Printer Drive Circuit; 5-10.Ic Data - Casio 200CR Service Manual

5-9. Printer drive circuit

CPU
When CPU wants to rotate the mortor, CPU outputs "Motor" signal (L
through the motor drive circuit and then it become "L".Then Motor rotates because of difference voltage
between Motor and Motor COM TERMINAL.
Head drive signal is same as Motor drive.
5-10. IC data
1. BA12001/BA12004
IN1 1
IN2 2
IN3 3
IN4 4
IN5 5
IN6 6
IN7 7
GND 8
Head drive
circuit
HD1 ~ HD13
"L"→"H"
Motor
"L"→"H"
Motor drive
circuit
16 OUT1
15 OUT2
14 OUT3
13 OUT4
12 OUT5
11 OUT6
10 OUT7
9 COM
— 18 —
VP
HDCOM
HD1 ~ HD13
"H"→"L"
Motor
"L"→"H"
Motor
COM
VP
H), and Motor signal goes
2. LC3654
TOP VIEW
NC 1 28 Vcc
A12 2 27 WE
A7 3 26 CE2
A6 4 25 A8
A5 5 24 A9
A4 6 23 A11
A3 7 22 OE
A2 8 21 A10
A1 9 20 CE1
A0 10 19 I/O 8
I/O 1 11 18 I/O 7
I/O 2 12 17 I/O 6
I/O 3 13 16 I/O 5
GND 14 15 I/O 4
A0 ~ A12 : Address
WE : Write enable
CE1 : Chip enable 1
CE2 : Chip enable 2
I/O1 ~ I/O8 : Data
Vcc/GND : Power terminal
Printer
M405R