IBM PS/1 User Manual

MAP 0020 (continued)
025 (continued)
ARE THERE ANY MEMORY SIMMS INSTALLED IN YOUR MACHINE?
Note: All 486SX, 486DX, and 486DX2 system boards that have 72-pin
memory SIMMs sockets must have at least one memory SIMM card
installed to operate. There is no memory on the system board alone.
Install a memory SIMM if there is none.
Yes No
026
Replace the system board. After replacing parts, run automatic config-
uration and set the time and date to remove 16X errors.
027
You may have a failing SIMM memory card.
– Power off the system unit.
– Remove one of the SIMM memory cards from the system board.
Note: If you have only one memory SIMM card installed, you must sub-
stitute another SIMM for the system to operate.
– Power on the system unit.
DID THE SYMPTOM REMAIN?
Yes No
028
Replace the failing SIMM memory card.
029
– Power off the system unit.
– Perform the same procedure for any remaining SIMM memory cards.
DID THE SYMPTOM REMAIN?
Yes No
030
(Step 030 continues)
2-26

IBM PS/1 Specifications

General

Processor	Intel 80286 or 80386
Processor Speed	10 MHz (80286)
RAM	1 MB (expandable to 2 MB or more)
Storage	40 MB hard drive
Floppy Drive	3.5" 1.44 MB
Graphics	VGA
Ports	Serial, Parallel, Mouse