Sanyo FISHER V95I User manual

FILE NO.
BASIC SERVICE TECHNICAL SANYC
INFORMATION
4]
FISHER
Video
Cassette
Recorder
V95
[MECHANISM
VHS!
PAL SECAM NTSC
Contents
1.
MAINTAINING
AND
CHECKING
3-7.
CAPSTAN
MOTOR
...........00cceeeeee
15
4.
MECHANISM
CHECKS
AND
THE MECHANISM 3-8. LOADING MOTOR ASSEMBLY ADJUSTMENTS
1-1. REGULAR CHECKS AND AND WORM GEAR ASSEMBLY ... 16 4-1. REEL TABLE TORQUE CHECK.......27
MAINTENANCE ITEMS ..........0.0000e- 2 3-9. PINCH ROLLER PRESSURE 4-2. ADJUSTING THE BT LEVER
1-2. SERVICE TOOLS ......cceseceeeeeeeeeeee 3 MECHANISM uu... .ececescseseseseeceeceeeee 16 ASSEMBLY POSITION AND
2. AN OVERVIEW OF THE 3-10. L GUIDE LEVER ASSEMBLY AND CHECKING THE BACK TENSION
MECHANISM LOAD LEVER ASSEMBLY ............. 18 TORQUE IN PLAY MODE .............. 27
2-1. NAMES OF THE MAIN PARTS ....... 4 3-11. BT LEVER ASSEMBLY ..........00000- 18 4-3. TAPE PATH ADJUSTMENT .......... 28
2-2. AN OVERVIEW OF THE 3-12. REEL DRIVE MECHANISM ............ 19
MECHANISM MODES ............00000- 6 B13. BRAKES citctacsicsGearasscoreentienttitedeess 20
3. DIS-ASSEMBLING THE MAIN STS GUIDES swetesntadesatissonehtonssseeitencciaags 22
PARTS OF THE MECHANISM 3-15. WHEEL GEAR 2, MAIN CAM AND
3-1. HOW TO MAKE THE MECHANISM MODE SWITCH ......ccseseeeeeeeeeeeeee 23
MOVEx ea etn tarot 8 ~° 3-16. CRESCENT SLIDE uc 24
3-2. MECHANISM UNIT ou... cece. 9 3-17. S LOAD GEAR, T LOAD GEAR,
3-3. CASSETTE DRIVE MECHANISM ....9 S LOAD LEVER ASSEMBLY AND
3-4. CLEANER ROLLER T LOAD LEVER ASSEMBLY .......... 25
ASSEMBLY ..u.cicecesescscsscseeeeseeeeeees 11 3-18. TAPE SENSORS, REEL SENSOR
3-5. CYLINDER (DRUM) uu... eee 12 AND EP SW LEVER ....eeceeceeeeees 26
3-6. FE HEAD AND ACE HEAD.............. 14
V MECHANISM REFERENCE No.MM531433

Notice SANY' O
[e| CORRECTION [ PRODUCTION CHANGE
= SERVICE FLASH = ADD INFORMATION FISHER’
Please add this notice to the manual listed below.
Category : VIDEO CASSETTE RECORDER Date: July/10/’95
Model : V95I MECHANISM REF : No. MM531433
This correction notice is a revised edition of the V95I mechanism basic service technical information
(Reference No. MM531433).
2-2. AN OVERVIEW OF THE MECHANISM MODES
2-2-1. MECHANISM MODE SWITCHING TABLE
NOTE: The letters and figures enclosed in circles in the mechanism mode column are the codes on the crescent slide.
The principal mode-switching states of the mechanism
EJECT®
Distinguished by whether the
EP switch is ON or OFF. (EJECT)
Horizontal shift section.
Vertical shift section.
IN REW
(SHORT REW)
INITIAL
<7 INTIAL @ SE
<< STILL/SLOW @
Cleaner roller assembly: ON
S/T mounting incline assembly
pressure begins. When loading is carried out starting at
S/T mounting incline assembly the CASSETTE IN position.
pressure ends.
REVIEW ®
IDLER pos. @
(Pinch roller OFF)
ir |
REC PAUSE STOP |. | PLAY | cue
Printed in Japan
SANYO Electric Co., Ltd
Osaka, Japan REFERENCE No. MM 531433-01

MODE SWITCH OUTPUT TABLE APPEARANCE OF MODE SWITCH AND
RELATIONSHIP BETWEEN MODE POSITIONS
(S): Strength (W): Weakness
IDLER
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Load lever assembly U
Capstan brake assembly OF
S and T incline mounting assembly at
[Cleaner roller assembly | OFF |
Cleaner roller assembly
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2-2-3. HOW TO CHECK THE MECHANISM MODE
POSITION
You can tell which mode the mechanism is currently in by The edge of the
looking at the codes and marking-lines on the crescent crescent mounting Crescent mounting
slide on the underside of the mechanism chassis. The edge is the reference-line.
of the crescent mounting is used as the reference line, as
shown in Fig.2-2-2, and the marking-lines and symbols
indicating the mechanism modes are displayed on the
crescent slide, which slides against the edge of the
crescent mounting. The mechanism mode is read off from
the marking-line on the slide crescent which is aligned
with the reference-line on the crescent mounting.
Example: In Fig.2-2-2, marking-line 6 is aligned with the
reference-line on the crescent mounting, sothe mechanism
is seen to be in FF/REW mode.
5; PLAY/STOP
3: STILL/SLOW
2: IDLER
1: REVIEW
Some models are equipped with the SELF-DIAGNOSIS oS | Cees eee
DISPLAYS function. CF <i
Use it as a means of finding out the symptoms and cause of = GOES | DO Rn ena
the error before performing repairs.
For details, refer to the separate service manual for the
respective models.

1. MAINTAINING AND CHECKING THE MECHANISM
1-1. REGULAR CHECKS AND
MAINTENANCE ITEMS
To obtain full function and maximum performance from
the set, and to stop it getting dirty or scratched, we
recommend that you carry out the following maintenance
procedures and regular checks. The maintenance checks
described in the following section should also be carried
out without fail after carrying out any repairs to the set.
1-1-1. REGULAR CHECKS
Hours of use (H)
Part maintained
Tape guide
ACE head, full erase head
=
oO
jo)
=
oOo
Oo (a)
Tape path
system
FWD, REW, PLAY torque,
REV torque
Cylinder (drum)
pt TT | fel fel [2 fofol
| © oele|>|ejojoje|sofolo || TT | fet [of [so folo!
eo] >le/slolels 0 fol
1-1-2. CLEANING
1. Cylinder (Drum) (See Fig.1-1-1)
Moisten a chamois with methyl alcohol and clean the video
head (including the Hi-Fi audio head) and the tape path
surface of the cylinder. Be sure to wipe horizontally in
relation to the video head. If you wipe vertically, or use
excessive force, you can damage the video head.
2. Tape Path System / Reel Drive System
Clean the pinch roller, the capstan shaft, the tape guides,
the FE head, the ACE head, the reel table, the pulley and the
reel belt with a soft cloth, or chamois, moistened with
methyl alcohol.
2000/2500/3000 | 3500/4000 4500
NOTE: OIL AND GREASE
e Always use the specified brands of oil and grease. If you
use a grease with the wrong viscosity, for example, this
can lead to all sorts of problems. Be careful to keep the
oil and grease free of dust and foreign bodies.
¢ A “drop” of oil is the amount of oil remaining on the tip
of a rod with a diameter of 1.5mm after it is dipped in oil
to a depth of 1cm and then taken out.
OClean ©Check AOil
The life of parts varies
enormously, depending on the
environment in which the part
is used.
oe
e
© O
»[elolole|s ololo] B
Heres FORE
o| [oO
Playback tension torque:
30 to 50g/cm
FWD: 600g/cm or over
REW: 600g/cm or over
PLAY (SP mode):
80 to 140g/cm
REV: 120 to 220g/cm
LL é Cylinder
4 é h (Drum)
+L 'S?)
Tape path surface Video head
Fig.1-1-1

1-2. SERVICE TOOLS
1-2-1. SERVICE TOOLS
NOTES ON ALIGNMENT TAPES
Select a PAL or NTSC alignment tape from the list below, according to the transmission system of the VCR you are
repairing.
PAL: For models with 625 scanning lines and a field frequency of 50Hz
NTSC: For models with 525 scanning lines and a field frequency of 60Hz
[1 [Alignmenttape ——~—~—SCSdSC HJ -0005_ | VH-0008 | SPecolurr bar 1kHz (normal) |
[~2"~[Alignment tape VH-0008 | vH-0009 | SP monoscope TkHe (normal) __|
vis-0007 | ——— [EP monoscope
[4 [Alignment tape SSS | v0 | LP monoscope =
[5 [Eccentric screwdriver ——~SCSCSCS~C~S~ST 0003 | Used to adjust the tape path |
Nut box VHJ-0048 Used to adjust the height of the lever
load assembly
Torque dial gauge VHJ-0004 Used to measure reel winding torque
Cassette torque meter VHJ-00 16 Used to measure back tension torque
Load lever assembly height adjustment tool VHJ-0102 Used to adjust the height of the load
lever assembly
Torque gauge screwdriver VHJ-0014 Used to adjust the tightening torque of
screws
3 mm dia. bit for torque screwdriver VHJ-0045 Used to replace the bit of the torque
gauge screwdriver
Video head removing tool VHJ-0041 Used to remove the upper cylinder
VHJ-0099 ee ies ee ee ee
Grease VHJ-0100 Se ee ee
| 15 | Grease VHJ-0101 Ie wee cece as ene ee
16 Relay cables VHJ-0106 Relay cables of mechanism and CP-1
PWB assembly
VHJ-0003 VHJ-0048 VHJ-0004
No. 5 ; No. 7
VHJ-0102 VHJ-0014 VHJ-0045
No. 9 No. 11
VHu-0041 VHJ-0099 VHJ-0106
No. 14, 15 No. 16 Fig.1-2-1

1-2-2. Using the Relay Cable (VHJ-0106)
The mechanism can be repaired without using the relay
cable (VHJ-0106). As shown in Fig. 1-3-1, the relay cable
(VHJ-0106)
is
a
tool
used
for
relay
between
the
CP-1
PWB
a
assembly
and
mechanism
unit.
Sor
__—
VM-1
(VP-1)
PWB
When
connecting
it,
take
note
of
the
pin
number
of
the
IN
assembly
connector.
¢ II
NOTE
1:
Do
not
place
the
mechanism
upright
as
shown
in
<&.
LS
g
ST
S
OM
~.)
Fig. 1-3-1 when inserting/ejecting the cassette.
NOTE 2: For NTSC models, be sure to connect the VM-1
PWB assembly and CP-1 PWB assembly.
Relay cable: we
VHJ-0106
Mechanism unit
CP-1 PWB assembly
Fig. 1-2-2
2. AN OVERVIEW OF THE MECHANISM
2-1. NAMES OF THE MAIN PARTS
2-1-1. CASSETTE MECHANISM ASSEMBLY
Stand L
Release lever
a Lid opener spring
Under
frame
Pinion
gear
Door opene
lever
Gear holder
Drive gear
Fig. 2-1-1
-4-

2-1-2. TOPVIEW
Capstan brake assembly
Cleaner roller assembly :
Cleanar lever Audio R/P head assembly
Cylinder (Drum) (ACE head)
(ere,
(e)
Capstan motor
Cylinder mounting
Pinch roller lever assembly
Guide roller assembly
Pinch lift cam
T incline mounting assembly
3
Full erase head —74J? ) \
S incline mounting assembly O
p>
Guide roller assembly
Tape end sensor +i
BT lever assembly oo
Tape sensor LED ° = = L guide act lever assembly
BT
spring
It
Oe
\
I
;
g
|
Band brake assembly | NC
Supply reel assembly ‘ © ma Fash bidkowsesienly
S soft lever oi g YA 70) WG :
~ [3 8X
EP switch O i<
Oo FLS
fa — a
Pinch lift mounting
Front rack gear
Opener mounting
Pinch cam gear
Start rack gear
Load lever assembly
Tape top sensor
Take-up reel assembly
EP aw lever S brake T brake act slide T reel gear
assembly
T brake assembly Clutch mounting assembly
S reel gear
2 Fig. 2-1-2
2-1-3. UNDERSIDE
Cylinder earth
Reel belt Capstan motor assembly
Stator
Rotor
T load gear
. S load gear
Pinch cam gear
Crescent mounting
T load lever assembly
Mode switch ($8001)
Vo S load lever assembly
Co TB
7 BE
Brake control lever | 3 £4 O6G
Sy A\
\
'
‘<
edt
MC-1
PWB
assembly
Se
ra]
BT spring lever assembly
Clutch change lever
Crescent slide
Te act lever
Wheel gear 2 Wheel gear 1 assembly Reel pulley S brake act slide
Worm gear assembly Friction gear assembl
Loading motor assembly 9 i Fig. 2-1-3
—-5 —-

2-2. AN OVERVIEW OF THE MECHANISM MODES
2-2-1. MECHANISM MODE SWITCHING TABLE
NOTE:
The
letters
and
figures
enclosed
in
circles
in
the
mechanism
mode
column
are
the
codes
on
the
crescent
slide.
HEX
The principal mode-switching states of the mechanism
EJECT ©
istinqui ASSETTE OUT
<< Distinguished by whether the
EP switch is ON or OFF.
Horizontal shift section.
Vertical shift section.
IN REW®
INITIAL
7
|G
INITIAL
@
|
Le
0
Cleaner roller assembly: ON
S/T mounting incline assembly When loading is carried out starting at
pressure begins. et
S/T mounting incline assembly the CASSETTE IN position
pressure ends.
REVIEW
<<] REVIEW @
a IDLER pos. @
fo (Pinch roller OFF)
STILL/SLOW:
hes
STILL/SLOW
@
if
Hl
oe
PLAY/STOP
©
REC PAUSE REC sTOoP [>| PLAY ye cae
0
4 BRAKE pos. @
0
g <——
MODE SWITCH OUTPUT TABLE APPEARANCE OF MODE SWITCH AND
RELATIONSHIP BETWEEN MODE POSITIONS
FF/REW
PLAY/STOP
BRAKE CASSETTE IN
STILL/SLOW IN REW
IDLER INTIAL
REVIEW
CZXY Fig.2-2-1

2-2-2. MOVEMENT CHECK LIST FOR THE MAIN PARTS OF THE MECHANISM
Sal
Cleaner roller assembly
2-2-3. HOW TO CHECK THE MECHANISM MODE
POSITION
You can tell which mode the mechanism is currently in by
looking at the codes and marking-lines on the crescent
slide on the underside of the mechanism chassis. The edge
of the crescent mounting is used as the reference line, as
shown in Fig.2-2-2, and the marking-lines and symbols
indicating the mechanism modes are displayed on the
crescent slide, which slides against the edge of the
crescent mounting. The mechanism mode is read off from
the marking-line on the slide crescent which is aligned
with the reference-line on the crescent mounting.
Example: In Fig.2-2-2, marking-line 6 is aligned with the
reference-line on the crescent mounting, sothe mechanism
is seen to be in FF/REW mode.
2-2-4. SELF-DIAGNOSIS DISPLAY
Some models are equipped with the SELF-DIAGNOSIS
DISPLAYS function.
Use it as a means of finding out the symptoms and cause of
the error before performing repairs.
For details, refer to the separate service manual for the
respective models.
(POWER OFF)
ele/gie (LOADING)
a
OFF | OFF | OFF | ON
OFF | OFF | OFF J|ON(W) JON(W)|ON(S)]ON(S) |ON(S) JON(W)
uP [8 2" ow | oF oF | OF
[SendTincine mouning assembly | | |
(ON)
> x< me) c~ > < Uv E >
~< vU
cc
> < Uv [~ > x< vU {~ >
~< Uv
Cc
> << Uv c_ >
<
R
RA,
(S): Strength (W): Weakness
rey
STILL/SLO
O
7 nm
Oo
nT
nm
2]2)$) 2 jumoaoine
ml
O!lo0};O 0O10/0|90
ninmyn ni mnynN
2]3]8/8 9 | PLAY/STOP
TN nN TT TI
a | “Tl
*
z 5
o -
a O
2| [ols
nm n{|O
fe) <
-|Olc
Cc
O
rd i
S| | BIS
ma) mal Oo
gl g
nN TT nN mal
The edge of the
crescent mounting
is the reference-line.
Crescent mounting
XS
oa Be ses
Ca CO
a O ae. © 6: FF/REW
‘ae } (_ 4: BRAKE
ee a KAS
5: PLAY/STOP
1 Ween 3: STILLISLOW
Crescent slide _|| ae 7: INITIAL
CC || rower ofr)
a i IN REW
| Sit (SHORT REW)
rs ‘im
BO E: EJECT
Fig.2-2-2

3. DISASSEMBLING THE MAIN PARTS
OF THE MECHANISM
POINTS TO NOTE
¢
When
fitting
the
parts
of
the
mechanism,
refer
to
the
"Assembly
Notes",
and
proceed
in
the
reverse
of
dis-
assembly
order.
*
Dis-assembly
and
assembly
should
be
carried
out
in
EJECT
mode
unless
a
movement
mode
is
explicitly
specified.
EJECT
mode
is the
state
in
which
the
cassette
tape
has
been
ejected.
° Clamps are used to prevent parts coming loose. When
removing a clamp, be careful not to force it, as this can
result in damage.
3-1. HOW TO MAKE THE MECHANISM
MOVE
In
order
to
check
a
movement
such
as
front
loading,
front
unloading,
tape
loading,
tape
unloading,
raising/lowering
and
pressing
the
pinch
roller,
you
will
need
to
operate
the
loading
motor.
There
are
two
methods
of
operating
the
loading
motor,
and
these
are
explained
in
sections
3-1-1
and
3-1-2.
The
above
movements
can
also
be
performed
without
operating
the
loading
motor,
by
following
the
method
explained
in
section
3-1-3.
3-1-1. HOW TO OPERATE THE LOADING MOTOR
USING A DC VOLTAGE SUPPLY
(See Fig.3-1-1)
1) Remove the power plug from the socket.
2)
Remove
the
top
cover,
front
cabinet
assembly
and
bottom
cover.
3) Supply a DC voltage in the range 5V between the
MOTOR
(+)
wire
and
the
MOTOR
(-)
wire
on
the
CP-1
PWB
assembly.
To
make
the
loading
motor
rotate
in
the
PLAY
or
FF/REW
direction,
the
positive
terminal
should
be
connected
to
the
MOTOR
(+)
wire,
and
the
negative
terminal
to
the
MOTOR
(-)
wire.
To
make
it
rotate
in
the
EJECT
direction,
connect
the
positive
terminal to the MOTOR (-) wire, and the negative
terminal to the MOTOR (+) wire.
When
rotating
the
loading
motor
in
the
EJECT
direction
with
a
tape
slacken,
stop
the
rotation
of
the
loading
motor
before
beginning
front
unloading.
Rotate the capstan motor with your hand, wind the
slacked part of the tape, and rotate the loading motor
in the EJECT direction again.
NOTE
1:
When
carrying
out
front
loading,
release
the
lock
by pressing down the tray lock lever) and the lid opener
lever
@
of
the
cassette
mechanism
assembly
(shown
in
Fig.3-2-2) in the direction of the arrow.
NOTE
2:
When
the
loading
motor
stops
rotating,
following
the
completion
of
an
operation
such
as
tape
loading
or
front unloading, switch off the DC voltage supply.
Motor (—) wire
Front side
Fig.3-1-1
3-1-2. OPERATING THE LOADING MOTOR BY THE
MANUAL METHOD (See Fig.3-1-2)
1) Refer to section 3-2 and install the mechanism unit.
2) Using your finger, turn the loading motor located at
the rear of the mechanism unit. For EJECT, turn the
loading motor in the direction of the arrow on the
loading motor. For PLAY or FF/REW, turn it in the
opposite direction.
When rotating the loading motor inthe EJECT direction
with a tape slacken, stop the rotation of the loading
motor before beginning front unloading.
Rotate the capstan motor with your hand, wind the
slacked part of the tape, and rotate the loading motor
in the EJECT direction again.
When carrying out front loading, release the lock
by pressing down the tray lock lever © and the lid
opener lever @) of the cassette mechanism assembly
(shown in Fig.3-2-2).
The arrow which show the direction of EJECT
y- PELGGEE
t nan
| Fig.3-1-2
Loading motor
3-1-3. MAKING THE MECHANISM MOVE USING
THE MANUAL METHOD
1) Refer to section 3-2 and remove the mechanism unit.
2) Refer to section 3-15 and remove the gear wheel 2.
3) If you turn the main cam anticlockwise, the mechanism
will switch to a mode such as PLAY or FF/REW. To
switch from FF/REW mode to EJECT mode, turn the
main cam clockwise.