Sharp CD-DP900 (serv.man27) Service Manual ▷ View online
– 13 –
CD-DP900H/E
(E2)x1
(E2)x2
(E3)x1
(E4)x1
Power
Amp.
PWB
Amp.
PWB
Power PWB
Main
PWB
PWB
Main
PWB
PWB
(D2)x1
(E1)x2
ø3x12mm
ø3x12mm
Front Panel
(F1)x2
ø3x10mm
ø3x10mm
(H1)x3
ø3x10mm
ø3x10mm
(F2)x2
ø3x12mm
ø3x12mm
(F3)x2
(F6)x1
(CD-DP900H only)
(F4)x1
(F5)x5
Push
Power PWB
Headphones
PWB
PWB
Headphones
PWB
PWB
Open
Cassette
Holder
Holder
Display PWB
Tape
Mechanism
Mechanism
(J1)x12
ø3x10mm
ø3x10mm
(K1)x5
ø3x10mm
ø3x10mm
(L1)x1
ø3x10mm
ø3x10mm
(J2)x1
Figure 13-2
Figure 13-1
Figure 13-3
Turntable
CD Player Unit
Slide
Chassis
Chassis
(M1) x2
(M 2) x1
Figure 13-4
CD-DP900H/E
– 14 –
1
Front Panel
1. Front Panel ............ (A1) x1
14-4
2
Woofer
1. Screw ..................... (B1) x4
14-4
3
Tweeter
1. Screw .................... (C1) x2
14-4
STEP
REMOVAL
PROCEDURE
FIGURE
(Q2) x3
Hook
(Q1) x1
(Q1) x1
CD
Mechanism
Mechanism
Loading
Motor
PWB
Motor
PWB
Hook
(Q1) x1
(Q1) x1
Hook
(R1) x5
(R1) x5
Loading
Tray
Tray
(C1)x2
ø3x10mm
ø3x10mm
(B1)x4
ø4x12mm
ø4x12mm
,,
,,,,
,,,,,,
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,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,,,
,,,,,,,,,,,
,,,,,,,,,
,,,,,,,
,,,,,
,,,
Woofer
Front Panel
( A1 ) x1
( A1 ) x1
Screwdriver
Tweeter
Hook
(N2) x3
(N2) x3
Hook
(N1) x1
(N1) x1
Hook
(N1) x1
(N1) x1
Hook
(N2) x3
(N2) x3
Loading
Tray
Tray
Hook
(N1) x1
(N1) x1
Slide
Chassis
Chassis
1
2
(P3) x2
Hook
(P2) x1
(P2) x1
(P3) x2
CD Servo
PWB
PWB
Loading
Tray
Tray
(P1)x2
ø3x10mm
ø3x10mm
Figure 14-1
Figure 14-3
Figure 14-2
Figure 14-4
– 15 –
CD-DP900H/E
REMOVING AND REINSTALLING THE MAIN PARTS
TAPE MECHANISM SECTION
Perform steps 1 to 7 and 9 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. 15-1)
heads (TAPE 2) (See Fig. 15-1)
1. When you remove the screws (A1) x 2 pcs., the recording/
playback head and three-dimensional head of the erasing
head can be removed.
head can be removed.
How to remove the playback head (TAPE 1)
(See Fig. 15-2)
(See Fig. 15-2)
1. When you remove the screws (B1) x 2 pcs., the playback
head can be removed.
How to remove the pinch roller (TAPE 1/2)
(See Fig. 15-3)
(See Fig. 15-3)
1. Carefully bend 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>.
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 2)
(See Fig. 15-4)
(See Fig. 15-4)
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 1)
(See Fig. 15-4)
(See Fig. 15-4)
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. 15-5)
1. Remove the screws (F1) x 2 pcs., to remove the motor.
Figure 15-1
Figure 15-2
Figure 15-3
Figure 15-4
Figure 15-5
(A1)x2
Ø2x9mm
Ø2x9mm
TAPE 2
Record/Playback
Head
Head
Erase Head
Clutch Ass'y
(B1)x2
Ø2x9mm
Ø2x9mm
TAPE 1
Playback
Head
Head
Clutch Ass'y
Pinch Roller
(C1)x1
(C1)x1
<A>
<B>
Pinch
Roller
Pawl
Roller
Pawl
Pull
TAPE 2
TAPE 1
Main Belt
(E1)x1
Main Belt
(E1)x1
TAPE 2
Main Belt
(D1)x1
Main Belt
(D1)x1
TAPE 1
Main Belt
(D1)x1
(D1)x1
Main Belt
(E1)x1
(E1)x1
FF/REW
Belt
(D2)x1
Belt
(D2)x1
FF/REW
Belt
(E2)x1
Belt
(E2)x1
Motor
Motor
(F1)x2
Ø 2.6x5mm
Ø 2.6x5mm
Motor
Clutch Ass'y
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
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