JVC VS-DT2000 Service Manual page 32

VS-DT2000
LA6575H (IC801) : Focus & Spindle & Feed & Tracking BTL driver
1. Terminal layout
1 28
2 27
3 26
4 25
5 24
6 23
7 22
FR FR
8 21
9 20
10 19
11 18
12 17
13 16
14 15
3. Pin function
Pin No. Symbol
1 VCC2 Power supply for CH3/CH4/CH5
2 VO5- Loading output (-)
3 VO5+ Loading output (+)
4 VO4+ Tracking output (+)
5 VO4- Tracking output (-)
6 VO3+ Focus output (+)
7 VO3- Focus output (-)
8 VO2+ Spindle output (+)
9 VO2- Spindle output (-)
10 VO1+ Traverse output (+)
11 VO1- Traverse output (-)
12 VCC1 Power supply for CH1/CH2
13 VIN1 Not use
14 VIN1G Traverse drive input
GP1FA550TZ (J3601) : Fiber optic transmitter/Receiver
1. Terminal layout
1-32
2. Block diagram
28 27 26 25 24 23 22
Input MUTE
MUTE is as follows:
High: Output ON
Low : Output OFF
Thermal
shutdown
Output Level
control shift
CH5 CH4
CH5
POWER
1 2 3 4 5
Function
2. Block diagram
LED
VIN
VCC
GND
FR 21 20 19 18 17 16 15
Signal
system
power
5VREG
(External PNP_Tr)
Level Level
shift shift
CH3 CH2
6 7 FR 8
Pin No. Symbol
15 VIN2 Not use
16 VIN2G Spindle drive input
17 VIN3 Not use
18 VIN3G Focus drive input
19 REG-IN Connect to power supply
20 REG-OUT Not use
21 VREF-IN Reference voltage input terminal
22 VCCS Signal system power
23 VIN4G Tracking drive input
24 VIN4 Not use
25 MUTE Mute for CH1/CH2/CH3/CH4
26 S-GND Signal system ground
27 FWD Loading input (EJECT)
28 REW Loading input (LOAD)
Drive
IC
11k 11k
22k 22k
Level
22k
shift
11k
CH1
CH1- 4
POWER
9 10 11 12 13 14
Function