Philips AZ7900, Руководство по обслуживанию

Страница: 9 / 20

PIN DESCRIPTION OF INTEGRATED CIRCUITS
TDA1300T – HF-PREAMPLIFIER AND LASER SUPPLY CIRCUIT (part of CD-drive VAM2103)
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 O4 HF-preamp
→
CD10 output of current amplifier 4
2 O6 HF-preamp
→
CD10 output of current amplifier 6
3 O3 HF-preamp
→
CD10 output of current amplifier 3
4 O1 HF-preamp
→
CD10 output of current amplifier 1
5 O5 HF-preamp
→
CD10 output of current amplifier 5
6 O2 HF-preamp
→
CD10 output of current amplifier 2
7 LDON CD10
→
HF-preamp control pin for switching the laser on/off
8 VDDL +3 laser supply voltage
9 VRFE HF-preamp
→
equalized output voltage of sum signal of amplifiers 1...4
10 VRF not connected unequalized output
11 HG GND control pin for gain switch
12 LS +3 control pin for HF-equalization switch
13 C external connection external capacitor (bandwidth of ALPC)
14 ADJ
→
HF-preamp reference input
15 GND GND 0V supply, substrate connection
16 LO HF-preamp
→
laser diode current output to laser diode
17 MI monitor diode
→
HF-preamp laser monitor diode input
18 VDD +3 positive supply voltage
19 I2 GND photo detector input 2 (not used)
20 I5 diode array
→
HF-preamp photo detector input 5 (satellite)
21 I1 diode array
→
HF-preamp photo detector input 1 (central)
22 I3 diode array
→
HF-preamp photo detector input 3 (central)
23 I6 diode array
→
HF-preamp photo detector input 6 (satellite)
24 I4 diode array
→
HF-preamp photo detector input 4 (central)
MPC17A50VM – 4-CHANNEL H-BRIDGE SERVODRIVER
Pin Name Direction Description
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
1 CGND GND ground (control part)
2 VLG +3 power supply input (control part)
3 ERR2 CD10
→
servo driver error level input (disc speed error signal)
4 NI2
→
servo driver filter capacitor connection in ABS amp circuit section
5 OP2
→
servo driver filter capacitor connection in ABS amp circuit section
6 ERR1 CD10
→
servo driver error level input (radial error signal)
7 NI1
→
servo driver filter capacitor connection in ABS amp circuit section
8 OP1
→
servo driver filter capacitor connection in ABS amp circuit section
9 LIM
→
servo driver limit control level signal input
10 VR
→
servo driver control reference voltage input (VR=VLG/2)
11 CLK
→
servo driver clock signal input
12 OP3
→
servo driver filter capacitor connection in ABS amp circuit section
13 NI3
→
servo driver filter capacitor connection in ABS amp circuit section
14 ERR3 CD10
→
servo driver error level input (focus error signal)
15 OP4
→
servo driver filter capacitor connection in ABS amp circuit section
16 NI4
→
servo driver filter capacitor connection in ABS amp circuit section
17 ERR4 CD10
→
servo driver error level input (slide error signal)
18 PHSW GND CH4 mode setup (if PHSW=high, CH4 operates half-bridge)
19 POL not connected CH4 polarity monitor output
20 CFL4
→
servo driver pin for connecting filter capacitor
21 CFL3
→
servo driver pin for connecting filter capacitor
22 OUT4A servo driver
→
slide motor H-bridge output A
23 OUT4B servo driver
→
slide motor H-bridge output B
24 VIN34 +A CH3 and CH4 output stage power supply
25 OUT3B servo driver
→
focus actuator H-bridge output B
26 PGND34 GND CH3 and CH4 output stage ground
27 OUT3A servo driver
→
focus actuator H-bridge output A
28 OUT1A servo driver
→
track actuator H-bridge output A
29 PGND12 GND CH1 and CH2 output stage ground
30 OUT1B servo driver
→
track actuator H-bridge output B
31 VIN12 +A CH1 and CH2 output stage power supply
32 OUT2B servo driver
→
disc motor H-bridge output B
33 OUT2A servo driver
→
disc motor H-bridge output A
34 CFL1
→
servo driver pin for connecting filter capacitor
35 CFL2
→
servo driver pin for connecting filter capacitor
36 VG VG power supply input (predriver circuit)
3-1
CS 46 646