Sony D-5 - Section 2: Disassembly and Reassembly; 2-1. Disassembly; 2-2. Mechanical Section Reassembly; 2-3. Mechanical Adjustments

| D-5/D-50
D-5/D-50
PICK-UP BLOCK (KSS-110A) on page 4.
Eee NOTES ON HANDLING THE eae
ATTACHMENT OF FLEXIBLE BOARD
center line of post
center line of board
flexible board
@ Stick double-sided (cooneciee to FOP
adhesive
tape
2-axis
device
)
8 Confirm that this face (lower face)
does not touch bottom face of chassis.
2] Stick flexible board vertically with
double-sided adhesive tape to bottom
face of chassis while facing the center of
flexible board and that of post as illustrated.
(If not, flexible board may be touched to
bottom of chassis./
SLED MOTOR
Note: Sled motor should be
installed at the position
where gear C engages
with the center of rack.
sled motor (M902) e
BLU
flexible board
i installing 3 RN (cenrente? to FOP
hole 2-axis device
limit switch (S903)
:
precision
screw
(Lock
the
screw)
terminal
P2x3
Solder lead
wires on the
installing-hole
side of terminal.
rack
gear C
C5] Engage rack and gear @ and lock screws ®
and © while pushing sled motor in the
direction of arrow (at a right angle against rack) (7) Check backlash (Refer to page
Insert flexible board from
FOP in the position as illustrated.
@ Stick cushion and
fix lead wires.
OGear C should be engaged
with the center of rack.
Tighten screws M1.4 x 4
(three} temporarily.
32).
with about 300 g tension. + Fabs sled motor response (Refer to page 32).
© Lock screw @ firmly.
Lock screws ® , @ and @
with locking compound.
2-3. MECHANICAL ADJUSTMENTS
Backlash Check
Measuring Locations:
Outer circumference: Where dimension A in the
figure at right (space bet-
ween FOP and press plate
B) is 3-5 mm.
Middle: Location where gear C engagement point
is at the center of the rack.
Inner circumference: Where dimension B at right
(space between FOP and re-
tainer A) is 3-5 mm.
Measuring Procedure:
1. Apply 3 V to sled motor lead and move the
FOP to the measuring location.(Refer to figure).
At each measuring location, check that there is
no movement in the directions of the arrows retainer B
marked @. and @ when 50g is applied to a
fan-shaped tension gauge.
If there is movement, sled motor mounting
should be redone. (Refer to page 31, Sled
Motor Assembly.)
Switch position | Direction of movement | Switch position | Direction of movement
inner to outer
circumference
Sled Motor Response Check
If the following check is not satisfied, replace the
sled motor (M902).
@ Minimum Activation Voltage Check.
1. Apply 1.5 V and check that the FOP moves
smoothly from the inner to the outer circum-
ference.
Next apply 2 V and check that the FOP moves
smoothly from the outer to the inner circum-
ference.
@ Sled Sending Current Check
1. Apply 3 V and move the FOP from the inner-
most to the outermost circumference. Check
that current value is less than 120 mA at this
time.
Next move the FOP from the outermost to the
innermost circumference. Check that current
value is less than 150 mA at this time.
@ Sled Sending Time Check
Apply 3 V, and check that the time for the FOP to
move from the innermost to the outermost cir-
cumference and from the outermost to the inner-
most circumference is less than 5 seconds each.
Switch position | Direction of movement
inner to outer outer to inner
circumference
circumference
8
retainer A
regulated voltage
DC3V
stabilized voltage