JVC HR-J491MS, HR-J491MS/S Service Manual
SERVICE MANUAL
VIDEO CASSETTE RECORDER
HR-J491MS, HR-J491MS
/S
Regarding service information other than these sections, refer to the service manual No. 82870 (HR-J481MS).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
GENERAL
Power requirement
Rating :
Operating : AC 90 V – 260 V
Power consumption : 14 W
Temperature
Operating : 5°C to 40°C
Storage : –20°C to 60°C
Operating position : Horizontal only
Dimensions (W x H x D) : 360 mm x 94 mm x 247 mm
Weight : 3.0 kg
Format : VHS standard
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(LP) : 480 min. with E-240 video cassette
(EP) : 480 min. with T-160 video cassette
VIDEO/AUDIO
Signal system : PAL-type colour signal and CCIR
Recording system : DA-4 (Double Azimuth) head helical
Signal-to-noise ratio : 45 dB
Horizontal resolution : 250 lines (PAL/MESECAM)
Frequency range : 70 Hz to 10,000 Hz
Input/Output : RCA connectors (IN x 2, OUT x 1)
(The specifications shown pertain specifically to the model HR-J491MS.)
TUNER/TIMER
AC 110 V – 240 V
(PAL/MESECAM)
: 160 min. with T-160 video cassette
(NTSC)
(PAL/MESECAM)
(NTSC)
monochrome signal, 625 lines
50 fields
NTSC colour and EIA monochrome
:
signals, 525 lines/60 fields
scan system
: 220 lines (NTSC)
d, 50 Hz/60 Hz
d, 50 Hz/60 Hz
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD
TV channel storage
capacity
Tuning system : Frequency synthesized tuner
Channel coverage
VHF : (Low) 42 MHz – 175 MHz
UHF : 470 MHz – 870 MHz
Aerial output : UHF channels (Adjustable E28 – E60)
Memory backup time : Approx. 6 months
ACCESSORIES
Provided accessories : RF cable,
*Not provided in certain areas.
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without
notice.
: 99 positions (+AUX position)
(High)175 MHz – 470 MHz
Estimated figure based on supplied
fresh battery; actual performance may
differ.
Lithium battery CR2025,
Infrared remote control unit,
“R6/UM-3” battery x 2,
Conversion plug*
HR-J491MS,HR-J491MS/S V15C1
No.82935
August 2002
TABLE OF CONTENTS
DIFFERENT TABLE .............................................................................................................................................................................................. 1 only
5. PARTS LIST (5-1only)
5.1 PACKING AND ACCESSOR Y ASSEMBL Y <M1> ................................................................................................................................. 5-1
The following table indicates main different points between models HR-J481MS, HR-J491MS and HR-J491MS/S.
ITEM
POWER PLUG CEE SASO
WINDOW COLOR SMOKE GRAY SMOKE BLUE
REMOCON COLOR PAINT SILVER MOLD LIGHT GRAY
CONVERSION PLUG NOT USED NOT USED USED
MODEL
HR-J481MS
The following table indicates different parts number between models HR-J481MS, HR-J491MS and HR-J491MS/S.
PACKING AND ACCESSORY ASSEMBL Y<M1>
PACKING AND ACCESSORY ASSEMBLY<M1> is indicated on the parts list.
FINAL ASSEMBL Y<M2>
REF
!
!501 FRONT PANEL ASSY LP10348-021D LP10348-035A
!511 BOTTOM CHASSIS LP10350-005D *LP10350-005G
!517 POWER CORD QMP4A10-170 QMP73J0-170
ITEM
NO.
501C DISPLAY WINDOW LP20976-021A LP20976-032A
525
SPECIAL SCREW/SCREW,MECHA
MODEL
HR-J481MS HR-J491MS
PQ40413 QYTDSF4012Z
MECHANISM ASSEMBL Y<M4>
REF
!
ITEM
NO.
1 MAIN DECK ASSY LP20821-006A *LP20821-006B
5 GUIDE POLE(SUPPLY) LP40098-001B *LP40701-001A
7
TENSION STUD BASE ASSY
61 MOTOR GUIDE LP30230-001B *LP30230-003D
72 TENSION ARM ASSY LP40108-002A *LP40108-001A
88 IDLER ARM ASSY LP40114-012A *LP40114-01 1B
90 CLUTCH UNIT 3 LP40593-001A *LP40593-003C
114 RELAY GEAR LP30242-002A *LP30242-002B
115 OPENER GUIDE LP30339-002E *LP30339-002F
122 SIDE HOLDER(L) LP10081-002L *LP10081-002P
123 SIDE HOLDER(R) LP10082-002M *LP10082-002V
124 LOCK LEVER(L) LP30255-006A *LP30255-006B
132 GUIDE RAIL LP30244-002G *LP30244-002H
138 HOLD PLATE LP30500-001C *LP30500-001D
151 DOOR OPENER LP20324-003B *LP20324-003C
MODEL
HR-J481MS HR-J491MS HR-J491MS/S
LP40637-002A *LP40637-002B
MAIN BOARD ASSEMBLY<03>
REF
!
Note: Mark is same as left.
ITEM
NO.
C5 E CAPACITOR QEKC1CM-476 *QEKC0JM-476
C5202
E CAPACITOR QEMT1CM-687 *QETN1CM-108
C6007
E CAPACITOR QEKC0JM-227 *— *—
Mark — is not used.
Mark * reference model was also changed.
MODEL
HR-J481MS HR-J491MS HR-J491MS/S
HR-J491MS
HR-J491MS/S
HR-J491MS/S
1
Loading...