Page 1
COMPACT VHS CAMCORDER
JVC SERVICE & ENGINEERING COMPANY OF AMERICA
DIVISION OF JVC AMERICAS CORP.
Head office
East Coast
Midwest
West Coast
Atlanta
Hawaii
1700 Valley Road Wayne, New Jersey 07470-9976
:
10 New Maple Avenue Pine Brook, New Jersey 07058-9641
:
705 Enterprise Street Aurora, Illinois 60504-8149
:
5665 Corporate Avenue Cypress, California 90630-0024
:
1500 Lakes Parkway Lawrenceville, Georgia 30043-5857
:
2969 Mapunapuna Place Honolulu, Hawaii 96819-2040
:
(973)315-5000
(973)396-1000
(630)851-7855
(714)229-8011
(770)339-2582
(808)833-5828
JVC CANADA INC.
Head office
Montreal
Vancouver
:
21 Finchdene Square Scarborough, Ontario M1X 1A7
:
16800 Rte Trans-Canadienne, Kirkland, Quebec H9H 5G7
:
13040 Worster Court Richmond, B.C. V6V 2B3
(416)293-1311
(514)871-1311
(604)270-1311
S40895-03
GR-AXM230U/SXM330U/SXM930U
GR-AXM230U/SXM330U/SXM930U
SPECIFICATIONS
Camcorder
General
Format : S-VHS/VHS NTSC standard
No. 86595
Power source : DC 11 V
Power consumption
Viewfinder on : 4.7 W
LCD monitor on : 5.4 W
Video light : 3.0 W
Signal system : NTSC-type
Video recording system
Luminance : FM recording
Color : Converted sub-carrier
Cassette : / cassette
Tape speed
SP : 33.35 mm/sec. (1-5/16 ips)
EP : 11.12 mm/sec. (7/16 ips)
Recording time (max.)
SP : 40 minutes
EP : 120 minutes (with TC-40)
D.S.C. format
Recording format : Digital data storage
Recording medium : Built-in flash memory,
Number of storable shots
FINE mode : approx. 30 shots
STANDARD mode: approx. 60 shots
(Using AC Adapter)
DC 6 V
(Using battery pack)
direct recording
Conforms to VHS standard
(based on JPEG)
2 Mbyte
(The specifications shown pertain specifically to the model GR-SXM930)
Image size : 640 x 480 pixels
Operating
temperature :0°C to 40°C (32°F to 104°F)
Operating humidity : 35% to 80%
Storage temperature : –20°C to 50°C
Weight : Approx. 930 g (2.1 lbs)
Dimensions : 206 mm x 112 mm x 118 mm
Pickup : 1/4" format CCD
Lens : F1.6, f = 3.9 mm to 62.4 mm,
Viewfinder : Electronic viewfinder with
White balance
adjustment : Auto/Manual adjustment
LCD monitor : 3" diagonally measured, LCD
Speaker : Monaural
Connectors
Video :1 V (p-p), 75 Ω unbalanced,
Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and specifications subject to change
without notice.
(when captured on a PC)
(–4°F to 122°F)
(8-1/8" x 4-7/16" x 4-11/16")
(with the LCD monitor closed
and with the viewfinder fully
tilted downward)
16:1 power zoom lens with
auto iris and macro control,
filter diameter 40.5 mm
0.55" color LCD
panel/TFT active matrix
system
analog output
(via Video output connector)
Audio : 300 mV (rms), 1 kΩ analog
Digital : ø2.5 mm, 4-pole, mini-head
S-Video : Y :1 V (p-p), 75 Ω,
AC Adapter AP-V10U
Power requirement
U.S.A. and Canada : AC 120 V`, 60 Hz
Other countries : AC 110 V to 240 V`,
Output : DC 11 V , 1 A
Dimensions : 59 mm x 31 mm x
(W x H x D) 69 mm (2-3/8" x 1-1/4" x
Weight : Approx. 130 g (0.29 lbs)
Optional Accessories
•Battery Packs BN-V12U, BN-V20U, BN-V400U
•A/V (Audio/Video) Cable
•S-Video Cable QAM0004-004
• Compact S-VHS ( ) Cassettes ST-C-40/30/20
•Compact VHS ( ) Cassettes TC-40/30/20
•Active Carrying Bag CB-V7U
Some accessories are not available in some areas.
Please consult your nearest JVC dealer for details on
accessories and their availability.
output
(via Audio output connector)
jack
analog output
C : 0.29 V (p-p), 75 Ω,
analog output
50 Hz/60 Hz
2-3/4")
Printed in Japan
This service manual is printed on 100% recycled paper.
COPYRIGHT
© 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 86595
November 2000
Page 2
TABLE OF CONTENTS
Section Title Page
Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 SERVICE CAUTIONS .......................................................... 1-1
1.1.1 Precautions .................................................................. 1-1
1.1.2 How to read the disassembly and assembly ................1-1
1.1.3 Connection of the wires ................................................ 1-1
1.2 TOOLS REQUIRED FOR ADJUSTMENTS ......................... 1-2
1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS ............. 1-3
1.3.1 Disassembly flow chart .................................................1-3
1.3.2 Disassembly method .................................................... 1-3
1.4 DISASSEMBL Y/ASSEMBLY OF CAMERA SECTION
AND DECK SECTION .......................................................... 1-9
1.4.1 Flowchart of disassembly ............................................. 1-9
1.4.2 Disassembly method .................................................... 1-9
1.5 REPLACEMENT OF CCD IMAGE SENSOR ..................... 1-12
1.5.1 Removal of CCD image sensor .................................. 1-12
1.5.2 Installation of new CCD image sensor ....................... 1-12
1.5.3 Replacement of CCD board assy ............................... 1-12
1.6 TAKE OUT CASSETTE TAPE ............................................ 1-13
1.7 EMERGENCY DISPLAY..................................................... 1-14
1.8 DEMONSTRATION MODE ................................................ 1-14
1.9 SERVICE NOTE ................................................................. 1-16
2. MECHANISM ADJUSTMENT
2.1 SERVICE CAUTIONS ............................................................ 2-1
2.1.1 Precautions .................................................................... 2-1
2.1.2 How to read the disassembly and assembly
(For Mechanism Parts) .................................................. 2-1
2.1.3 Required adjustment tools ............................................. 2-1
2.2 DISASSEMBLY/ASSEMBLY OF MECHANISM PARTS ........ 2-2
2.3 CHECKUP AND ADJUSTMENT OF MECHANISM
PHASE ................................................................................. 2-6
2.4 TAPE TRANSPORT ADJUSTMENT .................................... 2-7
2.4.1 Back tension ................................................................. 2-7
2.4.2 Tape pattern ................................................................. 2-7
2.4.3 A/CTL head height & azimuth ...................................... 2-8
2.4.4 Phase of control head (X value) ................................... 2-9
2.5 REMARKS............................................................................ 2-9
2.5.1 Cleaning ....................................................................... 2-9
2.5.2 Applying oil and grease ................................................ 2-9
2.5.3 Checkup ....................................................................... 2-9
2.6 JIG CONNECTOR CABLE CONNECTION ........................ 2-10
3. ELECTRICAL ADJUSTMENT
3.1 ELECTRICAL ADJUSTMENT............................................... 3-1
3.1.1 PREPARATION ............................................................ 3-1
3.2 MONITOR ADJUSTMENT.................................................... 3-3
3.2.1 V COM.......................................................................... 3-3
3.3 ELECTRONIC VIEWFINDER (E. VF) ADJUSTMENT ......... 3-4
3.3.1 Tilt................................................................................. 3-4
3.3.2 Centering...................................................................... 3-4
3.3.3 Vertical scanning .......................................................... 3-4
3.3.4 Brightness .................................................................... 3-4
3.3.5 Focus............................................................................ 3-4
Section Title Page
4. CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM ................................... 4-1
CIRCUIT BOARD NOTES.................................................... 4-2
4.1 BOARD INTERCONNECTIONS .......................................... 4-3
4.2 CPU SCHEMATIC DIAGRAM .............................................. 4-5
4.3 VTR ASP SCHEMATIC DIAGRAM.......................................4-7
4.4 MECHA MDA SCHEMATIC DIAGRAM ................................ 4-9
4.5 VTR DSP SCHEMATIC DIAGRAM .................................... 4-11
4.6 DSP SCHEMATIC DIAGRAM............................................. 4-13
4.7 IRIS & AF/ZOOM SCHEMATIC DIAGRAM ........................ 4-15
4.8 VIDEO OUT SCHEMATIC DIAGRAM ................................ 4-17
4.9 REGULATOR SCHEMATIC DIAGRAM..............................4-19
4.10 LCD CTL SCHEMATIC DIAGRAM
(FOR AXM230/SXM330) ................................................... 4-21
4.11 LCD CTL SCHEMATIC DIAGRAM (FOR SXM930) ........... 4-23
4.12 JACK AND CCD SCHEMATIC DIAGRAMS ....................... 4-25
4.13 SPEAKER AND MONITOR SCHEMATIC DIAGRAMS ...... 4-27
4.14 C-VF BL SENSOR SCHEMATIC DIAGRAM ...................... 4-29
4.15 DSC SCHEMATIC DIAGRAM ............................................ 4-31
4.16 TOP OPE UNIT, ZOOM UNIT, REAR UNIT
AND SENSOR SCHEMA TIC DIAGRAMS ........................... 4-33
4.17 ELECTRONIC VIEWFINDER SCHEMATIC DIAGRAM ......... 4-35
4.18 MAIN CIRCUIT BOARD ..................................................... 4-37
4.19 CCD AND C-VF BL CIRCUIT BOARDS ............................. 4-43
4.20 MONITOR CIRCUIT BOARD .............................................4-45
4.21 DSC CIRCUIT BOARD.......................................................4-47
4.22 ELECTRONIC VIEWFINDER CIRCUIT BOARD ............... 4-49
4.23 POWER SYSTEM BLOCK DIAGRAM ............................... 4-51
4.24 CPU/MDA SYSTEM BLOCK DIAGRAM ............................ 4-53
4.25 CAMERA SYSTEM BLOCK DIAGRAM.............................. 4-55
4.26 Y/C SYSTEM BLOCK DIAGRAM .......................................4-59
4.27 MONITOR SYSTEM BLOCK DIAGRAM ............................4-61
4.28 WAVEFORMS ....................................................................4-63
4.29 VOLTAGE CHARTS ........................................................... 4-64
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY <M1> ................ 5-1
5.2 FINAL ASSEMBLY <M2> .....................................................5-3
5.3 MECHANISM ASSEMBLY <M3> .........................................5-6
5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4>
(SXM930U/UC)..................................................................... 5-8
5.4 ELECTRONIC VIEWFINDER ASSEMBLY <M4>
(AXM230U/UC/SXM330U/UC) ............................................. 5-9
5.5 MONITOR ASSEMBL Y <M5>............................................. 5-10
5.6 ELECTRICAL PARTS LIST ................................................ 5-11
MAIN BOARD ASSEMBLY <01>........................................ 5-11
CCD BOARD ASSEMBLY <02> ......................................... 5-18
C-VF BL BOARD ASSEMBLY <06> E,F ............................ 5-19
MONITOR BOARD ASSEMBLY <07> ................................5-19
DSC BOARD ASSEMBLY <08> E,F...................................5-19
E. VF BOARD ASSEMBLY <50>........................................ 5-20
The following table lists the differing points between Models GR-AXM230U/UC, GR-SXM330U/UC and GR-SXM930U/UC in this series.
GR-AXM230U GR-SXM330U GR-SXM930U
VIEW FINDER B/W B/W COLOR
LCD MONITOR 2.5* 2.5* 3.0*
BODY COLOR MOLD BLACK MET ALLIC GRAY SILVER
DIGIT AL STILL CAMERA NOT USED NOT USED USED
SHUTTER SOUND NOT USED NOT USED USED
SNAP SHOT NOT USED USED (FULL ONLY) USED (FULL & PIN-UP)
NIGHT ALIVE NOT USED USED USED
5SEC REC SW USED NOT USED NOT USED
S-VHS SW NOT USED USED USED
S OUTPUT NOT USED USED USED
PC TERMINAL NOT USED NOT USED USED
RCU UNIT NOT USED RM-V715U RM-V715U
PC CONNECTION CABLE NOT USED NOT USED PROVIDE
CD-ROM NOT USED NOT USED PROVIDE
Page 3
SECTION 1
DISASSEMBLY
1.1 SERVICE CAUTIONS
1.1.1 Precautions
1. Before disassembling/re-assembling the set as well as
soldering parts, make sure to disconnect the power
cable.
2. When disconnecting/connecting connectors, pay enough
attention to wiring not to damage it.
3. In general, chip parts such as resistor, shorting jumpers
(0-ohm resistor), ceramic capacitors, diodes, etc. can not
be reused after they were once removed.
4. When installing parts, be careful not to do with other parts
as well as not to damage others.
5. When removing ICs, be careful not to damage circuit
patterns.
6. Tighten screws properly during the procedures. Unless
specified otherwise, tighten screws at torque of 0.196 N·m
(2.0 kgf·cm).
1.1.2 How to read the disassembly and assembly
(For Cabinet Parts)
STEP
/LOC PART
NO.
CASSETTE
1
COVER ASSEMBLY
Fig.
No.
C1 2(S1)
REMOVAL
*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/
UNSOLDER
1.1.3 Connection of the wires
1. Pull the connector structure upward to release the clamp
when removing or inserting the flat wire cable.
Wire
Connector
Fig. 1-1-1
Wire
2
UPPER CASE C2 2(S2), (L2)
LOWER CASE C3 9(S3), (L3a), (L3b)
3 ASSEMBLY(INCL. *CN 3a 3b
E. VF. ASSEMBLY) CAP (RCA jack)
▲▲
(1) (2) (3) (4)
(1) Order of steps in Procedure
When reassembling, preform the step(s) in the reverse
order. These numbers are also used as the identifica-
tion (location) No. of parts Figures.
(2) Part to be removed or installed.
(3) Fig. No. showing Procedure or Part Location.
C = Cabinet
CA = Camera
D = Deck
(4) Identification of part to be removed, unhooked, unlocked,
released, unplugged, unclamped or unsoldered.
P = Spring
W = Washer
S = Screw
* = Unhook, unlock, release, unplug or unsolder.
2(S3) = 2 Screws (S3)
CN = Connector
(5) Adjustment information for installation.
▲
▲
NOTE:
Connector
After removing the wire, return the stopper to
its original position, because it is apt to come
off if it is left open.
Fig. 1-1-2
1-1
Page 4
1.2 TOOLS REQUIRED FOR ADJUSTMENTS
Alignment tape
(for SP interchangeability)
1
MHP-C
Alignment tape
(for N. SP PB Y/C level)
2
MHV-2C
15 16
PC cable
QAM0099-002
Cleaning cloth
KSMM-01
3
5
78
910
11 12
13
Torque driver
YTU94088
INF adjustment lens
YTU92001B
Gray Scale Chart
YTU94133A
INF lens holder
YTU94087
Camera stand
YTU93079
Jig connector cable
YTU93106A
4
6
Light box Assembly
Service support system software
14
Bit
YTU94088-003
Conn. ring
YTU92001-111
Color Bar Chart
YTU94133C
YTU93096A
Extension connector
YTU94145B-30
YTU94057-51
Table 1-2-1
1,2. Alignment tape
To be used for check and adjustment of interchangeability
of the mechanism.
(Video: Color bar signal, Audio: Non-signal)
3. Torque driver
Be sure to use to fastening the mechanism and exterior
parts because those parts must strictly be controlled for
tightening torque.
4. Bit
This bit is slightly longer than those set in conventional
torque drivers.
5. INF adjustment lens
To be used for adjustment of the camera system.
6. Conn. ring
The connector ring to attach the INF. lens to the head of
the OP lens.
7. Gray scale chart
To be used for adjustment of the camera system.
8. Color bar chart
To be used for adjustment of the camera system.
9. INF lens holder
To be used together with the camera stand (11) for
operating the VideoMovie 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.
10. Light box assembly
To be used for adjustment of the camera system.
11. Camera stand
To be used together with the INF adjustment lens holder.
12. Extention connector
To be used to JIG connector cable
13. JIG connector cable
Connected to CN25 of the main board and used for
measuring error rates, etc.
14. Service support system software
To be used for adjustment with a personal computer.
15. PC cable
To be used to connect the VideoMovie and a personal
computer with each other when a personal computer is
used for adjustment.
16. Cleaning cloth
Recommended cleaning cloth to wipe down the video
heads, mechanism (tape transport system), optical lens
surface.
1-2
Page 5
1.3 DISASSEMBLY/ASSEMBLY OF CABINET PARTS
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. Bend, route and dress the flat cables as they were originally.
1 Cassette cover assembly
2 Upper case
▼
▼
3 Lower case assembly
(Incl. E. VF assembly)
▼
4 E. VF assembly
▼
5 Top operation unit assembly
6 Rear unit
▼
▼
7 Front cover assembly
(Incl. Microphone,
DC light assembly)
▼
8 Microphone
9 DC light assembly
▼
▼
▼
0 Monitor assembly
- Front frame assembly
▼
1.3.2 Disassembly method
STEP
/LOC PART
NO.
Fig.
No.
REMOVAL
*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/
UNSOLDER
1 CASSETTE C1 2(S1)
COVER ASSEMBLY
2
UPPER CASE C2 2(S2), (L2)
3 LOWER CASE C3 9(S3), (L3a), (L3b)
ASSEMBLY (INCL. *CN 3a 3b
E. VF ASSEMBLY) CAP (RCA jack)
4 E. VF ASSEMBLY C4 3(S4)
5 TOP OPERATION C5 2(S5), (L5a), (L5b), (L5c)
UNIT ASSEMBLY *CN 5a
6 REAR UNIT C6 3(S6), (L6a), (L6b)
*CN 6a
7 FRONT COVER C7 2(S7a), (S7b), (L7a), (L7b)
ASSEMBLY (INCL. MIC *CN 7a
DC LIGHT ASSEMBLY)
8 MICROPHONE (S7a)
9 DC LIGHT ASSEMBLY 2(L7c)
0 MONITOR ASSEMBLY C8 2(S8a), (S8b)
*CN 8a
C9 2(S9a), (S9b), (S9c)
C10 2(S10a), 2(S10b), 2(S10c),
(L10a), (L10b), (L10c)
C11 (L11a), (L11b), (L11c)
*CN 11a , 11b , 11c
C12 2(S12a), (S12b), 2(L12a)
- FRONT FRAME C13 2(S13)
ASSEMBLY
List of Abbreviations:
2(S1)=2 screws (S1)
4(L1a)=4 Locking Tabs
CN=Connector
Reference Notes:
<NOTE 1>
Destination of connectors
Note:
Two kinds of double-arrows in connection tables
respectively show kinds of connector/wires.
: Flat wire
: Wire
Con- No. of
nector Pins
3a 2 SPEAKER MAIN CN27
20 C-VF BL CN7551 MAIN CN11
3b
5 E. VF (B/W) MAIN CN12
5a 12 TOP OPERATION UNIT MAIN CN18
6a 13 REAR UNIT MAIN CN28
7a 2 MIC MAIN CN8
8a 33 MONITOR ASSEMBLY MAIN CN16
11a 28 MONITOR CN7501 T. HINGE
11b 24 MONITOR CN7502 LCD MODULE
11c 2 MONITOR CN7503 BACK LIGHT
Connector
1-3
Page 6
2
(L2)
3
(S2)
4
(S2)
<NOTE 2, 3>
(1) The FPC assembly should be winded around the hinge
assembly by two and half turns so that the wire to be
connected to the monitor board assembly is positioned
inside.
(2) The upper and lower hinge covers should be mounted so
carefully the any wire is not caught into either of the
covers.
Fig. C2
1
(S1)
2
(S1)
1
Fig. C1
5
(S3)
3b
CN12
FOIL
SIDE
CN11
COMPONENT
SIDE
8
(S3)
6
(S3)
7
(S3)
(L3b)
3a
(L3a)
9
(S3)
CAP
(RCA jack)
13
(S3)
10
(S3)
12
(S3)
3
11
(S3)
1-4
Fig. C3
Page 7
5
5a
18
(S5)
17
(S5)
(L5c)
(L5a)
(L5b)
<GR-AXM230
/GR-SXM330>
4
<GR-SXM930>
4
16
(S4)
14
(S4)
15
(S4)
Fig. C4
6a
(L6a)
Fig. C5
(L6b)
20
(S6)
19
(S6)
6
21
(S6)
Fig. C6
1-5
Page 8
(L7c)
(L7a)
7
22
(S7a)
23
(S7a)
(S7a)
25
7a
9
(L7b)
24
(S7b)
8
Fig. C7
8a
10
1-6
Fig. C8
28
(S8b)
26
(S8a)
27
(S8a)
Page 9
Bracket (Upper) ASSY
10
29
(S9a)
37
(S10c)
38
(S10c)
32
(S9c)
31
(S9b)
Fig. C9
Upper case assy
Monitor cover
(L10a)
(L10b)
30
(S9a)
(L10c)
33
(S10a)
34
(S10a)
36
(S10b)
35
(S10b)
: 0.118 N·m (1.2 kgf·cm)
Fig. C10
1-7
Page 10
LCD module
(
)
(L11b)
Holder
Back light
(L11c)
Monitor case
(L11a)
T.Hinge assy
Fig. C11
Reinforced
surface
11a
Monitor
<07>
11c
11b
1-8
Cover (Hinge U)
Cover (Hinge L)
Hinge
39
(S12a)
(L12a)
40
(S12a)
Plate (SW)
41
S12b
FPC
Push switch
Reinforced
surface
Reinforced
surface
Hinge
Note 2,3
FPC
Fig. C12
Page 11
42
(S13)
11
: 0.098 N·m (1.0 kgf·cm)
1.4 DISASSEMBLY/ASSEMBLY OF CAMERA SECTION AND DECK SECTION
1.4.1 Flowchart of disassembly
The following flowchart shows the disassembly of the camera
section and deck section. When assembly of the camera
section and deck section, follow this flowchart in the reverse
order.
<Camera section/Deck section>
1
2
DSC board assembly
▼
Zoom unit assembly
▼
(Only for
SXM930)
3 Main board assembly
▼
4 OP block assembly
(Incl. CCD board assembly)
▼
4 OP block assembly
4
CCD board assembly
For details of disassembly of
manner, refer to page 1-12,
“1.5 REPLACEMENT OF
▼
CCD IMAGE SENSOR.
▼
5 Frame assembly
6 Cassette housing assembly
▼
Fig. C13
1.4.2 Disassembly method
STEP
/LOC PART
NO.
1 DSC BOARD D1 2(S1), (L1a), (L1b), (L1c)
ASSEMBLY *CN 1a , 1b
2 ZOOM UNIT D2 3(S2)
ASSEMBLY *CN 2a
3 MAIN BOARD D3 (S3), (L3a), (L3b)
4 OP BLOCK D4 2(S4)
ASSEMBLY CUSHION (OP)
5 FRAME ASSEMBLY D5 (S5a), 2(S5b), (S5c)
6 CASSETTE D6 4(S6)
HOUSING
ASSEMBLY
List of Abbreviations:
2(S1) = 2 Screws (S1)
4(L1a)=4 Locking Tabs (L1a)
CN=Connector
43
(S13)
Fig.
No.
*UNLOCK/RELEASE/
UNPLUG/UNCLAMP/
UNSOLDER
HOLDER (DSC)
4(S2)
*CN 2a
*CN 3a , 3b , 3c , 3d , 3e
3f , 3g , 3h
REMOVAL
1-9
Page 12
Reference Notes:
2
4
(S2)
6
(S2)
3
(S2)
NOTE
5
(S2)
2a
<NOTE 1>
Destination of connectors
Note:
Two kinds of double-arrows in connection tables respectively show kinds of connector/wires.
: Flat wire
: Wire
Con- No. of
nector Pins
Connector
1a 2 MAIN J4001/J4002 DSC JP8001/JP8002
1b 39 MAIN CN19 DSC CN8001
2a 14 MAIN CN13 ZOOM UNIT
3a 14 MAIN CN2 SENSOR
3b 11 MAIN CN5 VIDEO/FLY. E HEAD
3c 10 MAIN CN1 DRUM MOTOR
3d 6 MAIN CN4 (PIN 1,2)
MAIN CN4 (PIN 5,6)
LOADING MOTOR
DC LIGHT
(OPEN TWO PINS OF
THE CENTER AND
CONNECT)
3e 22 MAIN CN15 OP BLOCK
3f 18 MAIN CN3 CAPSTAN MOTOR
3g 11 MAIN CN7 A/C HEAD
3h 14 MAIN CN22
CCD
<NOTE 2>
Open two pins of the cennter and connect CN4 as shown in
Fig.
Note:
Regarding the DSC model, the screw "3" has been
removed together with the DSC board.
Fig. D2
(S1)
(S1)
3
3h
(L1a)
1
2
1a
HOLDER (DSC)
1
1b
(L1c)
(L1b)
3a
7
(S3)
Fig. D1
3b
3c
3g
3e
3d
3f
White
Fig. D3
Note1
Red
Red
(L3a)
(L3b)
1-10
Page 13
4
16
(S6)
14
(S6)
17
(S6)
15
(S6)
6
9
(S4)
8
(S4)
Cushion (OP)
Fig. D4
5
11
(S5b)
10
(S5a)
c
12
(S5b)
Fig. D6
13
(S5c)
✽ : 0.108 N·m (1.1 kgf·cm)
Fig. D5
1-11
Page 14
1.5 REPLACEMENT OF CCD IMAGE SENSOR Notes:
•
Pay the most careful attention to the transparent glass
and optical LPF of the CCD image sensor so a not the
soil and damage them. If something is soiled with finger-prints, etc., gently clean it with silicon-processed
paper/cloth or chamois.
• When the CCD image sensor is shipped from the fac-
tory, there are protection seals applied onto the transparent glass. Leave the protector as it is, and take it off just
before assembling the CCD image sensor to the OP
block.
1.5.1 Removal of CCD image sensor
1. Remove two screws (1, 2) securing the CCD base assy,
and disassemble the CCD spacer, the optical LPF,
spacer rubber.
1.5.2 Installation of new CCD image sensor
1. Remove the protection seal from a new CCD image sensor. Next, put the optical LPF, spacer rubber, CCD spacer
on the CCD image sensor as they are piled up in this
order. At that time, make sure of orientation of each item
refering to the following table (see Fig. 1-5-1).
Part Name Orientation
CCD image sensor Mark is on the right viewed as indi-
cated by the arrow a .
Spacer rubber IC side is horizontal.
Optical LPF Marks are on the left and bottom
viewed as indicated by the arrow
a .
2. Fix the CCD base assy to OP block with the two screws
(1, 2) . At that time, be careful of the orientation.
3. After completion of all P.C. boards to the camera section, observe the monitor to confirm no vignetting caused
by the bodytube, rings, lens hood, etc. If no vignetting is
observed, it can be said that image's parallel, horizontality
and centering are correct.
1.5.3 Replacement of CCD board assy
1. Remove one screw (3).
2. Unsolder at the fourteen points on the CCD board assy.
1. Remove the screw (3) only when the CCD board
Note:
assy needs replacement.
2. When installing a new CCD board assy, carry out the
above-mentioned procedure in the reverse order.
Optical LPF
Blue
OP
side
CCD
side
(S1a)
CCD base assembly
CCD spacer
Spacer rubber
a
3
1
2
(S1a)
(S1b)
CCD board
assembly
1-12
Fig. 1-5-1
Page 15
1.6 TAKE OUT CASSETTE TAPE
In the event that the set enters the emergency mode as it is
loaded with a cassette tape and the cassette tape cannot
be ejected with the EJECT button, manually, take it out of
the set according to the following procedure.
Note:
If the mechanism comes into the unloading mode as
the cassette tape is not held by hand, it results in tape
damage.
1. Disconnect the set from the power source.
2. Remove the cassette cover assembly, Upper case,
Lower case assembly, Top operation assembly, Monitor
assembly (See Fig. C1, C2, C3, C5 and C8, Page 1-1
to 1-6).
Battery
3. Connect a jumper wire to each pole of the loading motor
as shown by the magnified view b (Fig. 1-6-1)
4. While holding down the cassette housing by hand, connect the jumper wires to a battery to run the mechanism
to the EJECT position four unloading. If this unloading
operation is performed as the cassette housing is not
held down by hand, the front lid of the cassette may
damage the tape when it is ejected.
5. For taking in the slack of the tape, run the mechanism
to the EJECT position as the front lid of the cassette is
left open, and turn the take-up gear in the forward direction to wind up the tape. After confirming that the tape
has completely been wound up and the supply reel is
idling, take the cassette tape out of the cassette housing.
Magnified view
Top view
b
Take-up gear
Fig. 1-6-1
1-13
Page 16
1.7 EMERGENCY DISPLAY
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Whenever some abnormal signal is input to the
mechacon CPU, an error number (E01, as an exam-
• In an emergency mode, all operations except
turning on/off the POWER switch are ineffectual.
ple) is displayed in the electronic view finder.
In every error status, such the message as shown below alternately appear over and over.
Example (in case of the error number E01):
E01
UNIT IN
SAFEGUARD MODE
E01
REMOVE AND
REATTACH BATTERY
E. VF/LCD Symptom Mode when observed Resulting mode
E07 Short circuit of capstan MDA Power ON Power OFF
E06 CAPSTAN FG input absent EDIT Power OFF
E04 DRUM FF input absent DRUM rotation Power OFF
E03 SUPPLY REEL FG input absent REC, PLAY, SEARCH, FF
E02
Mode control motor rotates for more than 10
UNLOADING Power OFF
UNLOADING
[Power OFF
sec without shift to next mode.
E01
Mode control motor rotates for more than 10
LOADING Power OFF
sec without shift to next mode.
E00 Overtime the programming transaction REC, PLAY Power OFF
1.8 DEMONSTRATION MODE
This model has the DEMONSTRATION mode.
1) How to set the DEMONSTRATION mode.
The camera can be entered into the DEMONSTRATION mode by setting on the DISPLAY screen appearing in the viewfinder.
When entering the camera into the DEMONSTRA TION
mode, pay heed to the following matters.
1. Set the POWER switch to turn on
the "M".
Press the MENU WHEEL once. The
first page of the DISPLAY appears
on the LCD monitor (or in the
MENU Wheel
M
A
F
F
O
Y
A
L
P
Recording Start/Stop Button
viewfinder).
No cassette is set in the camcorder or a cassette is set
in the camcorder but it is protected from recording.
Note 1)
The indications of the DISPLAY page very
depending on the setting.
2) How to cancel the DEMONSTRATION mode.
To cancel the DEMONSTRATION mode, turn the
POWER switch off (“POWER OFF”).
2. Turn the MENU WHEEL in the
direction of the arrow to set the
cursor at “NEXT”.
Press the MENU WHEEL once.
The second page of the DISPLAY
appears on the LCD monitor (or in
the viewfinder).
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See to
next page
1-14
Fig. 1-8-1
Display 1
Display 2
Page 17
1. TITLE CALL and FUTURE
2. NIGHT ALIVE OFF
(For MEMORY MODEL ONLY)
3. NIGHT ALIVE ON
4. FOG
5. ND EFFECT
6. FADERWIPE (BLACK)
7. MOSAIC
8. SHUTTER
9. SLIDE
10. DOOR
11. CORNER
12. WINDOW
13. NEGA/POSI
14. STRETCH
15. MOSAIC
16. SEPIA
17. B/W
33. PIN UP SNAPSHOP
32. WIDE ANGLE
31. 28 ~ 30
(For DSC MODEL ONLY)
30. D.S.C. 9 FRAME
29. D.S.C. 4 FLAME
28. D.S.C. INDEX
27. S-VHS
(For S-VHS MODEL ONLY)
26. VHS
25. P. STABILIZER OFF
24. P. STABILIZER OFF
23. P. STABILIZER ON
22. P. STABILIZER OFF
21. WIDE ON
20. VIDEO ECHO
(For MEMORY MODEL ONLY)
19. CLASSIC
18. STROBE
Refer to Fig. 1-8-2.
While the DEMONSTRATION
mode is activated, a word of
DEMONSTRATION is
appearing on the screen
scrolling from right to left.
DENO MODE
OFF
ON
EXIT
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ENACMH
Note 2)
As the “DEMO MODE” is executed, the
camcoder enters the DEMONSTRATION mode
after the title screen of “TITLE CALL” and
“FUTURE” appear in this order.
<Flow chart>
3. Turn the MENU WHEEL in the
direction of the arrow to set the
cursor at “DEMO MODE”. Then,
press the MENU WHEEL once.
The third page of the DEMO
MODE appears on the LCD
monitor (or in the viewfinder).
Fig. 1-8-2
4. Turn the MENU WHEEL in the direction of the arrow to set the cursor at
“ON”. Then, press the MENU WHEEL
once.
The fourth page of the DISPLAY
appears on the LCD monitor (or in the
viewfinder).
(“DEMO MODE” is switched “ON” from
“OFF” status.)
5. Press the MENU WHEEL once.
The camcorder automatically
enters the DEMONSTRATION
mode and it repeats demonstration operation.
While the camcorder is performing demonstration, all operations
except turning on/off the POWER
switch are ineffectual.
Display 4Display 3
1-15
Page 18
1.9 SERVICE NOTE
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
1
2
3
5
4
6
7
(
8
,
9
)
Fig. C6 Fig. C7Fig. C5Fig. C4Fig. C3Fig. C1 Fig. C2
I
0
-
III
IV
V VII
VI
II
IV
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing
Screw tightening torque
→
→
→
→
→
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing
Screw tightening torque
→
→
→
→
→
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing
Screw tightening torque
→
→
→
→
→
Symbol No.
Removing order of screw
Place to stick screw
Reference drawing
Screw tightening torque
→
→
→
→
→
< NOTE >
• Pay careful attention to tightening torque for each screw.
I : 0.196 ± 0.019N·m II : 0.098 ± 0.009N·m III : 0.069 ± 0.009N·m
IV : 0.118 ± 0.019N·m V : 0.127 ± 0.012N·m VI : 0.069 ± 0.010N·m
VII : 0.186 ± 0.019N·m
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
Fig. C13
Fig. C12Fig. C10Fig. C8 Fig. C9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
1234
5
6
Fig. D6Fig. D5
Fig. D2Fig. D1
Fig. D3
Fig. D4
II
1 2 3
Fig. 1-5-1
DECK ASS'Y
OP B LOCK ASS'Y
MAIN ASS'Y
Table 1-9-1
1-16
Page 19
SECTION 2
MECHANISM ADJUSTMENT
2.1 SERVICE CAUTIONS
2.1.1 Precautions
1. Before disassembling/re-assembling the set as well as
soldering parts, make sure to disconnect the power
cable.
2. When disconnecting/connecting connectors, pay enough
attention to wiring not to damage it.
3. When installing parts, be careful not to do with other parts
as well as not to damage others. (Pay the most careful
attention to the upper drum assy and tape transport
mechanism.)
2.1.2 How to read the disassembly and assembly
(For Mechanism Parts)
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse
order. These numbers are also used as the identification (location) No. of parts Figures.
(2) Part to be removed or installed.
(3) Location of part.
T = Top
B = Bottom
(4) Fig. No. showing Procedure or Part Location.
M = Mechanism
(5) Identification of part to be removed, unhooked, un-
locked, released, unplugged, unclamped or unsoldered.
P = Spring
W = Washer
S = Screw
* = Unhook, unlock, release, unplug or unsolder.
2.1.3 Required adjustment tools
Alignment tape
MHP-C
Jig connector cable
YTU93106A
Cassette torque meter
PUJ50431-2
Table 2-1-1
Alignment tape
MHP-LC
Extension connector
YTU94145B-30
Roller Driver
PTU94002-2
(6) Adjustment information for installation.
(+) = Refer to Exploded Views for Lubrication information.
(For Mechanism Parts)
STEP/LOC.
No.
PART
Fig.
No.
REMOVAL INSTALLATION
*UNHOOK/UNLOCK ADJUSTMENT
/RELEASE/UNPLUG CONDITION
/UNSOLDER NOTE
1 ROLLER BASE ASSEMBLY T M1 (S1) –
2 TENSION ARM ASSEMBLY T M1 (P1), (W1a) –
3 REEL DISC (SUP) T M1 (W1a), (W1b) _
4 SLANT ARM ASSEMBLY T M1 (W1a) –
5 CANCEL LEVER ASSEMBLY T M2 (W2) _
6 EJECT LEVER ASSEMBLY T M2 (W2) –
7 CASSETTE GUIDE (L) ASSEMBLY T M2 (S2) –
5
(1) (2) (3) (4) (5) (6)
5
5
5
5
5
2-1
Page 20
2.2 DISASSEMBLY/ASSEMBLY OF MECHANISM PARTS
This procedure starts with the condition that the cabinet parts and deck parts. Also, all the following procedures for adjustment
and parts replacement should be performed in STOP mode. When reassembling, perform the step(s) in the reverse order.
REMOVAL INSTALLATION
*UNHOOK/UNLOCK ADJUSTMENT
/RELEASE/UNPLUG CONDITION
/UNSOLDER NOTE
STEP/LOC.
No.
PART
Fig.
No.
1 ROLLER BASE ASSEMBLY T M1 (S1) –
2 TENSION ARM ASSEMBLY T M1 (P1), (W1a) –
3 REEL DISC (SUP) T M1 (W1a), (W1b) –
4 SLANT ARM ASSEMBLY T M1 (W1a) –
5 CANCEL LEVER ASSEMBLY T M2 (W2) –
6 EJECT LEVER ASSEMBLY T M2 (W2) –
7 CASSETTE GUIDE (L) ASSEMBLY T M2 (S2) –
8 SUPPLY CLUTCH ASSEMBLY T M2 (W2) –
9 WHEEL GEAR T M2 (W2) See, Adjustment procedure for
Section 1.3
0 ROTARY ENCODER B M3 4(S3a)
The function of this part varies according to the assembly (YMA0030A-E/
YMA0031A-E) which this part is incorporated in.
! TIMING BELT B M3 ––
@ CENTER PULLEY UNIT T/B M3 2(S3a) –
# CASSETTE GUIDE (R) ASSEMBLY T M3 (S3b), (P3) (Only use YMA0031A-E)
$ TU GEAR T M3 (W3a) –
% BRAKE SUB GEAR T M3 (W3a) –
^ P.R ARM ASSEMBLY T M3 (W3b) –
& TU GUIDE ARM ASSEMBLY T M3 (W3b) –
* LINK ARM ASSEMBLY T M4 (W4) –
( LED GUIDE T M4 (S4a) –
) A/C HEAD UNIT T M4 2(S4b) –
q SLANT POLE BASE ASSEMBLY T M5 (S5a) –
w CAP MOTOR ASSEMBLY T M5 3(S5a) –
e MOTOR BASE T M5 2(S5b), (S5c) –
r BRUSH B M6 (S6a) –
t DRUM FINAL T/B M6
2(S6b), 2(S6c) *CATCHER
–
y GUIDE RAIL T M6 8(S6d) –
u POLE BASE (SUP) T M6 ––
i POLE BASE (TU) T M6 ––
o COVER PLATE T M7 ––
p DRIVE LEVER ASSEMBLY T M7 ––
Q MOTOR BRACKET ASSEMBLY T M7 3(S7) –
W CONTROL CAM T M8 (W8a) See, Adjustment procedure for
Section 1.3
E LINK LEVER T M8 ––
R MIDDLE GEAR T M8 ––
T LOADING GEAR(T) ASSEMBLY T M8 (W8b) See, Adjustment procedure for
Section 1.3
Y LOADING GEAR(S) ASSEMBLY T M8 (W8b) –
U LOADING RING ASSEMBLY T M8 4(S8) See, Adjustment procedure for
Section 1.3
2-2
Table 2-2-1
Page 21
<TOP VIEW>
24
11
10
31
37
25
26
<BOTTOM VIEW>
1
29
28
27
4
36
2
5
9
3
34
Fig. 2-2-1 TOP VIEW
20
21
19
22
23
17
16
14
15
18
12
33326830357
13
Note:
When reinstalling the cassette housing to
the set, pay careful attention to the switch
not to damage it.
Fig. 2-2-2 BOTTOM VIEW
2-3
Page 22
(S1)
2
(P1)
(W1a)
(S3b)
(P3)
13
12
(S3a)
16
(W3b)
17
(W3a)
1
(W1a)
(W1a)
3
4
(W1b)
(S3a)
(S3a)
Fig. M1 Fig. M3
(W2)
(S4a)
6
(W3a)
14
(W3a)
15
11
10
(S3a)
(S3a)
19
5
(W2)
9
(S2)
(W2)
7
8
18
(W4)
(S4b)
Fig. M4Fig. M2
20
(S4b)
2-4
Page 23
35
33
34
36
32
37
(S8)
(S8)
(W8a)
(W8b)
(W8b)
22
(S5a)
(S5a)
21
(S5a)
31
(S7)
27
(S5b)
Catcher
28
(S6b)
Fig. M5
(S6d)
25
(S5c)
23
29
30
Fig. M7
(S6d)
(S6c)
(S6c)
Fig. M6
(S6d)
(S6d)
26
24
(S6a)
Fig. M8
2-5
Page 24
2.3 CHECKUP AND ADJUSTMENT OF MECHANISM PHASE Note:
Pay careful attention to the installing order and phase
of mechanism parts of the loading system.
Align the hole of the Loading gear
(T) assembly to that of the deck.
Align the two holes of the Loading
ring assembly to those of the deck.
Align the hole of the
link lever assembly to
the deck hole.
Align one of the three holes of
wheel gear to the deck hole.
lign this part to each
Triangle" mark.
Align each one link lever
assembly hole and deck
hole to the hole at the
control cam position.
Fig. 2-3-1 Top of main deck
Align this part to each
"Triangle" mark.
2-6
Fig. 2-3-2 Rotary encoder
Page 25
2.4 TAPE TRANSPORT ADJUSTMENT
CH-2
Causer by wrong height
of supply guide roller
Caused by wrong height
of take-up guide roller
Flatten waveform.
1 field
In most cases the deck section is in need electrical adjustment, it results from replacement of worm mechanical parts
or video heads. In the event of malfunction with electrical
circuits, troubleshouting with the aid of proper test instruments most be done first, and then commence necessary
repair, replacement and adjustment, etc.
2.4.1 Back tension
1. Set a cassette torque meter onto the deck and measure
the back tension in standard REC mode to confirm that
the back tension is 0.7x10
-3
–1.37x10-3N·m.
2. If not, replace the tension band.
When the value widely fluctuates in the measurement,
replace the supply reel disk.
3. With the cassette torque meter, confirm that the play
torque is 1.47x10
-3
–2.45x10-3N·m.
If necessary, replace the center pully unit.
Back tension
-3
0.7x10
(7-14gf·cm)
- 1.37x10-3 N•m
Play torque
1.47x10
-3
- 2.45x10-3 N·m
(15-25gf·cm)
8. When the FM waveform breaks in the level varying process, subtly adjust the height of guide rollers at every
breaking point so that the waveform varies as flat as possible.
Repeat the above steps 6. and 7. several times to confirm that the waveform is flat as a whole.
9. Playback the SP stairstep signal of alighment tape and
adjust the tracking control to maximize the FM waveform, confirm that FM waveform variation is always flat.
10. Record the signal and play it back in both of the SP and
EP modes, and confirm that the FM waveform is flat in
both modes.
Fig. 2-4-2 FM waveform-1
Fig. 2-4-1 Cassette torque meter
2.4.2 Tape pattern
1. Remove the Cover (JIG) shwon on Fig. 2-6-1 (Page 2-
10).
2. Connect the jig connector cable to CN25 on the MAIN
board as shwon on Fig. 2-6-1 (Page 2-10).
3. Observe signal at V. TP FM with external trigger from V. FF
on the jig connector cable.
4. Playback the SP stairstep signal of the alignment tape
and maximize the FM waveform by the tracking button.
5. Set the tracking control to the center position by simultaneously pressing the tracking (-) and (+) buttons and
maximize the FM waveform by the tracking button.
6. If the observed FM waveform is not flat, adjust the height
of the supply of take-up guide roller with the roller driver.
To prevent the tape from damage, turn the guide
Note:
rollers slowly.
Correct variation of waveform
Bad variation of waveform
Fig. 2-4-3 FM waveform-2
7. By operating the tracking button (both in + and – directions) in the manual tracking mode, vary the output level
of the FM waveform from maximum to minimum and vice
versa to confirm that the waveform varies nearly in a flat
shape.
2-7
Page 26
11. Through the above steps, confirm that there occur no
g
wrinkling and damage in the tape around the pinch roller
and TU guide pole whenever the deck is in operation of
Loading/Unloading, Search Rewind and at mode change
from Search Rewind to play mode. If wrinkling or damage in the tape occurs around the TU guide pole, adjust
the angle (slant) of the A/C head to the tape. So that the
tape normally runs along the lower flange of the guide
pole.
Pole base (SUP)
(Guide roller)
Pole base (TU)
(Guide roller)
TU guide
pole
2.4.3 A/CTL head height & azimuth
1. Connect the jig connector cable to CN25 on the MAIN
board.
2. Connect the channel-1 scope probe to the audio output
and connect the channel-2 scope probe to PB CTL.
3. Playback the alignment tape.
4. Set the tracking to its center range by pressing the (+)
and (–) tracking controls simultaneously.
5. Adjust screws A , B and C approximately 45 degrees
in the same direction to obtain maximum audio output
and CTL signal levels.
6. As a final fine adjustment, adjust screw B for minimum
signal level fluctuation and screw C for maximum output signal level.
Tension
pole
Fig. 2-4-4 Tape transport system
Pinch
roller
Screw A
A/C head
Fig. 2-4-5 A/C head
Screw C
Screw B
Audio
signal
Control
pulse
si
nal
2-8
Fig. 2-4-6 Audio and CTL signal
Page 27
2.4.4 Phase of control head (X value)
1. Connect the jig connector cable to CN25 on the MAIN
board.
2. Playback the SP stairstep signal of the alignment tape
and observe signal at V.TP FM with external trigger from
V.FF on the jig connector cable.
3. Operate the tracking button in the center and manual
tracking mode by pressing the tracking (+) and (–) buttons and confirm that the FM output level is maximum
at the center position as shown in Fig. 2-4-8.
4. If necessary, slightly loosen the setscrews D and E and
insert the Tweezers into the notch and guide hole to
move the A/C head fully in the direction of the capstan
to the extent.
5. Gradually move the A/C head toward the drum to find
the position where the FM output level maximum for the
first time (a' – b' in Fig. 2-4-8).
6. Fine adjust the phase of the A/C head and tighten the
screws D and E at the point a.
A/C head
Insert the
Tweezers
2.5 REMARKS
2.5.1 Cleaning
1. For cleaning of the upper drum (particularly video heads),
use fine-woven cotton cloth or Kimwipe with alcohol
soaks through. Do not move the cloth but turn the upper
drum counterclockwise.
Make sure not to move the cloth in the vertical
Note:
direction to the video head, since it may cause
damage of the video heads.
2. For cleaning of parts of the tape transport system except
the upper drum, use fine-woven cotton cloth or cotton
swab soaked alcohol.
3. After cleaning, confirm that the cleaned parts are completely dry before loading the deck with cassette tape.
2.5.2 Applying oil and grease
1. Periodical oiling and greasing are not required but should
be done to new parts when replacing. If oil and grease
on the other parts of the other party are old and dirty,
wipe them clean and apply new oil or grease.
2. For parts and points to apply oil and grease, refer to the
exploded view of the mechanism assembly (M3).
Table 2-5-1pecifies oil and grease to be used.
3. When oiling, clean the objective parts with alcohol first
and apply one or two drop(s) of oil. Too much oiling
causes rotary parts to slip because of oil leakage.
Screw D
Screw E
Fig. 2-4-7 Phase of control head
a
FM output
Direction of capstan
Adjusting
point
A/C head phase
b
Direction of drum
Fig. 2-4-8 Phase adjustment point of control head
Max
Classification Name Symbol in drawing
Grease KYODO-SH-P AA
Oil YTU94027 BB
Table 2-5-1 Specific oil and grease to be used
2.5.3 Checkup
After replacement of the supply reel disk and tension band,
make sure to inspect back tension according to the adjustment procedure of MECHANISM ADJUSTMENT section.
Zero
2-9
Page 28
2.6 JIG CONNECTOR CABLE CONNECTION
Remove the cover (JIG).
Jig connector cable
Extention connector
Fig. 2-6-1 Jig connector cable connection
CN25
Cover(JIG)
MAIN BOARD CN25 Jig BOARD
MON_B
CVF_B
MON_G
CVF_G
MON_R
CVF_R
VF_PRO
VPP_7.8
MON_HD
DISCHG_L
MCU_RST
V_TP_FM
V_OUT
V_OVL
AO_SIG_J
PB_CTL
AL_J3.2V
JIG_TX
EJECT_SW
GND
I_MTR
GND
GND
GND
TXD
V_FF
RXD
NC
NC
NC
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
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
MON_B
CVF_B
2
MON_G
CVF_G
3
MON_R
CVF_R
4
GND
I_MTR
5
GND
VF_PRO
6
GND
VPP_7.8
7
MON_HD
DISCHG_L
8
GND
MCU_RST
9
TXD
V_FF
10
RXD
V_TP_FM
11
V_OUT
V_OVL
12
AO_SIG_J
PB_CTL
13
AL_J3.2V
JIG_TX
14
EJECT_SW
NC
15
NC
NC
2-10
Fig. 2-6-2 Jig connector cable schematic diagram
Page 29
SECTION 3
Service Support
System software
RS232C
COM Port
PC CABLE
Personal Computer
MENU
ELECTRICAL ADJUSTMENT
3.1 ELECTRICAL ADJUSTMENT
3.1.1 PREPARATION
1. Precaution
This model does not contain adjustment controls (VR).
General deck system, camera system and monitor system
adjustment are not required. However, if MAIN board and
MONITOR board need replacement, please use original
2
E
PROM on to new board. Then adjustment are not required.
And if parts such as the following need replacement, special
computerized adjustment are required (Refer to sec. 3.1.1-
4). Please contact to JVC Service for detaile information.
• OP block
• EEP ROM (IC104 of MAIN board)
• MONITOR
In the event of malfunction with electrical circuits, troubleshooting with the aid of proper test instruments most be
done first, and then commence necessary repair, replacement and adjustment, etc.
1. In case of wiring to chip test points for measurement, use
IC clips, etc. to avoid any stress.
2. Since connectors are fragile, carefully handle them in
disconnecting and connecting.
3. Shortcircuit between operation un it and DECK chassis.
2. Required test equipment
1. Color TV monitor.
2. AC power adapter
3. Oscilloscope (dual-trace type, observable 100 MHz or
higher frequency)
* It is recommended to use one observable 300 MHz or
higher frequency.
4. Digital voltmeter
5. Frequency counter (with threshold level adjuster)
6. Personal computer
3. Required adjustment tools
For detsails of special jigs necessary for adjustment, refer to
page 1-2 and 1-3 of the Section 1.
4. Setup for E. VF section adjustment
1. B/W VF (For AXM230/SXM330)
Referring to “SEC. 1 DISASSEMBLY” and connect the E. VF
WIRE to CN12 of the MAIN board.
(LY20701)
Bottom case assy
Parts No.
LY20701
Adjustment ltem : 3.2
2. COLOR VF (For SXM930)
Referring to "SEC. 1 DISASSEMBLY" and connect the E. VF
FPC to CN11 of the MAIN board.
Note:
•
This adjustmentalls into a special adjustment that requires
a personal computer.
For details, refer to “3.1.1 Preparation”.
Serial No.
label
Screw
5. Connection for Service support system
Fig. 3-1-1 Connection for Service support system
3-1
Page 30
7 FUSE LOCATION FOR MAIN BOARD ASSEMBLY
60
61
41
IC1601
80
120
17
IC2001
IC2401
4
85
IC4251
1
85
14
38 20
IC4501
119
IC105
9
8
16
1
IC107
5
4
8
1
24
13
FOIL SIDE
14
IC7005
CN12
14
8
5
F6002
F6003
0 1 MAIN PWB
YB10310-01-01
5
4
8
1
IC7006
CN28
113
13
24
2536
IC5202
40
21
157
148
37
IC5201
48
112
2536
112
37
48
24
13
105156
104
2536
37
IC7001
48
1
12
IC4001
208
152
43
IC106
IC104
1
5
8
4
4
2
3
1
56
53
2942
28
IC3501
15
114
0 1 MAIN PWB
YB10310-01-01
CN16
32 2
25
36
IC4702
95
17
IC6001
32
33
F6001
Fig. 3-1-2 FUSE location for MAIN board assembly (FOIL SIDE)
COMPONENT SIDE
8
13
24
37
14
116
48
1
15
114
CN2
IC7002
48
64
49
CN25
9
12
1
16
30
CN11
1
16
1
20
IC7008
IC7009
85
14
110
146
CN13
114
IC3003
3
4
5
IC3001
1
73
72
19
37
36
1
5
3
4
IC3002
IC102
1
5
3
4
111
1
39
1
1
44
109
1
12
CN19
176
CN18
IC4002
45
CN22
114
1
38
IC4003
20
38
2
20 11
110
IC101
1
10
CN1CN5
CN3
18 1
CN7
1
11
17
IC4202
148
IC4201
4
85
1
22
133
132
89
88
CN15
1
CN4
16
3-2
Fig. 3-1-3 FUSE location for MAIN board assembly (COMPONENT SIDE)
Page 31
IC7501
F7501
CN7501
CN7503
28 1
21
14
85
CN7502
R7516
24
1
0 7 MONITOR PWB
YB20900-01-01
7 FUSE LOCATION FOR MONITOR BOARD ASSEMBLY
COMPONENT SIDE
3.2 MONITOR ADJUSTMENT
Notes:
Fig. 3-1-4 FUSE location for MAIN board assembly (COMPONENT SIDE)
Unless otherwise specified, all measurement points
and adjustment parts are located on MONITOR board.
COMPONENT SIDE (A)
F7501
IC7501
14
85
21
CN7503
R7516
V COM
0 7 MONITOR PWB
1
CN7502
24
YB20900-01-01
CN7501
28 1
3.2.1 V COM
Signal •Alignment tape
•Stairstep
Mode •PB
Equipment •LCD MONITOR
Measurement point •–
Adjusting part •R7516 (V COM)
Specification •Black level must correctly be
reproduced on the LCD MONITOR.
(There is a sharp contrast
between black and white parts.)
(1) Adjust R7516 to make sharp contrast between black and
white parts on the LCD MONITOR screen.
(2) Adjust R7516 so that black and white levels (patticularly
black level in the contour) is sharply reproduced on the
LCD MONITOR screen.
3-3
Page 32
3.3 ELECTRONIC VIEWFINDER (E. VF) ADJUSTMENT
Notes:
•
Unless otherwise specified, all measurement points and
adjustment parts are located on E. VF board.
•
After adjustment or replacement of the deflection yoke or
the centering magnet, fix it by the band as shown the figure
below.
TOP VIEW
CENTERING
CRT
MAGNET
STOPPER
Fig. 3-3-1 E. VF
After adjustment is completed, compare the picture on the
•
E. VF screen with the monitor TV.
1) Put the deflection yoke to the most inner side of CRT neck
first. Then fix the stopper temporary.
2) Adjust the tilt of picture on the E. VF screen by tilting the
deflection yoke.
3) Fix the stopper completely.
3.3.2 Centering
Subject • Alignment tape
• Stairstep
Mode • PB
Equipment • E. VF
Measurement point • E. VF screen
Adjusting part • Centering magnet (CRT assy)
Specification • The center of the E. VF screen
1) While observing the viewfinder screen, adjust the centering
magnet to locate the stairstep in the center of the viewfinder screen.
3.3.3 Vertical scanning
Subject • Camera picture
CENTERING
CRT
MAGNET
STOPPER
Fig. 3-3-2 E. VF
VR7003
CN7001
FOCUS
T7001
VR7002
BRIGHT
CN7002
60 E. VF PWB ASSY
VR7001
V. SIZE
Fig. 3-3-3 E. VF board
3.3.1 Tilt
Subject • Alignment tape
• Stairstep
Mode • PB
Equipment • E. VF
Measurement point • E. VF screen
Adjusting part • Deflection yoke
Specification • The picture is visible as
same as monitor TV.
F.B.T
Mode • EE
Equipment • E. VF
Measurement point • E. VF screen
Adjusting part • VR7001 (V. SIZE)
Specification • Normal picture amplitude
1) Observing the viewfinder screen, adjust VR7001 for
normal picture amplitude.
3.3.4 Brightness
Subject • –
Mode • EE
• Lens closed
Equipment • E. VF
Measurement point • E. VF screen
Adjusting part • VR7002 (BRIGHT)
Specification • The CRT raster is just barely
visible
1) Close the lens with the cap and adjust VR7002 so that
the raster of the CRT is just visible in the E. VF.
3.3.5 Focus
Subject • Camera picture
Mode • EE
Equipment • E. VF
Measurement point • E. VF screen
Adjusting part • VR7003 (FOCUS)
Specification • The center area is clear and
defined
1) While observing the viewfinder screen, adjust VR7003
so that the picture at the central area of the screen is
clear and defined.
3-4
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