IBM 5110 Series Maintenance Analysis Procedures page 102

S T X
223
029
BRING UP MAP
PAGE 4 OF 23
-Switch the DISPLAY REGISTERS switch
to NORMAL.
Go to Page 3, Step 019, Entry Point H.
030
-Remove the G2 (display) card.
- Probe J6- 004.
Is the DOWN light on?
V N
031
Bad G2 (display) card (see MAP 050 for
jumpering).
032
Bad display L32-64-R32 switch.
Check/replace Z3 (display and control panel)
cable (see MAP 0210 and MIM 248,249).
033
- Remove the G2 (display) card.
- Probe H6- E02.
Is the DOWN light on?
V N
034
Bad G2 (display) card (see MAP 050 for
jumpering).
035
- Reinstall the G2 (display) card.
Bad DISPLAY REGISTERS switch (see MIM
249).
Check/ replace Z3 (display and control panel)
cable (see MIM 248,249).
MAP 0400-4
036
Bad RUN switch (see MIM 201,249).
Check/ replace Z3 (display and control panel)
cable (see MAP 0210 and MIM 248,249).
Bad RESTART switch (see MIM 210).
037
- Power down.
- Remove the read / write storage cards from M4,
N2, and N4, if installed.
-Switch the RUN switch under the covers to
RUN.
-Switch the DISPLAY REGISTERS switch to
NORMAL.
- Power up. Wait 25 seconds.
Did either LOADO or CLEAR WS (spelled
correctly) appear only once on one and only
one line of the 5110 display?
V N
038
-Remove the K4 card if installed
- Press RESTART. Wait 25 seconds.
Did either LOADO or CLEAR WS (spelled
correctly) appear only once on one and
only one line of the 5110 display?
V N
039
Was there a card installed in M4?
V N
5
5 5 A
Y Z A
040
Bad M2 (read/write storage) card.
Bad G2 (display) card (see MAP 050 for
jumpering).
Bad J2 (processor) card (see MAP 050
for jumpering).
Bad L2 (exec ROS) card (see MAP 050
for jumpering).
01JAN79
EC 836600 PEC 835541
MAP 0400-4