Mitsubishi Electric LC62 CHASSIS XL6500LU Service Manual page 105

PCB-POWER SUB
IC9T0,IC9T LB934T-TLM-E
OUT OUT2
9,20 5,6
,0
VS
3,4,
7,8
P-GND
2
VCC
65kΩ
80kΩ
8
S-GND
3
MD
Truth Table
Input
MD MD2 IN IN2
L L
H L
L L
L H
H H
L L
H L
L H
L H
H H
L L
H L
H L
L H
H H
H H * *
Note : "*" in the input column means "don't care". Blank in the output column means "off".
PCB-POWER
IC9M0 FA5502M-H
SYNC CT CS
4 5 
µA
OSC
5k
PWM. COMP
4.85k
CURR.AMP
R
S Q
OCP. COMP
S
0.39V
6 
IDET IFB
OUT3N OUT3P
2 
Logic circuit
65kΩ 65kΩ
80kΩ 80kΩ 80kΩ
4 5
MD2 IN
Output
OUT OUT2 OUT3P OUT3N
H L
L H
H H
L H
H L
H H
H
L
H
REF VCC ON/OFF
3 0 2
ON/OFF
REF
UVLO
3.95V/
5V
6.5V/8.9V
2.8V
.55V
ER.AMP
–
MUL +
k
.55V
OVP. COMP
.64V
2 3
IIN– VDET
Thermal
protection
circuit
65kΩ
6
IN2
Mode
Standby
Forward rotation
ch
Reverse rotation
Brake
Standby
Forward rotation
2ch
Reverse rotation
Brake
Standby
Source
Harf-
bridge
Sink
Source
Disregard IN/IN2 input
9
VC
8
OUT
7
GND
6
VIN–
5
VFB
4
OVP
- B -
IC9A6 BA00DD0WHFP
–
Vref
Driver
+
OVP OCP
TSD
2 3 4

CTL Vcc GND VOUT
IC9A2,IC9A3,IC9A5 SI-300KM-TL
IC9A4 SI-300KD-TL
VIN 2
VC 
–
+
REF
5
ADJ
4 VOUT
5 ADJ
TSD
3
GND