Lever Pinch Cam, Arm Review Ass’y &
Lever Review Ass’y
LEVER-PINCH COMP
&p
Fig. 36 Unit Pinch Roller Ass’y Removal
2-8-11.
Assembly of Unit Pinch Roller
1) Install the unit pinch roller as shown in Fig. 29.
(Refer to A,
6)
Q WASHER-SLIT
@
UNIT-PINCH ROLLER
@
SPRING-ARM PINCH
ARM-REVIEW ASSY
LEVER-REVIEW
LEVER-PINCH CAM
Fig. 38 Exploded View of Lever Pinch Comp Ass’y, Lever
Pinch Cam, Arm Review Ass’y 81 Lever Review
Ass’y
2-8-13. Lever Pinch Comp Ass’y Removal
1) Release the tab @ in the direction of arrow.
(Refer to detail drawing)
2) Lift the lever pinch camp ass’y
@.
UNIT-PINCH ROLLER
.
Fig. 37 Assembly of Unit Pinch Roller
-
<TOP
VIEW>
!-II
t-l
I y
NOTE : Don’t touch the lever pinch camp ass’y @ to
audio head base during removal.
@
LEVER-PINCH
COMP
<DETAIL>
Fig. 39 Lever Pinch Comp Ass’y Removal
2-20
ASS’Y
Page 22
2-8-14.
Lever Pinch Cam Removal
1) Release the tab a in the direction of arrow.
(Refer to detail drawing)
2)
Lift the lever pinch cam
a.
2-8-18. Lever Review Removal
(j)
1) Release the tab
(Refer to detail drawing)
2) Lift the lever review
in the direction of arrow.
a.
@
LEVER-PINCH CAM
r
<DETAIL>
Fig. 40 Lever Pinch Cam Removal
2-8-l 5. Arm
1) Push the stopper tab (D in the direction of arrow.
2) Pull the arm review ass’y Q in the direction of arrow ‘A’
and then confirm ‘B’. (Refer to detail drawing ‘A’)
3) Release the tab
the arm review ass’y
Review Ass’y Removal
@ in the direction of arrow and then lift
a.
@ LEVER REVIEW
<DETAIL>
Fig. 42 Lever Review Removal
2-8-17.
1) Remove the belt capstan
Belt Capstan Removal
a.
NOTE : Take extreme care not to touch the grease when
removing or reinstalling.
NOTE : Take extreme care not to damage when removing
the arm review ass’y
(B
part of detail drawing
I
NOTE:
Fig. 41 Arm Review Ass’y Removal
Be sure to remove the arm review assy with
using
the(-)dri
Cp.
A)
ARM REVIEW ASSEMBLY
\ \,
DETAIL “A”
DETAIL "B”
Fig. 43 Belt Capstan Removal
2-21
@
BELT-CAPSTAN
Page 23
2-8-18.
1)
2)
3)
Brake Capstan Ass’y Removal
Remove the spring brake capstan
Release the tab Q in the direction of arrow.
(Refer to detail drawing)
Lift the brake capstan ass’y
(J).
a.
@
SPRING-BRAKE
CAPSTAN
@
BRAKE CAPSTAN
ASSY
l--------l
2-8-20.
Clutch Ass’y Removal
1)
Remove the washer slit
2)
Lift the clutch
3) Remove the washer plain
ass’y
QI.
a>.
9-0
@.
WASHER-SLIT
Q
CLUTCH-ASSY
@WASHER-PLAIN
1
<DETAIL>
Fig. 44 Brake Capstan Ass’y Removal
2-8-19.
Motor D.D
1)
Remove
2)
Lift the motor D.D capstan (p in the direction of arrow.
(Bottom view)
three(3)
Q MOTOR-D.P
(TOP VIEW)
0
THREE SCREWS
Capstan
screws @. (Top view)
CAPSTAN
1
Removal
Fig.46 Clutch Ass’y Removal
2-8-21. Gear Master Removal
1)
Remove the washer slit
2)
Lift the gear master
Q).
@
0
WASHER-SLIT
C When
Fig. 45 Motor D.D Capstan Removal
reyemf$qkytor -
.sid$.of
capstan wafer
R-R
&th-doppef
capstan@,. align
trs’doun
fi&ia,.
Fig. 47 Gear Master Removal
2-22
Page 24
2-8-22.
Assembly of Gear Master
2-8-24.
Lever Slide Pinch Removal
1)
When reinstalling, be sure to align the arrow mark of
gear master
(Refer to timing point)
@
GEAR WORM WHEEL
UNIT LOADING
a
with gear home of gear worm wheel
00
Fig. 48 Assembly of Gear Master
2-8-23.
Unit Loading Removal
1) Remove the washer slit
a
2) Lift the lever slide pinch
a.
a,
@
WASHER-SLIT
@I
LEVER SLIDER PINCH
/
<-,
Fig. 50 Lever Slide Pinch Removal
1)
Remove twoQ) screws
2) Lift the unit loading @ in the direction of arrow.
0.
Q
TWO SCREWS
p--?
LOADING
Fig. 49 Unit Loading Removal
2-8-25.
SLIDER PINCH BOSS
Assembly of Lever Slide Pinch
1)
Pull the slide pinch @to the end in the direction
of arrow.
2) Insert the slide pinch
pinch (p. (Refer to ‘A’ part)
@
SLIDER-PINCH
LEVER SLIDER PINCH
Fig. 51 Assembly of Lever Slide Pinch
(j)
into the hole of lever slide
2-23
Page 25
2-8-28. Slide Main Removal
2-8-27. Assembly of Slide Main
1) Remove the washer slit
2) Release
3) Lift the slide main
three(3)
tabs
6).
a.
QI, @,
@ in the direction of arrow.
@
WASHER SLIT
CBL
1) Install the shaft of gear loading ‘R’ ass’y into the left of
the main slide hole and secure with the washer slit
(Refer to ‘A’)
2) Insert the lever tension control
change @ into the slide main hole. (Refer to
3) After confirming the above items
main and secure with tabs
NOTE:
Be sure to assemble the side main when the
gear loading
i/r
assy is inunloading posision.
@
Q)
and the lever idler
1), 2)
install the slide
(a,
b,
c).
GEAR-LOADING’R’ASSEMBLY
a
EVER
0
LEVER-IDLER CHANGE
0
LEVER-TENSION
’
CONTB~~
G "L" ASSEMBLY
I
a.
‘B’)
Fig. 52 Slide Main Removal
7
@
LEVER-REC
NOTE :
Fig. 53 Assembly of Slide Main (Bottom view)
‘r-------’
NOTE: Six parts should be installed into the side
Seven parts should be installed into the
side main hole.
LEVER REVIEW
\
main hold.
S/W
I
CAM
I
A
Fig. 54 Assembly of side
2-24
Main(Top
view)
Page 26
2-8-28.
Lever Shift Ass’y Removal
2-8-30. Gear Loading
‘I”, “R”
Ass’y Removal
1) Hang the spring lever shift (D to the claw of the lever
shift @. (Refer to detail drawings ‘A’, ‘B’)
2) Release the tab @ in the direction of arrow.
3) Lift the lever shift
@I
LEVER SHIFT
I
F
*
Fig. 55 Lever Shift Ass’y
,
@
SPRING LEVER SHIFT
<DETAIL
“A”>
@.
@
SPRING LEVER SHIFT
\
@
LEVER SHIFT
<DETAIL ‘B’>
Remova
1) Remove the gear loading ‘R’ ass’y @ from the slide
guide roller ‘T
in the direction of arrow. (Refer to detail drawing ‘A’)
2) Remove the gear loading ‘L’ ass’y Q from the slide
guide roller
in the direction of arrow. (Refer to detail drawing ‘B’)
3) Lift the gear loading ‘R’ ass’y
4) Lift the gear loading ‘L’ ass’y @ by pushing the tab Q of
the gear loading ‘L’ ass’y a. (Refer to detail drawing ‘C’)
ASS’Y
(3,
by pushing the spring loading ‘R’
‘s’
@ by pushing the spring loading ‘L’@
a.
f---- @
GEAR LOADING
@
GEAR LOADING
44’
a
‘R’ AS’Y
‘L’
ASS
2-8-29. Lever Idler Change Removal
1) Release the tab @ in the direction of arrow.
(Refer to detail drawing)
2) Lift the lever idler change
7
@ LEVER IDLER CHANGE
Fig. 56 Lever Idler Change Remo
@
SPRING LOADING (R)
<DETAIL “A”>
Fig. 57 Gear Loading ‘L’,
2-8-31. Gear Loading
1) When reinstalling, be sure to align two arrows as shown
in Fig. 58. (Refer to timing point)
GEAR LOADING
“R’ASS’Y
ALIGN TWO ARROWS
\
11 @ SPRlNG LoADlNG (L)
‘R’
Ass’y Removal
‘I”, “R”
<DETAIL
Ass’y
9%
GEAR LOADING
Fig. 58 Assembly of Gear Loading ‘L’,‘R’ Ass’y
2-25
Page 27
2-8-32.
Slide Pinch Removal
1)
Push the tab @ in the direction of arrow ‘A’.
(Refer to detail drawing)
2)
Lift the slide pinch @ in the direction of arrow
@ SLIDER
I
PINCH
‘6’.
2-8-34. Prism LED Removal
1)
Release the tab @ in the direction of arrow.
(Refer to detail drawing)
2)
Lift the prism LED
Q).
0
PRISM-
LED
VT
PRISM
LED
@
TAB
/
Fig. 59 Slide Pinch Removal
2-8-33. Slide Push Removal
1) Remove the spring slide push
2) Push the slide push Q in the direction of arrow ‘A’.
3)
Lift the slide push Q) by pushing the tab Q in the
direction of arrow ‘B’. (Refer to detail drawing)
fl
4
0.
SPRING - SLIDE PUSH
SLIDER - PUSH
l------I
1
<
DETAIL
Fig. 61 Prism LED Removal
+
-TOP VIEW>
I
2-8-35. Lever Record Switch Removal
1) Remove the spring record switch
2)
Release the tab QI in the direction of arrow.
(Refer to detail drawing)
3)
Lift the lever record switch
__ @
6
SPRING REC
- @
LEVER REC
MAIN BASE
0.
0.
S/W
C/W
DETAIL(TOP VIEW)
Fig. 60 Slide Push Removal
<DETAIL
Fig. 62 Lever Record Switch Removal
2-26
LEVER REC
SIW
Page 28
2-8-36. Full Erase Head Removal
1)
Remove one0) screw
2)
Lift the magnet WE head 8).
@
f---
@
Fig. 63 Full Erase Head Removal
2-8-37. ACE Head Removal & Reassembly
1)
Release the tab @ holding holder ACE toward arrows.
(Refer to detail drawing ‘A’)
2)
Remove
3) Lift the magnet ACE head ass’y
one(l)
screw
Q).
ONE SCREW
MAGNET F/E HEAD
QI.
@.
2-8-38.
Slide Guide Roller “s”,
1)
Remove the cylinder ass’y from the main base.
(Refer to Fig. 19,
2)
Remove the slide
ass’y. (Refer to Fig.
3)
Move the guide roller ‘S’, ‘T ass’y to slot and then lift it
to remove. (Refer to arrow)
20)
‘s’, T
from the gear loading ‘L’,
58)
“T” Ass’y
Removal
‘R
Assembly : When reinstalling, be sure to align the three
teeth of X-Position adju$tment gear with the
two slot of ACE head base.
NOTE : When adjusting the X-position adjustment gear
using
1~)
driver, do not adjust by force.
r-------
i --
I
---%J
r-n/
-r-z
,#
Fig. 65 Slide Guide Roller
‘s’, ‘T
Ass’y Removal
HOLDER ACE
<DETAIL
Fig. 64 ACE Head Ass’y Removal & Reassembly
I
‘A=>
“ul
1
7
2-27
Page 29
2-8-39. Slide Guide Roller “S”,
“T”
Ass’y
(When all parts except the cylinder
assembly are removed.)
1) Push four(4) Lever Locks a of the housing ass’y
Simultaneously. (Refer to Fig. 66)
2) Push the holder cassette
turning the gear master Q toward arrow ‘A’.
(Refer to Fig.
3) Load the gear loading L, R ass’y @. a to the middle
position of guide rail by turning the gear master
toward arrow ‘A’. (Refer to Fig. 66, 67)
4)
Install the slide guide roller S, T @, QJ into rail slot and
then move it to the position of gear loading L, R ass’y
0, a.
5)
Turn the gear master @ toward arrow ‘A’. (Eject mode)
66)
(Refer to Fig.
67)
ass)
@toward arrow ‘B’ while
Q
k2_0
Fig. 66 How to operate the Housing Ass’y
HOMIER CASSETTE
ASSEMBLY
@
SLIDER
ASSY (T)
G/R
Fig. 67 Assembly of Slide Guide Roller
‘s’, ‘r
Ass’y
2-28
Page 30
3-2. TAPE TRANSPORT SYSTEM
3-2-l. Location of Tape Transport Adjustment (Adjustment Reference)
The lower flange height of the tape guide is used as the basic reference point for transport adjustments.
To keep the height of the tape guide, do not apply excessive force onto the main base to prevent damage.
FULL ERASE
TENSION POLE
#l
GUIDE POLE
SUPPLY
Fig. 1 Location of Tape Transport Adjustment
F/E
HEAD
KEEL DISK
#3
GUIDE SHAFT
TAKE UP REEL DISK
CYLINDER ASS’Y
GUIDE ROLLER
PINCH ROLLER
PINCH ROLLER
‘r
CAPSTAN SHAFT
ADJUSTING :
CHECKING :
REVIEW POLE
I-]
Fig. 2 Tape Travel Diagram
3-3
Page 31
3-2-2. Tape Transport System Adjustment
1) Pm-adjustment
When parts are replaced, perform the required adjustments
by referring to the procedures for the tape transport
system. When parts are replaced, the tape path may be
changed.
First run a T-l 60 tape and be sure excessive tape wrinkle
does not occur at any tape guide.
1. If tape wrinkles at the S. T-guide rollers, turn
the S,T-guide rollers until the wrinkle
2. If tape still wrinkles at the tape
do the tilt adjustment of the A/C head.
drsappears.
gurde,
2) Adjustment procedures
1. A/C head assembly adjustment
Test
Point
:
TP302 (Envelope)
TP804
TP202
TP201 (Control Pulse)
Test Tape :
L
(Audio
Out)
(H’D
SW Pulse
ST-N1
(Blank Tape (T-160)
-Trigger)
CCREW (6)
ITU An.11 IST
ADJUST GEAR(E).
\
SCREW(D)
X - POSITION LOCKING
SCREW (A)
HEIGHT ADJUST
Fig.
4 Locatron of A/C Head Adjustment Screw
AUDIO HEAD
VIDEO TAPE
I
CONTROL HEAD
SCREW(C)
TILT
ADJUST
X - POSITION
HOLE (F)
0 -
0.25mm
0
Fig. 3 Location of Test Point (Main
a. A/C head height adjustment
1. Run the alignment tape (ST-Nl) In the playback
mode.
2. Observe the surface of the audio head using a
dental mirror.
3. Turn screws(A), (B), (C) clockwise or
counterclockwise until the gap of the lower tape
edge and the lower edge of the control head is
about 0.25 mm. (Refer to
Fig.
PCB)
4. and 5.)
I----
Fig.
5 A/C Head
Height
Adjustment
b. A/C head tilt adjustment
1. Playback a T-160 tape and observe the
the tape at the lower flange of the tape
2. Confirm that there IS no curl or wnnkle at the lower
flange of the tape guide, as shown In Fig. 6
3. If a curls or wrinkle of the tape has
the screw (C) tilt adjust on the
until It disappears, as shown in
4. Reconfirm the A/C head height.
A/C
posItron
of
guide.
(B).
occured, slrghtlyturn
head ass’y clockwise
Fig.
6
(B)
(BAD)
Fig. 6 Tape Guide Check
3-4
Page 32
c. Audio azimuth adjustment
I,
Playback the alignment tape
2.
Connect the channel-l scope probe to TP804.
3. Adjust screw
level. (See Fig.
(B)
vertically to
4)
(ST-N1
achieve
1
maxrmum
audro
d. A/C head position (X-Point) adjustment
2. Linearity adjustment
(S,%guide
adjustment)
Test
Pornt
:
TP302
(Envelope)
TP202
(H’D
SW Pulse
Test Taoe : (Mono
Scooe
;
7KHz)
rollers
-Trigger)
Playback the alignment tape (
1.
Connect the
2.
Connect the CH-2 scope probe to
3.
trigger head switchrng pulse.
Set the tracking preset to “6 5 ms”
4.
button
Connect the CH-1 scope probe to TP302 and the CH-2
5.
scope probe to
Turn the screw
6
Insert the adjusting driver
7
gear Adjust the driver in
envelope waveform.
NOTE : Since the adjusting gear unit may be damaged,
do not adjust by force when adjusting the X-point using
adjusting driver (+). After turn the X-point adjusting
screw(D) counterclockwise a little, preform the adjustment
After adiustiment is completed, tighten the screw.
CH2
PROBE
H’D
SIW
PULSE
TP202
CHI PROBE
CTL PULSE
TPZOI
CH-1
scope probe to
A/V
of remote control. (Refer to
TP202
trrgger on CH-1.
(E)
counterclockwrse (See
ST-Nl).
TP202.
TP201
using
(+) Into
X-positron
erther drrectron
and
the tracking
Fig.
7 and
8)
Frg. 4).
adjustrng
for maxrmum
the
Fig.
9 Location of Test Point
1 Playback the alignment tape (Mono
2. Observe the video envelope signal on an oscilloscope
triggered by the head
3. Make sure the
mum or maxrmum output) meets the
shown In
NOTE
:
a=Maximum output of the video RF envelope.
b=Minimum output of the video RF envelope at the
entrance side.
c=Minimum output of the video RF envelope at the
center point.
d=Minimum output of the video RF envelope at the exit
side.
video
Frg.
10. If It does not, adjust as follows
(Main
PCB)
Sccope
swrtchrng
envelope waveform
pulse.
specrfrcatron
;
SP)
(In Its mrnl-
;
Frg.
7 Tracking Preset Adjustment
REMOTE
BUTTONS
I
CONTROL PULSE MOVEMENT
I
A
Tracklng
.d
PUSH
Fig. 8 Control Pulse Adjustment
I
b,dla 2
0.70
c/a 2
0.85
Fig.
10 Envelope Waveform Adjustment
3-5
Page 33
4. If the section A in Fig. 11 does not meet the
specification, adjust the S-guide roller up or down
5.
If the section B in Fig. 11 does not meet the
specification, adjust T-guide roller up or down.
Slightly loosen the set screw at the lower part of the
6
S, T-guide rollers with a (Hex Wrench the guide roller can be adjusted with reasonable
tightness. (Refer to Fig. 12)
0.9mm)
so that
Frg.
11 Adjustment Points
SET SCREW
Frg.
12
7. Playback the alignment tape (Mono Scope ;
8. Connect an oscrlloscope CH-1 to TP302 and CH-2 to
TP202
ENVELOPE
--H----
L
IDEAL ENVELOPE
9. Turn the
10. After the adjustment IS completed, tighten the set
on the same PCB for
driver to
Frg.
1
obtain
13.
screws
-GUIDE
l==I
tnggerrng.
gurde
roller heads with a flat head
flat video RF envelope as shown
ROLLER
SP).
(a)
screw
In
“s”
HEIGHT
TOO HIGH
GUIDE ROLLER
Fig. 13 S, T-Guide Roller Height Adjustments
IS)
HE3
“S”
HEIGHT
TOO LOW
3-6
TOO HIGH
“T”
HEIGHT
TOO LOW
GUIDE ROLLER
(T)
Page 34
3. Check for transitional operation from
R.P.S
play
Check transition from
a prerecorded SP tape, make sure the entrance side of
envelope comes to an appropriate steady state within 3
seconds as shown in Fig. 14.
R.P.S
mode to play mode, using
to
5 Tape wrinkle check
1. Run T-l 60 tape in playback, FPS, RPS and
the pause mode and observe tape wrinkle at each
guide.
2. If excessive tape wrinkle i‘s observed in the mode shown
below, perform the associated adjustment shown below.
If the envelope wavdorm does not reach
specified
peak-to-peak amplitude within 3 seconds, adjust
as follows
1.
Make sure there is no gap between the supply roller
lower flange and the
supply guide roller again.
2. Change operation mode from the
mode again and make sure entrance side of envelope
rises within 3 seconds.
Fig. 14
:
tape.lf
there is a gap, adjust the
R.P.S
to the play
Video envelope rising when operation mode
is switched from
RPS
to play mode.
a. Playback mode
-Tape wrinkle at the S,T-guide roller section : Linearity
adjustment.
-
Tape wrinkle at tape guide flange : A/C head assembly
coarse adjustment.
4. Envelope check
1.
Make recordings on T-l 20 and T-l 60 tapes, and make
sure the playback output envelope meets the
specification as shown in Fig. 15.
2. Playback a self recorded tape (recording made on this
unit), (with a T-l
specification as shown in Fig. 15. In SLP mode,
should be same as
the upper cylinder should be checked.