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TTP-248M Bar Code Printer
Service Manual
3.10 Motor System Circuit
STEP
PHASE
1
2
3
4
INA_R
ON
ON
/INA_R
ON
ON
INB_R
ON
ON
/INB_R
ON
ON
Table 5. Stepping Motor Pattern
C40
15nF
C41
15nF
C48
220nF
C49
220nF
C42
15nF
C43
15nF
C29
0.1uF
VMM
VDD
GND
GND
GND
GND
GND
C28
0.1uF
GND
MGND
R89
1\5w
R90
1\5w
R93
2.4K
R97
2.4k
GND
MGND MGOD
C52
0.01uF
C53
0.01uF
R99
8.2
R100
8.2
C56
1500pF
R103
22K
VDD
GND
1
2
3
4
JP14
4PIN
STEPPING_MOTOR
/INB_R
INB_R
INA_R
/INA_R
EN_MA
C60
2200uF
MGND
MOTER_C
GND
1
NC
2
NC
3
OUT2
4
Vs
5
OUT1
6
BOOT1
7
IN1
8
NC
9
GND
10
GND
11
NC
12
IN2
13
BOOT2
14
Vref
15
SENSE
16
ENABLE
17
NC
18
NC
19
GND
20
U12 L6201PS
GND
1
NC
2
NC
3
OUT2
4
Vs
5
OUT1
6
BOOT1
7
IN1
8
NC
9
GND
10
GND
11
NC
12
IN2
13
BOOT2
14
Vref
15
SENSE
16
ENABLE
17
NC
18
NC
19
GND
20
U13
L6201PS
R/C
1
OSC
2
SYNC
3
POWER_ENABLE
4
IN1
5
IN2
6
IN3
7
IN4
8
GND
9
NC
10
NC
11
VSENSE1
12
OUT4
13
OUT3
14
OUT2
15
OUT1
16
VSENSE2
17
REF1
18
REF2
19
VCC
20
U16
L6506D_SO
R89A
1\5W
R90A
1\5W
EN_MB
Fig. 3.8 Stepping Motor Circuit
MOTER_C pin is adjusted by CPU D/A (pin 206) to pass the current of motor.
Pin EN_MA is used to enable U13 Driver.
Pin EN_MB is used to enable U12 Driver.