JVC GR-SXM335U, Service Manual

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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 DISASSEMBLY/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
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 SCHEMATIC 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 ASSEMBLY <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
Section Title Page
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 METALLIC GRAY SILVER
DIGITAL 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
The following table lists the differing points between Models GR-AXM230U/UC, GR-SXM330U/UC and GR-SXM930U/UC in this series.