Memory Checkout
Depending on the model, the memory size that is
available for customer use appears differently.
This is not a hardware problem.
See the following tables for the available memory
size of each card.
NOTE:
For Models 370C, 755C and 755Cs, one
of two types of memory cards
can be used, IC DRAM card or DIMM card.
If DIMM cards are installed, replace IC DRAM with DIMM
in the following.
Please see the LEGAL - Trademark notice.
IC DRAM
750, 750C, 750Cs, 750P
355x, 360x, 370C, 750Ce, 755C, 755Cs
0 MB
3904 KB
3712 KB
2 MB
5952 KB
5760 KB
4 MB
8000 KB
7808 KB
8 MB
12096 KB
11904 KB
16 MB
20288 KB
20096 KB
DIMM
370C, 755C, 755Cs
0 MB
3712 KB
4 MB
7808 KB
8 MB
11904 KB
12 MB
16000 KB
24 MB
28288 KB
16 MB
20096 KB
20 MB
24192 KB
32 MB
36480 KB
Memory errors might stop system operations, show error messages on
the screen, or hang the system. The computer detects memory parity errors but
does not correct them.
Use the following procedure to isolate memory problems.
Notes on Memory Errors
If memory problems occur intermittently,
use the loop option to repeat the test.
When the test detects an error,
an error log is printed on the
printer connected to the parallel port.
See 'Error Log' information.
If a parity error is logged in CMOS, POST error code 118
appears when the power is turned on. To clear the log and
to test the memory, run the
memory diagnostic.
If no error is detected by
the test, the log is cleared, and error code 118
will not appear the next time the POST is run.
If the 118 error code occurs repeatedly,
determine and replace the failing memory FRU.
FRUs should not be replaced because of a single, un-reproducible
failure. Single failures can occur from a variety of reasons
that have nothing to do with a hardware defect such as:
cosmic radiation, electrostatic discharge, or software errors.
FRUs replacement should only be considered when
a recurring problems exits.
If this is suspected, clear the error log and run the test again.
Do not replace any FRUs if log errors do not reappear.
System Programs in Flash Memory
System setup programs and diagnostic tests are stored in Flash
memory.
Flash Memory Update
A flash memory update is required for the following conditions:
When Updating Flash Memory
Do not power-off the computer, disconnect the Vac power,
or remove the battery during the Flash update.
On certain systems, updating Flash memory can reset all customers
configuration settings to the default values.
To update the Flash memory, perform the following steps:
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