HP-150 Touchscreen

It will hopefully turn up as I sort things out for the impending house move... Both my HP150s ahve internal printers, but I am pretty sure I have at least one spre unit. I think that's all you need to add the printer. It jsut slots in to the top case and you plug the ribbon cable in. It prints on thermal fax paper (can you still get that?) . [Touchscreen fault] What a freidn of mine calls 'A can of pneumatic fluid' :-) Yes. As you doubtless know, the touchscreen works by sending IR light beams across the front of the CR, and detecting if any of those beams are broken by a finger touching the screen. A valid touch is one or 2 adjacent X-beams broken AND 1 or 2 adjacent Y beams broken. At pwoer on, it checks that all beams are gettign there. So a bit of dirt down one of the holes will cause an error. There was an HP kit of IR-trnasparent plastic shields to fit into the bezel, by all accounts it didn't help much. On one of my units, there wa a fialed IR device (I forget if it was an LED or phototranssitor. Replacing it was not ahrd... The main problem with these Sony drives is that the grease that lubricates the eject linkages goes hard, and the leankages stick. This means the disk holder doesn't latch properly when you eject a disk. On a dobble-head drive, this is a big broblem becuase the upper head will catch in the diusk shutter and get damaged. Single head drives don't have an upper head, and dmaage to the pressure pad is a lot easier to put right (if ti occurs). Baically, you have to remove the drives from the 1921 chassis (I think it's 3 screws each, and a couple of cables), then take off the drive logic board (3 scres and lots of connectors), the front panel (2 screws), the eject damper (1 screw), the head load solenoid bracket (2 more screws) and finally the disk holder (4 screws. You can then at lease separate the holder intothe 3 main aprts (holder, and the 2 side panels) buyt rmeovign a screw and some E-circlps. I have found 2 designs. the older one will comea apert almost completely, the levers are held on by circlips. The later one has thigns riveted in place. With the fomer, take it apart and clean all the bits with propan-2-ol. With the later, unhook the springs, saak the parts (particularly the right hand side plate) in propan-2-ol, work the levers back and forth and wipe off the grease as it emerges. I find theres;' no real need to put any grease back on these parts. With the amount of use they are likely to get, they are not gonin to wear out. There are few pictures in my Flickr account (tony_duell) of taking apart a double-head drive. THe single-head one is very similar. -tony