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BCD
111
ANALOG HAP
PAGE
2 OF
5
l o l l
-Switch power OFF
~.
-Remove and reseat the
pow~r
supply
card and then reseat the power
supply cable in the logic board
(A2l.
Is the problem solved?
Y N
005
-Switch power
OFF
~.
-Disconnect the logic gate A2
cablev
-St", tch
pONer
ON
/il.
-M"t"r HI"
l03V
supply
(P3-Sl,
using the potentiometer mounting
plate as ground.
Is the supply betwlE!en
110
Vdc and
140
Vdc?
Y N
006
-Switch power OFF
~.
-Exchange the power supply card.
GO TO MAP DODO. ENTRY POINT BB.
007
-Switch pow"r OFF
~
-Exchange the analog card.
(Other FRU'S or wiring problems
may give similar symptoms.)
GO TO MAP DODO. ENTRY POINT BB.
008
GO TO MAP
0000,
ENTRY POINT BB.
009
-Switch power OFF
~.
-Verify seating of logic gate A2
connector.
-If no problem foundp exchange power
supply card.
GO TO MAP DODD. ENTRY POINT BB.
010
·S~e
Figure 3-1 to check the power
distribution to the analog card.
-Reseat connectors and logic cards or
exchange/repair the failing FRU.
GO TO MAP DODO. ENTRY POINT BB.
11
-Measure the voltages shown in the table
below
using the potentiometer
mounting
plate as
ground.
ANALOG CARD
P4
PINS
14
15
39
40
Is ALL correct?
Y
II
E F
VOLTAGES AND
TOLERANCES
OV
&
I03V
return
+103Vdc
!8.0V
GND
test point
~103Vdc
test point
E F
HAP
O~OO-2
L2
Are the voltages measured an pins
15
and
40
different?
Y II
013
-Measure ID3V dc
at
power supply
connector P3-5.
-See Figure
1-2.
Is the voltage mare than
111 Y
de?
Y N
01'1
Is the voltage less than
95 Y
de?
Y II
015
-Switch power OFF
~.
-Exchange analog card then the
power supply.
GO TO MAP
0000,
ENTRY POINT BB.
016
-Switch power
OFF
~.
-Exchange the power supply then the
anal09 card.
GO TO MAP DODO. ENTRY POINT BB.
017
IS the voltage the same at the analog
card test pOint?
(P4-40)
V N
018
There is a problem in the 103
V
connection from the power supply to
the anal09 card.
'Use Figure 3-1 to isolate
and
repair.
GO TO MAP 0000, ENTRY POINT BB.
019
-Switch power OFF
~.
-Exchange analog card
-If
this corrects the problem
GO TO MAP
0000.
ENTRY POINT BB.
-If
the problem remains,
GO TO PAGE 3, STEP 037.
ENTRY POINT EE.
020
-Switch power
OFF
~.
-Check seating of the analog card in its
edge connector.
There should be
continuity between pins
15
and
40 when
the anal09 card is seated.
-Exchange the analog card
if
no problem
found.
GO TO MAP
0000.
ENTRY POIHT BB.
021
-Wait one minute or until lamp 2 lights.
Is lamp 2 lighted?
Y N
3 3
G H
04FEB81
HAP 0"'00-2
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