Sharp DV-NC55U Service Manual page 72

DV-NC55U/C/M
11-12. IC7701 BA5984FP
Pin No. Terminal name
1 LD-FWD
2 SL_IN(+)
3 SL_IN(-)
4 SLOUT
5 SP_IN(+)
6 SP_IN(-)
7 SP_OUT
8 VCC
9 LD(-)
10 LD(+)
11 SPIN(-)
12 SPIN(+)
13 SL(-)
14 SL(+)
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')
• Block Diagram
28
1
MOTOR DRIVER
Operation function
Loading driver FWD input terminal
CH1 Former stage amplifier nonreverse input terminal
CH1 Former stage amplifier reverse input terminal
CH1 Former stage amplifier output terminal
CH2 Former stage amplifier nonreverse input terminal
CH2 Former stage amplifier reverse input terminal
CH2 Former stage amplifier output terminal
Power terminal
Loading driver Negative output
Loading driver Positive output
Driver CH2 Negative output
Driver CH2 Positive output
Driver CH1 Negative output
Driver CH1 Positive output
27 26 25 24 23
10K
16K
-
Loading Driver
+
REV OUTF
FWD OUTR
+
10K
-
16K
2 3 4 5 6
Pin No. Terminal name
15 V04(+)
16 V04(-)
17 V03(+)
18 V03(-)
19 GND
20 BIAS
21 MUTE
22 FO_OUT
23 FO_IN(-)
24 FO_IN(+)
25 TR_OUT
26 TR_IN(-)
27 TR_IN(+)
28 REV
22 21 20
MUTE
10K
16K
-
+
+
10K
-
16K
VCC
7 8 9
72
Operation function
Driver CH4 Negative output
Driver CH4 Positive output
Driver CH3 Negative output
Driver CH3 Positive output
Ground terminal
Bias input terminal
Mute control terminal
CH3 Former stage amplifier output terminal
CH3 Former stage amplifier reverse input terminal
CH3 Former stage amplifier nonreverse input terminal
CH4 Former stage amplifier output terminal
CH4 Former stage amplifier reverse input terminal
CH4 Former stage amplifier nonreverse input terminal
Loading driver REV input terminal
19 18 17 16 15
10K
10K 10K 10K
10K 10K
10K
- +
Level
Shift
- +
Level
Shift
Level
Shift
- +
Level
Shift
- +
10K
10K
10K
10K 10K
10K
10 11 12 13 14
10K
10K
10K