Toshiba BDX2500KU, Service Manual

Page: 34 / 52

5-10
IC4402 R2A30209SP
Voltage gain
x12
x6
Voltage gain
x12
x6
Voltage gain
x12
x6
D
S
P
DSP
DSP
D
S
P
D
S
P
D
S
P
A
C
T
2
+
L
O
+
A
C
T
3
+
A
C
T
1
+
A
C
T
2
-
L
O
-
A
C
T
3
-
A
C
T
1
-
O
U
T
P
U
T
R
o
n
1
.5 o
h
m
O
U
T
P
U
T
R
o
n
1 0
h
m
O
U
T
P
U
T
R
o
n
1
.5 o
h
m
O
U
T
P
U
T
R
o
n
1
.5 o
h
m
O
U
T
P
U
T
R
o
n
1
.
5 o
h
m
4 . 5 - 5 . 5V
H Bridge
P
ic
k
u
p
P
ro
te
c
t
7 - 13 . 2V
4 . 5 - 5 . 5V
For LOADING
For/ACT1/ACT2/ACT3
S
P
M
V
/
V
c
o
n
v
e
rt
e
r
S
L
ID
E
1
V
/
V
c
o
n
v
e
rt
e
r
S
L
ID
E
2
V
/
V
c
o
n
v
e
rt
e
r
CTL CTL
C
u
rr
e
n
t
s
e
n
s
e
C
u
rr
e
n
t
s
e
n
s
e
PWM
CIRCUIT
PWM
CIRCUIT
Gain Select
( SPM and ACT )
ENABLE
PWM
CIRCUIT
TSD
FG(x3)
Reverse detect
SWICHING
Commutation
Commutation
B
A
C
K
E
M
F
D
E
T
E
C
T
E
R
STARTER
CLK
C
u
rr
e
n
t
s
e
n
s
e
6 . 4MHz
Frequency
150KHz
10.8-13.2V
For SPINDLE
IP
R
O
2
IP
R
P
1
SPGS
ACGS
EN 2
EN 1
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
D
S
P
C
O
M
M
O
N
VM1
C
T
L
GND
G
N
D
S
P
L
IM
Current gain
3A
/
V
0 . 6A / V
A
C
T
1
IN
A
C
T
2
IN
A
C
T
3
IN
5
V
C
C
Current gain
0
.
88 A
/
V
Current gain
0
.
88 A
/
V
Frequency
75KHz
Frequency
75KHz
F
G
T
S
D
A
L
M
S
P
IN
R
E
F
V
M
2
S
L
2
IN
S
L
1
IN
S
l2
-
S
2
+
l
G
N
D
S
l1
+
S
l1
-
S
L
L
IM
M
V
M
3
U
V
W
G
N
D
For SLIDE
10
.
8
-
13
.
2V
S
T
M
M
+ -
+ -
- -
+ +
O
U
T
P
U
T R
o
n
1
.8 o
h
m
O
U
T
P
U
T R
o
n
1
.8 o
h
m