XXV-03A
3
Ref. No Application / Function Operation / Condition / Compatibility
IC4,5 NAND D class section reverse wave, deadtime, generation and rectification
IC6 Comparator Short circuit detection of SP output
IC7 Signal amplification For SP output short-circuit detection, send the output to comparator
IC10 Element operation control Communication, display, protection, etc. control
IC11 Reset Reset signal is output when voltage goes below standard voltage
IC13 DC/DC converter Voltage on secondary side, which produces the drive signal for switching
element, will be limited to below standard voltage
IC14 Signal amplification To have µcom display current value, amplify potential differences of GND
IC15 Bi-directional buffer Send/Receive data and clock between AMP
IC16 Comparator Receive from H/U data and clock
Q1,2,5,7 Digital signal transmission Send LX-REQ-M signal to H/U
Q3,4,6,8 Digital signal transmission Send LX-DATA-S signal to H/U
Q9 Mute Mute drive signal generation
Q10 Mute Turn audio signal OFF
Q15,18,19,21,22,27,
Signal amplification, switching D class section voltage or current amplification
Q28,37~40,42~45
Q16,17 Voltage control Match the beginning of the fall to +15V when -15V power supply is OFF
Q20 Voltage control 5V power supply ON/OFF
Q23,24,35,36,41,83
Voltage control Fan voltage ON/OFF and limiting over voltage
Q25,29,84 AVR +15V
Q26,30,110 AVR -15V
Q31,33,46,109 Voltage control D class section predrive stage power supply ON/OFF
Q47 AVR D class section first stage supplementary power supply
Q52-55 Voltage current converter Over current detection when SP is shorted
Q57,58,60,61, Switching DC/DC converter switching
Q64,65,67~70
Q59,63 Voltage control
In order to have µcom display voltage value, send voltage to it only when 5V SW ON
Q62 Voltage detection Pcon detection
Q66 Voltage detection Pcon over voltage detection
Q71,72 Waveform shaping For SP output short-circuit detection, send the output to comparator
Q73,78 Voltage detection DC detection of output
Q74-77 Current amplification Switching FET drive current amplification
Q79,80 Voltage control DC/DC converter power supply ON/OFF
Q81,82 Voltage control DC/DC converter drive waveform ON/OFF
Q88,89,98,99 Voltage control 5L digital signal reception
Q95,96 Voltage control
When Comm-SW of µcom is ON, turn communication system power supply ON
Q97 Voltage control Normally 15V power supply and over voltage control
Q102,111 Voltage control
When Comm-SW of µcom is ON, turn communication system 5V power supply ON
Q103,104 Voltage control LCD backlight and illumination LED control
Q106-108 AVR µcom system 5V power supply.
COMPONENTS DESCRIPTION
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
