig connector diagrams
Fig.4-2-2
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
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
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
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JIG CONNECTOR CABLE (YTU93106A)
MAIN CN110 JIG CONN. BOARD
(PIN NO.)

(No.YF132)1-17
SECTION 5
TROUBLE SHOOTING
5.1 SERVICE NOTE
[18]
3-2-4
[12]
3-2-3
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
1 2 3 4 5 - 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
CA1 FA1 FA2
a
FA4
FA3 FA5 FA6 FA7 FA8
ab ed
-
[11] [12] [13] [14] [15] [16] [17] [18]
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
FA9 UA1
aab c
UA2 UA3 UA4 FA10 FA11
1 2 3 4 5 6 7 1 2 3 4 5 6 7 8 9
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing (Fig.No.)
Screw tightening torque
CABINET PARTS AND ELECTRICAL PARTS(1) [12]MONITOR ASSY CABINET PARTS AND ELECTRICAL PARTS(2)
[18]OP BLOCK ASSY/CCD BOARD ASSY
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 : 0.245N 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.YF132)
Camcorder Category 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan
Victor Company of Japan, Limited
VPT
Printed in Japan