JVC GR-FXM270A - Section 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 .................................................... 1-4
1.4 DISASSEMBLY/ASSEMBLY OF CAMERA SECTION
AND DECK SECTION ........................................................ 1-10
1.4.1 Flowchart of disassembly ........................................... 1-10
1.4.2 Disassembly method .................................................. 1-10
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
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 Horizontal sync. ............................................................ 3-4
3.3.2 PLL adjustment ............................................................ 3-4
3.3.3 Centering ...................................................................... 3-4
3.3.4 Focus ............................................................................ 3-5
3.3.5 Brightness .................................................................... 3-5
3.4 SERVICE NOTE ................................................................... 3-6
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 DIAGRAMS .................................... 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 DIAGRAMS ...................... 4-15
4.8 VIDEO OUT SCHEMATIC DIAGRAM ................................ 4-17
4.9 REGULATOR SCHEMATIC DIAGRAM .............................. 4-19
4.10 LCD CTL SCHEMATIC DIAGRAM ..................................... 4-21
4.11 JACK AND CCD SCHEMATIC DIAGRAMS ....................... 4-23
4.12 SPEAKER AND MONITOR
SCHEMATIC DIAGRAMS .................................................. 4-25
4.13 TOP OPE UNIT, ZOOM UNIT, REAR UNIT
AND SENSOR SCHEMATIC DIAGRAMS ........................... 4-27
4.14 ELECTRONIC VIEWFINDER SCHEMATIC DIAGRAM ......... 4-29
4.15 MAIN CIRCUIT BOARD ..................................................... 4-31
4.16 CCD CIRCUIT BOARD ...................................................... 4-37
4.17 MONITOR CIRCUIT BOARD ............................................. 4-39
4.18 ELECTRONIC VIEWFINDER CIRCUIT BOARD ............... 4-41
4.19 POWER SYSTEM BLOCK DIAGRAM ............................... 4-43
4.20 CAMERA BLOCK DIAGRAM ............................................. 4-45
4.21 Y/C BLOCK DIAGRAM....................................................... 4-49
4.22 MONITOR BLOCK DIAGRAM ............................................ 4-51
4.23 CPU/MDA BLOCK DIAGRAM ............................................ 4-53
4.24 WAVEFORMS .................................................................... 4-55
4.25 VOLTAGE CHARTS ........................................................... 4-56
5. PARTS LIST
5.1 PACKING ASSEMBLY <M1>................................................ 5-1
5.2 FINAL ASSEMBLY <M2> ..................................................... 5-3
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
CCD BOARD ASSEMBLY <02> ......................................... 5-17
MONITOR BOARD ASSEMBLY <07> ................................ 5-17
E. VF BOARD ASSEMBLY <50>........................................ 5-18
Section Title Page
GR-FXM37EG GR-SXM607EG GR-SXM607EK
VIDEO LIGHT NOT USED USED
IR RECEIVER NOT USED USED
LCD MONITOR 2.5” 3”
BODY COLOR Mold Black Silver
IMAGE SENSOR 1/4” 320K 1/4” 470K
HORIZONTAL RESOLUTION 300LINES 400LINES
AC CORD CEE TYPE CEE TYPE UK TYPE
BATTERY PACK BN-BV11U BN-20BU
RCU UNIT NOT USED PROVIDE
SNAP SHOT NOT USED USED (FULL ONLY)
NIGHT SCOPE NOT USED USED
5 SEC REC SW USED NOT USED
S-VHS ON/OFF NOT USED USED
VIDEO OUT SELECT PAL/SECAM NOT USED USED NOT USED
The following table lists the differing points between Models GR-FXM37EG and GR-SXM607EG/EK in this series.