Sharp CD-BA1700H Service Manual download pdf (Page 12)

CD-BP160W/180W/1500W/1700W

– 12 –

How to remove the pickup (See Fig. 12-2)

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.

Figure 12-2

CD MECHANISM SECTION

Perform steps 1, 2, 3, 11, 12, 13 and 14 of the disassembly

method to remove the CD mechanism.

How to remove the T/T Up/Down motor

(See Fig. 12-1)

1. Bend the hooks (A1) x 5 pcs., to remove the T/T Up/Down

motor.

2. Remove the drive belt (A2) x 1 pc.

Figure 12-1

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.

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

Specified Value

Play: TW-2111 Tape 1: 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

resistance:

6 ohms)

• Tape Speed

Figure 12-3

TAPE MECHANISM

Motor

Variable Resistor in motor

(B1) x2

ø2.6 x6mm

Shaft

(B2) x1

Stop Washer

(B3) x1

Gear

(B4) x1

CD Mechanism

Pickup

(A1)x3

T/T Up/Down Motor

Disc Tray

(A1)x2

Pulley

Drive Belt

(A2) x1

Motor

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 59 60

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Sharp CD-BA1700H Service Manual Page 12

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