JVC HR-A630MS User manual

GENERALES
epi
ala)
ais
_
SPECIFICATIONS
7he
specitication
shown
per
Alimentation
:
CA
220
-
240
V~,
50/60
Hz
Consommation
:24W
Températures
—
:
5°C
a
40°C
(Fonctionnement)
ie
-20°C
&
60°C
(Stockage)
Position
de
“fonctionnement
:
Seulement
horizontale
‘Dimensions
(LxHxP)
:
400
x.94
x
340
mm
Poids
2
4,3
kg
Format
:
Standard
VHS
PAL/SECAM
Largeur
de
bande
:
12,65
mm
Vitesse
de
bande
(VN)
:
23,39
mm/s
(LD)
2.11,70
mm/s.
Durée
maximale
-d'enregistrement
(VN)
:
240
mn
avec
une
cassette
vidéo
E-240
(LD)
:
480
mn
avec
une
cassette
:
vidéo
E-240
VIDEO/AUDIO
Systéme
de
signal
:
Signaux
couleur
PAUSECAM
et
monochromes
CCIR,
625
=
lignes/50
trames
Me
es
Systéme
d'enregistrement
:
Systéme
&
deux
fois
deux
:
tates
rotatives,
balayage
:
hélicoidal
avec
combinaison
-
Pores
de
tétes
vidéo
DA4
Entrée
:
0,5
42,0
Vcc,
75
ohms,
asymétrique
Sortie
+
¥4,0.Vec,
75
ohms,”
: . ;
asymétrique
Rapport
signal/bruit
:45.dB
rs
Résolution
hérizon'
240.fignes
-
Gamme
de
fréquence;
70
Hz:8.10.000
Hz
2
I
(audio-normal)
a
7
8.
20
Hz
a
20.000
Hz
Bo
oe
taudio
Hi-Fi)
Entrée/sortie
©
mr
Pet
21.
be
(ENTREE/SORTIE
x
1;
ENTREE/DECODEUR
x
1)
Connecteurs
RCA
°
(ENFREE.
VIDEO
x
1;
ENTREE
AUDIO
x
1;
SORTIE
AUDIO
x
1)
SYNTONISEUR.
Systeme
de
syntonisat
ynténiseur
a
synthése
de
;
aha
“s8
fréquence
Capacité
de
canaux
TV...
::99
positions
—
;
:
go
Ss
ition
AUX
*AU")
Canaux
couverts
_MINUTERIE
1e2ye
iF
Référence
de
I‘horloge
Capacité
de
programmation
Durée
de
soutien
mémoire
ACCESSOIRES
i
Accessoires
fournis
ain
specifically
to
the
model
HR-J636MS)
:
Par
quartz
:
Minuterie
sur
1
an/8
programmes
>
60
mn
:
Cable
d'antenne,
Boitier
de
télécommande
a
infrarouge,
Pile
"R6"
x2,
.
Cable
péritélévision,
Adaptateur
antenne
Présentation
et
caractéristiques
modifiables
sans
préavis.
COPYRIGHT
©
1996
VICTOR
COMPANY
OF
JAPAN,
LTD.
No.
82555
July
1996

TABLE
OF
CONTENTS
Section
Title
Page
important
Satety
Precautions
INSTRUCTIONS
1,
DISASSEMBLY
1.1
DISASSEMBLY
FLOW
CHART
...
1.2
HOW
TO
READ
THE
DISASSEM
AND
ASSEMBLY
....
1.3
DISASSEMBLY/ASSEMBLY
METHOD
.....
1.4
CASSETTE
HOUSING
INSTALLATION
1.5
SERVICE
POSITION
oo.
~
1.5.1
How
to
take
out
the
Mechanism
and
Main
board
assembiies
.....
1.5.2
Cautions
on
cassette
loading
when
mechanism
is
In
service
position
...
1.5.3
Cassette
loading
and
ejecting
procedures
when
mechanism
is
in
service
position
.
1.5.4
Opening
on
the
chassis
........
1.6
MECHANISM
SEAVICE
MODE
1.6.1
How
to
set
the
“MECHANISM
SERVICE
MODE”
1.7
EMERGENCY
DISPLAY
FUNCTION
.
1.7.1
How
to
display
record
of
an
emergency
1.7.2
Detail
of
emergency
faults
«......
1.7.3
How
to
clear
emergency
record
2.
MECHANISM
ADJUSTMENT
2.1
PREPARATION
...
2.1.1
Precautions
....
2.1.2
Check
without
cassette
housing
assembly
2.1.3
Manual!
removal
of
loaded
tape
2.1.4
Test
Equipment
.............
2.2
MAIN
MECHANISM
PARTS
.
2.2.1
Cleaning
...
2.2.2
Lubrication
...
2.3
INSPECTION
ANI
i
2.3.1
Suggested
servicing
schedule
for
main
components
.....
2.4
DISASSEMBLY/ASSEMBLY
PROCEOURE
OF
MECHANISM
...
2.4.1
Precaution
before
disassembling
mechanism
.................
2.4.2
How
to
set
the
exclusive
mechanism
operation
mode
(MECHANISM
ASSEMBLING
MODE)
..
2.5
MAIN
PARTS
REPLACEMENT
OF
MECH
2.5.1
Pinchi
Roller
Arm
Assembly
.
2.5.2
AC
Head
..
2.5.3
Pinch
plate
2.5.4
Mode
Motor
.
2.5.5
Lever
Assembly,Sub
Deck
Assembly,Capstan
Motor
2.5.6
Control
Bracket-1
...
2.5.7
Reel
Bracket,
Slit
Disk
(take-up)
.
2.5.8
Control
Bracket-2,Control
Plate
..
2.5.9
Sub
Brake
(take-up),Control
Cam
..
2.5.10
Slide
Plate
oo...
eens
2.5.11
Change
Lever,Rotary
Encoder
.
aca
ed)
wk
sea
daca
a
ooooayuuaa
PVRVYYEVERPD
PhESWOWNN
HH
—
VAYNNYHY
HNN
N
HNN
ODANNNODOHHSSSE
2.5.12
Sub
Brake
(supply),
Tension
Band
Assembly,
Tension
Ari
Assembly,
Take-up
Lever
Assembly,
Slit
Disk
(supply)
2.5.13
Take
-up
Head,
Tension
Arm
Lever
2.5.14
Guide
Rail
........
2.5.15
Stator
Assembly
..
2.5.16
Rotor
Assembly
...
2.5.17
Upper
Orum
Assembly
2.6
CHECKUP
AND
ADJUSTMENT
OF
MECHANISM
PHASE
.
2.6.1
Precaution
2.6.2
Loading
Arm
Assembly(supply,take-up)
..
2.6.3
Rotary
Encoder,Change
Lever,Contro!
Cam
..
2.6.4
Slide
plate
...
2.6.5
Control
Plate
..
2.7
TAPE
INTERCHANGEABILITY
ADJUSTMENT
.
2.7.1
Tape
pattern...
2.7.2
AIC
head
height
&
azimuth
.
2.7.3
A/C
head
phase
(X-vaiue)
2.7.4
LP
mode
auto
tracking
.
2.7.5
Tension
pole
position
2.7.6
Take-up
torque
......
3.ELECTRICAL
ADJUSTMENT
3.1
PRECAUTION
3.1.1
Required
test
equipment
.
eee
ee
et
wOOo
NNOOU
AA
WWONNN~OOO
PPVPVVVY
EYP
YY
VYYYND
we
31
P|
Section
Title
3.4.2
Required
adju:
Bie)
cin
ee
3.2
SEAVO
CIRCUIT
.
3.2.1
PB
switching
poi
3.2.2
Siow
tracking
preset
3.3
VIOEO
CIRCUIT
...
3.3.1
AUTO
Picture
...
3.4
SYSCON
CIRCUIT
..
3.4.1
Timer
clock
.......
3.5
TUNER
CIRCUIT
.
3.5.1
RF
VCO
.....
3.5.2
SIF
VCO
3.5.3
RF
AGC
.....
3.5.4
33.4MHz
TRAP
3.5.5
40.4MHz
TRAP
....
3.6
DEMODULATOR
CIRCUIT
...
3.6.1
STEREO
SEPARATION
....
4.
CHARTS
AND
DIAGRAMS
SCHEMATIC
DIAGRAM
NOTES
.
CIRCUIT
BOARD
NOTES
........
4.1
BOARD
INTERCONNECTIONS
4.2
SYSTEM
CONTROL
BLOCK
DIAG
4.3
VIDEO
BLOCK
DIAGRAM
.
4.4
AUDIO
BLOCK
DIAGRAM
.
4.5
VIDEO
AND
AUDIO
SCHEMATIC
DIAGRAM
4.8
SYSTEM
CONTROL
SCHEMATIC
DIAGRAM
.
4.7
SWITCHING
REGULATOR
SCHEMATIC
DIAGRAM.......
4.8
TUNER
SCHEMATIC
DIAGRAM
.
4.9
SERVO
SCHEMATIC
DIAGRAM
4.10
ON
SCREEN
SCHEMATIC
DIAGRAM(or
HA-J636MS)
..
4.11
TERMINAL
(MAIN)
SCHEMATIC
DIAGRAM.
4.12
PRE/REC
SCHEMATIC
DIAGRAM
4.13
FMA
SCHEMATIC
OIADRAM
.......,
4.14
MAIN
AND
A/C
HEAD
CIRCUIT
BOARDS
..
4.15
TERMINAL
SCHEMATIC
DIAGRAM.
4.16
TERMINAL
CIRCUIT
BOARD
.
4.17
IF
SCHEMATIC
DIAGRAM
.
4.18
IF
CIRCUIT
BOAAD........
4.19
DEMODULATOR
SCHEMATIC
DIAGRAM
.
4.20
DEMODULATOR
CIRCUIT
BOARD
.....
4.21
SW/DISPLAY,SW/JACK,REC
SAFETY
AN
SCHEMATIC
DIAGRAMS
(for
HR-J636MS)
4.22
SWIDISPLAY,SWIUACK.REC
SAFETY
AND
CASSETTE
SW
CIRCUIT
BOARD
(for
HR-J6Q6MS)
.....-.ceceseseeesieseneee
4247
4.23
DISPLAY,
SW/JACK,REC
SAFETY
AND
CASSETTE
SW
SCHEMATIC
DIAGRAMS
(for
HR-A63OMS/MS(C))
..........
4-49
4.24
DISPLAY,
SWIJACK.REC
SAFETY
AND
CASSETTE
SW
CIRCUIT
BOARDS
(for
HR-A6SOMS/MS(C)}
4.25
PDC
SCHEMATIC
DIAGRAM
4.26
POC
CIACUIT
BOAAD
...........
4.27
FOP
GRID
ASSIGNMENT
AND
ANODE
CONNECTION
..
4.28
REMOTE
CONTROL
SCHEMATIC
DIAGRAM
.....
5.
PARTS
LIST
5.1
PACKING
AND
ACCESSORY
<M1>
5.2
CABINET
AND
CHASSIS
ASSEMBLY
<M2>
..
5.3
MECHANISM
ASSEMBLY
<M4>
5.4
ELECTRICAL
PARTS
LIST
.....
MAIN
BOARD
ASSEMBLY
<03>
..
TERMINAL
BOARD
ASSEMBLY
<06>
IF
BOARD
ASSEMBLY
<07>
........escceees
~
15
AUDIO/CONTROL
HEAD
ASSEMBLY
<t2>
.
5-16
OEMOD
SOARD
ASSEMBLY
<14>
.....
5-16
DISPLAY
BOARD
ASSEMBLY
<28>
...
5-17
REC
SAFETY
BOARD
ASSEMBLY
«32>
CASSETTE
SWITCH
BOARD
ASSEMBLY
<33>.
SW/JACK
BOARD
ASSEMBLY
<36>
..
POC
BOARD
ASSEMBLY
<70>
6
TECHNICAL
INFORMATION
6.1
SYSCON
CIRCUIT
ooo
seescsssseeetnsssssseneecenmasensee
6-1
The
feltoming
labie
trate
Ine
ditfersng
oonis
between
Wodels
(HR-AG1OMS
WR-AGJOWS
(C)_
ang
A-JEIENS!
8
tha
series
a
a
ST
PICTURE
fest

Important
Safety
Precautions
Prior
to
shipment
from
the
factory,
JVC
products
are
strictly
inspected
to
conform
with
the
recognized
product
safety
and
electrical
codes
of
the
countries
in
which
they
are
to
be
sold.
However,
in
order
to
maintain
such
compliance,
it
is
equally
important
to
implement
the
following
precautions
when
a
set
is
being
serviced
@
Precautions
during
Servicing
1.
Locations
requiring
special
caution
are
denoted
by
labels
and
inscriptions
on
the
cabinet,
chassis
and
certain
parts
of
the
product.
When
performing
service.
be
sure
to
read
and
comply
with
these
and
other
cautionary
notices
appearing
in
the
opera-
ON
and
service
manuals
2.
Parts
identified
by
the
A
symbol
and
shaded
(
)
parts
are
critical
for
safety
Replace
only
with
specified
part
numbers
Note:
Parts
in
this
category
also
include
those
specified
to
comply
with
X-ray
emission
standards
for
products
using
cathode
ray
tubes
and
those
specified
for
compliance
with
vanous
regulations
regarding
spurious
radiation
emission,
3.
Fuse
replacement
caution
notice
Caution
for
continued
protection
against
fire
hazard.
Replace
only
with
same
type
and
rated
fuse(s)
as
specified.
.
Use
specified
internal
wiring.
Note
especially:
1)
Wires
covered
with
PVC
tubing
2)
Double
insulated
wires
3)
High
voltage
leads
5.
Use
specified
insulating
materials
for
hazardous
live
parts.
Note
especially:
1}
Insulation
Tape
3)
Spacers
5)
Barrier
2}
PVC
tubing
4)
Insulation
sheets
for
transistors
6.
When
replacing
AC
primary
side
components
(transformers,
power
cords,
noise
blocking
capacitors,
etc.)
wrap
ends
of
wires
securely
about
the
terminals
before
soldering
“its
bo
h*
7,
Observe
that
wires
do
not
contact
heat
producing
parts
(heat-
sinks,
oxide
Metal
film
resistors,
fusible
resistors,
etc.)
8.
Check
that
replaced
wires
do
not
contact
sharp
edged
or
pointed
parts
9.
When
a
power
cord
has
been
replaced,
check
that
10-15
kg
of
force
in
any
direction
will
not
loosen
it.
Power
cord
Fig.
2
.
Also
check
areas
surrounding
repaired
locations
.
Products
using
cathode
ray
tubes
(CRTs)
In
regard
to
such
products,
the
cathode
ray
tubes
themselves,
the
high
voltage
circuits,
and
related
circuits
are
specified
for
compliance
with
recognized
codes
pertaining
to
X-ray
emission.
Consequently,
when
servicing
these
products,
replace
the
cath-
ode
ray
tubes
and
other
parts
with
only
the
specified
parts.
Under
no
circumstances
attempt
to
modify
these
circuits.
Unauthorized
modification
can
increase
the
high
voltage
value
and
cause
X-ray
emission
trom
the
cathode
ray
tube.
to
prevent
safety
hazards,
according
to
the
following
steps
12.
Crimp
type
wire
connector
In
such
cases
as
when
replacing
the
power
transformer
in
sets
where
the
connections
between
the
power
cord
and
power
wansformer
primary
lead
wires
are
performed
using
crimp
type
connectors,
if
repiacing
the
connectors
is
unavoidable,
in
order
perform
carefully
and
precisely
1)
Connector
part
number
:
£03830-001
2)
Required
tool
.
Connector
crimping
tool
of
the
proper
type
which
will
not
damage
insulated
parts
3)
Replacement
procedure
(1)
Remove
the
old
connector
by
cutting
the
wires
at
8
point
close
to
the
connector
Important
:
Do
not
reuse
a
cOnnector
(discard
it).
524
\lz
S
ho.
10
connector
Fig.
3
(2)
Strip
about
15
mm
of
the
insulation
from
the
ends
of
the
wires.
tf
the
wires
are
stranded,
twist
the
strands
to
avoid
frayed
conductors.
15
mm
2
Fig.
4
(3)
Align
the
lengths
of
the
wires
to
be
connected.
Insert
the
wires
fully
into
the
connector
Metal
sleeve
Connector
Fig.S
(4)
As
shown
in
Fig.
6,
use
the
crimping
tool
to
crimp
the
metal
Sleeve
at
the
center
position.
Be
sure
to
crimp
fully
to
the
complete
closure
of
the
tool.
eS
hey
Cr
20
3
Fig.
6
(5)
Check
the
four
points
noted
in
Not
easily
pulled
free
Wire
insulation
recessed
more
than
4
mm
Fig.
7
imping
tool
Fig.
7.
Crimped
at
approx.
center
of
metal
sleeve
Conductors
extended
SECTION
1
DISASSEMBLY
1.4
DISASSEMBLY
FLOW
CHART
This
flowchart
lists
shows
the
disassembly
steps
for
the
cabinet
parts
and
P.C.
boards
in
order
to
gain
access
to
item(s)
to
be
serviced.
When
reassembling.
perform
the
step(s)
in
reverse
order.
Bend,route
and
dress
the
flat
cables
as
they
were
originally.
@
Top
cover
¢
Bottom
cover
[=
28
J
[Front
panel
assembly
7
©
©
®
SW/JACK
&
SW/DISPLAY
board
assemblies]
1.3
DISASSEMBLY/ASSEMBLY
METHOD
PART
NAME
TOP
COVER
5(St)
—}-
@
|
BOTTOM
COVER
O2
|
(S2},
7(L1}
©)
FRONT
PANEL
ASSEMBLY|
D3
|
7121,
°JOG/SHUTTLE
[NOTE1>
(J636MS)
eeeremeees
bec
ao
SW/JACK
&
SW/DISPLAY|
D4
1
12(L3),°CN1201
|<NOTE2>
BOARD
ASSEMBLIES
i
*CN1204
©)
|
CASSETTE
HOUSING
|
D5
|
2(S3)
,2(S4)
ASSEMBLY
Cassette
housing
assembly
|
ey
Shield
case
©
©
®@
DRUM
assembly
>)
Main
deck
assembly
@
1.2
HOW
TO
READ
THE
DISASSEMBLY
AND
ASSEMBLY
Main
board
assembly
PART
NAME
TOP
COVER
BOTTOM
COVER
{$2),
7{L1)
1
FRONT
PANEL
ASSEMBLY
|
D3
}
7(L2),*JOG/SHUTTLE
|
<NOTE
1>
(J636MS)
+
+
+
SW/JACK
&
SW/DISPLAY
|
D4
|
12(L3),°CN1201,
|
<NOTE
2>
®
®
®
BOARD
ASSEMBLIES
*CN1204
®
©
+
CASSETTE
HOUSING
|
DS
j
2(S3),2(S4)
ASSEMBLY
;
4
am
SHIELD
CASE
D6
}
2(S5),*CN1
a
(1)
(2)
{3}
(4)
(5)
(1)
Order
of
steps
in
Procedure
When
reassembling,
perform
the
step(s)
in
the
reverse
order.
These
numbers
are
also
used
as
the
identification
(location)
NO.
of
parts
Figures.
(2)
Part
name
to
be
removed
or
installed.
(3)
Fig.No.
showing
procedure
or
part
location
(4)
Indentification
of
part
to
be
removed,
unhooked,
unlocked,
released,
unpluged,unclamped
or
unsoldered.
P
=
Spring,
W
=
Washer,
S
=
Screw,
L
=
Locking
tab,
*
=
Unhook,unlock,
release,
unplug
or
unsolder.
(5)
Adjustment
information
for
installation
+—
SHIELD
CASE
06
+—
DRUM
ASSEMBLY
D7
|
3(S6),WRI,
MAIN
DECK
ASSEMBLY
|
D8
|
2(S7),.WR2
WR3,2(L4),°CN703
OI
MAIN
BOARD
ASSEMBLY
|
D9
|
2(S8)
<NOTE1>
When
reattaching
the
front
panel
assembly,
make
sure
that
the
door
opener
(@)
of
the
cassette
housing
assembly
is
low-
ered
in
position
prior
to
the
reinstallation.
<NOTE2>
When
plugging
the
connector
in,
check
that
the
flat
wire
is
inserted
properly
and
fully.
<NOTE3>
When
reattaching
the
cassette
housing
assembly,
pay
careful
attention
to
the
switch
lever
not
to
make
it
touch
the
REC
switch
knob
of
the
REC
SAFETY
board
assembly
from
the
upside.
;
(If
the
REC
switch
knob
of
the
REC
SAFETY
board
assembly
is
damaged,
cassette
loading
is
impossible.)
<NOTE4>
When
plugging
the
connector
in,
check
that
the
flat
wire
is
inserted
properly
and
fully.
<NOTE5>
*
When
removing
the
Main
deck
assembly
only,
unhook
the
two
spacers
connecting
it
with
the
Main
board
assembly
with
pliers
from
the
back
side
of
the
Main
board
assembly
first,
and
then
remove
the
Main
deck
assembly.
«
When
reattaching
the
Main
deck
assembly
to
the
Main
board
assembly,
make
sure
to
set
the
spacers
into
the
retaining
slots
respectively.
11
tt
<A
ROLE
LC
CE
LICE
LCC
ACCC
LO
AL
CT
LL
AE
ETT
RT
DT
TR
TT

Fig.
01
THE
FRONT
SIDE
FOIL
SIDE
Fig.
D3
(S3)
THE
FRONT
SIDE
FOWL
SIDE
Fig.
D7
Fig.
D2
Fig.
D4
Fig.
D8

Fig.
D9
1.4
CASSETTE
HOUSING
INSTALLATION
NOTE:
Observe
the
mechanical
phase
and
position
(see
figure)
when
installing
the
cassette
hous-
ing
assembly.
If
these
are
incorrect,
the
system
will
not
operate
properly
even
when
tape
is
inserted.
1.
Check
that
the
hole
of
the
control
cam
are
aligned
to
the
deck
hole.
!f
necessary,
turn
the
loading
motor
belt
by
hand
to
adjust
the
position.
Loading
Motor
Belt
Pinch
Plate
Hole
align
with
hole
in
deck
14
1.5
SERVICE
POSITION
1.5.1
How
to
take
out
the
Mechanism
and
Main
board
assemblies.
(1)
Remove
the
Top
cover,
Front
panei
assembly,
CN1201
and
CN1204
of
the
SW/DISPLAY
and
SW/JACK
board
assemblies.
(2)
Take
out
4
screws
@>.
2
screws
(@
and
1
screw
(C)
as
shown
in
Fig.1-5-17.
|
CN1204
Sg
mn
Fig.
1-5-1
(3)
Remove
the
Mechanism
assembly
(including
Cassette
housing)
and
Main
board
assembly
out
of
the
chassis
as
shown
in
Fig.
1-5-2.
(5)
Turn
over
the
Mechanism
assembly
and
Main
board
assembly
then
connect
CN1201and
CN1204
of
the
SW/
DISPLAY
and
SW/JACK
board
assemblies.
(8)
Carry
out
checke
&
rapaire
as
nocessary
at
shown
in
Fig.1-5-3.
Note:
When
input
the
AUDIO/VIDEO
signal
from
connector,
connect
CN1204
of
the
SW/JACK
board
assembly.
(HR-J636MS
only)
SW/JACK
board
assembly
REC
SAFETY
board
assembly
CASSETTE
SWITCH
board
assembly
SW/DISPLAY
board
assembly
Fig.
1-5-3
1.5.2
Cautions
on
cassette
loading
when
mechanism
is
in
service
position
The
REC
SAFETY
board
assembly
of
this
set
serves
both
for
detecting
the
safety
tab
(erasure
prevention
tab)
of
a
cas-
sette
and
detecting
a
cassette
loaded.
Therefore,
cassette
loading
in
the
condition
that
the
mechanism
is
disassembled
from
the
set
needs
manual
operation
of
the
switches
of
the
REC
SAFETY
board
assembly
and
the
CASSETTE
SWITCH
board
assembly.
1.5.3
Cassette
loading
and
ejecting
procedures
when
mechanism
is
in
service
position
(1)
Insert
a
cassette
tape
halfway
into
the
cassette
housing
assembly.
(2)
Press
the
switch
of
the
REC
SAFETY
board
assembly
to
turn
on.
(3)
When
the
cassette
loading
begins
and
the
cassette
goes
down
to
the
bottom,
immediately
press
the
switch
of
the
REC
SAFETY
board
assembly
to
turn
off
and
hold
the
sta-
tus
that
the
switch
of
the
CASSETTE
SWITCH
board
as-
sembly
is
turned
on.
(Fix
the
switch
with
adhesive
tape
or
put
a
screwdriver,
etc.
on
it
to
leave
the
switch
in
the
ON
status.)
(4)
In
this
status,
desired
operations
(recording,
playback,
fast
forward,
rewind,
etc.)
can
be
performed.
Note:
When
the
mechanism
is
in
the
service
position,
the
safaty
tab
of
cassette
tape
is
not
detected
and
record-
ing
on
cassette
tapes
without
safety
tab
is
possibie.
Therefore,
carefully
choose
a
cassette
tape
for
op-
eration
in
this
mode
so
as
to
avoid
using
cassette
tapes
of
important
recording.
(5)
For
ejecting
the
cassette
in
this
status,
do
it
in
the
reverse
order
of
cassette
loading
mentioned
above.
Note:
/f
the
manual
operation
REC
SAFETY
switch
timing
is
incorrect,
the
cassette
may
be
completely
or
par-
tially
ejected,
and
the
cassette
is
often
ejected
incom-
pletely.
in
such
a
case,
it
is
possible
to
take
out
the
cassette
by
hand.
If it
is
desired
to
load
a
cassette
again
after
the
cassette
is
ejected
in
the
above
procedure,
make
sure
to
set
the
tray
of
the
cassette
housing
assembly
in
the
frontmost
position
prior
to
loading
the
cassette
once
again.
1-5

1.5.4
Opening
on
the
chassis.
The
chassis
assembly
has
openings
for
easy
access
to
the
checkpoints
and
connector
pins
as
shown
in
Fig.1-5-4.
peceee
Fig.
1-5-4
Rotary
Encoder
,
SPACER
@
TP1101
CTL
P.
TP333
A.ERASE
TP334
F.ERASE
1.6
MECHANISM
SERVICE
MODE
This
medel
has
2
unique
function
tw
enter
the
meshenism
into
every
operation
mode
without
loading
of
any
cassette
tape.
This
function
is
called
the
"MECHANISM
SERVICE
MODE".
1.6.1
How
to
set
the
"MECHANISM
SERVICE
MODE"
(1)
Disconnect
VCR
from
AC.
{2)
Remove
the
Top
cover,
Front
panel
assembly
and
cassette
housing
assembly.
(See
Page
1-2,
1-3)
(3)
Connect
TP1202
(GND)
and
TP1201
(TEST)
on
the
SW/
DISPLAY
beard
assembly
with
9
jume
wire
(4)
Connect
VCR
to
AC.
(5)
Press
the
POWER
button.
(6)
Select
the
desired
operation
modes
with
the
operation
buttons
or
remote
controller.
TERMINAL
board
assembly
sal
TP334
F.
ERASE
IF
board
mii
DEMOD
board
assembly
PDC
board
assembly
|
an)
SW/
JACK
board
assembly
c
REC
SAFETY
board
assembly
TEST
SW/DISPLAY
board
assembly
CASSETTE
SW
board
assembly
Fig.
1-6-1
1-7

1.7
EMERGENCY
DISPLAY
FUNCTION
This
product
has the
function
to
store
the
last
two
previous
emergency
faults
which
can
be
displayed
in
the
FDP
when
servicing.
1.7.1
How
to
display
record
of
an
emergency
faults
(1)
Press
"N"
button
of
the
presetting
unit
more
than
2
seconds.
and
the
two
previous
emergency
faults
are
shown
in
the
FDP.
(2)
Press
"N°
button
of
the
presetting
unit
again
when
return
the
norma!
mode.
[Example]
E:01:03
a
Emergency
faults
before
last
Emergency
faults
of
the
last
time
Example}
E:——:—-—
+No
record
of
emergency
1.7.2
Detail
of
emergency
faults
1.7.3
How
to
clear
emergency
record
Press
the
COUNTER
RESET
button
on
the
remote
contro+
ler
in
the
emergency
record
display
mode,and
the
record
of
the
emergency
fauit(s)
is
cleared.
without
shift
to
next
mode.
TU
REEL
FG
input
is
absentifor
more
than
4
Sec)
DRUM
FF
input
is
absentifor
more
than
3
Sec)
[i
ed
FDP
Symptom
Detect
mode
Resulting
mode
+
£:01
|
Loading
motor
rotates
for
more
than
8
Sec
Loading
POWER
OFF
;
without
shift
to
next
mode.
+
4-
i
E:02
Loading
motor
rotates
for
more
than
8
Sec
Unloading
POWER
OFF
REC/PLAY/FF/REW
SEARCH
FF/SEARCH
REW
STOP
-»
POWER
OFF
REC/PLAY/FF/REW
SEARCH
FF/SEARCH
REW
E£:06
CAPSTAN
FG
input
is
absentifor
more
than
1
Sec)|}
REC/PLAY/FF/REW
STOP
—-
POWER
OFF
mi
SEARCH
FF/SEARCH
REW
st
E.07
No
SWD5V/12V
POWER
ON
POWER
OFF
ee
Table
1-7-1
EMERGENCY
FAULTS
SECTION
2
MECHANISM
ADJUSTMENT
2.1
PREPARATION
2.1.1
Precautions
{1}
Disconnect
VCR
from
AC
power
before
soldering.
(2)
Avoid
imparting
stress
to
wires
when
disengaging
con-
nectors.
(3)
Determine
and
correct
the
cause
of
difficulty
before
pro-
ceeding
to
adjustments.Do
not
disturb
settings
unnecessarily.
(4)
Use
care
not
to
damage
tabs,claws,etc
during
repairs.
(5)
Install
the
cassette
housing
assembly
only
when
the
mechanism
is
in
the
MECHANISM
ASSEMBLING
MODE
position.
(6)
When
installing
the
Front
panel
assembly,be
sure
to
engage
the
housing
door
with
the
door
opener
of
the
cassette
housing
assembly.
If
this
is
omitted,the
cassette
door
will
not
open
at
Eject
and
the
cassette
can
not
be
removed.
(See
SECTION
1
DISASSEMBLY.)
2.1.2
Check
without
cassette
housing
assembly.
Mechanism
operations
can
be
observed
easily
by
removing
the
cassette
housing
assembly.
Use
the
MECHANISM
SERVICE
MODE.
(See
SECTION
1
DISASSEMBLY.
)
2.1.3
Manual
removal
of
loaded
tape
When
the
deck
enters
the
emergency
mode
with
cassette
tape
loaded
and
it
can
not
be
ejected
by
pressing
the
EJECT
button,
take
out
of
the
cassette
tape
according
to
the
follow-
ing
procedure.
(1)
Disconnect
the
power
cord
from
AC
outlet
then
take
out
the
Top
cover
and
Front
panel
assembly.
(2)
Turn
the
loading
motor
on
the
Main
deck
assembly
by
hand
in
the
unloading
direction
to
where
the
pole
base
assembly
(supply
and
take-up)
is
positioned
below
the
cassette
tape.At
that
time,
pay
careful
attention
to
the
tape
not
to
get
soiled
with
grease.
(3)
Take
out
4
screws
of
the
cassette
housing
assembly.(See
SECTION
1
DISASSEMBLY.
}
(4)
Remove
the
cassette
housing
with
slackened
tape
and
guard
panel
of
cassette.
(5)
Wind
up
the
tape
by
turning
the
reel
hub(either
supply
or
take-up
side
for
convenience)
from
the
bottom
of
the
cassette,and
remove
the
cassette
tape.
Loading
Motor
Pole
Base
Assembly
-
Guide.
Arm
Assembly
Fig.
2-1-1
2-1
fo
ea
tn
mea
SNR
eA
AA
A
eA

2.1.4
Test
Equipment
Ee
Alignment
tape
(LP)
Back
tension
cassette
gauge
AC
head
positioning
tool
MHPE-L
PUJ48076-2
PTU94010
a
Algnment
tape
(SP}
MHPE
PTU94002
PTU94008
KYODO-SH-P
AO
|
—
Roller
driver
i
Presetting
unit
Grease
r
Table
2-1-1
Test
equipment
2.2
MAIN
MECHANISM
PARTS
Drum
Assembly
A/C
Head
Stator
Assembly
Capstan
Motor
Loading
Motor
Guide
Rail
FE
Head
YY
at
i
—
Belt
(Loading
Motor)
40
;
f
Pinch
Roller
Arm
Assembly
Guide
Arm
Assembly
C}-Lever
Assembly
Control
Plate
Control
Cam
s-
Change
Lever
Assembly
|
Ek
pa
AS
|e
ee
Tension
Band
Assembly
Se
Slide
Piate
Slit
Disk
Pole
Base
Assembly
Slit
Disk
(SUP)
(TU)
(TU)
Fig.
2-2-1
Top
view
of
main
deck
2-2
(a
EEE
i,
(CGleoa
10)
aay
Belt
(Capstan}
Fig.
2-2-2
Bottom
view
of
main
deck
2.2.1
Cleaning
Periodic
cleaning
of
the
tape
transport
system
is
desirable,
but
usually
not
feasible
in
practice.
Therefore,perform
cleaning
when
a
set
is
brought
in
for
repairs
or
maintenance.
Con-
tamination
of
the
video
heads,tape
guides
and
brush
can
detract
from
playback
picture
quality
and
in
extreme
cases,even
damage
the
tape.For
cleaning,use
a
finemesh
cotton
clothiabout
the
texture
of
a
white
dress-shirt)
mois-
tened
in
alcohol.
It
is
recommended
to
also
clean
thetape
tension
posts
and
capstan.
*
To
clean
the
video
heads,
press
the
moistened
cloth
gently
against
the
upper
drum
with
fingertip
and
turn
the
drum
by
hand.
¢
Do
not
use
a
vertical
stroke,as
this
may
damage
the
heads.
2.2.2
Lubrication
Oil
and
grease
do
not
normally
require
periodic
replenishing.
Apply
only
when
replacing
lubricated
partslaiso
clean
and
replace
lubrication
of
mating
parts
if
soiled).
For
parts
and
points
to
apply
oil
and
grease,
refer
to
the
exploded
views
of
the
mechanism
assembly.
Before
oiling,clean
with
alcohol.
Apply
one
or
two
drops
of
oil.
Avoid
excess
oil.
1.
Table
2-2-1
indicates
the
oil
and
grease
used
in
this
set.
Use
these
or
recommended
locally
available
equivalents.
Oil
COSMO-HV56
Grease
KYODO-SH-P
Table
2-2-1
2.
Grease
is
not
required
for
a
replacement
cassette
hous-
ing
assembly,as
this
has
been
applied
at
the
factory.
NOTE:
Stir
grease
that
has
been
stored
for
an
extended
period.
2:3

2.3
INSPECTION
AND
MAINTENANCE
This
product
employs
rotary
and
moving
parts
which
wear
out
in
the
course
of
usage.
Periodic
inspection,
cleaning,
lu-
brication
and
maintenance
are
therefore
important
for
ensur-
ing
maximum
performance.
Worn
parts
must
aiso
be
re-
placed
as
and
when
required.
2.3.1
Suggested
servicing
schedule
for
main
components
The
following
table
indicates
the
suggested
period
for
such
service
measures
as
cleaning,lubrication
and
replacement
'n
practice,
the
indicated
periods
will
vary
widely
according
to
environmental
and
usage
conditions.
However,
the
indi-
cated
components
should
be
inspected
when
a
set
is
brought
for
service
and
the
maintenance
work
performed
if
necessary.
Also
note
that
rubber
parts
may
deform
in
ume,even
if
the
set
is
not
used.
System
t
Tape
transport
Drive
Other
Parts
Name
Operation
Hours
L
\
~1000H
|
~2000H
|
Upper
drum
assembly
KO
i
©
if
AC
head
KO
|
*O
{Lower
drum
motor
assembly
|e
KO
Pinch
roller
arm
assembly
a
|
*
Full
erase
head
|
*
x
|
Tension
arm
assembly
i
*
|
*
Guide
arm
assembly
i
o*
*
Capstan
motor
=|
O
Belt
(Capstan)
i
O
O
Belt
(Loading
motor)
O
Loading
motor
O
Slit
disk
(supply,
take-up)
O
Clutch
unit
(supply,
take-up)
O
Worm
gear
assembly
O
Control
piate
2
;
EKG
Slide
plate
|
ae.
|
Brush
assembly
7
i
AO
1
KO
Tensionbandassembly
|
OQ
|
©
Rotary
encoder
O
|
%
:
Cleaning
C;
:
Inspection
or
Replacement
if
necessary
Table
2-3-1
24
2.4
DISASSEMBLY/ASSEMBLY
PROCEDURE
OF
MECHANISM
2.4.1
Precaution
before
disassembling
mechanism
This
mechanism
has
an
exclusive
operation
modo
provided
for
disassembling
and
installation
of
the
mechanism
(MECHANISM
ASSEMBLING
MODE),
and
it
is
suggested
lo
set
the
mechanism
to
this
mode
before
disassembly
and
installation
The
exclusive
mechanism
operation
mode
is
not
generally
used
and
becomes
available
by
manuai
setting
only.
Then
this
procedure
starts
with
the
condition
that
the
cabi-
net
parts,cassette
housing
assembly
and
PRE/REC
board
assembly
have
been
removed.
2.4.2
How
to
set
the
exclusive
mechanism
operation
mode
(MECHANISM
ASSEMBLING
MODE)
(1)
Turn
the
loading
motor
belt
by
hand.
(2)
Confirm
that
the
hole
of
the
control
cam
are
aligned
to
the
deck
hole
as
shown
in
Fig.2-4-1.
Loading
Motor
Belt
oe
tl
1+
|
Hole
align
with
hole
in
deck
Control
Cam
Fig.
2-4-1
2.5
MAIN
PARTS
REPLACEMENT
OF
MECHANISM
2.5.1
Pinch
Roller
Arm
Assembly
(1)
Remove
the
slit
washer.
(2)
Tilt
up
the
pinch
roller
assembly
in
direction
of
arrow.
Slit
Washer
Pinch
Roller
Arm
Assembly
2.5.2
A/C
Head
1,
Removal
{1}
Take
out
2
screws
(A).
(2)
Remove
the
A/C
head
with
head
base.
Head
Base
(A)
Fig.2-5-2
(3)
When
replacing
the
A/C
head
only,remove
3
screws
(B),
use
Care
not
to
misplace
the
3
springs.
(B)
AIC
Head
’
Board
AIC
Head
Zo
7
s
Head
Base
ow
&
eo
SS
Fig.2-5-3
2.
‘Installation
(1)
Temporarily
set
AYC
head
height
as
indicated
in
Fig.
2-54.
A/C
Head
gus
/
Fig.2-5-4
NOTES:
*
It
is
very
important
to
correctly
adjust
the
control
pulse
and
audio
signal
in
addition
to
the
mechanical
tape
path.
*
Perform
interchangeability
adjustments
after
electrical
ad-
justments,
2.5.3
Pinch
Plate
1.
Removal
1)
Disengage
2
claws,
then
remove
the
pinch
plate.
f
Pinch
Plate
Fig.2-5-5
2.
Installation
;
(1)
When
installing
pinch
piate,align
rack
of
pinch
plate
and
triangle
mark
of
control
cam
as
indicated
in
Fig.2-5-6.
Pinch
Plate
Control
Cam
Correct
direction
L
Fig.
2-5-6

2.5.4
Loading
Motor
(1)
Disengage
the
belt
between
loading
motor
and
worm
gear.
(2)
Take
out
2
screws
(A)
then
remove
the
loading
motor.
Red
Line
(to
CN703
Fig.2-5-7
2.5.5
Lever
Assembly,Sub
Deck
Assembly,Capstan
Motor
(1)
Take
out
1
slit
washer,then
remove
the
lever
assembly.
(2)
Disengage
the
belt(
capstan
motor)
from
bottom
of
mechanism
assembly
first
as
indicated
in
Fig.2-5-10.
(3)
Take
out
3
screws
(A)
and
remove
the
sub
deck
assembly
as
indicated
in
Fig.2-5-8.
(4)
Take
out
3
screws
(B)
and
remove
the
capstan
motor
trom
the
sub
deck
assembly
as
indicated
in
Fig.2-5-9.
(A)
Stit
Washer
Lever
Assembly
Fig.2-5-8
2-6
2.5.6
Control
Bracket-1
(1)
Take
out
1
screw
{A)
and
1
screw
(8).
(2)
Remove
the
control
bracket-1.
(B)
Sub
Deck
Assembly
eA
GK
Cty}
=)
A
cl
TY
Co
Capstan
Motor
Fig.2-5-13
Fig.2-5-9
Fig.2-5-11
2.5.7
Reel
Bracket,Slit
disk
(take-up),Control
Bracket-2
2.5.8
Control
Plate
(1)
Take
out
2
slit
washers.
(1)
Take
out
1
slit
washer.
(2)
Remove
the
reel
bracket
and
slit
disk(take-up).
(2)
Disengage
2
claws
and
remove
the
contro!
plate.
(3)
Take
out
1
screw
(A)
and
remove
the
control
bracket-2.
Slit
Washer
Control
Plate
Fig.2-5-10
Fig.2-5-14
2-7

2.5.12
Sub
Brake
(supply),
Tension
Band
Assembly,
Tension
i
beacaes
ane
revert
ie
Daren
ee
Ally
See
Lever
Assembly,Slit
(4)
Remove
the
tension
arm
assembly
with
tension
band
brake
(take-up).
iskisupp!
vy)
assembly.
2}
Disengage
1
claw
and
remove
the
control
cam.
(1)
Disengage
1
spring
(a).
(5)
Disengage
1
spring
(b)
and
remove
the
take-up
lever
(2)
Disengage
1
claw
and
remove
the
sub
brake
(supply).
assembly.
{3)
Take
out
1
screw
(A),
spring
(c)
and
slit
washer.
{6)
Remove
the
slit
disk(supply).
re
——
Take-up
Lever
~®
Fig.2-5-15
2.5.10
Slide Plate
(1)
Disengage
7
claws
from
bottom
of
the
mechanism
assembly
and
remove
the
slide
plate.
Fig.
2-5-16
28
Slide
Plate
Fig.
2-5-17
2.5.11
Change
Lever,Rotary
Encoder
(1)
Remove
the
change
lever.
(2)
Disengage
2
claws
and
remove
the
rotary
encoder.
Rotary
Encoder
Align
the
triangle
marks
Change
lever
Assembly
Tension
Arm
Assembly
Slit
washer
Tension
Band
Assembly
(A)
Fig.
2-5-19
2.5.13
Take-up
Head,Tension
Arm
Lever
(1)
Remove
the
take-up
head
and
tension
arm
lever.
Sub
Brake
(SUP)
Tension
Arm
Lever
Fig.2-5-20
2-9

2.5.14
Guide
Rail
{1)
Take
out
5
screws
(A)
and
1
screw
(B).
{2)
Disengage
4
claws
and
remove
the
guide
rail.
Fig,
2-5-21
2-10
2.5.15
Stator
Assembly
(1)
Take
out
2
screws
{A).
(2)
Raise
the
stator
assembly
in
the
direction
indicated
by
the
arrow
to
remove
it.
(3)
Remove
the
flat
cable.
(4)
To
reinstall,
first
secure
the
flat
cable,then
insert
2
screws
(A).
(5)
After
reinstating,
be
sure
to
perform
PB
switching
point
adjustment(See
SECTION
3
ELECTRICAL
ADJUST-
MENT).
(A)
8
,
THE
FRONT
SIDE
|
|
a
Fiat
Cable
THE
FRONT
SIDE
“FOIL
SIDE
Fig.
2-5-22
NOTE
:
When
refitting
the
connector,
check
that
the
flat
wire
is
inserted
correctly.
2.5.16
Rotor
Assembly
(1)
Remove
the
stator
assembly.
{2)
Take
out
2
screws
(B)
and
remove
the
rotor
assembly.
Fig.2-5-23
(3)
Align
the
upper
dum
assembly
and
rotor
assembly
phase
as
indicated
in
Fig.2-5-22.
(4)
Overlap
holes
(a)
of
the
upper
drum
assembly
with
holes
(b)
of
the
rotor
assembly
{align
holes
in
3
locations)
and
secure
with
2
screws
(B)
as
indicated
in
Fig.2-5-21.
~
——-
%:Hole
not
in
straight
line
toward
the
right
{b)
Fig.
2-5-24
2.5.17
Upper
Drum
Assembly
14.
Removal
{1)
Remove
the
stator
assembly
and
rotor
assembly.
(2)
Use
a
1.5
mm
hexagonal
wrench
to
loosen
the
collar
assembly
screw
and
remove
the
collar
assembly.
(3)
Remove
the
upper
drum
assembly
and
use
tweezers
to
remove
the
Washer.
Collar
Assembly
Washer
~
aly
Brush
—an
fei!
“0
PS
|
ae
|
.
eh
Fig.
2-5-25
NOTE:
/f
the
Brush
is
replaced,
do
not
apply
the
grease
to
the
contacts.
2.
Installation
(1)
Use
an
air
brush
to
cloan
the
lawar
drum
aceambly
and
the
coil
section
of
the
new
upper
drum
assembly.
(2)
Set
a
new
washer
on
the
drum
shaft
as
indicated
in
Fig.2-
5-25.
NOTE:
Be
sure
to
use
the
new
washer
when
replace
the
upper
drum
assembly.
Fig.2-5-26
(3)
Note
the
top
and
bottom
of
the
collar
assembly
and
de-
termine
the
position
as
indicated
in
Fig.2-5-25.
Fig.2-5-27
2-13

(4)
While
pressing
the
collar
assembly
evenly
from
above
with
your
fingertips,
secure
the
hexagonal
screw.
a
ss
Fig.2-5-28
(5)
After
installing,gently
turn
the
upper
drum
by
hand
and
confirm
normal
rotation.
(6)
Install
the
rotor
assembly
and
stator
assembly.
(7)
Clean
the
upper
and
lower
drum
assemblies
and
perform
the
following
adjustments;
¢
PB
switching
point
adjustment
©
Slow
tracking
preset
adjustment
¢
Interchangeabiiity
adjustment
(
be
sure
to
check
LP
mode)
Loading
Arm
Assembly
with
hole
in
deck
2.6
CHECKUP
AND
ADJUSTMENT
OF
MECHANISM
PHASE
2.6.1
Precaution
The
rotary
encoder
and
syscon
circuit
are
ciosely
interrelated.
Therefore,the
rotary
encodes
and
contro!
cam
conection
determines
the
operations
of
mechanical!
parts
such
as
plates,gears,brakes,etc.Correct
positioning
of
these
parts
is
essential
for
smooth
tape
loading
and
mechanical
operations.
2.6.2
Loadidg
Arm
Assemby
(supply,take-up)
(1)
Install
the
supply
loading
arm
assembly
and
the
take-up
loading
arm
assembly
So
that
their
positioning
markings
on
the
respective
gear
face
each
other
and
the
holes
of
their
arms
correspond
to
the
holes
on
the
main
deck
assembly
respectively.
After
setting
the
guide
rails,engage
the
pole
base
assemblies
with
the
tip
of
the
loading
arms
respectively.
Then,enter
the
mechanism
into
the
unloading
mode
to
return
the
poie
base
assemblies
to
the
front
position.
Reassemble
the
peripheral
parts
of
the
guide
rail
to
its
original
position.
(2
3
To
Pole
Base
Assembly(SUP)
To
Pole
Base
Assembly(TU)
ae
Loading
Arm
Assembly
(SUP)
A
of
(Tu)
Holes
align
f
Holes
align
with
hole
in
deck
\
Fig.
2-6-1
2-12
eee
ener
se
An
AIT
RET
RS
ONE
CRE
PICEA
ACETONE
rn
Ra
ate
tere
ans
<mamns
eneanS
crema
ae
enemies
renee
2.6.3
Rotary
Encoder,Change
Lever,Control
Cam
(1)
When
reinstalling
the
rotary
encoder,
adjust
its
position
so
as
to
fit
the
triangle
marks
each
other
and
push
it
deep
until
it
is
locked
Dy
the
pawis.
(2)
When
reinstalling
the
change
lever,set
it
so
as
to
make
its
positioning
hole
correspond
to
the
hole
of
the
main
deck
assembly.
(3)
When
re-engaging
the
control
cam,!ower
the
capstan
brake
assembly
while
setting
it
so
as
to
make
its
positioning
hole
correspond
to
the
hole
of
the
main
deck
assembly.
Rotary
Encoder
Claw.
Align
the
—,
triangle
marks
([?
Holes
align
with
hole
in
deck
Fig.
2-6-2
Capstan
Brake
Assembly
Turn
the
Capstan
Brake
Assembly
counter
clockwise
Holes
align
with
hole
in
deck
Control!
Cam
Fig.
2-6-3
2.6.4
Slide
Plate
(1)
Lower
both
the
main
brake
assemblies
(supply
and
take-
up)
untill
they
toueh
the
edge
of
tha
AAais
Baek
BASBENIN)
white
reinstating
tag
sug
pPlatG
uy
ee
te
mane
Te
respective
positioning
holes
of
the
main
brake
assembiies
correspond
to
the
holes
on
the
main
deck
assembly.
Main
Brake
Assembly(SUP)
\
Main
Brake
Assembly(TU)
Fig.2-6-4
2.6.5
Control
Plate
(1)
Reinstall
the
control
plate
so
as
to
set
the
two
position-
ing
holes
of
it
on
the
holes
on
the
main
deck
assembly
respectively
and
to
set
the
positioning
hole
of
the
take-
up
lever
on
the
hole
of
the
main deck
at
the
same
time.
When
adjusting
the
hole
position
of
the
take-up
lever,use
a
pair
of
tweezers
to
hold
and
move
it
since
it
is
pulled
by
a
tension
spring.
After
reinstalling
the
control
plate,fix
it
with
the
slit
washer,control
bracket-1
and
-2.
(2
Holes
align
with
holes
in
deck
Control
Plate
Hole
of
Take-up
Lever
align
with
hole
in
deck
Slit
Washer
Fig,
2-6-5
2:13
ene
emanation
teeta
ieee
enaiennbenneemneatneementemineneneneninn
ate
penne
enantio

2.7
TAPE
INTERCHANGEABILITY
ADJUSTMENT
NOTE
:
¢
This
adjustment
is
extremely
important.
However,
it
is
normally
not
required
during
routine
service.
Perform
only
after
replacing
major
components(A/
C
head,upper/lower
drum
assembly,pole
base
assembly,
etc).
*
Before
using
costly
alignment
tape,use
a
spare
tape
and
confirm
correct
operation
of
the
tape
transport.
2.7.1
Tape
pattern
(1)
Connect
the
oscilloscope
to
TP106(PB
FM)
on
the
Main
board.Use
TP111(D.FF)
on
the
Main
board
as
a
trigger.
(2)
Playback
the
SP
stairstep
portion
of
the
alignment
tape
([MHPE].Confirm
that
the
FM
waveform
appears
as
in-
dicated
in
Fig.2-7-1.
(3)
Set
the
manual!
tracking
position
by
pressing
the
///
button
on
the
remote
controller
or
TV
PROG
°-"
and
"+’
buttons
simultaneously.
(4)
Operate
the
tracking
adjustment
(press
the
TV
PROG
buttons
during
playback)
and
set
for
maximum
play-
back
FM
waveform.
(5)
By
operating
the
TV
PROG
button,vary
the
FM
waveform
from
maximum
to
minimum
and
vice
versa
to
confirm
that
the
waveform
varies
nearly
in
a
flat
shape
as
shown
in
Fig.2-7-1.
(6)
When
the
FM
waveform
does
not
remain
flat
during
this
process,first
slightly
loosen
the
set
screw
located
at
the
bottom
of
the
guide
rollers.Using
the
guide
roller
adjustment
tool
(Roller
driver)
,adjust
the
supply
and
take-up
guide
rollers
(refer
to
Fig.2-7-2)
to
obtain
the
correct
waveform
as
indicated
in
Fig.2-7-3.
(7)
By
pressing
the
TV
PROG
buttons
several
times,
vary
the
FM
waveform
output
from
maximum
to
minimum
(and
vice
versa)
gradually,and
confirm
that
the
variation
proceeds
in
flat
shape,
as
shown
in
Fig.2-7-3.
(8)
Next
playback
the
LP
stairstep
portion
of
the
alignment
tape
[MHPE-L]
and
adjust
the
tracking
control
from
maximum
to
minimum
the
FM
waveform,confirm
that
FM
waveform
variation
is
always
flat.
(9)
Record
the
signal
and
play
it
back
in
both
of
the
SP
and
LP
mode,confirm
that
the
FM
waveform
is
flat
in
both
mode.
(10)
After
adjustments,
tighten
the
set
screw
of
the
guide
rollers.
(11)
Confirm
that
the
tape
wrinking
does
not
occur
at
the
roller
upper
or
lower
limits
as
indicated
in
Fig.2-7-4.
TTR
TE
—=—
Maximum
level
Minimum
level
Normal
waveform
examples
ANT
oa
wy,
i
—
(inset
CT
iII«,»,
7
incorrect
waveform
examples
Fig.
2-7-1
Adjust
Roller
driver
Hex
wrench
Loosen
Guide
Roller
cm
it
SINE
wen
side
rs
i
na
t
i
i}
1
i
1
i}
1
=
{iin
ake-up
side
+
Correct
variation
of
the
waveform
(
always
fiat)
ee
Ee
+
Bad
variation
of
the
waveform
Raising
Failing
AT
~
jaamopa
Fig.
2-7-3
Incorrect
Correct
WOWoed
(a)
Guide
Roller
tide]
(b)
Guide
Pole
Fig.
2-7-4
2.7.2
A/C
head
height
&
azimuth
NOTE.
©
(GIMIPOIally
S06
AUC
NGA
NOTH
AF
ARCAOT
WF
Fig.
2-5-4.
¢
Use
spare
tape
to
check
the
transport
and
con-
firm
the
tape
is
not
scratched
or
damaged.
1.
Tilt
(1)
Use
spare
tape
and
set
for
playback.
(2)
Turn
screw
(3)
clockwise
to
where
the
tape
curls
just
slightly
at
the
TU
guide
pole
bottom
flange
as
shown
in
Fig.2-7-5.
(3)
Then
slowly
turn
screw
(3)
counterclockwise
to
where
the
curling
ceases.
2.
Height
(1)
Connect
CH-1
of
a
dual
trace
oscilloscope
to
Audio
Out.
(2)
Connect
CH-2
to
TP1101(
CTL
PULSE)
of
the
Main
board
assembly
and
use
the
ALT
mode.
(3)
Playback
the
SP
stairstep
portion
of
the
alignment
tape
IMHPE].
(4)
Adjust
screws
(1),(2}
and
(3)
for
maximum
audio
output
and
control
pulse
level.
3.
Azimuth
(1)
Connect
the
oscilloscope
to
Audio
Out.
(2)
Playback
the
SP
stairstep
portion
of
the
alignment
tape
[MHPE].
(3)
Adjust
screw
(2)
so
that
the
audio
output
is
both
maxi
mum
and
with
minimum
fluctuation.
Fig.
2-7-5
2-15

2.7.3
A/C
head
phase(X-value)
(1)
Connect
the
oscilloscope
to
TP106(PB
FM)
on the
Main
board.Use
TP111(D.FF}
on
the
Main
board
as
a
trigger.
(2)
Playback
the
SP
stairstep
portion
of
the
alignment
tape
IMHPE].
(3)
Set
the
neutral
manual
tracking
position
by
pressing
the
uf
Dutton
on
the
remote
controller
or
TV
PROG
*-*
and
“+*
buttons
simultaneously.
(4)
If
adjustment
is
required,slightly
loosen
screws
(4)
and
(5).
Set
A/C
head
positioning
toot
on
the
AVC
head
ad-
justing
boss
as
indicated
in
Fig.2-7-6.
(5)
Turn
the
tool
first
to
position
the
A/C
head
fully
toward
the
capstan.
Then
gradually
return
it
toward
the
drum
and
stop
at
the
position
of
maximum
FM
waveform
output
level
as
shown
in
Fig.2-7-7.
(6)
Tighten
screw
(5).
Remove
the
tool
and
tighten
screw
(4).
(7)
Eject
the
SP
alignment
tape
[MHPE]
and
then
re-insert
the
LP
alignment
tape
{MHPE-L].
(8)
Playback
the
LP
stairstep
portion
of
the
alignment
tape
IMHPE-L].
(9)
Set
the
neutral
manual
tracking position
by
pressing
the
suas
dutton
on
the
remote
controller
or
TV
PROG
‘-"
and
“+"
buttons
simultaneously.
(10)
Confirm
maximum
playback
FM
waveform
output
level
as
shown
in
Fig.2-7-7.
(11)
If
not
maximum,slightly
loosen
the
screws
(4)
and
(5).
Use
the
tool
and
adjust
the
head
position
for
the
near-
est
maximum
point.
Then
tighten
screws
(4)
and
(5).
A/C
Head
Positioning
Tool
A/C
Head
i
Fig.
2-7-6
2-16
SP
mode
stairstep
P
LP
mode
stairstep
Alignment
tape
Alignment
tape
FM
waveform
output
Drum
side
AIC
Head
position
Capstan
side
oe
—
t
Fig.
2-7-7
2.7.4
LP
mode
auto
tracking
NOTE
:
Set
VCR
to
the
mode
A
by
remote
controller.
(1)
Connect
the
oscilloscope
to
TP106(PB
FM}
on
the
Main
Board.
Use
TP111(D.FF)
on
the
Main
board
as
a
trigger.
(2)
Playback
the
LP
stairstep
portion
of
the
alignment
tape
IMHPE-LI.
(3)
Confirm
the
FM
waveform
of
the
oscilloscope
screen
until
auto
tracking
action
is
over.
(4)
Twice
press
button
"D"
of
the
presetting
unit
[PTU94008].
(5)
If
the
alignment
tape
ejects
automatically,repeat
the
A/
C
head
phase
adjustment
(X-value).
2.7.5
Tension
pole
position
(1)
Set
for
playback
mode
using
MECHANISM
SERVICE
MODE(See
SECTION
1
DISASSEMBLY}.
{2)
Slightly
loosen
the
screw
(A)
.
(3)
Turn
the
adjust
pin
so
that
the
tension
arm
assembly
does
not
touch
2.5
pole
on
the
outside.
(4)
Tighten
the
screw
(A).
(5)
After
adjustment,use
the
back
tension
cassette
gauge
and
set
for
the
playback
mode.
(6)
Confirm
reading
of
29
to
46
gecm.
Tension
Arm
Assembly
Fig.
2-7-8
2.7.6
Take-up
torque
(1)
Use
the
back
tension
cassette
gauge
and
set
for
the
play-
back
mode.
{2}
Confirm
reading
of
60
to
100
gecm.

SECTION
3
ELECTRICAL
ADJUSTMENT
3.1.
PRECAUTION
Electrical
adjustment
are
required
after
replacing
circuit
components
and
certain
mechanical
pans.
|1
is
important
to
perform
these
adjustments
only
after
all
repairs
and
replace-
ments
have
been
completed.
Aiso
do
not
attempt
these
ad-
justments
unless
the
proper
equipments
is
available.
3.1.1
Required
test
equipment
@
Colour
television
or
monitor
@
Oscilloscope:
wide-band,
dual-trace,
triggered
delayed
sweep
@
Frequency
counter
@
Digital
voltmeter
©
Signal
generator:
RF/F
sweep/maker
©
Signal
generator:
PAL/SECAM
colour
bar,
stairstep
@
Recording
tape
@®
Numeric-key
remote
controlier(provided)
3.1.2
Required
adjustment
tools
Alignment
tape
Presetting
unit
(SP
stairstep)
PTU94008
MHPE
3.1.3.
Colour
bar
signal,colour
bar
pattern
@
PAL
colour
bar
signal
White(100%)
White(75%)
&
|
2
0.7V
Burst
Vv
i
|
~Tosv
0.3V
ae
es
V
U
nee
V(R-Y)
U(B-Y)
Fig.3-1-1
PAL
colour
bar
signal
waveform
@
PAL
colour
bar
pattern
(75%)
Fig.3-1-2
PAL
colour
bar
pattern
@
SECAM
colour
bar
signal
waveform
Carrier(4.406
MHz)
=
Carrier(4.250
MHz)
_—_
Horizontal
sync
R-Y
colour
BAR
Fig.3-1-3
SEACM
colour
bar
signal
waveform
@
SECAM
colour
bar
pattern
Fig.3-1-4
SECAM
colour
bar
pattern
3.2
SERVO
CIRCUIT
Notes:
-
Uniess
otherwise
specified,all
measurement
point
and
adjustment
parts
are
located
on
the
MAIN
BOARD.
*
Set
VCR
to
the
mode
A
by
remote
controller.
+
Use
only
buttons
“O",
depressing
other
buttons
during
adjustment
may
cause
adjustment
er-
rors.
3.2.1
PB
switching
point
Signal
*
Alignment
tape
[MHPE],Stairstep
Mode
°PB
ee
|
=
*
Oscilloscope
Equipment
|
Measurement
point
Y
eorat
1-
pin
19
(VIDEO
OUT)
{TERMINAL
BOARD]
|
eae
Trigger
slope
(-)
©
TP111(ORUM
FF)
,
[PRE/REC
BOARD}
Adjustment
tool
Presetting
unit
[PTU94008}
2
ames
°6.5
2
05H
Specification
(1)
Connect
an
oscilloscope
to
J1411-
pn
19
(VIDEO
OUT
and
external
trigger
from
TP111
(negative
slope).
(2)
Playback
the
stairstep
signal
of
the
alignment
tape.
(3)
Press
the
“O”
button
of
the
presetting
unit.
(4)
The
adjustment
is
performed
automatically.
Once
the
adjustment
is
performed,
the
VCR
will
go
into
the
STOP
mode.
Fig.3-2-1
Presetting
unit
Switching
point
V.
sync
=.
——
65:10.5H
’
V.
rate
Fig.3-2-2
PB
switching
point
3.2.2
Siow
tracking
preset
¢
Tuner
or
colour
bar
Mode
—
eSP/LP,
REC
—+
PB(ISLOW
Equipment
¢TV-Monitor
*Presetting
unit
[PTU94008}
Adjustment
tool
Specification
©
Minimum
noise
Note
:
Set
VCR
to
the
mode
A
by
remote
controller.
Use
only
buttons
“B”
and
“C*,
depressing
other
buttons
during
adjustment
may
cause
adjustment
errors.
(1)
Record
a
colour
bar
signal
in
the
SP
mode.
(2)
Playback
recorded
signal
on
the
FWD
slow
mode.
(3)
Observe
the
display
on
the
TV
monitor
and
adjust
for
op-
timum
noise
condition
(best
tracking)
by
depressing
“B
“or
“C
“
buttons
of
the
presetting
unit.
(4)
Depress
the
STOP
button.
;
(5)
Confirm
that
the
bar
noise
is
not
visible
on
the
TV
moni-
tor
in
the
slow
mode.
(6)
Repeat
steps
(2)
to
(5)
in
the
LP
mode.
Fig.3-2-3
Presetting
unit
3-2

3.3.
VIDEO
CIRCUIT
Notes:
-
Unless
otherwise
specified,all
measurement
point
and
adjustment
parts
are
located
on
the
MAIN
BOARD.
+
Set
VCR
to
the
mode
A
by
remote
controller.
[aA
BC!
;Cocc
|
a
55|
Oar
|e
ni
|
jOCUO,
;
J
K
bk}
OO
ms,
;
MON
O
|
|
;OICIC
|
2
Wee
Shi
Sees
es
oe
Fig.3-3-1
Presetting
unit
3.3.1
Auto
picture
ae
|
|
Adjustment
tool
|
Specification
*
Monoscope
*REC
then
PB
*SP/LP
*
Presetting
unitIPTU94008)
*
STOP
mode
(1)
Record
a
monoscope
signal
in
the
SP
mode.
(2)
Playback
the
recorded
signal.
(3)
Press
the
“L”
button
of
the
presetting
unit
during
playback.
(4)
Confirm
that
VCR
wilt
go
into
the
STOP
mode.
(5)
Repeat
steps
(2)
to
(4)
in
the
LP
mode.
3.4
SYSCON
CIRCUIT
Notes:
»
Unless
otherwise
specified,ali
measurement
point
and
adjustment
parts
are
located
on
the
MAIN
BOARD.
*
When
perform
this
adjustment,remove
the
MECHANISM
assembly.
3-3
3.4.1.
Timer
clock
Signal
©
No
signal
Mode
eEE
Equipment
«
Frequency
counter
Measurement
point
j)
©
TP702
round{(SYS.CLK)
Adjustment
part
*©C701
(TIMER
CLOCK)
Specification
*1024.008
+
0.001
Hz
[976.5549
+
0.0010
x
sec)
{1)
Connect
the
frequency
counter
to
TP702
round
and
GND.
(2)
Connect
the
short
wire
between
TP701
round
and
VeclSV).
(3)
Short
the
leads
of
capacitor
C704
once
in
order
to
reset
1C701.
{4)
Disconnect
the
short
wire
then
connect
it
again
quickly.
(5)
Adjust
C701
for
1024.008
=
0.001
Hz.
(976.5549
=
0.0010
u
sec)
3.5
TUNER
CIRCUIT
Note:
Unless
otherwise
specified,
all
measurement
points
and
adjustment
parts
are
located
on
the
IF
BOARD.
3.5.1
PIF
VCO
Signal
©
TV
broadcasting
(PAL
B/G,
SECAM-L)
Mode
*
Tuner
Equipment
®
Monitor-TV
Adjustment
part
T2103
(PIF
VCO-2)
(PAL
B/G
broadcast)
©TC2101
(PIF
VCO-1)
(SECAM-L
broadcast)
Specification
|
*
Fine
picture
(1)
Receive
a
colour
broadcast.
(2)
Adjust
T2103
(TC2101)
to
obtain
a
fine
picture
on
the
monitor.
3.5.2
SIF
VCO
Signal
*TV
broadcast
(PAL
B/G,
SECAM-L}
Mode
I
«Tuner
Equipment
©
Monitor-TV
©TC2102
(SIF
VCO-1)
(PAL
B/G
broadcast)
©
T2104
(SIF
VCO-2)
(SECAM-L
broadcast)
1
*
Maximum
level
a
|
ae
(1)
Receive
a
colour
broadcast.
(2)
Adjust
TC2102
(T2104)
for
maximum
level
at
audio
sound.
Adjustmant
part
Specification
3.5.3
RF
AGC
Signal
©
TV
broadcast
Mode
°
Tuner
Equipment
*
Monitor-TV
Adjustment
parts
¢VR2101
(RF
AGC)
Specification
¢
Noise
just
disappears
Note:
Adjust
VR2101
(RF
AGC)
to
correct
for
excess
noise
in
the
picture
or
when
streaks
cross
interference
occurs
due
to
strong
electrical
fields.
(1)
Receive
a
colour
broadcast.
{2)
Adjust
VR2101
to
minimize
noise
or
streaks
on
the
TV
screen.
3)
Adjust
for
noisy
picture
with
strong
signal.
Then
adjust
until
noise
just
disappears.
Select
other
channels
to
con-
firm
proper
pick-up
of
channels.
3.5.4
33.4
MHz
TRAP
Signal
©
TV
broadcast
(SECAM-L)
Mode
¢
Tuner
Equipment
*
Monitor-TV
Adjustment
parts
#72101
(33.4
MHz
TRAP)
Specification
Fine
picture
(1)
Receive
a
colour
broadcast.
(2)
Adjust
T2101
to
obtain
a
fine
picture
on
the
monitor.
3.5.5
40.4
MHz
TRAP
e®
TV
broadcast
(PAL
G/G)
Mode
eTuner
Equipment
¢Monitor-TV
©72106
(40.4
MHz
TRAP)
Adjustment
parts
Specification
*
Fine
picture
(1)
Receive
6
colour
broadcast.
(2)
Adjust
T2106
to
obtain
a
fine
picture
on
the
monitor.
3.6
ODOEMODULATOR
CIRCUIT
Note:
Unless
otherwise
specified,
all
measurement
points
and
adjustment
parts
are
located
on
the
DEMODULATOR
BOARD.
3.6.1
STEREO
SEPARATION
«Sweep
generator
output
(90
dBp,
1
kHz)
*
Oscilloscope
#1C401-pin4
[MAIN
board]
*VR1501
(SEPARATION)
Equipment
Measurement
point
Adjustment
part
Specification
shied"
Shoner
than
5
cm
Fig.
3-6-1
Sweeper
probe
(1)
Use
a
sweeper
probe
as
shown
in
Fig.
3-6-1.
(2)
Supply
1
kHz
R-only
modulated
!F
signal
to
IF
terminal
of
UN
tuner
(front
end).
(3)
Connect
an
oscilloscope
to
1C401-pin48.
(4)
Adjust
VR1501
for
minimum
output
level.
34
lis
Lng
me
ye
tN
rrr

SECTION
4
CHARTS
AND
DIAGRAMS
NOTES
OF
SCHEMATIC
DIAGRAM
Safety
precautions
The
Components
identified
by
the
symbo!
A
are
critical
for
safety.
For
continued
safety,
replace
safety
critical
components
only
with
manufactures
recom-
mended
parts.
1.
Units
of
components
on
the
schematic
diagram
Unless
otherwise
specified.
1)
All
resistance
values
are
in
ohm.
1/6
W,
1/8
W
(refer
to
parts
list).
Chip
resistors
are
1/16
W.
K:
KQ
(10002),
M:
MQ
(1000KQ)
2)
All
capacitance
values
are
in
pF,
(P:
PF).
3)
All
inductance
values
are
in
yH,
(m:
mH).
4)
All
diodes
are
1SS133,
MA165
or
IN4148M
(refer
to
parts
list).
2.
Indications
of
control
voitage
AUX
:
Active
only
at
high.
AUX
or
AUX(L)
:
Active
at
low.
3.
interpreting
Connector
Indications
Removable
connector
Wire
soidered
directly
on
board
Non-removable
Board
connector.
Board
to
Board
1)
|
SF
Bea]
GD
cms
|
Connected
pattern
on
board
4.
Voltage
measurement
1)
Video
circuits
REC
:
Colour
bar
signal
in
SP
mode,
normal
VHS
mode.
PB:
Alignment
tape,
colour
bar
SP
mode,
normal
VHS
mode.
—
.
Unmeasurable
or
unnecessary
to
measure.
2)
Audio
circuis
REC
:
1KHz,
-8
dBs
sine
wave
signal
in
SP
mode,
Nor-
ma!
VHS
mode.
PB:
REC
then
playback
it.
3)
Movie
Camera
circuits
Measured
using
a
correctly
illuminated
grey
scale
or
colour
bar
test
charts
in
the
E-E
mode.
4)
Indication
on
schematic
diagram
Voltage
Indications
for
REC
and
PB
mode
on
the
sche-
matic
diagram
are
as
shown
below.
REC
mode
—»>
2.5
1.8
(8.0)
ie
and
REC
modes
(Voltage
of
PB
and
REC
modes
are
the
same)
PB
mode
Note:
If
the
voltages
are
not
indicated
on
the
schematic
diagram,
refer
to
the
voltage
charts.
5.
Waveform
measurement
1)
Video
circuits
REC
:
Colour
bar
signal
in
SP
mode,
normal
VHS
mode.
PB:
Alignment
tape,
colour
bar
SP
mode,
normal
VHS
mode.
Audio
circuits
REC
:
1KHz,
-8
dBs
sine
wave
signa!
in
SP
made,
normal
VHS
mode.
PB:
REC
then
playback
it.
Movie
Camera
circuits
Measured
using
a
correctly
illuminated
grey
scale
or
colour
bar
test
chatrs
in
the
E-E
mode.
Indication
on
schematic
diagram
Waveform
indications
on
the
schematic
diagram
are
as
shown
below.
2
3
4
Measurement
point
Wavetorm
number
5)
Waveform
indications
Waveform
name
or
measurement
point
Waveform
number
WF25
ALC
OUT
REC/PB
1.2
Vp-p
«———-_
Level
:
1.2
Vp-p
(80.
mV/2
msec/DIV,
Oscilloscope
Volts
and
Time/Division,
Probe
10:
1
Mode
:
REC
or
PB
modes
6.
Signal
path
Symbols
The
arrows
indicate
the
signal
path
as
follows.
Playback
signal
path
Playback
and
recording
signal
path
Recording
signal
path
(including
E-E
signal
path)
Y
signal
path
Colour
(Chroma)
signal
path
Aor
R-Y
signal
path
B
or
B-Y
signal
path
Capstan
servo
path
Drum
servo
path
eyyeege
vey
Reel
servo
path
7.
Indication
of
the
parts
for
adjustments
The
parts
for
the
adjustments
are
surrounded
with
the
circle
as
shown
below.
8.
Indication
of
the
parts
not
mounted
on
the
circult
board
“OPEN”
is
indicated
by
the
parts
not
mounted
on
the
circuit
board.
Or
the
symbol
number
is
struck
off
by
two
lines
as
below.
10K
—WWA—
42
CIRCUIT
BOARD
NOTES
1.
Foll
and
Component
sides
1)
Foil
side
(B
side)
:
Parts
on
the
foil
side
seen
from
foil
face
(pattern
face)
are
indicated.
2)
Component
side
(A
side)
:
Parts
on
the
component
side
seen
from
component
face
(parts
face)
indicated.
2.
Parts
location
guides
Parts
location
are
indicated
by
guide
scale
on
the
circuit
board.
B
:
Foil
side
'
te
(A:
Component
side)
Horizontal
“A”
zone
C
:
Chip
component
Vertical
“6”
zone
D
:
Discrete
component)
Notes:
1)
For
general
intormation
in
service
manual,
please
refer
to
the
Service
Manual
of
GENERAL
INFORMATION
Edi-
tlon
4
No.
82054D
(January
1994).
2)
For
repairing
SMC
(Surface
Mounted
Components),
please
refer
to
the
VIDEO
SERVICE
GUIDE
No.
VTS81001.

4.1
BOARD
INTERCONNECTIONS
AaC220-240V
30/60Hz
(o}(6)
TERMINAL
JOG/
SHUTTLE
Neo
sa
v8
GeO
SMUTTLE(L]
ve
ct
at
[-/
ff
\
4A-J63EMS
only
{)
@
oemoo
OEMCO
MUTEIHI
(HA-J638EH
ONLY!
18100"30
[ct]@t]
{w}00W30
IUINT
-v
2av
[erfsr]
IeINT-v
ZAV
t-1orony
[eifer]
(-yoronw
(Wetead
Pip)
|
Werwad
traxew
[esky
(xn
taywos
ferfer]
(H1B9S
OND
o1ony
[rift]
OVD
oTOnY
myano-w
[NT
v
tay
O30TA
BNII
[ct]ct]
OF0TA
3BNIT
OND
o30rA
[oifei]
OND
O30TA
ANGNT
OBOIA
ZAv
[Stet]
ANGNI
OBOIA
ZAV
OND
OBOTA
[rift]
OND
OIA
1NO(GSO1O3OTA
[Etfes}
1901050)
030IA
OROIA
ad
[eifet]
OFOTA
2d
O30rA
wanni
[2]
2]
301A
waINNL
(TNO
ANNE
HVORS
[1+]
(NO
W3NNL
HYD3S
FMa
cHi
ee
>
|
VPS!
VIDEO)
(o]
[5]
MAIN
(VIDEO/N.
AUDIO.
FMA.
PRE/REC.
SERVO.
SYSCON.
SW
REG.
TUNER.
TERMINAL:
ON
SCREEN}
—}
sh
ety
AL3AVS
O38
a
€
ge
iyeoe
|
eecemeess
.
‘mS
ssw
{[t
Fr]]
4S
ssv9
g
vy
3
208ND
$0z3ND
%
yt
Oo
oleln|
See
GGG
2Y
i
ia
OND
3H
ONS
td
(ToT
iNOW
{otony
LNows
OND
orany
[6
}——______
ond
OTOnY
tuporany
iNnoua
||>
}
—---——-—
{HIOTONW
INOHS
OND
A
a
ONS
44
OND
Jy
OND
at
03014
iNoud
||
O30IA
INDE
€Ortnd
vO2ZTND
QvV3H
O/V
JE)
LOADING
MOTOR
taiona
{Tr
[tT]
(21:0N9
2
[+]
2
ROTARY
ENCODER
(W}OND
|]
e}
8
ow
|fcfe
<a
(910N9
|[9[9]]
OND
Ww
Q
Actsaet
nw
=
(AyD
dvd
ao
a
taae
ava
lef
el
aa
avo
gq
Oo
asas
i[2]2]]
ASKS
94
avo
lft
[|]
94
avo
M
MOTOR
ZOtIND
ono
[]z
asvu3
dina
||P
20€ND
ORU
slelelal
lal
tal
|
V52elalt|
lial
2
Bras
iH
elsielels
alolal
mol
«fale
fofn
5
|
asdf
Ok
0d
Bd
Ee
oO
~N
8 g
aac?
H
:
gr
eb
ebee
as
ggeo
|
!
{
Wes
cachet
hs
oe
hae
te
2
er
te
ee
a
Stl
SW/DISPLAY
(3)
[6]
sw/uack
4-4
4-3

4.2
SYSTEM
CONTROL
BLOCK
DIAGRAM
cd
cae
|
|
(OB
MAIN
(SYSCON/SERVO)
CN
cn
Heancay
RO
eS
ae
ee
Zoe
HEAD
a,
fe]
CTL
HEAD
(—}
io
=
ee
A
=|
SO
AT
A
|
SETS
@
VP
CTL
@
V
PULSE
°
2
FROM/TO
ViIDEO/FMA
C.
SYNC
Fsc
GA
FF
LOADING
|
MOTOR
3
eae
LOM
2
ramet
M1
[]
cn702
2);
USC
34
(SA
FROM
ROTARY
ENCODER
INP
DRUM
MOTOR
e
a
;
cnso2
po
oes
ey
}
FROM
DISPLAY/SW
a704
705
CAP
MDA
This manual suits for next models
1
Table of contents
Other JVC DVR manuals