Read Sharp DV-720H (serv.man19) Service Manual online
31
DV-720S/DV-720S(K)
DV-720H
DV-720H
• Block Diagram
10-9. IC702 BA5984FP
MOTOR DRIVER
Pin No.
Terminal name
Operation function
Pin No. Terminal name
Operation function
1
FWD
Loading driver FWD input terminal
15
VO4(+)
Driver CH4 Negative output
2
OPIN1(+)
CH1 Former stage amplifier nonreverse input terminal
16
VO4(-)
Driver CH4 Positive output
3
OPIN1(-)
CH1 Former stage amplifier reverse input terminal
17
VO3(-)
Driver CH3 Positive output
4
OPOUT1
CH1 Former stage amplifier output terminal
18
VO3(+)
Driver CH3 Negative output
5
OPIN2(+)
CH2 Former stage amplifier nonreverse input terminal
19
GND
Ground terminal
6
OPIN2(-)
CH2 Former stage amplifier reverse input terminal
20
BIAS
Bias input terminal
7
OPOUT2
CH2 Former stage amplifier output terminal
21
MUTE
Mute control terminal
8
VCC
Power terminal
22
OPOUT3
CH3 Former stage amplifier output terminal
9
VOL(-)
Loading driver Negative output
23
OPIN3(-)
CH3 Former stage amplifier reverse input terminal
10
VOL(+)
Loading driver Positive output
24
OPIN3(+)
CH3 Former stage amplifier nonreverse input terminal
11
VO2(-)
Driver CH2 Negative output
25
OPOUT4
CH4 Former stage amplifier output terminal
12
VO2(+)
Driver CH2 Positive output
26
OPIN4(-)
CH4 Former stage amplifier reverse input terminal
13
VO1(-)
Driver CH1 Negative output
27
OPIN4(+)
CH4 Former stage amplifier nonreverse input terminal
14
VO1(+)
Driver CH1 Positive output
28
REV
Loading driver REV input terminal
Note 1: Positive and negative output the driver have polarity with respect to input. (An example: 4 pin terminal voltage
‘HIGH’: 14 pin terminal voltage ‘HIGH’)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
-
+
-
+
10K
10K
16K
16K
-
+
-
+
10K
16K
10K
16K
MUTE
REV OUTF
FWD OUTR
FWD OUTR
Loading Driver
VCC
10K
10K
10K
10K
10K
10K
10K
10K
- +
Level
Shift
- +
Level
Shift
10K
10K
10K
10K
10K
10K
10K
10K
- +
Level
Shift
- +
Level
Shift
+ -
+ -
- +
- +
-+
-+
- +
- +
-+
-+
+ -
+ -
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