Philips VR705/02 - Page 65

4. DRIVE ASSEMBLY
This tape deck has three motors; one providing precision drive for
the scanner unit; the second providing direct drive for the capstan
and belt drive for the reel tables; the third motor drives the lift and
tape threading/dethreading operations.
Special features are:
Quick start
Short winding time
Automatic cleaning of video heads by cleaning roller
To
obtain
a
high
repair
standard
we
have
developped
a
range
of
service
kit's.
These
kit's
covers
the
spare
parts
which
are
engaged
together.
The tape deck’s sensors are located on the motherboard
underneath the tape deck, and included in its circuitry, lay out
and parts list.
4.1 Deck parts replacement
The
procedure
for
the
removal
and
refitting
of
the
following
parts
is
described;
only
the
lift,
the
scanner,
the
capstan
motor
and
the
A/C
head
are
fixed
by
screws.
All the other deck assembly parts are held only by snap hooks.
For
the
replacement
of
parts
on
the
underside
of
the
tape
deck,
remove
the
tape
deck
from
the
motherboard.
Manual extraction of cassette:
If, after the Eject button has been pressed, the drive does not
unthread and eject the cassette, the dethreading/eject operation
can also be carried out manually by turning the wheel at the rear of
the threading motor.
fig. 1
IMPORTANT:
After each repair has been carried out in the drive assembly, the
first operation after repairing must be to bring the cassette
compartment into ,eject* position by hand.
Auxiliary tools for deck adjustment:
Tool for removing the head disc 4822 395 90977
Tentelometer
Tentelometer 4822 395 90584
— ———
Tool
for
tapetension
adjustment
4822
395
50188
Handle 4822 256 90493
Torquemeter:
600 gf-cm 4822 395 90232
90 gf-cm 4822395 80196
44
= z
:
Post adjustment screwdriver 4822 395 50275
Testcassette 4822 397 30103
Nylon gloves 5322 395 94022