IBM System/370 145 Reference Summary page 33

'"' ....
' " ""
is
S.l.T.tesh only 32k Comrol
---....L.--~
Storage. If
mo<e
thon 32k
Comrol Storoge S.
I.
T. must
be used ot coum
fl
ond all
failing cords at BSM A2. and
'----~-----'
A4 must
be
replaced.
Replace
Suspected
SOR Cards
SDBOCheck
should
MW
be
fixed
Open Areas:
Read Generator
No
Display LS 12
·Determine
failing bit.
Swap affected
SOR Cord
loop S.l.T.
-20min.
a
Han:! Stop"
Mode
( ean he swapped
with
write Generator )
Untermiftl:lted Lines
Shorts on Boards
Bad contact
of
Card or Trilead
Ripple on Power Lines
MEMORY TROUBLESHOOTING PROCEDURE
Error nMt be:
Board Wirirg,
Tri leads or
Termination
Open-
Shorts
an
Boards
-1naledU""'
lad
contacts
ri oords
or
trlleads
!tipple an Powe< lines
2.7
Perform
ucheek Routine
for intermittent
memory errors•
and return
Double Bit
Failures
should
now
be solved
•