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ANALOG HAP 0400
PAGE
1 OF
5
ENTRY POINTS
FROM
ENTER THIS MAP
MAP
ENTRY
PAGE
STEP
NUMBER
POINT
NUMBER
NUrlBER
0100
A
1
001
0100
CC
5
056
0100
DO
5
068
001
(ENTRY POINT Al
DANGER
When the power ON/OFF switch ;s ON
m.
the
following are connected directly to the
mainline power:-
-The front panel fuse
&
switch.
-The degauss coil,
-Parts of the power supply card and
-The twisted-pair connection from Pl
pins 8 and 9 (on the power- supply card)
to the analog card (P7).
-Be careful when measuring voltages in
these areas.
-Switch power OFF
~
and remove the power
cord from the mainline power socket
before such actions as:-
-disassembling,
-inspecting for failures,
-making resistance measurements, etc.
-Release Intensity Override.
(If
cmgaged. )
-Switch power OFF
~.
-Reseat the A2. A3
&
A5 logic gate
connectors.
-See Figure 6-5.
Check the continuity of
frame ground (potentiometer mounting
plate on bezel) to P3-4 and P4 pins 14,
24 and 30.
-Repair
if
neCQssary.
-Switch power ON
~.
-Measure the voltages shown in the table
opposite using the brightness
potentiometer plate as ground.
Was All correct?
Y N
002
-Switch power OFF
~.
-Check continuity of A2D08 to the frame
ground.
-Repair if necessary.
See Figure
6-r
and Figure 3-1.
-Switch power ON
~.
-Measure the voltages shown in the table
opposite using the brightness
potentiometer plate as ground.
was All correct?
Y N
003
W<lS any voltage less than 1.0V dc?
Y N
2 2 2 2
ABC 0
Copyright IBM Corp 1981
HAP 0400-1
EXIT POINTS
EXIT THIS MAP
TO
PAGE
STEP
MAP
ENTRY
NUMBER
NUrlBER
NurmER
POINT
4
053
0200
CC
4
055
0300
A
5
065
0500
B8
ANALOG CARD
VOLT AGES AND
P4
TEST
TOLERANCES
POINTS
37
+5.0 Vdc
to.8 V
36
+8.5 Vdc
t1.0 V
5
-5.0 Vdc
to.8
y
LOGIC
VOLT AGES
GATE
AND
PINS
TOLERANCES
82003
+5.0 Vdc
to.8
y
82811
+8.5 Vdc
±1. 0 V
B2806
-5.0 Vdc
±0.8 V
04FE881
HAP 0400-1
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