Read Sharp CD-DP2500 (serv.man12) Service Manual online
CD-DP2500H
– 14 –
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 7 and 11 of the disassembly method to
remove the tape mechanism.
remove the tape mechanism.
How to remove the record/playback and erase
heads (TAPE 2) (See Fig. 14-1)
heads (TAPE 2) (See Fig. 14-1)
1. When you remove the screw (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removesd.
head can be removesd.
How to remove the playback head (TAPE 1)
(See Fig. 14-2)
(See Fig. 14-2)
1. When you remove the screw (B1) x 2 pcs., the playback
head.
How to remove the pinch roller (TAPE 1/2)
(See Fig. 14-3)
(See Fig. 14-3)
1. Carefully push the inside claw to remove it. The pinch roller
pawl in the direction of the arrow <A>, and remove the pinch
roller (C1) x 1 pc., in the direction of the arrow <B>.
roller (C1) x 1 pc., in the direction of the arrow <B>.
Note:
When installing the pinch roller, pay attention to the spring
mounting position.
When installing the pinch roller, pay attention to the spring
mounting position.
How to remove the belt (TAPE 1) (See Fig. 14-4)
1. Remove the main belt (D1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (D2) x 1 pc.
2. Remove the FF/REW belt (D2) x 1 pc.
How to remove the belt (TAPE 2) (See Fig. 14-4)
1. Remove the main belt (E1) x 1 pc., from the motor side.
2. Remove the FF/REW belt (E2) x 1 pc.
2. Remove the FF/REW belt (E2) x 1 pc.
How to remove the motor (See Fig. 14-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Figure 14-1
Figure 14-2
Figure 14-3
Figure 14-4
Figure 14-5
TAPE 2
TAPE1
Main Belt
(D1)x1
Main Belt
(D1)x1
TAPE2
Main Belt
(E1)x1
Main Belt
(E1)x1
TAPE 1
Main Belt
FF/REW
Belt
(E2)x1
Belt
(E2)x1
FF/REW
Belt
(D2)x1
Belt
(D2)x1
Motor
Motor
(A1)x2
Ø2 x 9mm
Ø2 x 9mm
TAPE 2
Record/Playback
Head
Head
Erase Head
(B1)x2
Ø2 x 9mm
Ø2 x 9mm
TAPE 1
Playback
Head
Head
Pinch Roller
(C1)x1
(C1)x1
<A>
Pinch Roller
Pawl
Pawl
<B>
(F1) x2
Ø 2.6 x 5mm
Motor
– 15 –
CD-DP2500H
How to remove the pickup (See Fig. 15-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2).
2. Remove the screws (B3) x 2 pcs., to remove the shaft (B4).
3. Remove the pickup.
3. Remove the pickup.
Figure 15-2
CD MECHANISM SECTION
Perform steps 1, 2, 3, and 13 to 15 of the disassembly method
to remove the CD mechanism.
to remove the CD mechanism.
How to remove the loading motor
(See Fig. 15-1)
(See Fig. 15-1)
1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.
Figure 15-1
Note
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
After removing the connector for the optical pickup from the
connector wrap the conductive aluminium foil around the front
end of connector so as to protect the optical pickup from
electrostatic damage.
(A1)x2
(A1)x1
Loading Motor
CD Base
(A1)x2
(B1) x2
ø2.6 x6mm
ø2.6 x6mm
Shaft
(B2) x1
(B2) x1
Stop Washer
(B3) x1
(B3) x1
Gear
(B4) x1
(B4) x1
CD Mechanism
Pickup
ADJUSTMENT
MECHANISM SECTION
•
Driving Force Check
Torque Meter
Specified Value
Play: TW-2111
Tape 1: Over 80 g
Tape 2: Over 80 g
Tape 2: Over 80 g
•
Torque Check
Torque Meter
Tape 2
Play: TW-2111
30 to 80 g. cm
30 to 80 g.cm
Fast forward: TW-2231
—
70 to 180 g.cm
Rewind: TW-2231
—
70 to 180 g.cm
Specified Value
Tape 1
Specified
Value
Adjusting
Point
Instrument
Connection
Test Tape
Normal
MTT-111
Variable
3,000
±
Speaker
speed
Resistor in
30 Hz
terminal
motor.
(Load
(MM1)
resistance:
6 ohms)
6 ohms)
•
Tape Speed
Figure 15-3
TAPE MECHANISM
Motor
Variable Resistor in motor
Display
