Jvc HRD 560 EE Service Manual

Page 2

Section

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3
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NOTE: For a technical description. please refer to Technical Guide VTG82063 General.

TABLE OF CONTENTS

This

Page

Important Safety Precamions
INSTRUCTIONS
DISASSEMBLV AND MECHANISM ADJUSTMENTS

DISASSEMBLY
MACHANISM ADJUSTMENTS

MAIN MECHANISM PARTS 1 - 5
INSPECTION AND MAINTENANCE 1 A 7
MAIN PARTS REMOVAL AND REPLACEMENT 1 - 8

ELECTRICAL ADJUSTMENTS

PREPARATION 2 - I
SWITCHING REGULATOR CIRCUIT 2 , 2
TIMER CIRCUIT 2 - 2
SERVO CIRCUIT 2 - 3
VIDEO CIRCUIT 2 , 4
AUDIO CIRCUIT 2 - 7
TUNER /' IF CIRCUIT 2 - T

V CHARTS AND DIAGRAMS

CIRCUIT BOARD AND LOCATION
GENERAL INFORMATION
BOARD INTERCONNECTIONS
VIDEO BLOCK DIAGRAM
PRE/ REC BLOCK DIAGRAM
SERVO BLOCK DIAGRAM
AUDIO BLOCK DIAGRAM
MECHACON BLOCK DIAGRAM
SWITCH REGULATOR 81 REGULATOR
(MAIN) SCHEMATIC DIAGRAMS
SWITCHING REGULATOR CIRCUIT BOARD
SERVO SCHEMATIC DIAGRAM
SERVO (MAIN) CIRCUIT BOARD
AUDIO SCHEMATIC DIAGRAM
AUDIO (MAIN) CIRCUIT BOARD
MECHACON SCHEMATIC DIAGMM
MECHACON (MAIN) CIRCUIT BOARD
TERMINAL SCHEMATIC DIAGRAM
TERMINAL (MAIN) CIRCUIT BOARD
DECK TERMINAL MODE MOTOR CAPSTAN
MDA AND CASS HOUSING SCHEMATIC
DIAGRAMS
DECK TERMINAL. LOADING MDA. CASS
HOUSING AND A / CTL HEAD CIRCUIT BOARDS
MAIN CIRCUIT BOARD
VIDEO UNIT 8. VIDEO (MAIN)

SCHEMATIC DIAGRAMS 3 .
VIDEO UNIT & VIDEO (MAIN)

CIRCUIT BOARDS
TUNER UNIT SCHEMATIC DIAGRAM
TUNER UNIT CIRCUIT BOARD '
TIMER/ DISPLAY / SW SCHEMATIC DIAGRAM
TIMER / DISPLAY / SW CIRCUIT BOARD
PRE / REC SCHEMATIC DIAGRAM
PRE/ REC CIRCUIT BOARD
REMOTE CONTROL SCHEMATIC AND

RF CONVERTER 8 MIXBOOSTER

SCHEMATIC DIAGRAM

Section

TitIo Page

4 EXPLODED VIEWS AND PARTS LIST

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5.

PACKING ASSEMBLY (MI)
CABINET ASSEMBLY (M2)
CHASSIS ASSEMBLY (M3)
MECHANISM ASSEMBLY (M4)

ELECTRICAL PARTS LIST
SWITCH REGULATOR BOARD ASSEMBLY

(0)) 5 - 1
MAIN BOARD ASSEMBLY <03) 5 - 2
VIDEO UNIT BOARD ASSEMBLY <05) 5 E
TUNER UNIT BOARD ASSEMBLY <08) 5 - IU
AUDIO CONTROL HEAD BOARD <12) 5 A 12
TIMER/ DISPLAY / SW BOARD ASSEMBLY

<21) 5 - 12
MEMORY BOARD ASSEMBLY (35) 5 - 13
UPPER DRUM BOARD <41) ----- - 14
PRE / REC AMP BOARD ASSEMBLY <43) 5 - 14
DECK TERMINAL BOARD ASSEMBLY (51>

LOADING MDA BOARD ASSEMBLY <55)
CASSETTE HOUSING BOARD <56) --------

6. TECHNICAL INFORMATIONS

6 1

CPU pm Iunctions

Page 9

1 .3 MAIN MECHANISM PARTS

Fig.1-3-1 Top view 0! main-deck

6

Fig. 1-3-2 Bonom View of main-deck

1-5

Page 16

No. Item Chedtpoints Adjustment and Check:

5 Pinch roller cam Set mechanism to EieCt mode (internal holder
Control cam of the cassette housing is locked in raised)
Hall loading gear assembly position.

Guide arm assembly
5°,an Correct direction Pinch roller cam '
Guide arm my

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Holes overlm Holes overlap m oj- 9 0
each other. each other.
41:
\ :2»
Hall loading gear assv Control cam i!) V
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C)
Fig. 1-5-16 Control/Pinch roller cam
Fig. 1-5-17 Control cam position

Important: Do not remove or 1] When installing the pinch roller cam. overlap

disturb parts other than the largest hole of the gear portion with the

those mentioned. hole of the deck.

See Fig.1-546. 2) Set the control mm on the deck with the
hole of the groove overlapped with the hole
of the deck. Observe that the small hole of
the control corn and the ridge of the pinch
roller cam are aligned.

(if the control cam does not fit readily, shift
the rear plate assembly within the range of
pIav-l

3) Install the half loading gear assembly with
the hole overlapped with the hole at the
deck. Secure with E-ring.

4) Install the guide assembly over the spring
and with the hole overlapping that of the
deck. Engage the spring correctly.

Cassette housing ammbly Install the casette housing assembly with the
mechanism in the Eiect mode. Also observe
that the inner holder of the housing is raised
and locked.

6 Clutch assembly Take-up torque 1) Remove cassette housing and set tor play»

(Symptom: Inadequate take-up
torquei

back mode (see Section 1.2).

2) Set torque gauge on the take-up reel disk.
Gradually rel-x your grip on the gauge and
read the needle indication It the point the
pup begins to rotate with the disk. Con-
firm indication of 60 to 1m.