SERVICE MANUAL
VIDEO CASSETTE RECORDER
No. 82932
June 2002
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
HR-J791AM,HR-J797AM
Regarding service information other than these sections, refer to the HR-J781AM, J787AMservice manual (No. 82871).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS
GENERAL
Power requirement
Rating
: AC 110 V 240 V ` , 50 Hz/60 Hz
Operating
: AC 90 V 260 V ` , 50 Hz/60 Hz
Power consumption
: 16 W
Temperature
Operating
: 5°C to 40°C
Storage
: 20°C to 60°C
Operating position
: Horizontal only
Dimensions (W x H x D)
: 400 mm x 94 mm x 270 mm
Weight
: 3.1 kg
Format
: VHS standard
Maximum recording time
(SP)
: 240 min. with E-240 video cassette
(PAL/MESECAM)
: 160 min. with T-160 video cassette
(NTSC)
(LP)
: 480 min. with E-240 video cassette
(PAL/MESECAM)
(EP)
: 480 min. with T-160 video cassette
(NTSC)
VIDEO/AUDIO
Signal system
: PAL-type colour signal and CCIR
monochrome signal, 625 lines 50 fields
: NTSC colour and EIA monochrome
signals, 525 lines/60 fields
Recording system
: DA-4 (Double Azimuth) head helical
scan system
Signal-to-noise ratio
: 45 dB
Horizontal resolution
: 250 lines (PAL/MESECAM)
: 220 lines (NTSC)
Frequency range
Normal audio
: 70 Hz to 10,000 Hz
Hi-Fi audio
: 20 Hz to 20,000 Hz
Input/Output
: RCA connectors (IN x 2, OUT x 1)
TUNER/TIMER
TV channel storage capacity : 99 positions (+AUX position)
Tuning system
: Frequency synthesized tuner
Channel coverage
VHF
: (Low) 42 MHz 175 MHz
(High) 175 MHz 470 MHz
UHF
: 470 MHz 870 MHz
Aerial output
: UHF channels (Adjustable E28 E60)
Memory backup time
: Approx. 6 months
Estimated figure based on supplied
fresh battery; actual performance may
differ.
ACCESSORIES
Provided accessories
: RF cable,
Lithium battery CR2025,
Infrared remote control unit,
"R6/UM-3" battery x 2,
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without notice.
ITEM
MODEL
HR-J781AM
HR-J791AM
WINDOW COLOR
BLUE
METALLIC BLUE
RCU COLOR
SILVER
LIGHT GRAY
!
REF.
MODEL
HR-J781AM
HR-J791AM
NO
ITEM
301
PACKING CASE
LP31005-001A
*LP31005-003A
306
REMOTE CONTROLLER
LP20878-008B
LP20878-018B
306A
COVER(BATTERY)
LP40610-002A
LP40610-003A
! 310
INST.BOOK(EN)
LPT0595-001A
LPT0687-001A
!
INST.BOOK(CH)
LPT0595-002A
LPT0687-002A
!
INST.BOOK(RU)
LPT0595-003A
LPT0687-003A
The following table indicate main different points between models HR-J781AM and HR-J791AM.
PACKING AND ACCESSORY ASSEMBLY <M1>
The following table indicate different parts number between models HR-J781AM and HR-J791AM.
1
ITEM
MODEL
HR-J787AM
HR-J797AM
WINDOW COLOR
BLUE
METALLIC BLUE
RCU COLOR
SILVER
LIGHT GRAY
The following table indicate main different points between models HR-J787AM and HR-J797AM.
!
REF.
MODEL
HR-J781AM
HR-J791AM
NO
ITEM
! 501
FRONT PANEL ASSY
LP10333-045B
LP10434-010A
501A
CASSETTE DOOR
LP20961-017B
LP20961-028A
! 502
TOP COVER
LP10013-045A
*LP10013-045B
524
STOPPER
LP40253-001B
--
525
SPECIAL SCREW/SCREW
PQ40413
*QYTDSF4012Z
FINAL ASSEMBLY <M2>
!
REF.
MODEL
HR-J781AM
HR-J791AM
NO
ITEM
IC3003
IC/IC(EEPROM)
AT24C08N-10SC-X
*LPN0636-001A-01
Q1
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q2
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q3
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q4
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
C3003
E CAPACITOR
QEKJ1HM-106
*QEKJ1CM-106
C5202
E CAPACITOR
QEMT1CM-687
*QETN1CM-108
MAIN BOARD ASSEMBLY <03>
Notes : Mark -- is not used.
Mark * reference model was also changed.
Notes : Mark -- is not used.
Mark * reference model was also changed.
2
The following table indicate different parts number between models HR-J787AM and HR-J797AM.
!
REF.
MODEL
HR-J787AM
HR-J797AM
NO
ITEM
301
PACKING CASE
LP31005-001A
*LP31005-003A
306
REMOTE CONTROLLER
LP20878-008B
LP20878-018B
306A
COVER(BATTERY)
LP40610-002A
LP40610-003A
! 310
INST.BOOK(EN)
LPT0595-001A
LPT0687-001A
!
INST.BOOK(CH)
LPT0595-002A
LPT0687-002A
PACKING AND ACCESSORY ASSEMBLY <M1>
!
REF.
MODEL
HR-J787AM
HR-J797AM
NO
ITEM
! 501
FRONT PANEL ASSY
LP10333-044B
LP10434-011A
501A
CASSETTE DOOR
LP20961-017B
LP20961-028A
! 502
TOP COVER
LP10013-045A
*LP10013-045B
524
STOPPER
LP40253-001B
--
525
SPECIAL SCREW/SCREW
PQ40413
*QYTDSF4012Z
FINAL ASSEMBLY <M2>
!
REF.
MODEL
HR-J787AM
HR-J797AM
NO
ITEM
IC3003
IC/IC(EEPROM)
AT24C08N-10SC-X
*LPN0676-001A-03
Q1
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q2
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q3
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
Q4
TRANSISTOR
2SC4081/S/-X
*2SC4081/QRS/-X
C3003
E CAPACITOR
QEKJ1HM-106
*QEKJ1CM-106
C5202
E CAPACITOR
QEMT1CM-687
*QETN1CM-108
MAIN BOARD ASSEMBLY <03>
(Sanwa)-V15D1/D15
HR-J791AM,J797AM
E. & O. E. No. 82932
Printed in Japan
WPC0207
SW
VICTOR COMPANY OF JAPAN, LIMITED
HOME AV NETWORK BUSINESS UNIT
12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan