Read Sharp XE-A213 (serv.man4) Service Manual online
XE-A203V/A213V
HARDWARE DESCRIPTION
– 11 –
7-2-3.MODE KEY (203V/213V)
7-3. NORMAL/FLAT KEY (203V/213V) JUDGMENT
METHOD
When J1 on the main PWB is shorted, the main PWB supports NORMAL KEY.
When J1 is opened, the main PWB supports FLAT KEY.
When J1 is opened, the main PWB supports FLAT KEY.
8. USB I/F
The USB CONTROLLER (SATELLITE) is built in the CPU (M30245).
USB specifications
USB specifications
1) USB2.0 FULLSPEED
2) Self power
Related port
9. POWER/ RESET
9-1. POWER COMPOSITION
9-2. OPERATION WHEN POWER ON/OFF
When the mode key is in the OFF position, all the power lines except for
the battery backup line in the ECR are turned OFF.
the battery backup line in the ECR are turned OFF.
9-3. MASTER RESET
When the power is turned ON without a battery, master reset is per-
formed.
formed.
10. PRINTER CONTROL
10-1. STEPPINGMOTOR CONTROL
The 2-phase bi-polar stepping motor is driven at a constant voltage with
SANYO-make LB1838M.
1step: 0.087mm, 1dot: 2step
SANYO-make LB1838M.
1step: 0.087mm, 1dot: 2step
Related port
DriveSTEP
Function
Signal
name
CPU
PORT
Remark
Vbus detection
signal
signal
Vbus-
DTCT
DTCT
-
Connected to the USB connector
VBUS.
VBUS.
USB IF power
input
input
Uvcc
-
3.3V same as the CPU power
(battery backup line) is inputted.
(battery backup line) is inputted.
USB signal
USB D+
-
USB signal
USB D-
-
Low pass filter
LPF
-
Used for use of the frequency syn-
thesizer and for forming an exter-
nal filter.
thesizer and for forming an exter-
nal filter.
U S B c o n n e c -
tion detection
tion detection
ATTACH
P90
Connected to USB D+ via 1.5 k
Ω.
(ATTACH/DETACH function
enabled)
enabled)
FOR KEY I/F BOARD
MODE SWITCH
CN1
P: 2.0mm HOLE ONLY
8
9
10
11
12
13
5
1
7
2
4
6
3
SW1
GND
/VON
GND
/RESET
/S0
/S1
/S2
MOR
/S3
/S4
/S5
/S6
/S7
0
000
00
1
2
3
4
5
6
7
8
9
10
PORT
Signal name
P104
AN4
ENA1
P105
AN5
ENA2
P106
AN6
IN1
P107
AN7
IN2
Driver IC input (CPU output)
Motor drive signal
STE
P
IN1
IN2
ENA1
ENA2
A
(OUT1)
B
(OUT3)
/A
(OUT2)
/B
(OUT4)
1
L
L
H
H
H
H
L
L
2
H
L
H
H
L
H
H
L
3
H
H
H
H
L
L
H
H
4
L
H
H
H
H
L
L
H
LM2574
+ Tr.
+ Tr.
VLED
24V DRAWER
5V
VP (8V)
Blackout detection point
Blackout
detection
point
detection
point
TRANS
PQ1CG203
PQ1CG203
ON/OFF control
(MODE SW OFF position, Blackout,
control by CPU P83 )
(MODE SW OFF position, Blackout,
control by CPU P83 )
BA00AS
UPC29M33
3.3V
BH33FB1
AC
ON/OFF control
(MODE SW OFF position)
(MODE SW OFF position)
Battery
(Unit 3 x 3)
LCD backlight
Reset IC
Reset signal
Forced reset
( MODE SW SRV 'position)
( MODE SW SRV 'position)
PRINTER
Winding motor
Winding motor
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