Sharp XL-1000H Service Manual page 59

IC804 VHiMM1469XH-1: Focus/Tracking/Spin/Sled Driver (MM1469XH)
Pin No.
Port Name
1 CH1-OUT-A Driver CH1 negative output
2 CH1-OUT-B Driver CH1 positive output
3 CH1-IN-A Driver CH1 input
4 CH1-IN-B Driver CH1 input, gain adjustment pin
5 Tr-B Connect to external transistor base
6 VREG-OUT Constant voltage output, connects to external transistor collector
7 MUTE Driver mute control input
8 GND GND
9 CH2-IN-B Driver CH2 input, gain adjustment pin
10 CH2-IN-A Driver CH2 input
11 CH2-OUT-B Driver CH2 positive output
12 CH2-OUT-A Driver CH2 negative output
13 Substrate GND Substrate GND
14* OP-OUT Operational amplifier output
15* OP-IN(–) Operational amplifier input, negative
16* OP-IN(+) Operational amplifier input, positive
17 CH3-OUT-A Driver CH3 negative output
18 CH3-OUT-B Driver CH3 positive output
19 CH3-IN-A Driver CH3 input
20* CH3-IN-B Driver CH3 input, gain adjustment pin
21 Vcc Vcc
22 Vcc Vcc
23 BIAS-IN Bias amplifier input
24 CH4-IN-B Driver CH4 input, gain adjustment pin
25 CH4-IN-A Driver CH4 input
26 CH4-OUT-B Driver CH4 positive output
27 CH4-OUT-A Driver CH4 negative output
28 Substrate GND Substrate GND
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
GND (lowest potential) is connected to the frame of pin center.
28 26
27
D.BUF D.BUF
T.S.D
10kΩ
D.BUF D.BUF
1 2 3
25 23 22
24
VCC
10kΩ
10kΩ
10kΩ
4 5 6 7
Figure 59 BLOCK DIAGRAM OF IC
Function
21 19
20
D.BUF
10kΩ
VCC
50kΩ
DRIVER MUTE
50kΩ
10kΩ
D.BUF D.BUF
8 9 10
– 59 –
XL-1000H/1100H
T.S.D : Thermal Shut Down
D.BUF : Driver Buffer
18 17 16 15
D.BUF
11 12 13 14