JVC HR-J580EK Service Manual

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SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-J580EK/EU,J581EU,J587EU,
J588EU,J589EU
Regarding service information other than these sections, refer to the HR-J680EU/EK service manual (No. 82847).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
GENERAL
Power requirement
: AC 220 V – 240 V ` , 50 Hz/60 Hz
Power consumption
Power on
: 16 W
Power off
: 4.0 W
Temperature
Operating
: 5°C to 40°C
Storage
: –20°C to 60°C
Operating position
: Horizontal only
Dimensions (WxHxD)
[HR-J680/681/682EU] : 400 mm x 94 mm x 278 mm
[HR-J587/588/589EU] : 360 mm x 94 mm x 278 mm
Weight
[HR-J680/681/682EU] : 3.3 kg
[HR-J587/588/589EU] : 3.2 kg
Format
: VHS PAL standard
Maximum recording time
(SP)
: 240 min. with E-240 video cassette
(LP)
: 480 min. with E-240 video cassette
VIDEO/AUDIO
Signal system
: PAL-type colour signal and CCIR
monochrome signal, 625 lines 50 fields
Recording system
: DA4 (Double Azimuth) head helical scan system
Signal-to-noise ratio
: 45 dB
Horizontal resolution
: 250 lines
Frequency range
: 70 Hz to 10,000 Hz (Normal audio)
20 Hz to 20,000 Hz (Hi-Fi audio)
Input/Output
: 21-pin SCART connectors :
IN/OUT x 1, IN/DECODER x 1
RCA connectors: AUDIO OUT x 1
PR
(The specifications shown pertain specifically to the model HR-J587EU/588EU/589EU,J680EU/681EU/682EU)
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.
VCR
SAT
SAT
REVIEW
TUNER/TIMER
TV channel storage capacity : 99 positions (+AUX position)
Tuning system
: Frequency synthesized tuner
Channel coverage
: VHF 47MHz – 89MHz/
104MHz – 300MHz/
302MHz – 470MHz
UHF 470MHz – 862MHz
Aerial output
: UHF channels 22 – 69 (Adjustable)
Memory backup time
: Approx. 10 min.
ACCESSORIES
Provided accessories
: RF cable,
Infrared remote control unit,
"R6" battery x 2
Optional accessories
: Satellite Controller RM-SD1
Specifications shown are for SP mode unless otherwise specified.
E.& O.E. Design and specifications subject to change without notice.
No. 82849
March 2001

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Summary of Contents for JVC HR-J580EK

  • Page 1 SERVICE MANUAL VIDEO CASSETTE RECORDER HR-J580EK/EU,J581EU,J587EU, J588EU,J589EU REVIEW Regarding service information other than these sections, refer to the HR-J680EU/EK service manual (No. 82847). Also, be sure to note important safety precautions provided in the service manual. SPECIFICATIONS (The specifications shown pertain specifically to the model HR-J587EU/588EU/589EU,J680EU/681EU/682EU)
  • Page 2 5.1 FINAL ASSEMBLY <M2> ..................................5-1 5.2 ELECTRICAL PART LIST ..................................5-3 MAIN BOARD ASSEMBLY <03> ................................5-3 MINI FRONT BOARD ASSEMBLY <28> ..............................5-10 [HR-J580EK] The following tables indicate main different points between models HR-J680EK and HR-J580EK. MODEL HR-J680EK HR-J580EK ITEM...
  • Page 3 [HR-J580EU/J581EU/J587EU/J588EU/J589EU] The following tables indicate main different points between models HR-J680EU and HR-J580EU,HR-J581EU,HR-587EU,HR-J588EU,HR-J589EU. MODEL HR-J680EU HR-J580EU HR-J581EU HR-J587EU HR-J588EU HR-J589EU ITEM SAT_CTL USED NOT USED NOT USED USED PLUG &PLAY AUTO SET.AUTO CLOK AUTO TUNE AUTO TUNE AUTO SET.AUTO CLOK VCR PLUS+ VIDEO PLUS+ DELUXE VIDEO PLUS...
  • Page 4 VICTOR COMPANY OF JAPAN, LIMITED S40894 VIDEO DIVISION Printed in Japan...
  • Page 5 SECTION 4 CHARTS AND DIAGRAM...
  • Page 6 ON SCREEN SCHEMATIC DIAGRAM [HR-J580EK/EU , HR-J581EU] C230 OPEN L207 R225 SHORT C229 OPEN L201 C201 C202 OPEN OPEN SW5V TO SW.REG TO VIDEO/AUDIO V TO OSD TO TERMINAL V FROM OSD P.MUTE[L] SYNC DET[H] D201 OSD CS TO SYSCON D202 S.CLK...
  • Page 7 The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. C222 R216 R224 C230 B216 OPEN OPEN R213 2.2k C217 Q201 2SC4081/QRS/-X 2PC4081/R/-X C218...
  • Page 9 Replace only with specified part numbers. < > FINAL ASSEMBLY BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and per- formance. We recommend that genuine JVC parts be used. (Incl <03>) 505F 505D 505E 505B...
  • Page 10 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 11 ELECTRICAL PARTS LIST REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 12 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 13 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 14 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 15 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 16 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 17 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 18 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 19 5-11...
  • Page 20 SERVICE MANUAL VIDEO CASSETTE RECORDER TV/VCR AUDIO – –:– – VPS/PDC DAILY/QTDN. WEEKLY/HEBDO 0000 START STOP DATE DEBUT EXPRESS PROG 30 SEC 24H EXPRESS REVIEW PUSH / TURN SPECIFICATIONS (The specifications shown pertain specifically to the model HR-J785EK) g e n e r a l t u n e r / t i m e r Ó...
  • Page 21: Table Of Contents

    TABLE OF CONTENTS Section Title Page Section Title Page Important Safety Precautions 2.2.24 Rotor assembly ............2-14 2.2.25 Upper drum assembly ..........2-15 INSTRUCTIONS 2.3 Compatibility adjustment ............ 2-16 2.3.1 FM waveform linearity ........... 2-16 1. DISASSEMBLY 2.3.2 Height and tilt of the A/C head ........2-17 1.1 Disassembly flow chart ............
  • Page 22: Important Safety Precautions

    Important Safety 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.
  • Page 23 • 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.
  • Page 25: Disassembly

    SECTION 1 DISASSEMBLY 1.3 Disassembly/assembly method 1.1 Disassembly flow chart Step/ Fig. This flowchart lists the disassembling steps for the cabinet Part Name Point Note Loc No. parts and P.C. boards in order to gain access to item(s) to [1] Top cover, D1 4(S1a), (S1b) - - - - - - - - - - - - - - - - - be serviced.
  • Page 26 Procedures for Lowering the Cassette holder assembly [2] Front panel assembly As the mechanism of this unit is integrated with the Housing assembly, the holder must be lowered and the two screws un- screwed when removing the Mechanism assembly. (L2a) CN7001 Fig.
  • Page 27 Note: WR4a A/C head base When installing the Mechanism assembly, secure the screws (S4a to S4b) in the order of a, b. WR4a <Note 2c> (S4c) (S4a) (S4d) <Note 4a> (S4b) <Note 4a> (L6a) Mechanism <Note 6a> assembly Q3002 End sensor (L6b) <Note 4a>...
  • Page 28: Service Position

    1.4 Service position 1.5 Mechanism service mode This unit has been designed so that the Mechanism and This model has a unique function to enter the mechanism Main board assemblies can be removed together from the into every operation mode without loading of any cassette chassis assembly.
  • Page 29: Emergency Display Function

    Notes: 1.7 Emergency display function • The EMG detail information <1><2> show the information This unit has a function for storing the history of the past two on the latest EMG. emergencies (EMG) and displaying them on each FDP (or It becomes “...
  • Page 30: Emg Content Description

    1.7.3 EMG content description Note: EMG contents “E08/E09” are for the model with Dynamic Drum (DD). CONTENT CAUSE E01: Loading EMG 1. The mechanism is locked in the middle of mode transition. When the mechanism mode cannot be changed to an- 2.
  • Page 31: Emg Detail Information <1

    1.7.4 EMG detail information <1> * 2 : Mechanism operation mode [Common table of MN* and M3*] The status (electrical operation mode) of the VCR and the sta- tus (mechanism operation mode/sensor information) of the Display Mechanism operation mode mechanism in the latest EMG can be confirmed based on the MN* M3* figure in EMG detail information <1>...
  • Page 32: Emg Detail Information <2

    3– : Mechanism sensor information Note: [Common table of MN*, HD* and M3*] • EMG detail information <2> is the reference information stored using the remaining tape detection function of the Mechanism sensor information Display MN* / HD* cassette tape. As a result, it may not identify cassette cor- REC safety Start S-VHS SW...
  • Page 33: Mechanism Adjustment

    SECTION 2 MECHANISM ADJUSTMENT 2.1 Before starting repair and adjustment 2.1.1 Precautions (1) Unplug the power cord plug of the VCR before using your Loading motor soldering iron. (2) Take care not to cause any damage to the conductor wires when plugging and unplugging the connectors. (3) Do not randomly handle the parts without identifying where the trouble is.
  • Page 34: Jigs And Tools Required For Adjustment

    2. In case of mechanical failure 2.1.4 Jigs and tools required for adjustment If you cannot remove the cassette tape which is loaded be- Roller driver A/C head positioning tool Torque gauge cause of any mechanical failure, manually remove it by tak- PTU94002 PTU94010 PUJ48075-2...
  • Page 35: Maintenance And Inspection

    2.1.5 Maintenance and inspection 1. Location of major mechanical parts In this chapter, the two mechanism speeds are described by comparing the speeds of the standard type and the high-speed FF/REW type. It is possible to distinguish between these two types of mechanism by the diameters of their capstan pulleys. The capstan pulley diameter for the standard type is approx.
  • Page 36 4. Suggested servicing schedule for main components The following table indicates the suggested period for such Guide rail Roller cam assembly service measures as cleaning,lubrication and replacement. In practice, the indicated periods will vary widely according to environmental and usage conditions.However, the indi- cated components should be inspected when a set is brought for service and the maintenance work performed if neces- sary.
  • Page 37 Symbols and numbers R4 R1 T9 T12 T11 B15 B12 B14 B13 B17 B21 B7 B8 B5 B4 B11 T14 T15 T13 T22 T24 T18 B19 Removal parts (Reference items) Replacement parts 2.2.3 Guide rail 2.2.3 Roller cam assembly 2.2.3 Cassette housing bracket 2.2.3 Opener guide 2.2.3 Door opener 2.2.3 Relay gear...
  • Page 38: Replacement Of Major Parts

    2.2 Replacement of major parts 2.2.3 Cassette holder assembly 1. How to remove 2.2.1 Before starting disassembling (Phase matching (1) Remove the guide rail and roller cam assembly. (See between mechanical parts) Fig.2-2-3a.) The mechanism of this unit is closely linked with the rotary (3 lugs on the guide rail and one lug on the roller cam encoder and system controller circuits.
  • Page 39 (5) While holding the left side of the cassette holder, lift the 2. How to install (Phase matching) cassette holder assembly so that the three legs on the (1) Insert the section (A) of the drive arm into the section (B) left side are all released.
  • Page 40: Pinch Roller Arm Assembly

    2.2.6 A/C head Notches Guide hole Notch 1. How to remove Relay gear (1) Remove the two screws (A) and remove the A/C head together with the head base. (2) When replacing only the A/C head, remove the three screws (B) while controlling the compression spring. Head base Screws(A) Drive gear...
  • Page 41: Capstan Motor

    2. How to install (Centering the mounting position) Loading motor board assembly When the capstan motor has once been removed and then reinstalled out of the initial correct position in the rotational Loading motor direction, the capstan motor current may be unstable during Lugs operation in high or low temperatures.
  • Page 42: Rotary Encoder

    2.2.10 Rotary encoder 2.2.12 Change lever assembly, direct gear, clutch gear and coupling gear 1. How to remove (1) Remove the screw (A) and remove the rotary encoder 1. How to remove (1) Release the two lugs of the rotary encoder guide in the by pulling it up.
  • Page 43: Link Lever

    2.2.13 Link lever 2.2.14 Cassette gear, control cam and worm gear 1. How to remove 1. How to remove (1) Remove the two slit washers. (1) Remove the control cam by lifting it. (2) Remove the link lever by lifting it from the shaft retained (2) Open the two lugs of the cassette gear outward and pull by the slit washers.
  • Page 44: Loading Arm Gear (Supply Or Take-Up Side) And Loading Arm Gear Shaft

    (3) Install the control plate so that the section A of the load- (3) Turn the loading arm gear (take-up side) clockwise so ing arm gear shaft fits into the hole (A) of the control plate, that the notch of the loading arm gear (take-up side) is the section B of the control plate guide into the hole (B), in alignment with the projection of the loading arm gear and the control plate comes under the section C of the...
  • Page 45: Take-Up Lever, Take-Up Head And Control Plate Guide

    2.2.17 Take-up lever, take-up head and control plate guide (1) Remove the spring of the take-up lever from the main deck. Spring (2) Remove the lug (A) of the take-up lever from the main Sub brake assembly deck and pull out the take-up lever and the take-up head Lug(A) (take-up side) together.
  • Page 46: Tension Brake Assembly, Reel Disk (Supply Side) And Tension Arm Assembly

    2.2.21 Tension brake assembly, reel disk (supply side) 2.2.23 Stator assembly and tension arm assembly (1) Remove the flat cable. 1. How to remove (2) Remove the two screws (A), (B) and remove the lug wire. (1) Remove the three lugs of the tension brake assembly (3) Remove the stator assembly by lifting in the arrow-indi- from the main deck and pull them off.
  • Page 47: Upper Drum Assembly

    2.2.25 Upper drum assembly Notes: • To replace the upper drum assembly only may not be possible with some models. For upper drum assem- bly replacement, refer to the parts list. (When the parts number of the upper drum assembly is not listed on Lower drum assembly the parts list, then this cannot be replaced.) •...
  • Page 48: Compatibility Adjustment

    2.3 Compatibility adjustment pole base assembly (supply or take-up side). (7) Unload the cassette tape once, play back the alignment Notes: tape (A1) again and confirm the V.PB FM waveform. • Although compatibility adjustment is very important, (8) After adjustment, confirm that the tape wrinkling does not it is not necessary to perform this as part of the nor- occur at the roller upper or lower limits.
  • Page 49: Height And Tilt Of The A/C Head

    (4) Adjust the AUDIO OUT waveform and Control pulse waveform by turning the screws (1), (2) and (3) little by little until both waveforms reach maximum. The screw (1) and (3) are for adjustment of tilt and the screw (2) for azi- muth.
  • Page 50: Standard Tracking Preset

    [Perform adjustment steps (7) to (10) only for 2 Head (4) Set the VCR to the Auto adjust mode by transmitting the models equipped with LP mode.] code (F) twice from the Jig RCU. When the VCR enters the stop mode, the adjustment is completed. (7) Then play back the alignment tape (A2).
  • Page 51 Mechanism Timing Chart EJECT CASS- Mechanism mode CASS-INS FF/REW STOP SLOW/STILL PLAY Control plate mark HIGH C CH HIGH Rotary encoder B CH HIGH A CH Control cam angle 264. 318. 412. Rotary encoder 114. 150. 167. 178. 207. 218. 240.
  • Page 52: Electrical Adjustment

    SECTION 3 ELECTRICAL ADJUSTMENT 3.1.4 Switch settings and standard precautions Precaution The SW settings of the VCR and the standard precautions The following adjustment procedures are not only necessary for the electrical adjustments are as follows. after replacement of consumable mechanical parts or board assemblies, but are also provided as references to be re- •...
  • Page 53: Servo Circuit

    Servo circuit Note: • For FWD slow (+1/6x) playback, transmit the code “08” 3.2.1 Switching point from the Jig RCU to enter the slow playback mode, and Signal (A1) • Stairstep signal transmit the code “D0” for REV slow (–1/6x) mode. (A2) •...
  • Page 54: Charts And Diagrams

    SECTION 4 CHARTS AND DIAGRAMS 4) Indication on schematic diagram NOTES OF SCHEMATIC DIAGRAM Voltage Indications for REC and PB mode on the sche- matic diagram are as shown below. Safety precautions The Components identified by the symbol critical for safety. For continued safety, replace safety critical components only with manufacturer's recom- REC mode mended parts.
  • Page 55: Circuit Board Notes

    6. Signal path Symbols CIRCUIT BOARD NOTES The arrows indicate the signal path as follows. 1. Foil and Component sides 1) Foil side (B side) : Playback signal path Parts on the foil side seen from foil face (pattern face) are indicated.
  • Page 56: Board Interconnections

    BOARD INTERCONNECTIONS REAR OUT REAR IN J7103 J7104 LITHIUM BATTERY (Page 4-10) AC INPUT J7101 J7102 RF OUT RF IN AV1 IN/OUT AV2 IN/DECODER TUNER TU6001 MATSUSHITA ALPS OPEN BB(AL5V) BB(AL5V) SAT CTL AUDIO IN AUDIO IN (Page 4-18) MOD SDA MOD SDA OPEN CN7104...
  • Page 57: Main(Video/Audio) Schematic Diagram

    MAIN ( VIDEO/AUDIO ) SCHEMATIC DIAGRAM The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. MAIN ( VIDEO/AUDIO ) R2001 R2003 R2206 TO TERMINAL...
  • Page 58: Main(On Screen) Schematic Diagram

    MAIN ( ON SCREEN ) SCHEMATIC DIAGRAM Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. R216 R224 C230 C222 OPEN R213 L207...
  • Page 59: Main(Syscon) Schematic Diagram

    MAIN ( SYSCON ) SCHEMATIC DIAGRAM The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. OPEN FW7006 LT BACK UP MAIN[SYSCON] LITHIUM BT3001...
  • Page 60: Main(Sw.reg) Schematic Diagram

    MAIN ( SW.REG ) SCHEMATIC DIAGRAM The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. Note : When replacing the parts , refer to the Parts List. TO SYSCON MAIN[SW.REG] D5201 R5302 R5303 AU01Z B5301...
  • Page 61: Main(Tuner) Schematic Diagram

    MAIN ( TUNER ) SCHEMATIC DIAGRAM Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. MAIN ( TUNER ) DIFFERENCE TABLE : Used ANT IN ANT OUT...
  • Page 62: Main(Front) And Adv.jog Schematic Diagrams

    MAIN ( FRONT ) AND ADJ.JOG SCHEMATIC DIAGRAMS Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. OPEN ( FRONT ) MAIN CN7002 MINI FR ONT...
  • Page 63: Main(Terminal), Sat Ctl And R.pause Schematic Diagrams

    MAIN ( TERMINAL ), SAT CTL AND R.PAUSE SCHEMATIC DIAGRAMS Note : The Parts Number , value and rated voltage etc. in the Schematic Diagram are for references only. When replacing the parts , refer to the Parts List. MAIN[TERMINAL] Q7101 R7112 R7101...
  • Page 64: Remote Controller Schematic Diagram

    REMOTE CONTROLLER SCHEMATIC DIAGRAM ( LP20878-002 ) PROG ? ( PROG CHECK ) ENTER/ENTREE 30 SEC DATE - - : - - ( REC ) ( REW ) START/DEBUT STOP/FIN DATE START/DEBUT STOP/FIN MENU 0 / AUX 8 / DAILY/QTDN. KI/04 ( MUTE ) AUDIO/...
  • Page 65 COMPONENT PARTS LOCATION GUIDE MAIN REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION C2008 A D 13O C5208 L303 R3029 R5102 R7135 CAPACITOR CONNECTOR C2009 B C 12O C5210 L2001 A D 16N B C 10N R3030...
  • Page 66: Main, Sat Ctl And R.pause Circuit Boards

    4.10 MAIN , SAT CTL AND R.PAUSE CIRCUIT BOARDS 03 MAIN DANGEROUS VOLTAGE LPB10131-001C J7104 J7103 C7101 R2062 R2063 R7103 R7105 L7101 R7106 R7114 L7102 R7115 J7102 AV IN AV OUT J7101 R7117 C5003 AV2/DECODER F5001 CN5001 R7113 R7107 Q2061 R2064 FC5001 FC5002...
  • Page 67: Fdp Grid Assignment And Anode Connection

    4.11 FDP GRID ASSIGNMENT AND ANODE CONNECTION 4.12 WAVEFORMS < SYSCON > GRID ASSIGNMENT CN3003-2 CN3001-4 CN3001-5 TP4001 IC3001-1 IC3001-98 CAP_FG D.PG D.FG CTL. P CTL(+) C.SYNC DIGIT 2 DIGIT 3 DIGIT 4 DIGIT 1 REC/PB 2.2 Vp-p REC/PB 4.6 Vp-p REC/PB 4.5 Vp-p PB 2.4 Vp-p REC 3.6 Vp-p...
  • Page 68: Voltage Charts

    4.13 VOLTAGE CHARTS 4.14 CPU PIN FUNCTION <ADV.JOG> <SAT CTL> <R.PAUSE> [HR-J780EU] <MAIN> [HR-J780EU/J785EK] <SYSCON IC3001> MODE MODE MODE MODE MODE MODE MODE MODE PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO. PIN NO. PIN NO.
  • Page 69: System Control Block Diagram

    4.15 SYSTEM CONTR OL BLOCK DIA GRAM MAIN ( SYSCON ) IC3001 ONLY USED SYSTEM CONTROL MICR O PR OCESSOR FOR HR-J680EU/J780EU X3001 C3025 TIMER CLOCK CN3003 Timer Clock ( 32KHz ) CAP REV ( L ) CAP REV ( L ) SCREEN OSD CS OSC2 ( OUT )
  • Page 70: Video Block Diagram

    4.16 VIDEO BLOCK DIA GRAM MAIN ( VIDEO , ON SCREEN , TERMINAL ) SYSCON V.PULSE C.SYNC I2C D ATA I2C CLK NORM/MESEC/S I2C CLK2 I2C D ATA2 WF10 IC201 OSD CS I2C CLK S.CLK CV IN S.DATA FRSYS I2C D ATA Q23,Q201 CVOUT WF11...
  • Page 71: Audio Block Diagram

    4.17 AUDIO BLOCK DIA GRAM MAIN ( VIDEO/A UDIO , TERMINAL ) TUNER DEMOD (R) DEMOD (L) ( VIDEO & AUDIO SIGNAL PROCESSOR ) RF A UDIO TU A UDIO J7105 A.MUTE(H) A.MUTE (H) FR ONT IN INPUT A.FF A.FF A.IN (R) SELECT (R-CH)
  • Page 72: Parts List

    SECTION 5 PARTS LIST SAFETY PRECAUTION Parts identified by the symbol are critical for safety. Replace only with specified part numbers. < > PACKING AND ACCESSORY ASSEMBLY The instruction manual to be provided with this product will differ according to the destination. ADHESIVE TAPE (HR-J680EK/J785EK) SPEC OF BARCODE...
  • Page 73 < > FINAL ASSEMBLY BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and per- formance. We recommend that genuine JVC parts be used. R.PAUSE BOARD ASSY <91> (HR-J780EU) (Incl <03>) 505F...
  • Page 74: Final Assembly M2

    REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 75 < > MECHANISM ASSEMBLY A/C HEAD BOARD ASSY <12> LOADING MOTOR BOARD ASSY <55> Classifi- Symbol in Part No. cation drawing Grease KYODO-SH-P NOTE:The section marked in AA and BB indicate lubrication and greasing areas. COSMO-HV56...
  • Page 76: Mechanism Assembly M4

    REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 77: Electrical Parts List

    ELECTRICAL PARTS LIST REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 78 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 79 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 80 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 81 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 82 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 83 REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...
  • Page 84: A/C Head Board Assembly <12

    REF No. PART No. PART NAME, DESCRIPTION REF No. PART No. PART NAME, DESCRIPTION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...

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