Advance Printing
363-205-401
Power Up: DLP-523
Issue 7, March 1997
Page 5 of 6
13. Coat each battery connection with NO-OXid grease.
14. Condition DMM to measure DC volts. Measure battery string voltage at the
connector (marked STR "+" and "
−
") at the end of the battery string cable.
Make sure measured polarity corresponds with polarity indicated on connec-
tor.
15. Does meter indicate battery string voltage
−
50.4 V DC or higher?
If YES, then proceed to Step 16.
If NO, then continue with Step 15.
16. Make sure that there are twelve batteries in the string. Recheck battery con-
nections and correct if necessary. If connections are correct, check individual
battery voltage. Any battery that indicates less than 4.20 V DC should be
replaced.
17. Connect the battery string cable STR connector to the connector designated
STR( ) (1 or 2) on the end of the battery cable located in the battery compart-
ment. Verify battery cable J140 is plugged in P140 on the side of the power
shelf.
18. Dress cables in the battery compartment.
19.
NOTE:
To measure the battery string voltage accurately, disconnect any battery
strings other than battery string being measured. [To disconnect other
battery strings, unplug the battery string cable connector marked STR
from the battery cable connector marked STR( ).]
On power shelf connect DMM to (1A/mV) - and V (bottom 2 jacks).
Turn AC circuit breaker off.
20. Does meter indicate battery string voltage of 50.4 V DC or higher?
If YES, then proceed to Step 21.
If NO, then continue with Step 20.
21. Check the four 30 Amp fuses on the AUG4 BIU. Visually inspect cable assem-
bly between power shelf and battery string. Replace cable assembly fuse
and/or cable assembly and AUG4 BIU until meter indicates correct voltage.
22. Is this the last battery string to be installed?
If YES, then proceed to Step 22.
If NO, then repeat from Step 1 for next battery string to be installed.
