IBM System/360 2050 Maintenance Manual page 66

Processing unit
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!nr!iotly, 1el the following:
Di1oble interval tifl!er
FU' mode to LOAD
Check control to DISABLE
FU cor•trol to Pt:OCESS
lood swih..het. lo de1ired
unit
Di~oble
ROS etr,
(jumper OIC-EJC4011 lo D08j
P,
.:>\~ ~
r
All:T to , "'
pnJ
iope
•Pcood. If
"''ul'lt"
P•'""'I,
•Ppoi, FLT
lo:J'd,
"(Ud\.
<.01e
FfMM
Anolyie
u;"''.:l
~LT1
<.>•
CPU dio9no1tk1
Sto1e
0?00
SSSR
in
1to1a9e loc '.>Olf'i
Syitem
resel
ond load
Store 0600 SSSR
in
1to109e loc 5010
s~s
St!lif'I
11uml•e1
R
R11utint:
number
TT
re11
r•uml1e1
Not-:-
'i :op on t!!1t
101
te1
foi I
~gr
'>fl
fo,I·
d•·pres~ion
of ST.ART,.,, II di1play 1hP ne•t
(oywo«:l in
1he
L-•eg toltpr k)!JW01d
7
ii retu"'\
ro logwo1d 11.
Th01 pon fo, I t1 igge•
indicote~
,1otu1 of wo•d
di1ployeC. The sequence tounl•• inditote1
.... hich wOJd i1 di1played. An) bit on in the
L-reg indic;ote1 o failure. Yhe R-,pg
indic.ole1 P•pected
1tnponu•
I
Tuu ran er.or free;
noofllal
IPL
will
1ewind lnpe
[
_____
..
___ _
FIGURE 42.
MULTIPLEXOR CHANNEL PftOGRESSIVE SCAN RUN ANO REPAIR Pl:OCEDURf
1
Mocliine "ops
with
L-•eg displaying
Byte 0 :. Not uied
Bytes
1
and
2
=Series
ond +outine no.
Byte 3
lesl
no.
Copy conteflll of
L-reg
Pren
START
to
di\ploy logwo1d1
No
(see Note)
PrenPSW
RESTART
Match bih(s) in
L-•eg with log-word
R!op on
MC003
lo
determine foiling
triggeo, R-reg
indic11tes upe<:ted
rHponie
SDR B-31 contains
the
addren of diognose
inu1, Ploce oddreu in
IAR keys; IAR repeat
switch down; iystefl!
Rt"fe, to MCXXX for
fail i
nq
series.
I. Df'tprmine
obwcii·•e of tesr
I.
Note te11
p1oceclurl!'
Ponible hardcore or
cOfllfl!On chonne
I
failure. Troubleshoot
f10R1 foiling tgr
Using FC5 as sync,
houble1hoot using
MCXXX
for
procedure ol'\d
operation
To leave
ditf)loy loop,
roise IAR
1epeol
insn,
tel FLT mode 10
FR
PASS,
prm START,
return FLT mode to
LOAD. PSS
tgr
ikould be on
To
check length of test ond
condition of triggers at logout
time, "ope
01ACJC5006.
Negolive
shift
is end of IHI
Malnlenonco l'ealuroo
(3/71)
II

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