•
M
1
BRING UP MAP
PAGE
2
OF
15
011
-Ensure that the
RUN
switch under the covers is
to
RUN.
-Switch the DISPLAY
REGISTERS
switch
to
NORMAL.
-Probe H6-C02 (-run switch
and
not I
PLIo
(refer
to
241
display Z3 socket locations).
(refer
to
the appendix, the general logic probe).
Is
the
UP
light
on?
Y N
012
-Probe H6-E02 (-display reg sw).
Is
the
DOWN
light
on?
Y N
013
-Ensure that the L32-64-R32 switch
is
set
to
64.
-Probe
J6-D04
(-right 32 sw).
Refer.to 241,210).
Is
the
DOWN
light
on?
Y N
014
-Switch the DISPLAY
REGISTERS
switch
to
DISPLAY
REGISTERS.
-Switch the
RUN
switch under the
covers
to
not
run.
Is
ROLO
oo02?
Y N
015
-Switch the DISPLAY
REGISTERS
switch
to
NORMAL.
-Switch the
RUN
switch under the
covers
to
run.
-Probe F2-B03 .(-por).
Is
the
DOWN
light
on?
Y N
3 3 3 3 2 2
S T
2 2
016
(Entry
Point
I)
-Power down.
MAP 0400-2
-Remove the storage cards
L2,
L4,
M2, M4,
N2, and N4.
-Power up.
Wait
30 seconds.
Within 10 seconds after RESTART
is
pressed,
the following events should occur:
1.
ABCDEFGH Appears on the top line
of
the
5 inch display.
2.
ABCDEFGHI Appears on the top line.
3.
The top line is blanked and either LOAD 0
or
CLEAR
WS
appears on the display.
Do
all
three
events
listed
above
occur
in
sequence
after
RESTART is pressed?
Y N
017
Defective
K2
(read/write storage) card.
Defective
K4
(read/write storage) card.
Defective
J2
(display) card.
Defective
F2
(base
I/O)
card.
Defective G2 (controller) card.
Defective H2
(I/O
and diag) card.
018
One
of
the the cards removed
is
defective.
Reinstall them
two
at a time
(L
first, then M,
N)
to
isolate
to
a pair. Then replace
one
of
the
pair
to
find the defective card.
019
-Probe F2-B03.
Remove the following cards
in
order until the
DOWN light goes off. The last card removed
is
defective.
A2,
B2,
E2,
F2.
09DEC75
PN
1608387
EC
829523
PEC
828851
N P Q R S T MAP 0400-2
o
C)
c
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