Sharp XE-A212 Service Manual ▷ View online
XE-A212V
SPECIFICATIONS
– 4 –
8. BATTERY
1) MEMORY BACK UP BATTERY
For memory back up, the dry battery AA (3 pieces) are needed.
1.
Memory holding time:
Approx. 1 year after New dry batteries are installed.
2.
Battery exchange method:
When the low battery symbol “L” lights up, replace the batteries (3
AA) by the following method;
AA) by the following method;
1) Power on the ECR.
2) Mode switch turn to “REG” mode.
3) Remove the OLD dry batteries (3 pieces).
4) Insert the NEW dry batteries (3 pieces).
5) Confirm the low battery symbol “L” is off.
2) LOW BATTERY
Low battery indication will appear on the left side of display when the
battery voltage is low.
CASE 1:
When any numeric entry & any item entry is not done or
just after finalization.
The machine can indicate the low battery condition. (Always)
CASE 2:
When numeric entry or item entry is done.
Battery condition will not appear.
Exceptionally, when the power is restored after a power failure, the
Exceptionally, when the power is restored after a power failure, the
low battery condition will appear on the display only when the bat-
tery is low.
And the indicator will disappear after any key entry.
And the indicator will disappear after any key entry.
[Display sample]
“
0.00” : Battery is OK.
“L
0.00” : Low battery (You have to change the batteries.)
“L
0.00” : No battery (You have to change the batteries
immediately.)
After finalization
“F
12.34” : Battery is OK.
“L
12.34” : Low battery. (“L” indicate instead of “F”.)
“L
12.34” : No battery. (“L” indicate instead of “F”.)
Note: “NO BATTERY”: When the “NO BATTERY” is display, the mas-
ter reset is executed at the timing of “POWER
ON” after the “POWER OFF”.
ON” after the “POWER OFF”.
XE-A212V
OPTIONS
– 5 –
CHAPTER 2. OPTIONS
1. OPTIONS (No)
2. SERVICE OPTIONS (No)
3. SUPPLIES
4. SPECIAL SERVICE TOOLS
CHAPTER 3. MASTER RESET AND PROGRAM RESET
1. MASTER RESETTING
Master resetting clears the entire memory and resumes initial values.
Master resetting can be accomplished by using the following procedure:
Procedure A:
1) Plugin the AC cord to the wall outlet.
2) Set the mode switch to REG position.
3) Let the ECR be witout the memory backup battery.
4) Unplug the AC cord from the wall outlet.
5) Wait over 1 minute for discharging.
6) Plugin the AC cord to the wall outlet.
The master reset can also be accomplished in the following case.
In case power failure occurs when the machine has no battery
attached to it, the master reset operation is automatically performed
after the power has been restored.
(This is because if power failure occurs with no battery attached to
the machine, all the memories are lost and the machine does not
the machine, all the memories are lost and the machine does not
work properly after power recovery; this requires the master reset
operation.)
2. PROGRAM RESETTING
(INITIALIZATION)
This resetting resumes the initial program without clearing memory.
This resetting can be operated at below sequence in PGM mode.
Procedure:
1) Unplug the AC cord from the wall outlet.
2) Wait over 1 muinite for discharging.
3) Set the mode switch to the PGM position.
4) While holding down the FEED key, plugin the AC
cord to the wall outlet.
Note: In case power failure occurs when the machine has no battery
attached to it, the master reset operation is automatically per-
formed after the power has been restored.
NO
NAME
PARTS CODE
PRICE
RANK
DESCRIPTION
1
Roll paper
TPAPR6645RC05
AY
5roll/pack
NO
NAME
PARTS CODE
PRICE
RANK
DESCRIPTION
1
RS-232 Loop-back connector
UKOG-6705RCZZ
BU
XE-A212V
HARDWARE DESCRIPTION
– 6 –
CHAPTER 4. HARDWARE DESCRIPTION
1. BLOCK DIAGRAM
XE-A212V
CPU
MITSUBISHI M30620SAFP
(INTERNAL RAM 10KB)
EXTERNAL MEMORY
SRAM
512KB
FLASH ROM
512KB
SHARP LH28F004BVT
PRINTER
M-T53
II
RS-232
1ch
2. MEMORY MAP
2-1. ADDRESS MAP
2-2. EXTERNAL BUS
VH (8V)
VLED (5.7V)
VCC
VDD
VDRW (+23.8V)
VLMP (4.3V)
RS-232
CH1
EPROM
PRINTER
CPU
RAM 10k BYTE
A0~19
D0~7
DRIVER, SENSOR
FRONT
2Line
LCD
KEY
&
SW
DRAWER1
/S0
9
DIG DRV
SEG DRV
KR0
KR7
BZ
12MHz
HC245
HC374
32.768kHz
HC375
HC245
4 to 16
Decoder
KR0
KR11
FROM
SRAM2
SRAM1
GAL
BR0~2
/CS0
/CS1,/CS2
HC
138
HIN
211
Pop up
LCD
HIN
211
Pop
up
7deg
LED
HC245
CH2
External BUS ACCESS SPEED
SRAM/EPROM/FLASH ROM ; 2 BCLK
External I/O ; 2 BCLK
*
1BCLK = 83.3ns (at 12MHz)
SRAM
/CS2 area:
/CS1 area BANK 0, 2:
/CS0 area BANK 0:
/CS1 area BANK 0, 2:
/CS0 area BANK 0:
address 08000h ~ 27FFFh 128KB
address 28000h ~ 2FFFFh 32KB x 2
address 30000h ~ 3FFFFh 64KB
address 40000h ~ 7FFFFh 256KB
address 28000h ~ 2FFFFh 32KB x 2
address 30000h ~ 3FFFFh 64KB
address 40000h ~ 7FFFFh 256KB
Reserve /CS0 area BANK 4, 5:
address 40000h ~ 7FFFFh 256KB x 2
FLASH
ROM
ROM
/CS0 area BANK 0
address 80000h ~ FFFFFh 256KB
(Moves to Bank 1 when
rewritten using EPROM)
(Moves to Bank 1 when
rewritten using EPROM)
Reserve /CS0 area BANK 6:
address 80000h ~ FFFFFh 256KB
I/O
/CS3 area BANK 0:
address 04000h ~ 07FFFh 16KB
00000h
00400h
02C00h
04000h
08000h
28000h
30000h
40000h
60000h
80000h
C0000h
FFFFFh
Bank 0
Bank 1
Bank 2
Bank 3
Bank 4
Bank 5
Bank 6
Bank 7
BR1
0
0
1
1
0
1
1
0
BR2
1
1
1
1
0
0
0
0
BR0
1
1
0
1
0
1
0
0
SFR area
Internal RAM area 10KB
Internal reserved area
External I/O
External SRAM 1
128KB
External SRAM 1
256KB
External SRAM 1 32KB External SRAM 1 32KB
External SRAM 1 64KB
External SRAM 1 32KB External SRAM 1 32KB
(Phantom)
(Phantom)
IPL SW
OFF:F-ROM
F-ROM
(Program)
(512KB)
ON:EP-ROM
(Program)
(512KB)
External
SRAM 2
SRAM 2
256KB
(Reserve)
External
SRAM 2
SRAM 2
256KB
(Reserve)
External
SRAM 2
SRAM 2
256KB
(Phantom)
External
SRAM 2
SRAM 2
256KB
(Phantom)
Flash ROM
Program 256KB
Flash ROM
(CG Data)
(Reserve)
Not used
512KB
Flash ROM
(CG Data)
(Reserve)
Not used
512KB
Not used bank 4, 5 and bank 6, 7
Even if the bank is changed, the
same address can be accssed.
same address can be accssed.
CS3
/CS2
/CS1
/RAMCS1
/CS0
/RAMCS2
Caution: The printer handler and so on should be
stored to C0000h or later.
XE-A212V
HARDWARE DESCRIPTION
– 7 –
3. PRINTER CONTROL
3-1. STEPPING MOTOR CONTROL
The two phase Bi-Polar stepping motor is driven at a constant voltage
by SANYO LB1838M.
1step: 0.087mm, 1dot: 2step
< CPU’s PORT >
< Driving steps >
*
When the motor is at rest, the same phase as the final excitation
phase is RUSH energize to turn off all phases.
3
Turn ENA1 and
ENA2 into L.
No energizing should be allowed at lease 40 ms after stopping the
motor before restarting.
motor before restarting.
When starting the motor etc, required the chopping
3-2. HEAD CONTROL
HEAD:
288 dots in all, width: 0.167mm/dot (6dot/mm)
<Related PORT>
Conduction pulse width: Refer to the M-T53
II
specifications.
*
When turning on or off the printer power supply, make sure to turn
/STB1, 2 to “H”.
*
Do not turn on without paper.
*
THERMAL HEAD power supply control : Turns ON when P105= “H”;
turns OFF when “L”. (The power supply for HEAD and STEPPING
turns OFF when “L”. (The power supply for HEAD and STEPPING
MOTOR is shared). When printing is finished (when the motor is
stopped) Athe power should be turned OFF.
*
Before printing or feeding paper, perform A/D conversion in 20 ms
after the printer head is turned ON and make sure the voltage is sta-
after the printer head is turned ON and make sure the voltage is sta-
ble.
(The power supply of the printer head should be turned ON and OFF
by using the regulator IC.)
by using the regulator IC.)
*
The head rank confirmation was abolished.
3-3. WINDING MOTOR CONTROL
<Related port>
3-4. PAPER EMPTY DETECTION
When LOW is detected twice continuously in sampling of signals for
every one dot line, it is judged as paper empty.
The threshold level of High/Low level is 2.5
m
0.2V. (Vcc = 5VDC
m
5%)
When paper empty is detected, printing is terminated. However, when
paper empty is detected during printing, 15-dot lines from detection of
paper empty is detected during printing, 15-dot lines from detection of
paper empty can be printed.
3-5. PLATEN OVER
When signals are sampled in the frequency of 1ms or less and open
state is detected twice continuously, it is judged as platen over.
If the head is conducted under the platen over state, the thermal head
life may be shortened. When, therefore, platen over is detected, printing
life may be shortened. When, therefore, platen over is detected, printing
is terminated.
Under the platen over state (switch open state), driving the paper feed
motor is inhibited.
No.
CPU PORT
Signal to be used
76
P14
IN1
75
P15
IN2
74
P16
ENA1
73
P17
ENA2
Driver IC input
(CPU output)
Motor driving signal
STEP
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
No.
I/O
PORT
Function
Signal
name
Initial
value
Port setup
in single
chip mode
18
OUT
P84
PRINTING
/STB2
H
Out L
89
OUT
P107
PRINTING
/STB1
H
Out L
30
OUT
P70
TXD2
PRINTING
DAT
(Print DATA)
H
Out L
28
OUT
P72
CLK2
PRINTING
PCLK
(Transfer Clock)
Out L
90
OUT
P106
PRINTING
/LAT
(DATA Latch)
H
Out L
91
OUT
P105
PRINTING
VPON (Head
motor POWER
SUPPLY)
L
Out L
/STB1: 1 ~ 144 dot: 144 dots in all
Total 288 dots
/STB2: 145 ~ 288 dot: 144 dots in all
OFF time of print strobe
: Conduction strobe OFF time between dots
min. 160us
Logo print ratio restriction : Average print ratio 35% or below (Same as
the M-T51)
When the print ratio at the peak one-dot
When the print ratio at the peak one-dot
line is 50%, the average print ratio of 10-
dot line including the above line should be
35% or less.
35% or less.
No. I/O
PORT Function
Signal
name
Initial
value
value
Port setup in
single chip mode
21 Out
P81
Printer motor
(Winding motor)
L
ON
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