Motor Driver - Sharp DV-600S Service Manual

11-14. IC702 BA6796FP
Pin No. Terminal name
1 OPOUT Ope amp. output terminal
2 CH4-IN CH4 Input terminal
3 CH4-IN' CH4 Gain adjustment input terminal
4 CTL1 Contorol 1 input terminal
5 CTL2 Contorol 2 input terminal
6 FWD Tray forward input terminal
7 REV Tray reverse input terminal
8 TRAY-IN Tray input terminal
9 GND Sub-straight GND
10 CH5-OUT- Tray negative output terminal
11 COM-OUT Tray positive output terminal/CH4
negative output terminal
12 CH4-OUT+ CH4 Positive output terminal
13 CH3-OUT+ CH3 Positive output terminal
14 CH3-OUT- CH3 Negative output terminal
Note 1: Positive and negative output have polarity with respect to input. (An example: 19 pin input 'H': 18 pin output 'H')
Note 2: Tray positive output and tray negative output have polarity with respect to mode. (An example: 11 pin output
'H' in FORWARD mode)
• Block Diagram
28
- +
1
CH4-IN
• Mode change table
CTL1 and CTL2
CTL1 CTL2 CH1
L L
L H
H L
H H OFF
Note: OFF state: Output has high impedance.

MOTOR DRIVER

Operation function
CH3-IN CH2-IN
24 23 22
25
27 26
10K
10K
13.3K
13.3K
-
-
+
+
Level shift
T.S.D
+
-
26.6K
LOGIC
10K
CTL1 CTL2 PWD REV
2 3 4 5 6 7
CH5-IN
CH2 CH3 CH4
OFF
ON
ON OFF
Pin No. Terminal name
15 CH2-OUT- CH2 Negative output terminal
16 CH2-OUT+ CH2 Positive output terminal
17 CH1-OUT- CH1 Negative output terminal
18 CH1-OUT+ CH1 Positive output terminal
19 CH1-IN CH1 Input terminal
20 CH1-IN' CH1 Input terminal for gain adjustment
21 VCC VCC
22 CH2-IN CH2 Input terminal
23 CH2-IN' CH2 Input terminal for gain adjustment
24 CH3-IN CH3 Input terminal
25 CH3-IN' CH3 Input terminal for gain adjustment
26 VREF-IN Bias amp. input terminal
27 OPIN+ Operational amplifier nonreverse input terminal
28 OPIN- Operational amplifier reverse input terminal
CH1-IN CH1-OUT
21 20 19 18
VCC
10K D
13.3K
Level shift
-
+
Level shift
Level shift
D D
V/I
8 9 10 11
CH5-OUTCH4-OUT CH3-OUT
T.S.D ; Thermal shutdown
D; Drive buffer
Unit of resistance is [Ω].
For F and R (CH5 control, valid only when CH5 is ON)
CH5 F R
L L
ON
L H
OFF H L
ON H H
11-18
Operation function
CH2-OUT
17 16 15
D
D D
D D D
12 13 14
Output mode
High impedance
Reversing (reverse)
Forward rotation (forward)
Brake
DV-600S
DV-600H