JVC HR-J671EU, HR-J672EK, HR-J674EU Service Manual
SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-J671EU/J672EK/J674EU
Regarding service information other than these sections, refer to the HR-J670EK/EU service manual (No. 82784).
Also, be sure to note important safety precautions provided in the service manual.
(The specifications shown pertain specifically to the model
SPECIFICATIONS
GENERAL
Power requirement : AC 220 V – 240 V` , 50 Hz/60 Hz
Power consumption
[HR-J670/671/672/673/674EU]
Power on : 19 W
Power off : 4.9 W
[HR-J470/472/270/272EU]
Power on : 17 W
Power off : 4.9 W
Temperature
Operating : 5°C to 40°C
Storage : –20°C to 60°C
Operating position : Horizontal only
Dimensions (WxHxD) : 400 x 94 x 278 mm
Weight : 3.5 kg
Format : VHS PAL standard
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(LP) [HR-J670/671/672/673/674/470/472EU only]
: 480 min. with E-240 video cassette
VIDEO/AUDIO
Signal system : PAL-type colour signal and CCIR
Recording system : DA4 (Double Azimuth) head helical
HR-J670EU/J671EU/J672EU/J673EU/J674EU, HR-J470EU/J472EU, HR-J270EU/J272EU)
Signal-to-noise ratio : 45 dB
Horizontal resolution : 250 lines
monochrome signal, 625 lines 50 fields
scan system [HR-J670/671/672/673/
674/470/472EU]
Rotary two-head herical scan system
[HR-J270/272EU]
Frequency range : 70 Hz to 10,000 Hz (Normal audio)
Input/Output : 21-pin SCART connectors :
RCA connectors : AUDIO OUT x 1
TUNER/TIMER
TV channel storage capacity
Tuning system : Frequency synthesized tuner
Channel coverage : VHF 47 – 89/104 – 300/
Aerial output : UHF channels 22 – 69 (Adjustable)
Memory backup time : Approx. 10 min.
ACCESSORIES
Provided accessories : RF cable,
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.
20 Hz to 20,000 Hz (Hi-Fi audio)
[HR-J670/671/672/673/674EU only]
IN/OUT x 1, IN/DECODER x 1
[HR-J670/671/672/673/674EU only]
: 99 positions (+AUX position)
302 – 470MHz
UHF 470 – 862MHz
Infrared remote control unit,
“R6” battery x 2
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 82815
July 2000
TABLE OF CONTENTS
DIFFERENT TABLE.................................................................................................................................................................. 1
4. CHARTS AND DIAGRAMS (4-1 to 4-6)
4.1 MAIN, A/C HEAD, R.PAUSE, MINI OPE AND LOADING MOTOR CIRCUIT BOARDS ............................................... 4-2
4.2 DEMODULATOR SCHEMATIC DIAGRAM ................................................................................................................... 4-4
4.3 DEMODULATOR CIRCUIT BOARD ............................................................................................................................. 4-6
5. PARTS LIST (5-1 only)
5.1 ELECTRICAL PARTS LIST ........................................................................................................................................... 5-1
DEMODULATOR BOARD ASSEMBLY ................................................................................................................................ 5-1
[HR-J671EU/J674EU/J672EK]
The following table indicate main different points between models HR-J670EU, HR-J671EU, HR-J674EU, HR-J670EK and HR-J672EK.
ITEM
MODEL
FRONT PANEL COLOR SILVER BLACK & GOLD SILVER SILVER BLACK & L.GLAY
HR-J670EU HR-J671EU HR-J674EU HR-J670EK HR-J672EK
The following table indicate different parts number between models HR-J670EU, HR-J671EU, HR-J674EU, HR-J670EK and HR-J672EK.
PACKING AND ACCESSORY ASSEMBLY <M1>
REF. MODEL
!
NO. ITEM
! 310 INST.BOOK(CZ) LPT0322-013A — —
! 310 INST.BOOK(PO) LPT0322-014A — —
! 310 INST.BOOK(HU) LPT0322-015A — —
HR-J670EU HR-J671EU HR-J674EU
CABINET AND CHASSIS ASSEMBLY <M2>
REF. MODEL
!
NO. ITEM
! 501 FRONT PANEL ASSY LP10289-003D LP10289-049B LP10289-048B LP10289-009B LP10289-050C
501A CASSETTE DOOR LP20868-002A LP20868-029A LP20868-028A LP20868-002A LP20868-029A
501C DISPLAY WINDOW LP20869-003A LP20869-071A LP20869-070A LP20869-009A LP20869-072A
! 502 TOP COVER LP10013-017C LP10013-023D LP10013-051A LP10013-017C LP10013-023D
503 TAP SCREW QYTDSF3010M QYTDSF3010R
HR-J670EU HR-J671EU HR-J674EU HR-J670EK HR-J672EK
MAIN BOARD ASSEMBLY <03>
REF. MODEL
!
NO. ITEM
PW1 MAIN BOARD ASSY LPA10086-02E1 LPA10086-02H1 LPA10086-03E1 LPA10086-03H1
IC1 IC
D5301 ZENER DIODE
HR-J670EU HR-J671EU HR-J674EU HR-J670EK HR-J672EK
JCP8020-MSB JCP8020-MSD-2
*
MTZJ15A MTZJ15C
*
JCP8020-MSB JCP8020-MSD-2
*
MTZJ15A
*
MTZJ15C
DEMOD BOARD ASSEMBLY <14>
REF. MODEL
!
NO. ITEM
PW1 DEMOD BOARD ASSY
Notes : Mark — is not used.
Mark is same as left.
Mark
reference model was also changed.
*
1
HR-J670EU HR-J671EU HR-J674EU HR-J670EK HR-J672EK
LPA10060-03B LPA10094-02A
*
LPA10060-03B LPA10094-02A
*
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