IBM 5280 Manual page 62

B
2
BASE MAP
INTERMITTENT ERROR
PAGE 4 OF
5
MAP 0800-4
004
DISPLAY I KEYBOARD I ETC / MSR
OPERATIONAL SYMPTOMS
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REPAIR SEQUENCE
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02
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03
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04
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1. Si ngle screen dark
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09
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OS
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2. All screens dark
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3. Characters missing in the corners
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09
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4. Display out of focus
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5. Only one vertical line displayed
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6. Only one horizontal line displayed
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7. No contrast control
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10
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8. Hori zontal centeri ng problem
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29
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09
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9. Vertical centering problem
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10. No bri ghtness control
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1 1. Vi de
0
pro b 1 em s
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30
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09
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12. Vertical size, hold, or linearity problems
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20
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09
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13. Single key failure
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12
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19
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14. Multiple key failure
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15. Key boa r d
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pea
k
e r f ail u r e i 11 lOS
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1 9
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16. No keyboard response
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19
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OS
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17. Elapsed time counter failure
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17
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18. Magnetic stripe reader failure
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17
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IS
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19. No valid sign-on or data (display is stable>1 27
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20. Full screen reverse image
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14
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16
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ECS40S74 PECS397S7
,..lAP
0800-4