Service manual

– 79 –
MD-MX30/MX30W
IC3 VHiLA6558++-1: Focus/Tracking/Spin/Sled/Roading/Move Driver (LA6558)
1 VO3- CH3(-)output
2 VO3+ CH3(+)output
3 VO5- CH5(-)output Inversion when input
4 VO5+ CH5(+)output No inversion when input
5 VO4- CH4(-)outputÅ Inversion when input
6 VO4+ CH4(+)output No inversion when input
7 P-GND Power system GND(CH3,4,5)
8 S-GND Signal system GND
9 VREF Reference voltage input
10 IN-MUTE Sending BTL AMP (CH 1, 2, 4, 5) and 3.3 V, 5 V REG, "H": ON, "L": OFF
11 0-RESET Reset output (open collector)
12 VIN4 CH4input
13 VIN5 CH5input
14 VIN3+ CH3input+
15 VIN3- CH3input-
16* 5VREG 5V power output
17 VIN6- CH6input-
18 VIN6+ CH6input+
19 VIN2 CH2input
20 VIN1 CH1input
21 S-VCC Signal system VCC
22 3.3VREG 3.3 V power output
23 P-VCC Power system power supply
24 P-GND2 Power system GND(CH1,2,6)
25 V01- CH1(-)output Inversion when input
26 V01+ CH1(+)output No inversion when input
27 V02- CH2(-)output Inversion when input
28 V02+ CH2(+)output No inversion when input
29 V06- CH6(-)output
30 V06+ CH6(+)output
Pin No.
Function
Terminal Name
Set the ground (minimum potential) at the center frame.
Figure 79 BLOCK DIAGRAM OF IC
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
x2 x2
x2 x2
22k
22k
22k
22k
200
x3/8 x3/8
x3/8 x3/8
200
200
200
5VREG
3.3VREG
MUTE
RESET
SIGNAL SYSTEM VCC
POWER SYSTEM VCC
VO3-
1
VO3+
2
VO5-
3
VO5+
4
VO4-
5
VO4+
6
P-GND1
7
S-GND
8
VREF
9
IN-MUTE
10
0-RESET
11
VIN4
12
VIN5
13
VIN3+
14
VIN3-
15
VO6+
30
VO6-
29
VO2+
28
VO2-
27
VO1+
26
VO1-
25
P-GND2
24
P-VCC(IN)
23
3.3VREG(OUT)
22
S-VCC(IN)
21
VIN1
POWER SYSTEM GND
POWER SYSTEM GND
LEVEL SHIFT
LEVEL SHIFT LEVEL SHIFT
LEVEL SHIFT
LEVEL SHIFTLEVEL SHIFT
SIGNAL SYSTEM GND
REFERENCE VOLTAGE
RESET (L) WHEN VREF 0.7 V OR LESS BTL-AMP OFF
OVERHEAT PROTECTION CIRCUIT (THERMAL SHUT DOWN)
20
VIN2
19
VIN6+
18
VIN6-
17
5VREG
16