2-17
Pin No. Signal name Description
10)
NTC1 Lithium battery 1, connecting to thermistor signal inside
11)
GND ground
12)
P15V
Heating wire drive voltage output (Range:12.42V to
15.18V)
13)
HRT22 Pin 1 of heating wire thermistor
14)
HRT21 Pin 2 of heating wire thermistor
15)
GND ground
16)
3.3V 3.3V supply valtage output (Range: 3.135V to 3.465V)
17)
GND ground
18)
GND ground
19)
GND ground
20)
12V2 Second 12V supply valtage output (Range: 0V to 0.4V)
21)
GND ground
22)
GND ground
23)
12V1 First 12V supply valtage output (Range: 10.8V to 13.2V)
24)
15.2VB 15.2V supply valtage output (Range:14.44V to 15.96V)
25)
15.2VB 15.2V supply valtage output (Range:14.44V to 15.96V)
26)
PLAM
Audio buzzer drive signal which drives audio buzzer
directly
27)
SWITCH Circuit switch indicating whether the circuit is in place
28)
P-FAN+ Drive of heat-sink fan of power board
29)
LED-BAT Drive output of battery status indicator light
30)
LED-AC Drive output of AC status indicator light
31)
PCON
Power on/off signal, LVTTL signal. When this signal is
high level, the system is on; when this signal is low level,
the system is off.
32)
BAT2+
Lithium battery 2 input, connecting to the anode of the
battery
33)
BC2
With/without Lithium battery 2 signal. High level
indicates it is with battery; low level indicates it is without
battery.
34)
BAT1+
Lithium battery 1 input, connecting to the anode of the
battery
35)
BC1
With/without Lithium battery 1 signal. High level
indicates it is with battery; low level indicates it is without
battery.
36)
GND ground
37)
P15V
Heating wire drive voltage output (Range:12.42V to
15.18V)
38)
HRT12 Pin 1 of heating wire thermistor
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