Removing And Reinstalling The Main Parts; Adjustment - Sharp CD-PC671H Service Manual

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION
Perform steps 1, 2, 3 and 10-14 of the disassembly method to
remove the CD mechanism.
How to remove the loading motor
(See Fig. 11-1)
1. Remove the screws (A1) x 2 pcs., to remove the loading
motor.
How to remove the pickup (See Fig. 11-2)
1. Remove the screws (B1) x 2 pcs., to remove the shaft (B2).
2. Remove the stop washer (B3) x 1 pc., to remove the gear
(B4).
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 to protect the optical pickup from
electrostatic damage.
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2412
• Torque Check
Torque Meter
Play: TW-2111 30 to 60 g. cm
Fast forward: TW-2231 —
Rewind: TW-2231 —

ADJUSTMENT

Specified Value
Tape 1: Over 80 g
Tape 2: Over 80 g
Specified Value
Tape 1
Tape 2
30 to 60 g.cm
60 to 120 g.cm
60 to 120 g.cm
Loading Motor
Motor
PWB
( B1 ) x2
ø2.6 x6mm
Shaft
( B2 ) x1
• Tape Speed
Test Tape
Normal MTT-111
speed
TAPE MECHANISM
Variable Resistor in motor
– 11 –
CD-PC671H/651H
( A1 ) x2
ø2.6 x5mm
Figure 11-1
Stop Washer
( B3 ) x1
Pickup
CD Mechanism
Gear
( B4 ) x1
Figure 11-2
Adjusting Specified
Point Value
3,000 ±
Variable
Resistor in 30 Hz
motor.
(MM1)
MM 1
Motor
Figure 11-3
Instrument
Connection
Speaker
terminal
(Load
resistance:
8 ohms)