Philips AZ7381 Service Manual page 15

MPC17A50VM – 4-CHANNEL H-BRIDGE SERVODRIVER
Pin Name Direction
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1 CGND GND
2 VLG +3
CD7 → servo driver
3 ERR2
→ servo driver
4 NI2
→ servo driver
5 OP2
CD7 → servo driver
6 ERR1
→ servo driver
7 NI1
→ servo driver
8 OP1
→ servo driver
9 LIM
→ servo driver
10 VR
DC/DC converter → servo driver
11 CLK
→ servo driver
12 OP3
→ servo driver
13 NI3
CD7 → servo driver
14 ERR3
→ servo driver
15 OP4
→ servo driver
16 NI4
µP → servo driver
17 ERR4
18 PHSW GND
19 POL not connected
→ servo driver
20 CFL4
→ servo driver
21 CFL3
servo driver → disc motor
22 OUT4A
servo driver → disc motor
23 OUT4B
24 VIN34 +A
servo driver → track actuator
25 OUT3B
26 PGND34 GND
servo driver → track actuator
27 OUT3A
servo driver → focus actuator
28 OUT1A
29 PGND12 GND
servo driver → focus actuator
30 OUT1B
31 VIN12 +A
servo driver → slide motor
32 OUT2B
servo driver → slide motor
33 OUT2A
→ servo driver
34 CFL1
→ servo driver
35 CFL2
36 VG VG
3-8
Description
ground (control part)
power supply input (control part)
error level input (slide error signal)
filter capacitor connection in ABS amp circuit section
filter capacitor connection in ABS amp circuit section
error level input (focus error signal)
filter capacitor connection in ABS amp circuit section
filter capacitor connection in ABS amp circuit section
limit control level signal input
control reference voltage input (VR=VLG/2)
clock signal input
filter capacitor connection in ABS amp circuit section
filter capacitor connection in ABS amp circuit section
error level input (track error signal)
filter capacitor connection in ABS amp circuit section
filter capacitor connection in ABS amp circuit section
error level input (disc speed error signal)
CH4 mode setup (if PHSW=high, CH4 operates half-bridge)
CH4 polarity monitor output
pin for connecting filter for capacitor
pin for connecting filter for capacitor
H-bridge output A
H-bridge output B
CH3 and CH4 output stage power supply
H-bridge output B
CH3 and CH4 output stage ground
H-bridge output A
H-bridge output A
CH1 and CH2 output stage ground
H-bridge output B
CH1 and CH2 output stage power supply
H-bridge output B
H-bridge output A
pin for connecting filter for capacitor
pin for connecting filter for capacitor
power supply input (predriver circuit)
CS 46 469