Sharp VL-A111UL Service Manual - Page 19
Mechanism Assembling And Parts Replacement, Disassembling And Assembling
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VL-A111U/AH131U VL-AH151U/AH161U 5-5. MECHANISM ASSEMBLING AND PARTS REPLACEMENT (DISASSEMBLING AND ASSEMBLING) Below is given an explanation of assembling of mechanism and its parts replacement. The removal of cabinet and the PWB is explained in the relevant service manual. Notes 1 After removal of cut washers be sure to replace them with new ones. 2 Do not place the mechanism upside down on the table. Otherwise, the mechanism part may be deformed or damaged, resulting in malfunction. 3 When assembling, take care so that screw, washer or other foreign substance do not enter. Otherwise mechanism malfunction may occur. 4 Be sure to use the specified cleaning liquid, oil, grease and screw lock as listed below. Otherwise mechanism malfunction may occur. Oil: Cosmo Oil Co., Ltd. COSMOHYDRO HV100 Grease: Dow Corning MORYCOAT YM-103/X5-6020 Screw lock: THREE BOND 1401B Cleaning liquid: Industrial-use ethyl alcohol 5-5-1. Mechanism modes To actuate the mechanism, apply DC3 to 4V to the L motor. At this time the L motor connector must have been disconnected in advance. Below is given an explanation of the mechanism mode necessary for mechanism check, adjustment and replacement. (1). EJ (Eject) mode (See Figure 1) In this mode, it is mechanically positioned to eject the cassette. It is the position where the EJECT lever is moved the farthest in the direction A in the S/B mode. (In this mode, the cassette compartment assembly can not be locked.) (2). S/B (Standby) mode (See Figure 2) When the cassette is loaded, the mechanism is set to the S/B mode. In this mode the slide chassis is most far from the drum and the Eject lever is in position shown in Figure 2 (in position where the cassette control ass'y can be locked). A A EJECT Lever Slide chassis Slide chassis EJECT Lever EJ mode Figure 1 (3). STOP mode (See Figure 3) In the STOP mode the S and T pole bases are pressed in the STOP position (or Rec Lock position in CAMERA mode), and the S brake is in contact with the S reel disk. S/B mode Figure 2 (4). PB mode (See Figure 4) In this mode, it is positioned for the playback, record and so on. It is the mechanical position where the pinch roller is pressed against the capstan shaft to make the pinchpressing spring the most longest. S pole base T pole base Capstan shaft S reel disk Pinch Spring S brake STOP mode Figure 3 19 PB mode Figure 4 Pinch roller