| Serial Number | 1512A21374: 1975, 12th week, America |
| Accessories | Pouch |
| Manual: HP-22 Owner's Manual, Sep 1975, bound printout from the MoHPC CD-ROM | |
| Condition | Excellent! |
| Repairs | 15.10.2002 Initially, the
top segment of the 4th display digit from
left was not functioning! I swapped the display module from the HP-21
and
verified that indeed the module rather than a driver on the circuit
board
is broken. With the new display the unit is now fully functional. 26.2.2003 Soldered small wires to the battery contacts to get a more reliable contact when using regular AA cells in a battery pack. |
| Acquired | 2.10.2002 |