Apple Lisa 2/10

Apple Computer LISA 2/10

Audio Guide

Apple Computer Lisa 2/10

Lisa Macintosh XL is a modified version of the Apple Lisa personal computer made by Apple Computer. In the Macintosh XL configuration, the computer shipped with MacWorks XL, a Lisa program that allowed 64 K Macintosh ROM emulation. An identical machine was previously sold as Lisa 2/10 with the Lisa OS only. Macintosh XL has a 400K 3.5" floppy drive and an internal 10 MB proprietary "Widget" hard drive with provision for an optional 5 or 10 MB external ProFile hard drive with the addition of a parallel interface card. The machine uses a Motorola 68000 CPU, clocked at 5 MHz together with 512 KB RAM. Macintosh XL was discontinued in April 1985.

Wikipedia APPLE Lisa 2/10 

 TroubleShooting

We finally have a nice Apple Lisa too, this is the 2-10 model

The first thing to do is check the power supply, in fact we have replaced all the filter capacitors in both low and high voltage.

after a general check of the capacitors of the various CPU, I/O and RAM cards and that there were no obvious faulty or corroded parts, we began testing all the power supplies available.

 the main problem these machines suffer from is the breakdown of the boot EPROMs found on the CPU, in fact we have replaced them.

a general check was also carried out for the video and CRT part, to make it work we had to close the safety switches located under the front panel and the rear panel.

Let's fix the keyboard

 One problem that plagues this popular computer is the keyboard.

 After more than 40 years the pads that I know are inside each button have lost their conductivity, here you can see what they look like now!

All the pads need to be replaced, for the replacement we contacted TEXELEC.COM for the purchase.

A very important thing when removing the old pads and inserting the new ones is to pay attention when inserting the new pads inside the button. The button has four plastic tabs that lock the pad, make sure you hear the click.

Work finished.

 Let's fix Video Card and CRT

Surely after many years it is necessary to replace some capacitors and clean the trimmers with isopropyl alcohol that regulate the CRT video card.

Since the keyboard has been repaired, we can enter the service menu by pressing the keys (apple + s) at the same time. Press the 5 key to get the reticle.

The trimmers once cleaned with alcohol, must be calibrated, for ease mark the initial position. For this operation you need an alignment grid, apple code 077-8043. 

 ( R5 - contrast ), ( R34 - horizantal phase ), ( R-22 height ), ( R19 - vertical hold ), ( R2 - width ), ( R31- vertical linearity )

Floppy Emulator 

Let's connect a floppy emulator just remove the cable from the original floppy and connect it to the new one, I have to thank Paolo Cognetti for giving me this floppy emulator, I built a small adapter for the flat cable and, let's load MAcWorks 3.0, it will allow us to use the MAC software with the LISA.

We load one of the most played games in the world " Space Invaders ".