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D
1
POWER MAP
PAGE
2 OF
10 ..
-Remove the power cord from the mainline
power socket.
-Remove the bezel.
-With the power switch in the ON
m
position, measure the continuity from the
power supply edge connector (P3) to the
power cord.
Pins 11 and 14 (test points) of P3 should
be connected one to each power cord pin.
See Figure 1-2 and Figure 6-15.
Are both connections good?
Y N
E
005
-Switch power OFF
~.
-Check the main fuse (FI).
Has the fuse failed?
Y N
006
-See Figure 6-15 to check the
continuity of the OH/OFF switch, fuse
and fuseholder and the connecting
cables.
-Exchange the failing FRU.
GO TO MAP 0000, ENTRY POINT BB.
007
-Exchange the fuse and test operation.
-Switch OFF and wait 1 minute.
-Switch ON and wait 10 minutes.
Did the fuse fail again?
I
;g8
TO MAP 0000, ENTRY POINT BB.
009
-Switch power OFF
~
and remove the power
cord from the mainline power socket.
-Remove power supply card.
-Exchange the main fuse (FI) again.
-Switch power
ON
~
WITHOUT
reinstalling
the power supply card.
Did the fuse fail?
Y N
010
-Switch power OFF. and remove the
power cord from the mainline power
socket.
-Exchange the power supply card.
GO TO MAP 0000, ENTRY POINT BB.
011
-Remove the power cord from the mainline
power socket.
-See Figure 6-15 to verify the
insulation of the input power wiring.
GO
TO MAP 0000, ENTRY POINT BB.
C E
1
HAP 0200-2
L
-Switch power OFF
~
and remove the power
cord from the mainline power socket.
-Remove the power supply card.
-Check the fuse (F2) on the power supply
card.
NOTE: If necessary, remove the plastic
cover to inspect the fuse.
Replace the
cover.
Is the fuse good?
Y N
013
-Do NOT repair or exchange the fuse.
-Exchange the power ,upply card.
GO TO MAP 0000, ENTRY POINT BB.
014
-leave the power supply card out.
-See Figure 1-2 and Figure 3-1.
Check
the continuity of the lOPT sense
winding to the anal09 card as follows:
-Measure resistance between locations 8
and 9 on the power supply card edge
connector SOCKET (PO).
Is the resistance 0 ohms?
Y N
015
-See Figure 4-7.
Check that P7 (lOPT
sense) is plugged-in.
-If the resistance is still not 0,
verify the continuity of the cable
from
P3
to
P7
and repair.
-If no problem is found, exchange the
analog card.
GO TO MAP 0000, ENTRY POINT BB.
016
-Verify the seating of the power supply
card in the card edge connector.
.If no problem found, exchange the power
supply card.
-Ensure that it matches the machine
voltage label and the mainline ac
voltage.
GO TO MAP 0000, ENTRY POINT BB.
017
-Connect the meter to +5 V on the logic
board.
(0 V
=
B2D08, +5 V
=
B2D03).
Does the meter indicate
+~.5
to +5.5
Volts?
Y N
018
-Switch power OFF
~.
.Disconnect the logic gate A3 cable.
-Switch power ON
m.
Does the meter now indicate +4.5 to +5.5
volts?
Y N
3 3
F G
019
-Switch power OFF
~
and remove the
power cord from the mainline power
socket.
-Exchange the power supply card.
GO TO MAP 0000, ENTRY POINT BB.
04FEB81
HAP 0200-2
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