HP ThinkJet 2225P

Unfortuantely my official Thinkjet service manual only covers the -A, -B, -C and -D versions. But I did figure out the pinout of the -P and made a cable to link it to a PC parallel port. I'll stick details of that cable at the end of this message. Incidentally, the battery pack can be rebuilt. You can unclip the top of the hosuing (the cells are stuck to both parts of the case with double-sided foam tape, so it's a bit of work to get it to separate without damage -- removeing the latck helps). Inside is a little charger PCB and 6 sub-C NiCds. There's a fuse between 2 of the rows of cells that you should desolder from the old sells and solder in the same place on the new ones. Apart from that there's no difficulty. -tony ------------------- PC printer port -> HP portable thinkjet cable PC TJ 1 ---- Stb-----> 1 2 -----D0------> 2 3 -----D1------> 3 4 -----D2------> 4 5 -----D3------> 5 6 -----D4------> 6 7 -----D5------> 7 8 -----D6------> 8 9 -----D7------> 9 10 <---Ack------ 10 11 <---Busy----- 11 12 <--PE--+ 24 -------+ 13 <---Sel------ 12 15 <---Err------ 13 16 ----Init----> 14 19 ----Gnd ----- 15 Pins 12 and 13 may be swapped - I can't get either of them to change state to check.