Main Board Assembly<03 - JVC HR-V506EL Service Manual

SECTION 1
SUMMARY
KEY TO ABBREVIATIONS . . . . . . . . . . . . . . . . 1-1
Important Safety Precautions
PROPOSAL FOR APPLYING SHORT
PROTECTION . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4
SERVICE NOTICE ON REPLACING EEPROM . .1-5
SERVICE INFORMATION FOR EEPROM
IC SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . 1-8
SECTION 2
CABINET & MAIN CHASSIS
SERVICE METHOD . . . . . . . . . . . . . . . . . . . . . 2-1
Electrical Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . 2-2
1. Cabinet & Main Frame Section . . . . . . . . . . . . . 2-2
2. Packing & Accessory Section
SECTION 3
ELECTRICAL
ELECTRICAL ADJUSTMENT POINTS
ARRANGEMENT . . . . . . . . . . . . . . . . . . . . . . . .3-1
ELECTRICAL ADJUSTMENT PROCEDURES . . 3-2
1. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ELECTRICAL TROUBLESHOOTING GUIDE . . . 3-4
1. Power Circuit(SMPS) . . . . . . . . . . . . . . . . . . . . . 3-4
2. Servo Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
3. System & Front Panel Circuit . . . . . . . . . . . . . . .3-10
4. Y/C Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
5. Tuner/IF Circuit . . . . . . . . . . . . . . . . . . . . . . . . .3-16
6. Hi-Fi Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
The following table indicates main different points between models HR-V200EZ, HR-V205EK, HR-V500EZ, HR-V505EK and HR-V505EZ.
MODEL
HR-V200EZ
ITEM
BROADCASTING STANDARD PAL B/G,D/K
AUDIO
STEREO DECODER
VIDEO HEAD
TAPE SPEED
SHOWVIEW/VIDEOplus+
FRAME ADVANCE
SLOW(FORWARD)
DIGITAL SHUTTLE
HiFi AUDIO OUT(RCA)
AV2 CONNECTOR
POWER PLUG
Notes: Mark is same as left.
TABLE OF CONTENTS
. . . . . . . . . . . . . . 2-3
HR-V205EK
PAL I
MONO
NOT USED NOT USED
2
SP
NOT USED VIDEOplus+
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
CEE BS
BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . .3-21
1. Power Block Diagram . . . . . . . . . . . . . . . . . . . .3-21
2. Tuner/IF, NICAM & A2 Block Diagram . . . . . . . .3-23
3. VPS Block Diagram . . . . . . . . . . . . . . . . . . . . . .3-24
4. Y/C Block Diagram . . . . . . . . . . . . . . . . . . . . . .3-25
5. Hi-Fi Block Diagram . . . . . . . . . . . . . . . . . . . . .3-26
6. System Block Diagram . . . . . . . . . . . . . . . . . . .3-27
CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . .3-29
1. Power Circuit Diagram . . . . . . . . . . . . . . . . . . . .3-29
2. Tuner, NICAM/A2 Circuit Diagram . . . . . . . . . . .3-31
3. A/V, SECAM, VPS Circuit Diagram . . . . . . . . . .3-33
4. System Circuit Diagram . . . . . . . . . . . . . . . . . . .3-35
• WAVEFORM & VOLTAGE SHEET. . . . . . . . . . . .3-37
5. Hi-Fi, SCART Circuit Diagram . . . . . . . . . . . . . .3-39
• CIRCUIT VOLTAGE CHART . . . . . . . . . . . . . . . .3-41
PRINTED CIRCUIT BOARD DIAGRAMS . . . . .3-45
1. MAIN P.C.Board . . . . . . . . . . . . . . . . . . . . . . . .3-45
SECTION 4
MECHANISM
NOTE) The table of contents for this section is edited
NOTE) separately.
SECTION 5
REPLACEMENT PARTS LIST
5.1 EXPLODED VIEW
5.1.1 PACKING AND ACCESSORY ASSEMBLY <M1>
5.1.2 FINAL ASSEMBLY <M2>
5.1.3 MECHANISM ASSEMBLY <M4>
5.2 REPLACEMENT PARTS LIST
PACKING AND ACCESSORY PARTS LIST<M1> 5-4
FINAL PARTS LIST<M2>
MECHANISM PARTS LIST<M4>
MAIN BOARD ASSEMBLY<03>
HR-V500EZ HR-V505EK
PAL B/G,D/K PAL I
HiFi
NICAM, 2 Carrier NICAM
4
SP/LP
NOT USED VIDEOplus+
USED
USED
USED
USED
USED
CEE BS
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HR-V505EZ
PAL B/G,D/K
NICAM,2 Carrier
SHOWVIEW
NOT USED
CEE
5-1
5-1
5-2
5-3
5-4
.
5-4
5-4
5-5