IBM 5280 Manual page 99

T U
6 6
DATA ENTRY MAP
A-El DISPLAY
PAGE
051
Power off.
Remove
resistor.
the
9 OF 10
terminating
Set the CE meter to the RXl
scale.
Disconnect POl on A-El (MIM
201, 203, 227).
Connect the
the meter to
positive end of
A-E l-P 01-4, '+
Video Drive', and
negative lead to ground
201, 203, 227).
the
(MIM
- The meter should read in the
range of 30 ohms to 150 ohms.
Is the meter reading correct?
Y N
052
053
Use MIM 227 to trace the '+
VideQ Drive' line for opens
or grounds.
- OR -
GO TO THE 5281 OR 5282 DATA
STATION DATA ENTRY MAP
1000, ENTRY POINT A.
Failing Data Station Adapter
Card (A-E1) (MIM 501).
054
Probe A-El-TPIO,
'+ Horizontal
Drive' (MIM 201, 203, 227).
Up light: On
Down light: On
Are the lights correct?
Y N
1
o
A
Z A
A
A
MAP 1011-9
055
Power off.
Connect the terminating
resistor,
PIN
4177566 (5.1K)
(MIM 903), from A-El-TP-IO,
'+
Horizontal Drive', to
A-El-TP-15, ground (MIM 200,
201, 203, 227).
Power on.
- Probe A-EI-TPlO, '+ Horizontal
Dri ve' (MIM 201, 203, 227).
Up light: On
Down light: On
Are the lights correct?
Y N
056
- Power off.
- Remove
resistor.
the terminating
Set the CE meter to the RXl
scale.
- Disconnect POl on A-E1 (MIM
201, 203, 227).
Connect the positive lead of
the meter to A-EI-POl-8,
'+
Horizontal Drive', a'nd
negative lead to ground
201, 203, 227).
the
( MIf>1
The meter should read in the
range of
30
ohms and 150
ohms.
Is the meter reading correct?
Y N
1 1 1
000
A A A
BCD
EC840874 PEC839787
MAP 1011-9