Read Sharp CD-DP900 (serv.man15) Service Manual online
CD-DP900H/E
– 16 –
How to remove the pickup (See Fig. 16-2)
1. Remove the stop washer (B1) x 1 pc., to remove the gear
(B2) x 1 pc.
2. Remove the screws (B3) x 2 pcs., to remove the shaft
(B4) x 1 pc.
3. Remove the pickup.
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.
Figure 16-2
CD MECHANISM SECTION
Perform steps 1, 2, 3, 11, 12,13 and 14 of the disassembly
method to remove the CD mechanism.
method to remove the CD mechanism.
How to remove the loading motor
(See Fig. 16-1)
(See Fig. 16-1)
1. Bend the hooks (A1) x 5 pcs., to remove the loading motor.
Figure 16-1
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
±
30 Hz
Speaker
speed
Resistor in
Terminal
motor.
(Load
resistance:
6 ohms)
resistance:
6 ohms)
•••••
Tape Speed
Figure 16-3
(B3)x2
ø2.6x6mm
ø2.6x6mm
Shaft
(B4)x1
(B4)x1
Stop Washer
(B1)x1
(B1)x1
Gear
(B2)x1
(B2)x1
CD Mechanism
Pickup
TAPE MECHANISM
Tape
Motor
Motor
Variable Resistor in motor
(A1)x5
Loading
Motor PWB
Motor PWB
Loading
Motor
Motor
Loading
Tray
Tray
