Mustek PP3000 Especificaciones descargar pdf (Pagina 69)

PST-1000 series Technical Manual 7 - 1

SERVICE AND SPARE PARTS

SERVICE GUIDE

OPENING THE KEYBOARD

Whenever there comes to a need for service or maintenance or upgrading,

there may be the need for opening the PST system and having an access to the interior

of the cabinet. The method to access the interior of a PST system can be divided into

following steps: removing the exterior peripherals, opening the programmable

keyboard, detaching the rear cabinet and dissociating the required parts/module from

the chassis.

The possible exterior peripherals attached to the PST system may include

external KB wedge device, printer, CRT or LCD display, VFD customer display and

some devices connected to the I/O ports of PST system such as cash drawers, laser

scanning devices etc..

Before breaking or making any connection or opening any device or the PST

system, please always make certain that all the power for each and every device

involved are turned off and the power cords are removed.

Should there be any device connected to the area inside the front door such as

a KB wedge device or a PC keyboard, all these devices should be disconnected from

the PST system first. Use the mechanical key to open the front door (see DWG.-1). If

this key is lost somehow, the user should request for replacement of the same

mechanical lock. Unscrew two screws at the bottom side of PST near the front bottom

corners (see DWG.-2) and the user may now lift the programmable keyboard unit by

the front bottom edge of the keyboard unit as shown in the following drawing DWG.-

3 on page 7 - 3.

There are three cables to be disconnected from the keyboard unit before the

unit can be completely taken away from the major part of PST system. The user

should disconnect the cable coming from the external keyboard connector or through

an intermediate cable of the internally connected KB wedge device if assembled in

accordance with the instructions given in the User’s Manual; a four wire cable

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Mustek PP3000 Especificaciones Pagina 69