FROM
FIG.
DISCONNECT POWER TO THE ET
RE?iOVE ALL ET
AS FOLLOWS:
DAUGHTER CARDS.
l
DISCONNECT BATTERIES
(WE ARE GOING TO
FIRST.
USE HALF-SPLllTING
l
DISCONNECT AC LAST.
TO FIND THE
TROUBLE)
REAPPLY POWER TO THE ET
AS FOLLOWS:
l
CONNECT AC FIRST.
.
CONNECT
BAITERIES
LAST.
SET YOUR VOM TO THE 12DCV
SCALE AND CONNECT IT BETWEEN
TP3(+)ANDTP6(OV)
ON THE POWER SUPPLY BOARD. (USE
ILLUSTRATION FOR REFERENCE)
LEVEL GREATER
NO
THERE ARE NO
GROUNDED ET MONlTOR
OR CONTROL POINTS
LOWER LEFT-HAND
CORNER OF POWER
SUPPLY BOARD
DISCONNECT POWER ~0 THE ET
AS FOLLOWS:
0 DISCONNECT BATTERIES FIRST.
. DISCONNECT AC LAST.
REINSTALL ALL
DAUGHTER CARDS
REAPPLY POWER
TO THE ET
GROUND FAULT Trouble
FIGURE 5C
26
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