VCR: end
Some general information.
Disassembly:
1. Remove cover (unscrew the screws, and lift the back, move
away ...);
2. Remove the cover (carefully with a screwdriver
raise the top two latches and push
the upper part of myself, almost put vidak
on the back and consistently otginat
three lower latch panel tyanuv panel
withdrawal);
3. Remove the bar strength (remove the two
screws at the edges of the hull, and screw the elevator);
4. Remove the mechanism (lift off by unscrewing
Two rear its propeller and throwing it over the back of the
lever, then unscrew the center-front and 2 rear screws of the
left screwed shield wire, carefully
pull from the connector board cable and video heads, holding
the sides of the mechanical unit, uniformly pick it up, will be
a tangible effort, because it was inserted into the slots the
board);
5. Remove the power supply unit (unscrew the top 2 screws,
one lower, the board, and gently vertical lift unit, he is
released from connector board);
6. Remove the board (unscrew 2 screws on the back panel,
press the plastic tab at front panel and lift the board, press
three lateral fastener, lifting charge, and then
lift her back - the panel).
Number of screws may be different. Unscrew the screw holding
the RF module, it is useful only if it zamene.Dlya check power
supply network with fasteners in the tail housing need to pull
up before removing block (and indeed for the sake of
convenience), in other cases it is enough to bend it to access
to the screw and the block after removing the tilt of the
korpus.Lift can not shoot separately (at removal mechanism,
although it is more convenient to do this), if a user has
access to central screws holding the mechanism. Or
can be accessed by pushing the receiver
cassettes (if not jammed), but if the tape inside, and it just
does not vynesh have to rent a lift, gently releasing the film
from mehaniki.Poryadok some action can be changed.
Lift mechanism connected to the main mechanics of one cog.
If you rotate it, you can see the whole cycle of loading and
unloading cassettes, but you should click on the two side
handles cassette (simulating the presence of cassette) to
unlock the boot. For checking, cleaning and lubrication, you
can also open the main wheel load (unscrew single screw at the
side of the elevator, press 4 latch and remove the mounting
rail). If need to extract the wheel (the mechanism is very
reliable, and if its twist is not broken, but gets stuck in a
maze of wheels, skipping stops, and in the future will not work
properly until the place can not put everything), it is
necessary to remove the lever opening the lid (Click on it,
front, pressing the right so he climbed on the back stop, then
move to the outer turning radius clamp removing the lever from
the axis). In the initial position elevator (no cassette is
inserted), the aperture wheel load coincides exactly with the
hole mounting bracket and a plastic housing
lift. After loading the cassette wheel yet
can whirl idle, but in extreme
provisions of the loading / unloading stress limit for the
transmission gear is very large.
Undoubtedly, the mechanism of the device
One of the best!
If you look at the block in front (from a cassette is
loaded), above, then right (From the video heads and the right
audio / sinhrogolovok) will control the motor and the main
control mechanism (regulator closed plastic cover). You can see
a window where seen gear on the motor shaft
management. If (a screwdriver), turn it
from right to left, then the mechanism will return to its
original position, if left to right - in the final, but in any
case, this a very long process, because the rotation is
transmitted through the gearbox. In the initial position
mechanism of the transfer pinion connects the drive motor with
gear for loading / unloading, which relates to the elevator
gear and causes it to work. In other cases, this relationship
is absent, and the drive the engine runs only rewind and
forward feed. Consequently, the assembly must display and an
elevator, and a control mechanism in original position, for
logically consistent with all mechanical linkages. For it is
enough to scroll gear elevator in a clockwise direction (when
inverted elevator) to stop (see also above its original
position lift) and scroll right to left Gear motor control, but
it stops would not be here, the effort will increase gradually,
and to nothing to roll, it is necessary know the starting
position. Initially, the reliability of the existing mechanical
communication (see above), and for this reason, we can assume
that the mechanism is ready for assembly. At the same time
rubber roller should be at the top and underneath disklabirint
rotated so that its ragged jagged edge closer to you, and
strictly under its axis, and if they are mentally
together, will be a vertical bar. If
turn the mechanism, we can see that
central optoprovod 1 mm from the stop
toothed bar (the end position stop
will have on the back of his hand).
It is interesting to note that the home (far) position of
the mechanism is not the initial position when you turn on
Vidic. When inclusion of a mechanism located in the following
position (after the original), when the mechanical connection
with the elevator otsutstvuet.Eto done to make it easier to
insert the cassette, and in this effort is not transferred to
other mechanics, but as soon as the cassette is inserted deep
enough, the sensor works (Pin, right on the board) that
controls the mechanism will be released in its original
position, connecting kinematically drive motor with an
elevator, and has the drive motor load cassette. After which
the mechanism will move to the following positions, breaking
contact with the lift and eliminating the possibility of an
incorrect discharge cassette tape when it is not rolled back.
Now consider the phase control mechanism, since the original
provision and to finite. At the same electronics determines
position of the mechanics of the sensor (D) with five
contacts on the disc are also transferred to the rotation
control mechanism.
Mechanism controls the following units:
2e snakes (2eZ) and wrapped tape around
head, pull the stem (HS), displaying the tape to the desired
position, forcing the stem (GS) combined with a slowdown of the
pickup site and performs support functions; rubber roller (PP),
presses the tape to the axis direct drive (drive motor); brake
supply unit (TPU), limits the independent (inertia) rotation,
the 1 st and 2 nd Brakes host site (TSS), similar
the previous function; drive elevators (PL), by
essentially a cog that connects the kinematic
chain with an elevator; brake actuating motor
(SST), slows it to improve
stability of the ribbon supply; record locking (BZ), a lead
tongue tester window write protect the tape.
Maybe somewhere I made a mistake and did not understand the
exact purpose of phase and position of parts in all cases, the
clutch protects the kinematics overload (with stopper, the end
of tape etc.), allowing one part of the scheme to rotate
independently from each other. Some phases, may not be used or
are control (to determine the mobility and transfer mechanism),
since, like, not change the state of mechanics. Some phases,
probably help to define the transition from
phase to phase, depending on the direction
management (from an initial position to the end, or vice versa)
because play mechanics not unambiguously determine the shift
neighboring phases in both cases. Determine
fully all the options have no time, and maybe not immediately,
this file will be added to true action.
I have for each phase state encoder mechanics as two groups
digits, the first combines closed contacts,
and the second one free. Each contact can
either be free from the rest, or closed with the other (s), no
two independently closed groups of contacts. Of course, I could
mistaken as to inspect the sensor and the mechanics of a few
revolutions controlling the engine, but I do not remember how
many, and I do not remember the order by contact sensor, but it
would be easy to determine, one of two things ...
Phase 1: starting position.
2eZ, HS, OR, located along the edge
magazine (inside its outline), PP raised (over
Audio / sinhrogolovkoy), TSS inhibit, TPU is released (it helps
pull up the tape before it is unloaded), SST is released, the
submarine is connected, BR pressed. W: [1235 -4].
Phase 1.5: Interim ...
All the same, but the D: [123 -45].
Phase 2: off, without the cassette.
2eZ, HS, OR continue along the edge of the cassette, the RR
is up, the TSS one brake, the other brakes, TPU released, SST
released, PL disconnected, BZ half free. W:
[13 -245].
Phase 2.5: Interim ...
Almost all of the so-zhe.Odin TSS slows, the other not, BZ
free. W: [135 -24].
Phase 3:
definition of write protect the tape.
2eZ, HS, OR along the edge of the cassette, the RR is up,
the TSS one brake, the other not, TPU released, SST released,
the submarine is disconnected, BZ is free, In general, the
phase of 2.5, only the D: [13 -245].
Phase 3.5: Interim ...
All the same, but the D: [0 -12345].
Phase 4: belt tension.
2eZ, HS, OR, are set in motion and output
tape over the edge of the tape, the RR is up, the TSS
one brake, the other not, TPU released, SST
released, the submarine is disconnected, free BZ, W:
[12 -345].
Phase 4.5: Interim ...
All the same (2eZ, HS, OR continue to move), but W: [125
-34].
Phase 5: The output tape.
2eZ, HS, OR, advanced from the cassette tape,
RR is up, the TSS both brakes, the TPU is released,
SST is released, the submarine is disconnected, depressed BR, W:
[12 -345].
Phase 5.5: Interim ...
All the same (2eZ, HS, OR continue to move), but the D: [0
-12345].
Phase 6: The tape is almost in position.
2eZ and GS keep the tape from the video heads, HS
took his way to the edge of the tape (probably)
RR is up, the TSS one brake, the other not,
TPU released, SST released, the submarine is disconnected, BR
pressed, W: [23 -145].
Phase 6.5: Interim ...
All the same, but the D: [0 -12345].
Phase 7: The tape in position.
2eZ obtyanuli tape around the video heads,
VSH fully took its edge tape, OR bit limited belt tension and
slows down the TPU, TSS released, RR begins omitted, SST
released, PL nesoedinen, BR pressed, W: [23 -145].
Phase 7.5: Interim ...
All the same (RR moves), but W: [234
-15].
Phase 8: fixation tape.
2eZ keep the tape around the video heads, school runs into a
little stretched tape WAS holds its edge tape, PP omitted TPU
brakes, TSS released, SST released, PL disconnected, BR
pressed, W: [2345 -1].
Phase 8.5: Interim ...
All the same (RR moves), but W: [234
-15].
Phase 9: relaxation tapes.
2eZ keep the tape around the video heads, school is not
limited by the tape (probably, or not rests heavily), VSH keeps
its edge tape, PP falls, TPU, TSS and TPM released, PL
unplugged, BR pressed, W: [34 -125].
Phase 9.5: Interim ...
All the same (RR moves), but the D: [345
-12].
Phase 10: Stop.
2eZ keep the tape around the video heads, school, a little
stick to it, holds Sunday school its edge tape, PP omitted and
cuddles tape, TPU, TSS and TPM freed, the submarine is
disconnected, depressed BZ, W: [34 -125].
Phase 10.5: Interim ...
All the same, but the D: [234 -15].
Phase 11: The fast playback.
2eZ keep the tape around the video heads, school rests on
the tape, HS retains its edge tape, PP moves to the drive shaft
(Probably), TPU brakes, TSS and TPM freed, the submarine is
disconnected, BR free (perhaps made a mistake and pressed), W:
[24 -135].
Phase 11.5: Interim ...
All the same, but the D: [245 -13].
Phase 12: pause playback.
2eZ keep the tape around the video heads, school rests on
the tape, HS retains its edge tape, PP moves to the drive shaft
(Probably), TPU hinders, impedes a TSS,
the other is released, the TPM is released, the submarine is
disconnected, BR free (probably made a mistake, pressed)
W: [24 -135].
Phase 12.5: Interim ...
All the same, but the D: [0 -12345].
Phase 13: The pullback after rewinding.
2eZ keep the tape around the video heads, school rests on
the tape, HS retains its edge tape, PP pinned to the drive
shaft (probably), inhibits the TPU, the TSS one brake, the
other not, the TPM is released, the submarine is disconnected,
BR semifree W: [45 -123].
Phase 13.5: Interim ...
All the same, but the D: [0 -12345].
Phase 14: The playback.
2eZ keep the tape around the video heads, school presses the
tape to civilization rubbing the head, Why TPU slows progress
and inhibits the back VSH keeps its edge
tapes, TSS and TPM released, RR pinned to the drive shaft, the
submarine is disconnected, BZ is free, W: [25 -134].
Phase 14.5: Interim ...
All the same, but the D: [0 -12345].
Phase 15:
may pause playback.
2eZ keep the tape around the video heads, school presses the
tape to civilization rubbing the head, TPU and slows progress
and inhibits the movement back, holding his VSH
edge tape, released the TSS, PP pinned to the drive shaft, SST
chilled, PL disconnected BR is free, W: [23 -145].
Phase 15.5: Interim ...
All the same, but the D: [235 -14].
Phase 16: a hell knows ...
2eZ keep the tape around the video heads, school presses the
tape to civilization rubbing the head, TPU and slows progress
and inhibits the movement back, holding his VSH
edge tape, released the TSS, PP pinned to the drive shaft, SST
chilled, PL disconnected BR is free, funny - the same state
as in phase 15, but W: [23 -145].
Phase 16.5: Interim ...
All the same, but the D: [0 -12345].
Phase 17: break the record.
2eZ keep the tape around the video heads, school presses the
tape to civilization rubbing the head, TPU and slows progress
and inhibits the movement back, holding his VSH
edge of tape, the TSS one brake, no arc,
RR pinned to the drive shaft, SST chilled,
PL disconnected, BZ is free, W: [35 -124].
Phase 17.5: Interim ...
All the same, but the D: [0 -12345].
Phase 18: the final position.
2eZ keep the tape around the video heads, school presses the
tape to civilization rubbing the head, TPU and slows progress
and inhibits the movement back, holding his VSH
edge of tape, the TSS one brake, no arc,
RR pinned to the drive shaft, SST released, PL
disconnected, the BR is free, W: [15 -234].
In the final position of the labyrinth disc
(Over which the PP in the original position) turned almost 360
°, without two teeth of a full turn (around). All phases
listed and identified on the basis of my
brevity and memories that
partially distorted.
All the same - an umbrella term - almost
does not change the state of the kinematics, but some
intermediate, interfacial progress is still
there. Am feeling, I made a mess out there, especially the name
of the phase ... The fact that not reconcile with the status at
work, there was no time to such experiments. But something
like, clear.
For example, the changing of phases 1.5-> 1 - access to the
original position, and the 3.5-> 3 - the film is removed
inside. You can also select the transitions 17 -> 17.5, 16.5->
17, 16.5-> 16, there is a suspicion that the phase of 16 - a
record, but, of course, can err ...
Assembly: perform all the steps back
disassembly, keeping the initial position of pieces - certainly
during disassembly. Feature in that when you install the front
panel, when the mechanism is already installed, you need to
click on cover that it was open at the time of installation. A
panel is flat, not from the bottom up, and not vice versa,
while it is easy clicks. To verify the correctness push the
lever to open, it must lifts the lid. The panel has tongue
who gets on the main board and fixes part. If you try to put on
the bottom panel, the tab will depend on housing and the panel
will be very tight nalezat as would not break! After
installation check button (click on them a few times)
effort and the sound of firing.
Features.
If you removed the mechanism and the inclusion in the network
OPERATE LED blinks. If in good
press coverage of the sensor load and after a certain moment,
close photodiodes (perhaps with a certain sequence), then the
system will start pulling tape and verify its existence, and
then stop mode STOP, as in normal loading tapes. But not always
possible to cheat the system and the load control logic may be
different (and vysheopisanye action partly by accident),
because sometimes (probably when low light), it does not work,
or maybe just need to override the signal from the LED (it
might Pulse) and sometimes, after a "deceptive" boot, the tape
begins to play immediately, or I had got it wrong or forget ...
Direct drive belt (drive motor).
Fee (LG) GVC-027 B REV.1 (there is still
marking SH-SH8 94V-0). Chip LB1854 - 30
legs and flat, but not melkiy.Datchik Hall RPM (MR) R06P 721
feet from left to right (with 4 th to 1 st, probably)-OC, GND,
+ DU +5 V. Connector on the motherboard, the top number
(probably contacts 7,5,3,1): Vctl, FR, FG, Gnd ', bottom row
(Probably contacts 8,6,4,2): nc, Gnd, +5 V, +12 V. Gnd '-
separately for the ground (probably) comes only in Conder (and
Power - Forgot where), but Wiedicke suited to Gnd.
FR - forward / back, if 1 (+5) - one (a
where, I do not remember) side, if hanging, or 0
(GND) - to another. FG - frequency output with
amp mikruhi (such as through 4.7 ohms), analog, constant
voltage proportional to the perturbation of the magnetic field
at the sensor (Within a small range of the half power
namely, the level set by the sensor - about half), the system
takes the variable component: the main board
1 uF shares, and there is a noise filter
Conder to minus). 5V - control power supplied to all the Hall
sensors, motors are usually (3) no shunt Conder (Empty sites),
and they do not feed directly. The board has half the power
divider, yet managing a divisor defining the Conder, the
remaining filters, and 3 RC chain against the emission of the
windings.
Also there is a measuring shunt (4 parallel 1.8 ohms). There
are control points with signal names (for them it is convenient
to fuse together during the test). At 12V Wiedicke comes
forward voltage (unstable if from external 12V through a
connector, for example) 14B. In principle, this is only power
windings, only at work, and it may differ and fluctuate for a
security check engine (Without the rotor, for example, control
of permanent values) it is better not to connect it
food. Vctl - input speed control
analog, passes through 4.7 kOm.Pri exceeds a certain threshold
voltage, engine into operation and gradually unwound (non-load
stiffness), but limits the voltage regulation is very
small, and the excess does not result (speed does not increase).
When tested: 4.96 in power limit
inclusion of approximately 2.51 in (perhaps it is compared with
a divider), the saturation of approximately 3.21 V. During the
test (no load) food (through the lamp, I do not remember which)
dipped to around 10 V. 1 revolution per second = approximately
700 Hz. Limits FG (test constant displacement, the first
experiment repair) 0.78-3.18, average 1.28.
Hall sensor rotation (MR) is mounted on a single screw, teeth
at the edge of the sensor may for other models of engines.
The latest version of repair, when tested in the paper, we
measured parameters of the signal FG. Device VC9808. But this
device clearly floods the signal at a frequency of 400 Hz (the
limit on the passport for measurements of AC). In any case, the
value AC voltage at the limit of 20V was
greatly underestimated at high speed, and the
limit 2V fell slightly, although the error I do not rule. For
example, when playing was going to 1.84, while quick Rollback
0.33 (limit of 20V). So here measurements at the limit of 2V.
Constant voltage ranged from
2.47 to 2.63 per pulse, but usually was 2.55 + - one hundredth
volt. Next rounded In and kHz signal FG.
The amplitude mode frequency
PLAY -> 1.93 1.525
PLAY 2x -> 1.88 3.05
Acceleration PLAY -> 1.53 11.0
Hold UCSC. -> 07.01 17.06
Acceleration PLAY <- 1.56 10.3
Hold UCSC. <- 1.10 8.15
Rewind early. -> 1.76 0.152
Fast-founded. -> 1.92 3.15
Fast-con. -> 1.26 0.150
Rewind early. <- 1.83 4.32
Fast-founded. <- 0.93 19.31
Fast-con. <- 1.83 4.28
Loading / unloading of 0.8 - 1.7 0.97 - 6.3
But one should take into account the uncertainty and
possible error (confusion). So, fast forward, rather in 0.92
and not 1.92 V. The frequency depends on the load (distribution
tape), but when you play, of course, stabilna.Hotya I swam it
(+ 8Gts) but because deviation has been slow, the final
detonation was weak and inconspicuous, perhaps it is also error
in the tester (The error of reference samples). Let me remind
you and such a feature as the acceleration / deceleration. When
playing and you press rewind. In this rapidly played film
(without sound, as the regime PLAY 2x), and when you hold down
rewind (About a second, lower back), there is a fast promotka
(no pictures, of course), but when released to return to PLAY.
If same rewind mode STOP, the film
after a few seconds of normal fast switches to a fast (maximum,
probably) speed, and shakes so until long as there is little of
the film (on the eye about 4 mm layer), then enters the smooth
- a normal winding up before the end of the tape. If the tape
has ended forward, rewind starts, if
ended Rewind, there is a rollback of the film in advance (about
1 kHz) and ejection tapes (but, apparently, only when
film rewind completely). During
Cassette ejection and loading speed and amplitude of the FG
range, and provides an example predely.Kazhetsya them, I messed
up the amplitude at rewind, and perhaps back rate immediately
most (or maybe it depends on the tape
or distribution of the film). If it is the case again compete
testing their skills (shielded wire Soldered to motherboard
Motor control points and to measure at work ...) and adjust
data and the text.
Text, perhaps, when something will be updated and
adjusted, including the correction
errors, and until this is all already 05/10/2004!
KSA-7G
