Alpine DP-S Series User manual

SERVICE
MANUAL
ZILPIN
CD Player Mechanism
ADDENDUM & REVISED (III)
Se -SSERIES

DP-S SERIES
Contents
Mechanism Function Description -<<rrcc cece treet ree eee ener e ee eee ener e cnr tebe enn E etn Een tenes 3
Disassembly Instructions
(For DP24A010/DP24A020/DP24A110/DP24A11A/DP24A210 models) crrrte reece eter teeter enes 11
CD Mechanism Assembly Parts List
(For DP24A010,/DP24A020,/DP24A110/DP24A11A/DP24A210 models) ccrrer rete ester ee eee eee 15
Exploded View (CD Mechanism)
(For DP24A010,/DP24A020,/DP24A110,/DP24A11A,/DP24A210 models) crest sree treet tere eee e eens 17
CD Mechanism Assembly Parts List (For DP24A220 model) cerrer rer rr eet eet e eee teen nee nee e eee nes 19
Exploded View (CD Mechanism) (For DP24A220 model) crrttrtee settee reenter ettenee eect nnn n ee eeeet anes 24
CD Mechanism Assembly Parts List (For DP22A070,/DP22A080 DP22A310/DP22A320 models) -::-- 23
Exploded View (CD Mechanism) (For DP22A070/DP22A080 DP22A310,//DP22A320 models) <«rrcreees 25
Disassembly Instructions (For DP22A070 “DP22A080 DP22A310,/DP22A320 models) vrrrtrttt rere eee 27
to
to
to
to
to
to
to
to
10
14
16
18
20
22
24
26
29

Mechanism Function Description
Function
LOADING
(of a 12cm CD)
Clamper
Description
The beam to the photo sensor (A) will be broken when a disc is in-
serted into-the loading position.
The mechanism detects the disc insertion and actuates the Loading
motor to rotate. The rotation of motor is transmitted to the drive
(B) and (A).
roller through gears (E), (D),
The disc will be pinched between the drive roller and the upper guide
and pulled into the mechanism.
The disc reaches to the sensor gate mechanism. The beam to the
is broken, and simultaneously the micro-processor
discriminates 12 or 8cm CD size depending on the photo sensor (B).
is broken, the micro-processor
detects that the disc is a 12cm CD and it continues feeding the disc.
photo sensor (D)
If the beam to the photo sensor (B)
Sensor Gate Mechanism
Photo Sensor (D)
Solenoid Arm
Solenoid
a
Photo Se B
nsor (B) ee
x
8cm Disc Eject Position en ee
ur alae Photo Sensor (A)
12cm Disc Eject Position
Figure 1
Drive Roller
Gear (A)
DP-S SERIES
Illustration
Figure
Figure
Clamp End Switch
Cam
Photo Sensor (C)
Loading Motor
Figure 2
Cam Gear
Gear (D)
Gear (E)

DP-S SERIES
Function Step Description Ilustration
LOADING The disc touches the left and right stopper pins, and push them by
(of a 12cm CD) the feed mechanism. By pushing the stopper pins, the left and right
lock levers rotate and the lock pins remove from the lock position of
the guide holes.
ok
The disc touches the disc stopper and moves the unlocked sensor gate
. . ; Figure
to the outer direction by the feed mechanism.
If the disc reaches to the end position, the beam reaches to the photo
sensor (B).
The mechanism detects that the disc is pulled into the chucking
_ : : Figure
position and starts chucking action.
Disc
Stopper
Lever
(B)
Left
lock
Lever
Arm Clamp Guide hole Lever (A)
Right lock Lever
;
Disc
Stopper
Reverse
Pin
Reverse
spring
Right stopper
pin
Left stopper pin
Photo Sensor
(B)
Photo
Sensor
(D)
Photo
Sensor
(B)
Left lock pin
Right lock pin
Figure 4
Figure 3

DP-S SERIES
Function Description Illustration
LOADING The same process as 12cm CD loading operation steps@~@. Figure 1
(of a 8cm CD) Figure 2
Figure 7
The disc reaches to the sensor gate mechanism. The sensor gate
mechanism moves depending on the disc insertion position at the disc
slot as follows.
A) When the disc is inserted at the center of the slot.
The disc touches to the disc stopper. The disc cannot push both
the left and right stopper pins, so that the locking pins cannot be
released.
The disc movement stops there.
B) When the disc is inserted at the deviated position to the left or
right from the center of the slot.
First, the disc pushes the left or right stopper pin. The disc cannot
push the another stopper pin, so that the locking pins cannot be
released. The disc moves by the shape of the disc stopper to the
center position and stops.
Figure 5
If the beam reaches to the photo sensor (B) and (C) when the beam
to the photo sensor (D) is broken by the disc, the mechanism
discriminates that the 8cm CD is in the chucking position, and starts
chucking action.
Figure 5
Only one (left or right) lock pin is released
Photo Sensor (D)
Lever (A) Reverse Pin
Figure 6
BhotS Sensor (B) Photo Sensor (C)
When a disc is inserted at the left from the center of the slot.
Figure 5

DP-S SERIES
psa wees
The mechanism detects that the disc is pulled into the Chucking
position and pulls the solenoid.
CHUCKING
The solenoid arm connected with the solenoid starts to rotate and
transmits the rotation to the cam gear.
The cam gear starts to rotate and engages with the gear (C) then the
driving power of the Loading motor will be transmitted to the cam
gear.
The rotating cam gear engages with rack, and moves the rack toward
the right. Pete
With the movement of the rack, the following functions will be
performed simultaneously.
. The clamper moves downward and chucks the disc. Figure 8
The drive roller moves downward and releases the disc pinched Figure 9
previously and moves the disc downward. Figure 10
Releases the locking on the pickup block and places the unit in the
floating status.
The rack slides to the right end and releases the engagements between
the gear (C) and the cam gear as well as the cam gear and rack, and} Figure 8
turns the clamp end switch on.
The mechanism detects that the clamp operation has finished, and the
Loading motor stops rotating. Figure 8
Clamper
Upper Guide
us Solenoid
Drive roller
Clamp End Switch
\ Cam Gear
Gear (C}
Rack
Loading Motor
Gear (A)
Figure 7

Lowered clamp position
Solenoid
Drive Roller
Gear (C)
Loading Motor
Cam Gear
Gear (A)
Solenoid Arm
Solenoid
Solenoid
Engaging Cam Gear
Gear
(C)
/
Solenoid
Arm
Q
Clamp
End
Switch
Engaging
Cam
Gear
Figure 8
Damper
Move with rack simultaneously
Floating Position
Spindle
Motor
Loading
Cam
Rivet Assembly
Trigger Lever
Servo Motor Reverse Pin
Cam shaft:
United with Loading cam
moves Trigger Lever.
Figure 9
DP-S SERIES

DP-S SERIES
PLAY The spindle motor rotates the disc. Figure 10
The rotation of the servo motor is transmitted to the shaft screw :
; Figure 10
through the gear, moves the pickup. ;
Figure 10
The Inner limit switch detects the lead-in position of the disc, and the
mechanism begins to read the information of the disc.
Shaft screw Floating status
Servo Motor
Inner limit switch Spindle Motor
Figure 10
EJECTION
(of a 12cm CD)
The solenoid arm engaged with the solenoid starts rotating and the cam gear
engages with the gear (C).
The cam gear rotates and engages with the rack and then moves the rack in the
left direction.
Engaging with the movement of the rack, the following functions will be performed
simultaneously.
The clamper moves upward and releases the disc.
The driving roller moves up and lifts the disc, and pinches the disc between
it and the upper guide.
Locks the pickup block.
The reverse pin moves with engaging the levers (A) and (B), which moves
the sensor gate mechanism to the original position.
When the rack moves to the left, the engagements between the gear (C) and the
cam gear, the cam gear and the rack will be released.

DP-S SERIES
Function Description
EJECTION
Cof a 12cm CD)
The disc which is pinched between the drive roller and the upper guide moves to
the outside of the mechanism. When the disc is sent out to the EJECT position,
the beam broken by the disc is released and reaches the photo sensor (B).
The mechanism detects that the disc has come out to the EJECT position and
stops the motor rotation.
The mechanism detects that all functions have finished when the disc is pulled out
from the mechanism and beam is passed through to the photo sensor (A).
RELOAD
lf
the
disc
is
not
pulled
out
from
the
mechanism
for
15
seconds
after
it
comes
to
(of
a
12cm
CD)
the
EJECT
position,
the
mechanism
actuates
the
Loading
function
steps
©
—
©.
EJECTION
(of a Bom CD) The same process as 12cm CD Eject operation steps O~@.
Engaging with the movement of the rack, the following functions will be performed
simultaneously.
A.
B. ir The same process as 12cm CD Eject operation step@ —A, B, C.
C.
The same process as 12cm CD Eject operation step ©.
The disc which is pinched between the drive roller and the upper guide moves to
the outside of the mechanism. The disc is released from the drive roller and stops.
If the beam reaches the photo sensor (C) after 1.5 seconds from starting ejection,
the motor stops.
The mechanism detects that all functions have finished, when the disc is pulled out
from the mechanism and beam is passed through to the photo sensor (A).

DP-S SERIES |
Function
TROUBLE
SHOOTING
(While Loading
a 12cm CD)
Description
_————
ee
—————
es
If
the
beam
to
the
photo
sensor
(D)
is
not
broken
within
3
seconds
after
the
Loading
motor
begins
rotating
as
described
in
the
Loading
operation
step
©,
the
mechanism
takes
it
as
trouble
and
rotates
the
Loading
motor
inversely
and
pushes
the
disc
out
to
the
EJECT
position.
(While loading a
8cm CD)
(While Chucking)
(While Playing)
(While Ejecting a
12cm CD)
(While Ejecting a
8cm CD)
In
the
Loading
step
@,
if
the
beam
does
not
reach
the
photo
sensor
(D)
within
3
seconds
after
the
beam
to
the
photo
sensor
(B)
is
broken,
the
mechanism
take
it
as
trouble
and
rotates
the
loading
motor
inversely
and
push
the
disc
out
to
the
eject
position.
If
the
disc
is
removed
and
the
beam
reaches
the
photo
sensor
(A),
the
mechanism
performs
loading,
chucking
and
ejection
without
a
disc.
(To
place
the
sensor
gate
mechanism
from
the
END
position
to
the
original
position
the
mechanism
operates
the
Ejection
step
©
—d)
When
the
disc
is
pulled
out
during
the
loading
process,
the
Loading
motor
rotates
inversely
and
stops
the
rotating
after
certain
seconds.
The same process as 12cm CD loading operation step®.
The same process as 12cm CD loading operation step@).
In
the
chucking
operation
(step
@)
if
the
Clamp
End
Switch
doesn't
turn
on
within
3
seconds
after
the
solenoid
is
pulled,
the
mechanism
takes
it
as
trouble
and
rotates
the
Loading
motor
inversely
and
pushes
the
disc
out
and
stops
at
the
EJECT
position.
When
the
disc
doesn't
come
to
the
EJECT
position,
the
motor
stops
the
rotating
after
certain
seconds.
After
disc
chucking,
if
the
mechanism
is
unable
to
read
the
information
of
the
disc
for
some
reason,
it
actuates
the
EJECTION
operation
steps.
If
the
disc
doesn’t
come
to
the
EJECT
position
within
5
seconds
after
the
solenoid
is
pulled
in
the
EJECTION
operation
step
@,
the
mechanism
takes
it
as
trouble
and
rotates
the
Loading
motor
inversely
and
performs
the
Loading
operation
steps.
If
the
beam
does
not
reach
the
photo
sensor
(C)
within
1.5
seconds
after
starting
ejection,
the
motor
continues
rotating.
If
the
beam
does
not
reach
the
photo
sensor
(C)
within
5
seconds
after
starting
ejection,
the
mechanism
takes
it
as
trouble
and
changes
the
motor
rotating
direction
and
performs
loading
steps.
40