Pioneer MJ-D508 Service Manual page 56

MJ-D508
M56758FP (IC106: CORE MAIN UNIT ASSY)
5-channel Actuator Driver
Pin Assignment (Top view)
REG+
1
REGB
2
IN1+
3
VBS1
4
Vm1
5
IN1–
6
OUT1
7
VM1–
8
VM1+ 9
M56758FP
GND
10
GND
11
VM2+
12
VM2–
13
OUT2
14
IN2–
15
IN2+
16
MUTE1
17
18
MUTE2
SS. GND 19
VREF 20
VREFO
21
Pin Function
No. Name
1 REG+ Regulator voltage setting resistor connection terminal
2 REGB Regulator PNP base connection terminal
3 IN1+ E1 amplifier nonreversed input terminal
4 VBS1 Bootstrap power supply terminal
5 Vm1 Motor power supply terminal
6 IN1– E1 amplifier reversed input terminal
7 OUT1 E1 amplifier output terminal
8 VM1 (–) CH1 reversed output terminal
9 VM1 (+) CH1 nonreversed output terminal
10
GND Motor GND
11
12 VM2 (+) CH2 nonreversed output terminal
13 VM2 (–) CH2 reversed output terminal
14 OUT2 E2 amplifier output terminal
15 IN2– E2 amplifier reversed input terminal
16 IN2+ E2 amplifier nonreversed input terminal
17 MUTE1 Mute terminal (CH1 to CH4)
18 MUTE2 Mute terminal (CH5)
19 SS. GND Small-signal ground
20 VREF Reference voltage input terminal
21 VREFO Reference voltage output terminal
56
Block Diagram
5
CH3IN
42
OUT3
41
IN1+ 3
6
IN3– IN1–
40
OUT1 7
39 VBS2
38 Vm2
VM1+ 9
37 IN3+
VM1–
8
36 N.C.
VM3–
35
34 VM3+
VM2+ 12
33 GND
GND
32 VM2–
13
VM4+
31
OUT2 14
30
VM4–
IN2– 15
29 IN2+ 16
VM5+
VREFO 21
28 VM5–
OUT5
27
20
VREF
IN5–
26
VBS1
25
IN5+ 2
REGB
VREG
24 IN4+
1
REG+
23 IN4–
OUT4
22
Description
4
VBS1
–
+
R
VBS1
Vm1
R
+
–
CH1
Vrefm1
×5
–
+
VBS1
+
–
CH2 VREFO
×5
–
+
BIAS
VBS1
VBS1
–
+
E2
L: Open
MUTE ON
VBS1
–
CH
+
VREF
1 to 4
–
+ 1.25V
19 17 18
No. Name
22 OUT4 E4 amplifier output terminal
23 IN4– E4 amplifier reversed input terminal
24 IN4+ E4 amplifier nonreversed input terminal
25 IN5+ E5 amplifier nonreversed input terminal
26 IN5– E5 amplifier reversed input terminal
27 OUT5 E5 amplifier output terminal
28 VM5 (–) CH5 reversed output terminal
29 VM5 (+) CH5 nonreversed output terminal
30 VM4 (–) CH4 reversed output terminal
31 VM4 (+) CH4 nonreversed output terminal
32
GND Motor GND
33
34 VM3 (+) CH3 nonreversed output terminal
35 VM3 (–) CH3 reversed output terminal
36 N.C. Not connected
37 IN3+ E3 amplifier nonreversed input terminal
38 Vm2 Motor power supply terminal
39 VBS2 Bootstrap power supply terminal
40 IN3– E3 amplifier reversed input terminal
41 OUT3 E3 amplifier output terminal
42 CH3IN E3 amplifier nonreversed input terminal
39 38
VBS2
–
+
E3
R
Vm2 VBS2
R
+
–
CH3
×8
Vrefm2
–
+
VBS2
+
–
CH4
×8
–
+
H: Sleep
VBS2
–
+
SLEEP
VBS2
E4
+
–
CH5
CH5
×8
–
+
TSD
VBS2
–
+
E5
10 11 32 33
Description
40 IN3–
37 IN3+
41
OUT3
42
CH3IN
34
VM3+
35
VM3–
31
VM4+
30
VM4–
22 OUT4
23
IN4–
24
IN4+
29
VM5+
28 VM5–
27
OUT5
26 IN5–
25
IN5+