Sharp MD-C2 Service Manual page 94

MD-C2
IC1601 VHiM56788FP-1:Motor Driver (M56788FP)
Pin No. Terminal Name
1 CH3IN CH3 non-inverted input
2 OUT3 E3 amplifier output
3 IN3- E3 amplifier inverted input
4 VBS2 Bootstrap power supply
5 Vm2 Motor power supply
6 N.C N.C
7 GND Motor GND
8 IN3+ E3 amplifier non-inverted input
9 VM3- CH3 inverted output
10 VM3+ CH3 non-inverted output
11 GND Motor GND
12 VM4+ CH4 non-inverted output
13 VM4- CH4 inverted output
14 VM5+ CH5 non-inverted output
15 VM5- CH5 inverted output
16 OUT5 E5 amplifier output
17 IN5- E5 amplifier inverted input
18 IN5+ E5 amplifier non-inverted input
19 IN4+ E4 amplifier non-inverted input
20 IN4- E4 amplifier inverted input
21 OUT4 E4 amplifier output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
CH3IN 1
OUT3 2
IN3- 3
4
VBS2
5
Vm2
6
N.C
7
GND
8
IN3+
VM3- 9
VM3+ 10
GND 12
VM4+ 13
13
VM4-
VM5+ 14
VM5- 15
OUT5 16
IN5- 17
IN5+ 18
IN4+ 19
20
IN4-
21
OUT4
IC1602 VHiLB1930M/-1: Motor Driver (LB1930M)
Function
Vm1
38
42 REG+
41 REGB
VBS1
IN1+ 40
40 IN1+
IN1- 37 –
E1
OUT1 36
39
VBS1
VBS1
38
Vm1
34
VM1+
–
CH1
37 IN1-
x5
36 OUT1 –
VM1-
35
VM1-
35
VBS1
VM1+
34
VM2+ 32
GND
33
CH2
VM2+
32 x5
VM2- 31
31 VM2-
OUT2 30
30 OUT2
VBS1
GND IN2- 28
29
IN2+ 27
28 IN2-
E2
27 IN2+
VREFO 22
VBS1
26 MUTE1
VREF 23
VREF
25 MUTE2
VBS2
24 SS.GND
REGB 41
VREG
23
VREF
REG+ 42
22
VREFO
Figure 94-1 BLOCK DIAGRAM OF IC
VCC NC
1 10
NC OUT 1
2 9
IN 1 NC
3 8
IN 2 OUT 2
4 7
S–GND P–GND
5 6
Figure 94-2 BLOCK DIAGRAM OF IC
Pin No. Terminal Name
22 VREFO
23 VREF
24 SS.GND
25 MUTE2
26 MUTE1
27 IN2+
28 IN2-
29 GND
30 OUT2
31 VM2-
32 VM2+
33 GND
34 VM1+
35 VM1-
36 OUT1
37 IN1-
38 Vm1
39 VBS1
40 IN1+
41 REGB
42 REG+
VBS1 VBS2
39 4
R R
Vm1 Vm2 R
R
Vrefm1
Vrefm2
VREFO
Hi:Sleep
BIAS
VBS1
SLEEP
Low, Open
MUTE ON
1~4
5CH
CH
1.25V TSD
25 7 11 29 33
24 26
SS.GND MUTE1 MUTE2
GND
VCC
1
IN1
60K
3
80K
CPU
IN2
60K
4
80K
5
S–GND
– 94 –
Function
Reference voltage output
Reference voltage input
Small signal GND
CH5 mute
CH1~4 mute
E2 amplifier non-inverted input
E2 amplifier inverted input
Motor GND
E2 amplifier output
CH2 inverted output
CH2 non-inverted output
Motor GND
CH1 non-inverted output
CH1 inverted output
E1 amplifier output
E1 amplifier inverted input
Motor power supply
Bootstrap power supply
E1 amplifier non-inverted input
Regulator PNP base connect
Regulator voltage setting resistor
Vm2
5
VBS2
– 3 IN3-
IN3+
+ 8
E3
2 OUT3
1 CH3IN
VBS2
+
10
VM3+
–
CH3
x8
–
9 VM3-
VBS2
+
12
VM4+
–
CH4
x8
–
13 VM4-
VBS2
– 20 IN4-
19 IN4+
E4
21 OUT4
VBS2
+
14 VM5+
–
CH5
x8
–
15 VM5-
VBS2
– 17 IN5-
+ 18 IN5+
E5
16 OUT5
C1=IµF
OUT1
9
M
7
OUT2
6
P–GND