SERVICE MANUAL
VIDEO CASSETTE RECORDER
No. 82838
December 2000
This service manual is printed on 100% recycled paper.
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
HR-A57U
Regarding service information other than these sections, refer to the HR-VP59U service manual (No. 82833).
Also, be sure to note important safety precautions provided in the service manual.
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-A57U/A37U)
GENERAL
Power requirement
: AC 120 V ` , 60 Hz
Power consumption
[HR-A57U]
Power on
: 18 W
Power off
: 2.0 W
[HR-A37U]
Power on
: 16 W
Power off
: 2.0 W
Temperature
Operating
: 5°C to 40°C (41°F to 104°F)
Storage
: 20°C to 60°C (4°F to140°F)
Operating position
: Horizontal only
Dimensions (W x H x D)
: 360 mm x 94 mm x 247 mm
(14-3/16" x 3-3/4" x 9-3/4")
Weight
: 3.0 kg (6.6 lbs)
Format
: VHS NTSC standard
Maximum recording time
SP
: 210 min. with ST-210 video cassette
EP
: 630 min. with ST-210 video cassette
VIDEO/AUDIO
Signal system
: NTSC-type color signal and EIA
monochrome signal, 525 lines/
60 fields
Recording/Playback system
: DA-4 (Double Azimuth) head helical
scan system
Signal-to-noise ratio
: 45 dB
Horizontal resolution
: 230 lines
Frequency range
[HR-A57U]
Normal audio
: 70 Hz to 10,000 Hz
Hi-Fi audio
: 20 Hz to 20,000 Hz
[HR-A37U]
Normal audio
: 70 Hz to 10,000 Hz
Input/Output
: RCA connectors (IN x 2, OUT x 1)
TUNER
Tuning system
: Frequency-synthesized tuner
Channel coverage
VHF
: Channels 213
UHF
: Channels 1469
CATV
: 113 Channels
RF output
: Channel 3 or 4 (switchable; preset to
Channel 3 when shipped) 75 ohms,
unbalanced
TIMER
Clock reference
: Quartz
Program capacity
: 1-year programmable timer/8 programs
Memory backup for timer is not supported.
ACCESSORIES
Provided accessories
: RF cable (F-type),
Infrared remote control unit,
"AA" battery x 2
Specifications shown are for SP mode unless specified otherwise.
E. & O.E. Design and specifications subject to change without notice.
1
MODEL
HR-VP59U
HR-A57U
HR-A57U(C)
ITEM
VCR PLUS+
USED
NOT USED
REMOTE CONTROLLER
TV MBR/CABLE&DBS
NOT MBR
FRONT PANEL coler
BLACK
DARK GRAY
TABLE OF CONTENTS
DIFFERENT TABLE ........................................................................................................................................................ (1 only)
4. CHARTS AND DIAGRAM (4-1 to 4-4)
4.1
MIAN CIRCUIT BOARD ................................................................................................................................................ 4-2
4.2
REMOTE CONTROLLER SCHEMATIC DIAGRAM ..................................................................................................... 4-4
The following table indicate main different points between models HR-VP59U,HR-A57U and HR-A57U(C).
REF.
MODEL
HR-VP59U
HR-A57U
HR-A57U(C)
NO
ITEM
301
PACKING CASE
LP30836-001A
LP30836-006A
! 310
INST BOOK(EN)
LPT0471-001A
LPT0497-001A
!
INST BOOK(FR)
--
--
LPT0497-003A
306
REMOTECONTEROLLER
LP20878-009A
LP20878-001A
316
WARRANTY CARD
--
--
BT-52004-1
317
REGIST.CARD
BT-51020-2
--
319
SER.NET CARD
--
--
BT-20071B
PACKING AND ACCESSORY ASSEMBLY <M1>
The following tables indicate different parts number between models HR-VP59U,HR-A57U and HR-A57U(C).
Notes : Mark -- is not used.
Mark
is same as left.
Mark * reference model was also changed.
REF.
MODEL
HR-VP59U
HR-A57U
HR-A57U(C)
NO
ITEM
! 501
FRONT PANEL ASSY
LP10348-001A
LP10348-003A
501A
CASSETTE DOOR
LP20977-001A
LP20977-002A
501C
DISPLAY WINDOW
LP20976-001A
LP20976-003A
FINAL ASSEMBLY <M2>
REF.
MODEL
HR-VP59U
HR-A57U
HR-A57U(C)
NO
ITEM
PW1
MAIN BOARD ASSY
*PA10130-01B1
LPA10130-01C1
C5203
E CAPACITOR
*QEMT1AM-687
QETN1AM-108
C5204
E CAPACITOR
*QETN2AM-475
QETJ2AM-475
MAIN ASSEMBLY <03>
Printed in Japan
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DIVISION OF JVC AMERICAS CORP.
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S40895-03