IBM 5100 Maintenance Analysis Procedures page 94
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- Maintenance information manual (389 pages) ,
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-.
A B
1 1
DISPLAY MAP
PAGE
2 OF
10
004
-Probe J2-M03 (-reverse dispIIlY).
Is the DOWN light on?
Y N
005
Defective J2 (display) card.
Defective REVERSE DISPLAY swit<;h.
Check / replace display and contrql panel
cable (refer to 210, 241).
006
-Remove the J2 (display)
~card.
-Probe J2-M03 (-reverse display).
Is the DOWN light on?
Y N
007
Defective J2 (display) card.
008
-Reinstall the J2 (display) card.
Defective REVERSE DISPLAY switch.
Check/replace display and contrQI panel <;:able
(refer to 210, 241).
009
-Press the top of the REVERSE DISPLAY :;iwitch.
-Probe J2-M03 (-reverse display).
Is the DOWN light on?
Y N
2
C
010
Defective REVERSE DISPLAY switch.
Check/replace display ano control panel cable
(refer to 210, 241).
C
2
MAP 0500-2
011
-Press the bottom of the REVERSE DISPLAY
switch.
-Adjust the BRIGHTNESS control to the center of
its range.
Is the 5 inch display completely dark?
Y N
012
-Attach a jumper from J2-P02 (- I/O display
off) to D08 (gnd).
Is there video (any black image) within tJ'lfil
raster area of the 5 inch display?
Y N
013
(refer to 240, display raster).
Is the raster a stable white background
of the correct size and st"lape?
Y N
014
-Remove the jumper from J2-P02.
-Calibrate the CE meter (refer to 270).
-Measure +12 vdc from J6-ED4 (+1
Z
vdc) to J6-C02 (gnd),
(refer
to
241
display
Z3
socke~
locations).
Is the voltage in tolerance (+11.0 vdc
to +13.2 vdc)?
Y N
015
Go to MAP 0700, Entry Point A.
016
-Probe J2-J02 (-external vertical sync).
Are both lights on?
V N
28SEP76
PN 16083S9
88333
o
E F G H
EC 829670
PEC 828851
MAP 0500-2
o
o
c
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