Fujitsu M10-4 Service Manual page 198

Figure 9-1 Location of CPU memory unit
Location number
1
2
There are two types of CPU memory units: FRAME-A and FRAME-B. The type of a
CPU memory unit can be determined from the indication on the label (A in the
figure). If a CPU memory unit does not have the "FRAME-B" indication, it is a
FRAME-A unit.
Note - FRAME-A and FRAME-B cannot be installed if they are mixed because they are not
compatible with each other. Especially when you perform replacement work, be careful not
to mix the top cover or left- and right-side guides of the replacement CMU memory unit with
those of the CMU unit to be replaced.
Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ November 2014
184
(1)
Component
CPU memory unit upper (CMUU)
CPU memory unit lower (CMUL)
(2)