Procedure 7.27 - Replacing The Prom - Precor EFX5.31 Instruction Manual

Procedure 7.27 - Replacing the PROM

1. The PROM and the associated printed circuit assembly (PCA) are static sensitive. Anti-
static devices must be used and all anti-static precautions must be followed during this
procedure.
2. Remove the printed circuit assembly per its associated procedure.
3. The prom is a forty-four pin square package (PLCC44). This prom should be removed with a
proper IC removal tool (see the illustration below)
4. The IC's may inserted into their socket by hand by carefully aligning the notch on the IC with
the notch on the IC socket and carefully pressing the IC into its socket. See the illustrations
below for the alignment notches. Care must be taken that the IC legs on a DIP28 are all
aligned in the socket to prevent the legs from bending when inserted. The PLCC44 IC must
be carefully aligned squarely in its socket or it will not insert. Do not force the IC into its,
socket. If it does not insert easily, remove the it and re-align it in its socket.
Notch
Notch
PLCC44 removal tool
PLCC44