Samsung SC-140, Service Manual

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M56788FP(I.C-DRIVE)
Terminal Symbol Terminal function Terminal Symbol Terminal function
CH3IN CH3 non-inverted input VREF0 Reference voltage output
OUT3 E3 amplifier output VREF Reference voltage input
IN3- E3 amplifier inverted input SS.GND Small signal GND
VBS2 Bootstrap power supply MUTE2 CH5 mute
Vm2 Motor power supply MUTE1 CH1-4mute
N.C N.C IN2+ E2 amplifier non-inverted input
GND Motor GND IN2- E2 amplifier inverted input
IN3+ E3 amplifier non-inverted input GND Motor GND
VM3(-) CH3 inverted output OUT2 E2 amplifier output
VM3(+) CH3 non-inverted output VM2(-) CH2 inverted output
VM4(+) CH4 non-inverted output VM2(+) CH2 non-inverted output
VM4(-) CH4 inverted output VM1(+) CH1non-inverted output
VM5(+) CH5 non-inverted output VM1(-) CH1 inverted output
VM5(-) CH5 inverted output OUT1 E1 amplifier ouptut
OUT5 E5 amplifier output IN1- E1 amplifier inverted input
IN5- E5 amplifier inverted input Vm1 Motor power supply
IN5+ E5 amplifier non-inverted input VBS1 Bootstrap power supply
IN4+ E4 amplifier non-inverted input IN1+ E1 amplifier non-inverted input
IN4-
E4 amplifier inverted input REGB Regulator PNP base connect
OUT4 E4 amplifier output REG+ Regulator voltage setting resistor
- PIN DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
REG+
REGB
IN1+
VBS1
Vm1
IN1-
OUT1
VM1-
VM1+
GND
VM2+
VM2-
OUT2
GND
IN2-
IN2+
MUTE1
MUTE2
SS.GND
VREF
VREFO
CH3IN
OUT3
IN3-
VBS2
Vm2
N.C
GND
VM3+
IN3+
M56788FP
VM3-
GND
VM4+
VM4-
VM5+
VM5-
OUT5
IN5-
IN5+
IN4+
IN4-
OUT4-
1
2
3
4
5
6
7 11
8
9
10
12
13
14
15
16
17
18
19
20
21
34
35
36
37
38
39
40
41
42
,
22
23
24
25
26
27
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28
30
31
32
,
SCR-140(A4)-en 99.3.15 11:34 AM ˘ ` 25