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SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.86700
2003/04
MECHANISM ASSEMBLY
86700
2003
04
DVC MECHANISM
VHS-C MECHANISM
VHS MECHANISM
TABLE OF CONTENTS
1
JIGS AND TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
<DVC MECHANISM>
<VHS MECHANISM>
<VHS-C MECHANISM>


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1-1 (No.86700)
SECTION 1
JIGS AND TOOLS
1.1
TOOLS REQUIRED FOR ADJUSTMENTS
Fig.1-1-1
1. Torque driver
Be sure to use to fastening the mechanism and exterior parts
because those parts must strictly be controlled for tightening
torque.
Torque setting value of torque driver is limited. At the values
over the maximum torque setting value, fasten a screw
manually not to damage the screw thread.
2. Bit
This bit is slightly longer than those set in conventional torque
drivers.
3. Tweezers
To be used for removing and installing parts and wires.
4. Chip IC replacement jig
To be used for replacement of part.
5. Slit washer installation jig
To be used to install slit washers.
6. Cleaning cloth
Recommended cleaning cloth to wipe down the video heads,
mechanism (tape transport system), optical lens surface.
Torque driver
YTU94088
1.
Bit
YTU94088-003
2.
3.
Chip IC replacement jig
PTS40844-2
4.
Tweezers
P-895
Slit washer installation jig
YTU94121A
5.
6.
Cleaning cloth
KSMM-01


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(No.86700)2-1
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 DVC MECHANISM
2.1.1 Precautions
(1) When fastening parts, pay careful attention to the tighten-
ing torque of each screw. Unless otherwise specified, tight-
en a screw with the torque of 0.055 N·m (0.56 kgf·cm).
(2) Be sure to disconnect the set from the power supply before
fastening and soldering parts.
(3) When disconnecting/connecting wires, be careful not to get
them and their connectors damaged.
(4) When replacing parts, be very careful neither to damage
other parts nor to fit wrong parts by mistake.
2.1.2 Notes on procedure for disassembly/assembly
The disassembling procedure table (Fig. 2-1-10 on page 2-4,a
part of the table is shown below for reference)shows the proce-
dure to disassemble/reassemble mechanism parts.
Carefully read the following explanation before starting actual
disassembling/reassembling work. The item numbers(circled
numbers)in the following explanation correspond to those ap-
pearing under respective columns of the table.
*1 Numbers appearing in this column indicate the order to re-
move parts. When reassembling, follow these numbers in
the reverse order. Circled numbers in this column corre-
spond to those appearing in drawings of this section.
*2 This column shows part names corresponding to numbers
in the left column.
*3 The symbol (T or B)appearing in this column shows the
side which the objective part is mounted on.
T =the upper side, B =the lower side
*4 Symbols appearing in this column indicate drawing num-
bers.
*5 This column indicates parts and points such as screws,
washers,springs,and others to be removed/fitted for disas-
sembling/reassembling the mechanism. Besides such the
parts, this column occasionally indicates working points.
Example
· Remove (W1)=Washer W1.
· Remove the solder at (SD1)=Point SD1.
· Disconnect A = Connector A.
*6 Numbers in this column represent the numbers of notes in
the text.
(For parts that need phase adjustment after reassembling,
refer to "MECHANISM ADJUSTMENTS".)
*7 This column indicates required after-disassembling/-reas-
sembling work such as phase adjustment or mechanism
adjustment.
NO.
PART NAME
FIG.
POINT
NOTE
REMARKS
[1]
[2]
[3]
[4]
[5]
[6]
CASSETTE HOUSING ASSY
T
Fig.2-4-3
3(S1),(L1a)-(L1e)
NOTE 1 a,b,c,d ADJUSTMENT
UPPER BASE ASSY
T
Fig.2-4-4
(S2),(L2a),(L2b)
NOTE 2
DRUM ASSY
T
(S3a),2(S3b)
NOTE 3 a,b
REEL DISK ASSY(SUP)
T
Fig.2-4-5
(W4)
(W5a),(W5b),(W5c)
(W6),(S6a),2(S6b)
NOTE 4 a
REEL DISK ASSY(TU)
T
NOTE 5 a,b
REEL COVER ASSY
T
NOTE 6
ADJUSTMENT
*1
*2
*3
*4
*5
*6
*7
Example
P= Spring
W= Washer
S= Screw
* = Lock (L),soldering (SD),shield,connector (CN),etc.


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2-2 (No.86700)
2.1.3
DISASSEMBLY AND ASSEMBLY OF MECHANISM ASSEMBLY
2.1.3.1
General statement
The mechanism should generally be disassembled/assembled in
the C.IN mode (ASSEMBLY mode). (Refer to Fig. 2-1-1,2-1-2.)
However, when the mechanism is removed from the main body,
it is set in the STOP mode. Therefore, after the mechanism is re-
moved from the main body, supply 3 V DC to the electrode on the
top of the loading motor to enter the mechanism mode into the C
IN mode compulsory.
<Mechanism assembly/Cassette housing assembly>
Fig.2-1-1
<Back side of the mechanism assembly>
Fig.2-1-2
2.1.3.2
Explanation of mechanism mode
The mechanism mode of this model is classified into five modes
as shown in Fig. 2-1-9. Each mechanism mode can be distin-
guished from others by the relative position of " ", " ", " ", " "
marks on the sub cam gear to the inner or outer protrusion on the
main deck.
Refer to Fig. 2-1-3 to 2-1-8 below.
Fig.2-1-3
Fig.2-1-4
Fig.2-1-5
Fig.2-1-6
Fig.2-1-7
Fig.2-1-8
LOADING MOTOR
DC3V
Back side of deck
C IN mode
<SUB CAM GEAR>
TOP VIEW
BOTTOM VIEW
<C IN mode>
<SHORT FWD mode>
<STOP mode>
<REV mode>
<PLAY mode>


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(No.86700)2-3
2.1.3.3
Mechanism timing chart
Fig.2-1-9
EJECT LEVER
PARTS
MODE
ON
EJECT
RELEASE
-15
o
(27.14
o)
(84.08
o)
(97.35
o)
(182.10
o) (185.63o)
71
o
0
o
-13
o-3o
3
o
68
o
215
o
212
o 218o
257.3
o
254.3
o 260.3o
295
o
-12.40
o
(22.44
o)
(69.53
o)
(80.5
o)
(150.58
o) (153.5o)
58.71
o
0
o
177.79
o
212.77
o
243.94
o
-16.97
o
(30.71
o)
(95.14
o) (110.06o)
(206.06
o) (210.05o)
80.34
o
0
o
243.29
o
291.16
o
333.82
o
292
o
310
o
74
o
L. END
LOCK
OFF
TU ARM
ON
OFF
SLIDE DECK
LOAD
UL
BRAKE (S)
ON
OFF
BRAKE (T)
ON
OFF
RELEASE
LEVER
ROTARY
ENCODER
MAIN CAM
SUB CAM
ON
a
OFF
CTL PLATE
C
R
L
TENSION ARM
UL
L. END
OFF
PAD ARM
UL
L. END
LOAD
SUP. L. ARM
UL
L. END
LOAD
TU. L. ARM
UL
PRESS
LOAD
P. ROLLER
UL
b
c
C IN
SHORT
STOP
PLAY
REV
FWD
TU. P. B
START
TU. P. B
END
SLIDE
START
SLIDE
END