Start Map - IBM 5110 Series Maintenance Analysis Procedures

START MAP
PAGE 2 OF 5
001
(Entry Point A)
When the MAP leads to a bad card, measure the
voltages at the card location before replacing the
card (see MIM 274, DC VOLTAGE
DISTRIBUTION). If any voltages are out of
tolerance Go To Map 0700, Entry Point A.
Any reference numbers in the MAPs, such as
(see MIM 241), will be for the 5110 MIM, unless
stated otherwise.
- Record customer supplied information including
error codes, if any.
- Record the status bytes to aid in diagnosing
intermittent I/O problems (see STATUS BYTES
and DISPLAY REGISTERS in the Diagnostic
Aids section of the MIM).
-Switch the L32-64-R32 switch to 64.
-Press the bottom of the REVERSE DISPLAY
switch.
-Switch the DISPLAY REGISTERS switch to
NORMAL.
-Check that the RUN switch (under the covers) is
set to run, if the covers are off (see MIM 201).
Is the PROCESS CHECK light on 1
Y N
002
-Power on the 5110 or press RESTART.
Does the I N PROCESS light stay on?
Y N
003
Is the
5110
display dark for all positions
of the BRIGHTNESS control?
Y N
555
ABC D
o
MAP 0200-2
004
To test the indicator lights:
-Press and hold the RESTART switch.
Are both the PROCESS CHECK light and the
I N PROCESS light on?
V N
005
Bad L2 (exec ROS) card (see MAP 050 for
jumpering).
Bad PROCESS CHECK light.
Bad IN PROCESS light.
Bad RESTART switch.
Check/ replace Z3 (display and control panel)
cable (see MAP 0210 and MIM 248,249).
006
-Release the RESTART switch.
seconds.
Is the PROCESS CHECK light on1
V N
007
Wait 25
-Adjust the BRIGHTNESS control so that if
there are any characters on the display they
are well defined.
The 5110 display is grossly distorted if it has a
black rather than a white background, or is
greatly reduced in size.
Is the
5110
display grossly distorted?
V N
008
Is the
5110
display rolling?
V N
444 3
E F G H
01JAN79
EC 836600 PEC 835541
MAP 0200-2
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