Adjustment - Sharp CD-BA3100H Service Manual

CD MECHANISM SECTION
Perform steps 1 to 6 of the disassembly method to remove the
CD mechanism. (See page 12.)
How to Remove the pickup (See Fig. 15-1)
1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1
pc.
2. Remove stop washer (A3)x 1 pc., to remove gear (A4)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 remove to protect the optical pickup
from electrostatic damage.
CD CHANGER MECHANISM SECTION
Perform steps 1 to 4 of the disassembly method to remove the
CD changer mechanism. (See page 11.)
How to Remove the tray motor/main cam motor
(See Fig. 15-2)
1. Remove the screws (B1)x 4 pcs., to remove the CD Servo
PWB.
2. Remove the (1) front top plate, (2) changer box, left/right
and (3) disc trays 1~6. After that, disassemble as shown in
the figure.
3. Remove the screws (B2)x 4 pcs.
4. Remove the tray motor and main cam motor.
Note:
The parts of (1), (2) and (3) correspond to the drawing Nos.
117, 102, 103 and 108 to 113 of the CD change mechanism
disassembly drawing.
Remove the screws of 117, 102 and 103, and the parts of (1),
(2) and (3) will be ready for removal and the screws of the tray
motor and main cam motor will be visible.
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2111
• Torque Check
Torque Meter
Play: TW-2111 30 to 80 g.cm
Fast forward: TW-2231 —
Rewind: TW-2231 —
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ADJUSTMENT

Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1 Tape 2
30 to 80 g.cm
70 to 180 g.cm
70 to 180 g.cm
(A1)x1
ø2.6x6mm
Pickup
CD
Mechanism
CD Changer Mechanism
(2)Changer Box,
Right
(1)Front Top Plate
(2)Changer Box,
Left
(3)Disc Tray,1~6
(B2)x4
ø2.6x4mm
Tray Motor
• Tape Speed
Adjusting
Test Tape
Normal MTT-111 Variable
speed Resistor in
motor.
TAPE MECHANISM
Variable Resistor in motor
– 15 –
CD-BA3100H
Stop Washer
(A3)x1
(A1)x1
ø2.6x6mm
Shaft
(A2)x1
Gear
(A4)x1
Figure 15-1
CD Servo
PWB
(B1)x4
ø3x10mm
Main Cam Motor
Figure 15-2
Specified Instrument
Point Value Connection
3,000 ± 30 Hz
Speaker
Terminal
(Load
resistance:
6 ohms)
Tape
Motor
Figure 15-3