HP150

Specification

• Hewlett-Packard 45611A (HP-150) Serial no. 2348F02441
• HP 9121D dual 3,5" disc drive Serial no. 2229A20029

Origin

• Kindly donated by a friend who's (parents) used it to do the accounting for their business.

Condition

• boots PAM and DOS 2.11 from original floppy (HP 150 SYS MASTER A.01.04) using the 9121 dual floppy unit.
• touchscreen doesn't work.
• the first drive of the 9121 unit is broken.

Done

• tried to fix the touchscreen as described in the Service Manual: removed bezel and cleaned dust from the LEDs.
• because the 150 boots from unit 0, I set the working drive to 0 and the other to 1 using the dip switches on the drives inside the unit. Not ideal because drive 1 is marked 0 and vice versa, it would be better to swap the drive slots too.

To Do

• try cleaning the touchscreen LEDs more thoroughly or find possible other cause of failure.
• transfer software found on hpmuseum.net (see ImageDisk)
• swap the drives of the 9121.
• try to fix the broken drive.
• use the 9133 from the HP250, the 250 has less need for it because it can use emulated drives.