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VDD
To Linear Power Supply
J6
MAIN_OUT
4
3
BATT_CHECK
R119
2
BATT
249K
1
CON_4L_156
I216
I217
R125
C114
100K
0.1U
R107
200K
CR29
3
3
1
1
BAT54
I219
C115
+
Critical at approx 5.68V
1.0U
VDD
35V
R108
6.81K
R128
4.99K
TP47
Low at approx 5.85V
V_REF
8
6
I220
5
4
R122
U37
LT1009S
150K
035262
MAIN_OUT
I215
VDD
R113
R168
R112
CR35
100K
100K
1N914S
20.0K
CR34
R177
I291
10.0M
1
1
3
3
1N914S
TP41
U35
+
I214
LM393S
R116
3
8
+
10.0K
1
R124
2
10.0M
-
4
-
Open Collector Output
Active Low Indicator
U35
TP46
+
LM393S
5
8
+
7
6
-
4
-
R114
3_3V
100K
R123
C153
200K
0.1U
R121
10.0M
VDD
U38
TP42
+
LM393S
3
8
+
1
CRIT_BATT-L
2
-
4
-
Normally HIGH, active LOW
VDD
U38
TP43
+
LM393S
5
8
+
7
LOW_BATT-L
6
-
4
Normally HIGH, active LOW
-
R117
10.0M
TP13
CR17
2
2
1
1
MAIN_DC1
MBRS330T3
VDD
C109
+
1.0U
35V
R115
10.0K
AC_OK-L
Q16
AC_OK
Q16
I222
R126
332K
CR28
2
2
1
1
MBRS330T3
I223
LOW to enable
VDD output
3.3V
3_3V
TP1
CR20
U33
MBRS130
LT1121CZ
3
3
OUT 1
1
2 2
1
1
IN
GND
C108
+
2
2
C111
10U
0.1U
16V
50V
CR21
MBRS130
GNDVIA
GNDVIA
HG1
HG2
CR18
1N914S
3 3
1
1
VDD
TP38
Requires Heatsink NPB #891196
U36
LM2940H
1
1
3
3
IN
OUT
G1
CS
HS
+
C113
C112
C107
CR26
TH
2
2
4
4
5
5
0.1U
0.1U
470U
VC1206
50V
50V
16V
5.6V
TH
R127
100
R120
3
3
40.2K
1
1
Q24
PWR_CTRL
2N3904S
2
2
HIGH to turn ON
I224
R178
20.0K
CORE POWER SUPPLY
RAMPWR
GND
TP39
VDD
Figure 11-14
Core Power Supply Schematic Diagram
11-33
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Troubleshooting
