Sharp SD-CX1W(BL), Руководство по обслуживанию

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SD-CX1W
IC1 VH+-1: Focus/Tracking/Spin/Sled Driver (LA6558)
Pin No.
Function
Terminal Name
1* VO3- CH3 (-) output.
2* VO3+ CH3 (+) output.
3 VO5- CH5 (-) output. Inversion against input.
4 VO5+ CH5 (+) output. Non-inversion against input.
5 VO4- CH4 (-) output. Inversion against input.
6 VO4+ CH4 (+) output. Non-inversion against input.
7 P-GND Power system GND (CH3, 4, 5).
8 S-GND Signal system GND.
9 VREF Reference voltage input.
10 IN-MUTE BTL AMP (CH1, 2, 4, 5) and 3.3 V, 5 VREG output. ON/OFF (“H”: Output ON, “L”: Output OFF).
11* 0-RESET Reset output (open collector).
12 VIN4 CH4 input.
13 VIN5 CH5 input.
14 VIN3+ CH3 input +.
15 VIN3- CH3 input –.
16 5VERG 5V power output.
17 VIN6- CH6 input –.
18 VIN6+ CH6 input +.
19 VIN2 CH2 input.
20 VIN1 CH1 input.
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 against input.
26 V01+ CH1 (+) output. Non-inversion against input.
27 V02- CH2 (-) output. Inversion against input.
28 V01+ CH2 (+) output. Non-inversion against input.
29 V06- CH6 (-) output.
20 V06+ CH6 (+) output.
Figure 89 BLOCK DIAGRAM OF IC
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
VO3–
VO3+ VO5– VO5+ VO4– VO4+
P-GND1
S-GND
VREF
IN-MUTE 0-RESET
VIN4
VIN5
VIN3+ VIN3–
VIN6– 5VREG
VIN6+
VIN2 VIN1
S-VCC(IN)
3.3VREG (OUT)
P-VCC(IN)
P-GND2
VO1–
VO1+
VO2–
VO2+
VO6–
VO6+
X3/8 X3/8
X3/8 X3/8
22k
22k
22k
22k
200
200
200
200
MUTE
RESET
3.3VREG
5VREG
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
+
+
–
–
+
–
+ –
+
–
Level
shift
Level
shift
X2
X2
X2
X2
Level shift
Level shift
Level shift
Level shift
Power GND
Signal GND
Standard voltage
In less than VREF 0.7V, RESET output L BTL-AMP OFF
Power VCC
Signal VCC Power GND
Heating protection circuit (Thermal shutdown)