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Table 6-2
REGULATOR/POWER CONVERSION MODULE
INDICATIOJ:;j
Regulator Trouble-
shooting -
START
pushbutton must
be
pushed
Note:
TB-l Explanation:
TB means terminal '
board;
-1
indicates
the terminal number.
CHECK/ADJUST/REPLACE
WARl'UNG
ELECTRICAL SHOCK CAN CAUSE PERSONAL
INJURY OR LOSS OF LIFE.
WHETHER THE
AC SUPPLY IS GROUNDED OR NOT, HIGH
VOLTAGES TO GROUND WILL BE PRESENT AT
MANY
POINTS THROUGHOUT THE SYSTEM.
1.
Open regulator door and check that all cards
are firmly seated in their sockets.
2.
Pull regulator out from the case and lower
it to the hinge down position.
3.
Check for a +20VDC ±lV with YOM common lead
on regulator TB-l and plus
(+)
lead on TB-4.
4.
Check for a -20VDC ±lV with YOM common lead
on TB-S and plus (+) lead on TB-I.
THE FOLLOWING MEASUREMENTS
RE-
QUIRE THE MODE SWITCH TO BE IN
I)
1--
AND THE MANUAL SPEED FULLY
CW (ON).
5.
Check for approximately -I.SVDC to -2.5 with
YOM common lead on TB-15 and plus lead on
TB-1.
6.
Check for
+6VDC or more with YOM common lead
on TB-1 and plus lead on TB-20. (Replace
Coordination card if no voltage or low vol-
tage is measured.)
7.
Check for a minimum of +6VDC with YOM common
lead on TB-l and plus lead on TB-14. (Replace
Driver Coordination card if less than +6VDC is
measured),
NOTE
THE FOLLOWING MEASUREMENTS
ONLY DETERMINE IF THE OUTPUT
IS MISSING - THESE MEASUREMENTS
WILL NOT VERIFY THE OUTPUT IS
CORRECT; FOR THAT
t
AN OSCIL-
LOSCOPE IS REQUIRED.
8.
Check for a + voltage (approximately +13 to
15VDC) with YOM common lead on regulator TB-1
and + lead on back of socket of Coordination
card on terminal connection 23. (If voltage
is not in this range, replace Coordination
Card.
6-6
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