Sharp VL-MC500U Service Manual download pdf (Page 17)

VL-MC500U/K

9. MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT

(DISASSEMBLY AND REASSEMBLY)

Mechanical section disassembly and reassembly are explained in this section.

For removal of the cabinet, etc., refer to 4. DISASSEMBLY OF THE SET.

1. Always replace cut washers that have been removed, for example in parts replacement, with new ones.

When reassembling, be careful not to allow screws, washers or foreign matter to enter. They can cause mechanical misoperation.

3. Use the cleaning liquid, oil, grease and screw lock that are specified below. Use of any other kind can cause mechanical

misoperation.

Oil: Cosmo Petroleum : Cosmo Hydro HV22 Screw lock: Three Bond :1401B

Grease: Dow Corning : Moly Coat YM-103 Cleaning liquid: Industrial-use ethyl alcohol

9-1. On the mechanical modes

When operating the mechanism separately, apply DC3~4V to the loading motor.

(When the mechanism is connected to the main PWB, do not apply external voltage to the loading motor. It may cause operational problems.)

(1) EJECT mode

The mechanism position to take out the cassette where the

EJECT lever is extremely shifted in the A direction. (It is

impossible to lock the cassette controller assembly in this

mode.)

(2) STANDBY mode

The mechanism position to set the cassette where the slide

chassis is at the farthest position from the drum and the

EJECT lever is in counterclockwise rotated position (position

where the cassette controller assembly can be locked).

LOADING START mode diagram

REWINDING (VSR) mode diagram

EJECT lever

Rotation

(3) LOADING START mode

This is the mode where the tape is wound around the winding

reel when a cassette with visible wind start leader tape is

loaded. (The brake shifter moves to the left, the S main brake

is separated from the S reel base and the Tu main brake is

separated from the Tu reel base.)

(4) REWINDING (VSR) mode

The mechanism position to rewind the tape (fast rewinding

playback). The S and T pole base is pressed, the pinch roller

is pressed to the capstan shaft, the brake shifter VSR brake

section engages with the Tu reel base gear.

EJECT mode diagram

STANDBY mode diagram

S reel base

S main brake

Brake shifter

Tu main brake

Tu reel base

VSR brake section

Tu reel base

Capstan shaft

Pinch roller

T pole base

S pole base

Slide chassis

It is hardly seen since

it is concealed with

slide chassis.

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Sharp VL-MC500U Service Manual Page 17

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