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MDS 05-2818A01, Rev. C
MDS P-60/P-60 HL Reference Manual
41
Invisible place holder
Figure 21. Low Voltage Disconnect Assembly, P/N 03-3077A01
Schematic Diagram
Use of the Battery Reset Switch (SW1)
Normally, the operation of the Low Voltage Disconnect Assembly is fully
automatic. The only exception is when replacing a discharged battery with a
charged unit
before AC power has returned
. In this case, it is necessary to press
the
BAT. RESET
switch on the assembly after installing the new battery. (See
Figure 22
.) Use a pen or other pointed object to press the switch. This allows
the replacement battery to immediately supply power to the transceiver.
Invisible place holder
Figure 22. Low Voltage Disconnect Assembly
NOTE:
For proper opera tion of the Low V oltage Disconnect assembly,
14.10 Vdc (±0.1 V) must be present at the battery connector on the
Interface/Utility Board (with the battery disconnected). This is the
standard factory setting.
U
MC33172
-
3
1
2
U
MC33172
-
6
7
5
U
MC33172
+
-
4
8
K1
+
-
3
6
4
1
J1
1
2
3
E1+
E2
E1
GN
SW
0.1UF
C
10UF
C
1
121K
R
1
110K
R
10K
R
10K
R
100
R
1ME
R
MM BT3904L
T1
Q
2
3
1
1N5231
CR
1
3
2
CR
1
3
2
CR
1
3
2
RESE
BA TTER
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