Sharp CD-SW250DVD Service Manual page 90

CD-SW250DVD
IC3001 VHiLA6261//-1: Focus/Tracking/Spin/Sled Driver (LA6261)
Pin No. Terminal Name
1 VO3+
2 VO3-
3 VO2+
4 VO2-
5 VO1+
6 VO1-
7 PGND1
8* REGIN
9 PVCC1
10* REGOUT
11* VIN1
12 VIN1G
13* VIN2
14 VIN2G
15* VIN3
16 VIN3G
17* VIN4
18 VIN4G
19 FWD5
20 REV5
21 VCONT5
22 FWD6
23 REV6
24 VCONT6
25 VREFIN
26 SGND
27 SVCC
28 PVCC2
29 MUTE
30 PGND2
31 VO6+
32 VO6-
33 VO5+
34 VO5-
35 VO4+
36 VO4-
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
* Set power system GND to the minimum potential together with SGND
* Short-circuit three pins of power system SVSS and PVCC1 externally before use.
BTL Output pin (+) for channel 3.
BTL Output pin (-) for channel 3.
BTL Output pin (+) for channel 2.
BTL Output pin (-) for channel 2.
BTL Output pin (+) for channel 1.
BTL Output pin (-) for channel 1.
Power GND for channels 1,2,3 and 4 (BTL).
Regulator pin (External PNP base).
Power for channels 1,2,3 and 4 (BTL). (SVCC short-crircuited)
Regulator pin (External PNP collector).
Input pin for channel 1
Input pin for channel 1 (for gain control)
Input pin for channel 2
Input pin for channel 2 (for gain control)
Input pin for channel 3
Input pin for channel 3 (for gain control)
Input pin for channel 4
Input pin for channel 4 (for gain control)
CH5 Output change pin (FWD). Logic input for bridge.
CH5 Output change pin (REV). Logic input for bridge.
Input pin for CH5 output voltage control
CH6 Output change pin (FWD). Logic input for bridge.
CH6 Output change pin (REV). Logic input for bridge.
Input pin for CH5 output voltage control.
Reference voltage input pin.
Signal system GND
Signal system power (PVCC1 short - circuited)
Power for channel 5 and 6 (H bridge).
Input pin for BTL mute.
Power GND for channels 5 and 6 (H bridge).
H bridge Output pin (+) for channel 6.
H bridge Output pin (-) for channel 6.
H bridge Output pin (+) for channel 5.
H bridge Output pin (-) for channel 5.
BTL Output pin (+) for channel 4.
BTL Output pin (-) for channel 4.
8 – 4
Function