IBM 5110 Series Maintenance Analysis Procedures page 135

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A B B B
B F G H
6 1 1 1
PROCESS CHECK MAP
222
PAGE 13 OF 26
140
Bad J2 (processor) card (see MAP 050
for jumpering).
Bad L2 (exec ROS) card (see MAP 050
for jumpering).
Bad H2 (base I/O) card.
Bad G2 (display) card (see MAP 050 for
jumpering).
141
Bad read/write storage card is now in N2.
142
The trouble probably was a bad card
connection.
143
-Switch the DISPLAY REGISTERS switch to
DISPLAY REGISTERS.
- Record the read / write storage size.
(See DISPLAY REGISTERS in the Diagnostic
Aids section in the MIM).
Does read/write storage size= 3FFF?
Y N
144
Does read/write storage size= 7FFF?
Y N
145
Does read/write storage size: BFFF?
Y N
146
Go to Page 5, Step
051,
Entry Point E.
147
Is there a card in N4?
Y N
B B B B
J K L M
B B B B
J K L M
MAP 0420-13
148
Bad L2 (exec ROS) card (see MAP 050
for jumpering).
Bad G2 (display) card (see MAP 050 for
jumpering).
Bad J2 (processor) card (see MAP 050
for jumpering).
Bad H2 (base I/O) card.
149
Bad N4 (read/write storage) card.
Bad L2 (exec ROS) card (see MAP 050 for
jumpering).
Bad J2 (processor) card (see MAP 050 for
jumpering).
Bad H2 (base I/O) card.
150
Is there a card in N27
Y N
151
Bad L2 (exec ROS) card (see MAP 050 for
jumpering).
Bad G2 (display) card (see MAP 050 for
jumpering).
Bad J2 (processor) card (see MAP 050 for
jumpering).
Bad H2 (base I/O) card.
152
Bad N2 (read/write storage) card.
Bad L2 (exec ROS) card (see MAP 050 for
jumpering).
Bad J2 (processor) card (see MAP 050 for
jumpering).
Bad H2 (base I/O) card.
153
Is there a card in M4?
Y N
1 1
4 4
B B
N P
01JAN79
EC 836600 PEC 835541
MAP 0420-13