Sharp XE-A302U, XE-A302A Service Manual

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SERVICE MANUAL

CONTENTS

CODE : 00Z

XEA302USME

ELECTRONIC
CASH REGISTER

MODEL

XE-A302

(U and A version)

CHAPTER 1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

CHAPTER 2. OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

CHAPTER 3. MASTER RESET AND PROGRAM RESET. . . . . . . . . 4

CHAPTER 4. HARDWARE DESCRIPTION. . . . . . . . . . . . . . . . . . . . 5

CHAPTER 5. DIAGNOSTIC PROGRAM . . . . . . . . . . . . . . . . . . . . . 11

CHAPTER 6. IPL FROM EP-ROM . . . . . . . . . . . . . . . . . . . . . . . . . . 15

CHAPTER 7. CAUTION TO BE USED WHEN

CONNECTING THE RS-232 CABLE . . . . . . . . . . . . . 16

CHAPTER 8. CIRCUIT DIAGRAM AND PWB LAYOUT . . . . . . . . . 17

Parts marked with "!" are important for maintaining the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.

SHARP CORPORATION

This document has been published to be used
for after sales servic e only.
The contents are subject to change without notice.

CHAPTER 1. SPECIFICATIONS

1. APPEARANCE

Front view Rear view

Operator display
Printer cover
Receipt paper

Drawer

Drawer lock

Customer display
(Pop-up type)

Power cord

Mode switch

Keyboard

RS-232C connector

Printer

Take-up spool

Paper roll cradle

Print roller arm

Print roller
release rever

Inner cover

Paper positioning guides

2. RATING

XE-A302
Weight 27.6lb (12.5kg)
Dimensions 421 (W) x 429 (D) x 297 (H) mm

Power source AC 120V (m10%), 60Hz
Power consumption Stand-by 8W, Operating 30W (max.)
Working temperature 0°C~40°C (32°F to 104°F)

16.6 (W) x 16.9 (D) x 11.7 (H) inches

■■■■Key names

KEY TOP DESCRIPTION

0-9, 00 Numeric keys

• Decimal point Key

CL Clear key

@/FOR Multiplication key

2 Paper feed key

RA Received-on-account key

RCPT/PO Receipt print/Paid out key

RFND Refund key

CLK# Clerk code entry key
VOID Void key

AUTO Automatic sequence key

CH1, 2 Charge 1, 2 keys

CHK Check key

TAX1, 2 SHIFT Tax1, 2 shift keys

TAX TAX key

%1, 2 Percent 1, 2 keys

- Discount key

CONV Conversion key

E/J PRINT Electronic journal print key

(D-PLU) 1-75 Direct PLU 1-75 keys

DEPT1-6 Department 1-6 keys

DEPT# Department code entry key

PLU/SUB PLU/Sub department code entry key

#/TM/SBTL Non add code Entry/Time/Subtotal key

MDSE SBTL Merchandise subtotal key

CA/AT Total/Amount tender/No sale

ESC Escape key

3. KEYBOARD

3-1. KEYBOARD LAYOUT

Type Flat keyboard
Key pitch 18 (W) x 15 (H) mm
Key stroke 1.1 m 0.2mm
Caption on key top Key sheet

3-2. KEY LIST

■■■■Keyboard layout

E/J

2

PRINT

67

68

69

70

71

72

73

74

75

56

57

58

59

60

61

62

63

64

65

66

45

46

47

48

49

50

51

52

53

54

55

34

35

36

37

38

39

40

41

42

43

44

23

24

25

26

27

28

29

30

31

32

33

12

13

14

15

16

17

18

19

20

21

22

1

2

3

4

5

6

7

8

9

10

11

CLK#
DEPT

#

%1

%2

RFND

VOID

PLU

/SUB

246

135

@/FOR

CL

789
456
123
000

4. MODE SWITCH

4-1. LAYOUT

• Rotary type

AUTO

ESC

RCPT

RA

/PO

TAX

CONV

TAX2

TAX1

SHIFT

SHIFT

CH2

CH1

MDSE

CHK

SBTL
#/TM

CA/AT

SBTL

XE-A302U SPECIFICATIONS

The mode switch can be operated by inserting one of the two supplied
mode keys - manager (MA) and operator (OP) keys. These keys can be
inserted or removed only in the “REG” or “OFF” position.

– 1 –

MA

OP

OFF
VOID

PGM

Manager key (MA)

MA

REG

OP

MGR

X/Z

X

1/Z1

X2/Z2

Operator key (OP)

OP

The mode switch has these settings:
OFF: This mode locks all register operations. (AC power turns off.)

No change occurs to register data.

OP X/Z: To take individual clerk X or Z reports, and to take flash

reports.
It can be used to toggle receipt state “ON” and “OFF” by press-

ing he [RCPT/PO] key.

REG: For entering sales.
PGM: To program various items.
VOID

: Enters into the void mode. This mode allows correction after

finalizing a transaction.

MGR: For manager’s entries. The manager can use this mode for an

override entry.

X1/Z1: To take the X/Z report for various daily totals.
X2/Z2: To take the X/Z report for periodic (weekly or monthly) consoli-

dation.

5. DISPLAY

5-1. OPERATOR DISPLAY

Display device : LCD
Number of line : 2 line
Number of positions : 16 positions
Color of display : Yellow / Green
Character form : 7 segment + Dp
Character size : 14.2 (H) x 7.9 (W) mm

Layout:

5-2. CUSTOMER DISPLAY

Display device : LED
Number of line : 1 line
Number of positions : 7 positions
Color of display : Yellow / Green
Style : Pop up type
Character form : 7 segment + Dp
Character size : 14.2mm (H) x 7.9mm (W)

Layout:

■■■■Operator display

Function message display area

Clerk code or mode name

Receipt OFF indicator

Repeat / Sentinel mark / Power save mark

• Clerk code or Mode name
The mode you are in is displayed. When a clerk is assigned, the clerk

code is displayed in the REG or OP X/Z mode. For example, “*01*”
is displayed when clerk 01 is assigned.

• Repeat
The number of repeats is displayed, starting at “2” and incremental

with each repeat. When you have registered ten times, the display

will show “0” (2 3 3......9 3 0 3 1 3 2...)

• Sentinel mark
When amount in the drawer reaches the amount you prepro-

grammed, the sentinel mark “X” is displayed to advise you to remove
the money and put it in a safe place.

• Power save mark
When the cash register goes into the power save mode, the power

save mark (decimal point) lights up.

• Function message display area
Item labels of departments and PLU/subdepartments and function

texts you use, such as %1, (-) and CASH are displayed.
When an amount is to be entered or entered, “AMOUNT” is dis-

played: When an amount is to be ent ered, ------- is displayed at the
numeric entry area with “AMOUNT”. When a preset price has been
set, the price is displayed at the numeric entry area with “AMOUNT”.

• Numeric entry display area
Numbers entered using numeric keys are displayed here.

Date and time display

Date and time appear on the display in the OP X/Z, REG, or MGR
mode. In the REG or MGR mode, press the [#/TM/SBTL] key to dis­play the date and time.

Error message

When an error occurs, the corresponding error message is displayed
in the function message display area.

Numeric entry display area

■■■■Customer display (Pop-up type)

Power save mark
(Lighting the mark only under the power save mode)

XE-A302U SPECIFICATIONS

– 2 –

6. PRINTER

7. DRAWER

6-1. PRINTER

• Part number : M-T53II

• NO. of station : 1 (Receipt or journal)

• Validation : No

• Printing system : Line thermal

• No. of dot : 288 dots

• Dot pitch : Horizontal 0.167mm
Vertical 0.174mm

• Font : 10 dots (W) x 24 dots (H)

• Printing capacity : max. 24 characters

• Character size : 1.67mm (W) x 4.17mm (H) at 10 x 24 dots

• Print pitch : Column distance 2.0mm
Row distance 5.21mm

• Print speed : Approximate 60mm/s (12 lines/sec)

• Paper feed speed

(Manual feed)

• Reliability : Mechanism LIFE 6 million lines used to high-

• Paper end sensor : Set up

• Cutter : No

• Near end sensor : No

: Approximate 60mm/s (12 lines/sec)

quality thermal paper

6-2. PAPER

• Paper roll dimension : 57.5 m 0.5mm in width

Max. 80mm in diameter

• Paper quality : High-quality thermal paper

paper thickness: 0.06 to 0.08mm

[OUTLINE]

• Standard equipment: Yes

• Max. number of additional drawers: 0

• The drawer consists of:

1) Drawer box (outer case) and drawer

2) Coin case (for SEC)

3) Money case

4) Lock (attached to the drawer)

[SPECIFICATION]
7-1. DRAWER BOX AND DRAWER

Model name of the drawer box SJ423
Size 420 (W) x 426 (D) x 114 (H) mm

Color Gray (PB-N8.0)
Material Metal
Bell —
Release lever Standard equipment: situated at the

Drawer open sensor —
Separation from the main unit —

16.5 (W) x 16.8 (D) x 4.5 (H) inches

bottom

7-2. MONEY CASE

Separation from the drawer Allowed
Separation of the bill compartments from the

coin compartments
Bill separator Allowed
Number of compartments 5B/6C

Allowed

6-3. LOGO STAMP

• No

6-4. PRINTING AREA

Number of thermal head heater elements 288 dots

(4.75) (4.75)48 (288 dots)

print area

(max.24 characters)

0.167

57.5±0.5

(Paper dimension)

(units : mm)

5B/6C

7-3. LOCK (LOCK KEY : LKGIM7331BHZZ)

Location of the lock: Front
Method of locking and unlocking:

To lock, insert the drawer lock key into the lock
and turn it 90 degrees counter clockwise.
To unlock, insert the drawer lock key and turn it
90 degrees clockwise.

Key No: SK1-1

SK1-1

k

c

o

L

k

c

o

l

n

u

8. BATTERY

8-1. MEMORY BACK UP BATTERY

Built-in battery: Rechargeable batteries, memory holding time about 1

month (with fully charged built-in batteries, at room
temperature)

XE-A302U SPECIFICATIONS

– 3 –

CHAPTER 2. OPTIONS

1. OPTIONS (NO)

2. SERVICE OPTIONS (NO)

3. SUPPLIES

NO NAME PARTS CODE

1 Thermal roll paper TPAPR6656RC05 BA 5 ROLLS/PACK

PRICE

RANK

4. SPECIAL SERVICE TOOLS

NO NAME PARTS CODE

1 RS-232 Loop-back connector UKOG-6705RCZZ BC

PRICE

RANK

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) Unplug the AC cord from the wall outlet.

2) Set the mode switch to the PGM position.

3) While holding down both the JOURNAL FEED key
and [CL] key, 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
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) Set the mode switch to the PGM position.

3) While holding down both JOURNAL FEED key and
RECEIPT 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 per­formed after the power has been restored.

DESCRIPTION

DESCRIPTION

XE-A302U OPTIONS

– 4 –

CHAPTER 4. HARDWARE DESCRIPTION

1. BLOCK DIAGRAM

XE-A302U

VH (8V)
VLED (5.7V)
VCC
VDD
VDRW (+23.8V)
VLMP (4.3V)

Pop up
LCD

A0~19

D0~7

BR0~2
/CS0

/CS1,/CS2

HC
138

HIN
211

RS-232

CPU

RAM 10k BYTE

HIN
211

CH2

CH1

12MHz

32.768kHz

DRIVER, SENSOR

PRINTER

CPU

MITSUBISHI M30620SAFP
(INTERNAL RAM 10KB)

EXTERNAL MEMORY

SRAM 512KB
FLASH ROM 512KB

SHARP LH28F004BVT

PRINTER

M-T53II

RS-232

1ch

Battery

Ni-MH

BZ

DRAWER1

SRAM1

SRAM2

HC375

HC245
HC374

HC245

4 to 16
Decoder

HC245

GAL

DIG DRV

SEG DRV

/S0 9

KR0 KR7

KR0 KR11

FROM

EPROM

FRONT
2Line
LCD

Pop

up
7deg
LED

KEY

SW

2. MEMORY MAP

2-1. ADDRESS MAP

Bank 0 Bank 1 Bank 2 Bank 3 Bank 4 Bank 5 Bank 6 Bank 7

BR0 1 1010100
BR1

BR2

00000h

00400h
02C00h

04000h

08000h

External SRAM 1 32KB External SRAM 1 32KB

28000h
30000h
40000h

External SRAM 1

60000h

80000h

C0000h

FFFFFh

&

256KB

IPL SW

F-ROM

OFF:F-ROM

(Program)

ON:EP-ROM

(512KB)

(Program)

(512KB)

Even if the bank is changed, the
same address can be accssed.

Internal RAM area 10KB

Internal reserved area

External SRAM 1 64KB

Flash ROM

Flash ROM

(CG Data)

(CG Data)

(Reserve)

(Reserve)

Not used

Not used

512KB

Flash ROM

Program 256KB

2-2. EXTERNAL BUS

External BUS ACCESS SPEED

SRAM/EPROM/FLASH ROM ; 2 BCLK
External I/O ; 2 BCLK *1BCLK = 83.3ns (at 12MHz)

SRAM

Reserve

FLASH
ROM

Reserve /CS0 area BANK 6: address 80000h ~ FFFFFh 256KB

I/O /CS3 area BANK 0: address 04000h ~ 07FFFh 16KB

/CS2 area:
/CS1 area BANK 0, 2:
/CS0 area BANK 0:

/CS0 area BANK 4, 5:
/CS0 area BANK 0

00110110

SFR area

External I/O

External SRAM 1

128KB

External SRAM 1 32KB External SRAM 1 32KB

(Phantom) (Phantom)

External

External
SRAM 2

256KB

(Reserve)

512KB

Not used bank 4, 5 and bank 6, 7

Caution:

The printer handler and so on should be

stored to C0000h or later.

SRAM 2

256KB

(Reserve)

External
SRAM 2

256KB

(Phantom)

(Phantom)

address 08000h ~ 27FFFh
address 28000h ~ 2FFFFh
address 30000h ~ 3FFFFh 64KB
address 40000h ~ 7FFFFh 256KB

address 40000h ~ 7FFFFh 256KB x 2
address 80000h ~ FFFFFh 256KB

(Moves to Bank 1 when
rewritten using EPROM)

11110000

External
SRAM 2

256KB

CS3

/CS2
/CS1

/RAMCS1

/CS0

/RAMCS2

128KB
32KB x 2

XE-A302U HARDWARE DESCRIPTION

– 5 –

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 >

No. CPU PORT Signal to be used

76 P14 IN1
75 P15 IN2
74 P16 ENA1
73 P17 ENA2

< Driving steps >

Driver IC input

(CPU output)

STEP IN1 IN2 ENA1 ENA2

1LLHHH H L L
2HLHH L H H L
3HHHH L L H H
4 LHHH H L L H

*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 m s after stopping the
motor before restarting.

When starting the motor etc, required the chopping

Motor driving signal

A

(OUT1)B(OUT3)/A(OUT2)/B(OUT4)

3-2. HEAD CONTROL

HEAD: 288 dots in all, width: 0.167mm/dot (6dot/mm)

<Related PORT>

No. I/O PORT Function

18 OUT P84

89 OUT P107

30 OUT P70 TXD2

28 OUT P72 CLK2

90 OUT P106

91 OUT P105

/STB1: 1 ~ 144 dot: 144 dots in all
/STB2: 145 ~ 288 dot: 144 dots in all

(Transfer Clock)

motor POWER

Signal

name

PRINTING

/STB2

PRINTING

/STB1

PRINTING

DAT

(Print DATA)

PRINTING

PCLK

PRINTING

/LAT

(DATA Latch)

PRINTING

VPON (Head

SUPPLY)

Total 288 dots

Port setup

Initial

value

in single

chip mode

H

H Out L

H Out L

H Out L

L

Out L

Out L

Out L

Conduction pulse width: Refer to the M-T53II specifications.

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
line is 50%, the average print ratio of 10­dot line including the above line should be
35% or less.

*When turning on or off the printer power supply, make sure to turn

/STB1, 2 to “H”.

*Do not turn on without paper.
*THER MAL HEAD power supply control : Turns ON when P10 5= “H”;

turns OFF when “L”. (The power supply for HEAD and STE PPING
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 sta­ble.
(The power supply of the printer head should be turned ON and OFF
by using the regulator IC.)

*The head rank confirmation was abolished.

3-3. WINDING MOTOR CONTROL

<Related port>

No. I/O

21 Out P81 Printer motor

PORT

Function

Signal

name

(Winding motor)

Initial
value

Port setup in

single chip mode

LON

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 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
is terminated.

Under the platen over state (switch open state), driving the paper feed
motor is inhibited.

1 288

XE-A302U HARDWARE DESCRIPTION

– 6 –

4. CPU

• M16C/64A Group: M30620SAFP

• Processor mode = Microprocessor mode

• Internal reserve area, without expansion

• Multi function 16-bit Timer: Ou tput syste m 5 lines + input system 6 l ines

• Serial I/O:

PIN

PORT

No.
P00 88 I/O D0 D0 Out L P54 42 O /HLDA (NU) Out L
P01 87 I/O D1 D1 Out L P55 41 I /HOLD /HOLD In
P02 86 I/O D2 D2 Out L P56 40 O ALE (NU) Out L
P03 85 I/O D3 D3 Out L P57 39 I /RDY /RDY In
P04 84 I/O D4 D4 Out L P60 38 O /RTS0 /RS2 H In RS-232 /RS2
P05 83 I/O D5 D5 Out L P61 37 O CLK0 N.U. (FSCK) L Out L FMC DSCK
P06 82 I/O D6 D6 Out L P62 36 I RXD0 RD2 In RS-232 RD2
P07 81 I/O D7 D7 Out L P63 35 O TXD0 SD2 L Out L RS-232 SD2
P10 80 O P10 /PLCS H Out L

I/O

Pin

name

Signal

name

Initial
value

OFF

MODE

Function PORT

Pop up LCD

Chip Select

P11 79 O P11 /PLRD H Out L

Pop up LCD

Read clock

P12 78 O P12 /PLWR H Out L

Pop up LCD

Write clock

P13 77 O P13 PLDATA L Out L

Pop up LCD

serial DATA

P14 76 O P14 IN1 L Out L

Paper feed

motor (IN1)

P15 75 O P15 IN2 L Out L

Paper feed

motor (IN2)

P16 74 O P16 ENA1 L Out L Paper feed

P17 73 O P17 ENA2 L Out L Paper feed

P20 72 O A0 A0 Out L P74 26 O P74 /ER1 H Out L RS-232 /ER1
P21 71 O A1 A1 Out L P75 25 I P75 /CD1 In RS-232 /CD1
P22 70 O A2 A2 Out L P76 24 I P76 /CS1 In RS-232 /CS1
P23 69 O A3 A3 Out L P77 23 I P77 /DR1 In RS-232 /DR1
P24 68 O A4 A4 Out L P80 22 O P80 BUZZER L Out L
P25 67 O A5 A5 Out L P81 21 O P81 MOTOR L In

P26 66 O A6 A6 Out L P82 20 I /INT0 /POFF In Power interruption
P27 65 O A7 A7 Out L P83 19 O /INT1 /WP H Out L FROM /WP
P30 63 O A8 A8 Out L P84 18 O P84 /STB2 H In PRINTER /STB2
P31 61 O A9 A9 Out L P85 17 I /NMI (NU) In
P32 60 O A10 A10 Out L P86 11 O
P33 59 O A11 A11 Out L P87 10 I XCIN XCIN 32.768kHz
P34 58 O A12 A12 Out L P90 7 I P90 MDR In MODE KEY SE NSE
P35 57 O A13 A13 Out L P91 6 I P91 MSENS In MISCELLANEOUS SENSE
P36 56 O A14 A14 Out L P92 5 O P92 BR1 L Out L BANK signal1
P37 55 O A15 A15 Out L P93 4 O P93 BR0 L Out L BANK signal0
P40 54 O A16 A16 Out L P94 3 O P94 /LDCS H Out L LCD DATA LATCH signal
P41 53 O A17 A17 Out L P95 2 O P95 BLON L Out L BACK LIGHT ON
P42 52 O A18 A18 Out L P96 1 O P96 LCDON L Out L LCD POWER ON
P43 51 O A19 A19 Out L P97 100 O P97 BR2 L Out L BANK singal2
P44 50 O /CS0 /CS0 Out H P100 97 I AN0 TM In HEAD temperature monitor
P45 49 O /CS1 /CS1 Out H P101 95 I AN1 VPTEST In HEAD voltage monitor
P46 48 O /CS2 /CS2 Out H P102 94 I AN2 VREF In Referance voltage
P47 47 O /CS3 /CS3 Out L

motor (ENA1)

motor (ENA2)

External I/O

P103 93

Chip Select

P50 46 O /WR /WR Out L P104 92 O AN4 /ER2 H In RS-232 /ER2
P51 45 O /BHE (NU) Out L P105 91 O P105 VPON L Out L PRINTER HEAD POWER
P52 44 O /RD /RD Out L P106 90 O P106 /LAT H In PRINTER DATA LATCH
P53 43 O BCLK BCLK Out L P107 89 O P107 /STB1 H In PRINTER /STB1

M16C/64A PORT MEMORY SPACE: NORMAL MODE

PROCESSOR MODE: MI CRO PROCESSOR MODE
It is used by (SEPARATE BUS 8bit Width)

PIN
No.

P64 34 O /RTS1 /RS1 H Out L RS-232 /RS1

P65 33 I P65 IPL ON In IPL ON Signal

P66 32 I RXD1 RD1 In RS-232 RD1

P67 31 O TXD1 SD1 H Out L RS-232 SD1

P70 30 O TXD2 DAT L Out L PRINTER DATA OUT

P71 29 I RXD2 N.U. (BUSY) In PRINTER DATA IN

P72 28 O CLK2 PCLK L Out L PRINTER CLOCK

P73 27 O P73 DRAWER 1 L Out L DRAWER DRIVE SIGNAL

Pin

I/O

name

XCOUT

AN3 VBAT In VBAT (Battery voltage)

I

Signal

name

XCOUT 32.768kHz

Initial
value

OFF

MODE

Printer winding motor

Function

XE-A302U HARDWARE DESCRIPTION

– 7 –

<Power supply/CONTROL pins>

PIN

PORT

BYTE 8 I BYTE Connected to VDD Vcc 62 Vcc Connected to VDD

CNVss 9 I CNVss Connected to VDD Vss 64 Vss connected to GND

/RESET 12 I /RESET AVss 96 AVss Connected to GND

Xout 13 O Xout OPEN Vref 98 Vref Connected to VDD

Vss 14 Vss Connected to GND AVcc 99 AVcc Connected to VDD
Xin 15 I Xin connected to Spectram diffusion IC
Vcc 16 Vcc Connected to VDD

I/O Pin name Function PORT

No.

PIN

I/O Pin name Function

No.

5. KEY-DISPLAY

5-1. LCD CONTROL

Basically the same as the XE-A401 and ER-A275P.

<LCD-related registers>

Function Address R/W
LCD Write Data 04001h W
LCD Read Data 04002h R
LCD Control Signal / Key Strobe Signal 04003h W
Data Latch Signal CPU port P94 W

< LCD Control Signal / Key Strobe Signal >

Address Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
04003h – E R/W RS KS3 KS2 KS1 KS0

Bit7 : Not used
Bit6 : E

Enable Signal Enable

Bit5 : R/W

H : Data read L : Data Write

Bit4 : RS

H : Data input L : Instruction Input

< Data Latch Signal >

L : LCD write data latch

5-2. KEY/DISPLAY SCAN

On the machine, the key and display scan signal is common.
KEY/display SCAN and key read should be performed at the following

timing.

1 KEY/display SCAN cycle: 10ms
2 Blanking time: 50us
3 KEY DATA READ timing: More than 10 ms from the fall of the SCAN

signal

<Key/Display-related registers>

Function Address R/W
LED Segment Signal 04000h W
LCD Control Signal / Key Strobe Signal 04003h W
Key Return Signal 04003h R

…………

…………

Wite

Read

…………

Write

< LED Segment Signal >

Address B it7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
04000h dp g f e d c b a

< LCD Control Signal/Key Strobe Signal >

Address Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0
04003h - E R/W RS KS3 KS2 KS1 KS0

Bit3 ~ 0 : KS3 ~ 0
Strobe signals for keys and POP UP Display are generated at KS3 - 0.

< Key Return Signal >

Address Bit7 Bit6 Bit5 Bit4 Bit3 B it2 Bit1 Bit0
04001h - - - ­04003h KR7 KR6 KR5 KR4 KR3 KR2 KR1 KR0

Normal Keyboard : 04003h
Flat Keyboard : 04001h + 04003h

XE-A302U HARDWARE DESCRIPTION

– 8 –

KR11 KR10

KR9 KR8

5-3. KEYSCAN MATRIX

PENDING
Others

CPU STO ST1 S T2 ST3 ST4 ST5 ST6 ST7 ST8 ST9
MODE P90 SRV PGM Time RE G MGR X1/Z1 X2/Z2 KEYBD
Others P91 PF HEAD

UP

KEYBD : 1=Normal Keyboard/0=Flat Keyboard
HEAD UP : 1=Up/0=Down
PE : 1=Paper End/0=Paper Not End
DRAWER OPEN : Reserved (1=Open/0=Close)
RS-232 CI1 :

PE DRAWER

OPEN

RS-232

CI1

5-4. DISPLAY (PEN DING )

The machine has an LCD display, 5 x 7 dots, 2 lines, 16digits, at the
front side and a 7-digit LED at the pop-up side

FRONT:

POP UP:

• Display DIGIT signal
The above ST0 ~ ST6 are display digit signals.
ST0: 1st digit ~ ST6: 7th digit

• Display SEGMENT signal
The LED segment signal is outputted by writing SEGMENT data in

the /CS3 space.
Correspondence of DATA ~ SEGMENT
D0 ~ D6 3 a ~ g
D7 3 DP

6. POWER SUPPLY

VDRW 24V

VLED 5.7V
VCC

VDD

Drawer

VLMP 4.3V

LCD

5V
5V

After detection of /POFF, power interruption must be executed within 10ms.

TRANS.

/POFF
detection point

PQ1CG203

PQ1CG203

LM2574
+ Tr.

BA00ASFP

Batterry

ON/OFF control (MODE SW)

VH 8V

PRINTER HEAD MOTOR

Winding motor

ON/OFF control
(MODE SW, /POFF, CPU P105)

7. REWRITING FLASH MEMORY

IPL from EP-ROM: After IPL SW is set to ON side the program is

started from EP-ROM by turning on the power.
The program on EP-ROM is transferred to flash
ROM by switching the banks through S-RAM.

IPL from COM: Data from the PC is written to flash ROM through

the COM port. (Max. 38.4 kbps)

8. DRAWER

The machine has a 1 channel of drawer port.
No open sensor is provided.
The driving time for the DRAWER solenoid are as follows:

50ms (max) 45ms (min)

No. I/O PORT Function Signal Name Initial value

27 OUT P73 Drawer Drive Signal L

XE-A302U HARDWARE DESCRIPTION

– 9 –

9. A/D CONVERSION

/

11. RESET

The machine has the following four signals at the A/D conversion ports.

<CPU’s PORT>

CPU

No.

PORT
97 AN0 TM PRINTER HEAD temperature monitor
95 AN1 VPTEST PRINTER HEAD voltage monitor
94 AN2 VREF Refarence voltage
93 AN3 VBAT VBAT (Battery voltage)

1 Printer head temperature monitor

A voltage divided by the printer head temperature monitoring ther­mistor and the resistor is inputted to AN0 pin.

Printer head conduction must be controlled as shown below. For
the printer head conduction time, refer to the M-T53II specifica­tions.

HEAD

tempreture

-10°C or below 929~1023 MOTOR LOCK

-10°C ~ 0°C 869~928 Pr int in conduction time at 0°C
0°C ~ 70°C 232~868 Pr int in conduction time specified

70°C or above 0~231 MOTOR LOCK

Signal

name

A/D conversion

value (DEC)

FUNCTION

Operation

in the PR-45M specifications.

The RESET signal is canceled when the power source of the device
which used the 5V system (VCC, VDD, VLED) reaches the operating
voltage.

The RESET signal is generated under the following conditions.

1) When the mode key switch is set from SRV' to another position
(except for OFF position).

2) When the power is turned on after 5sec or more from turning off the
power and the VCC reaches 5V.

3) When the mode key switch is set from OFF position to another posi­tion (except for SRV’ position) and VCC reaches 5V. (If the OFF
time is within 5sec, the RESET signal may not be supplied.)

12. POFF

The POFF signal is changed from 0 to 1 when the 5V power and the
24V power reach the operating voltage level. When they fall below the
operating voltage level, the POFF signal is changed from 1 to 0.

<POFF, RESET TIMING CHART>

4.5V

+5V

20.8V

+24V

2 Printer head voltage monitor

A voltage supplied by the printer head power through the printer
and divided by the resistor is inputted to AN1 pin. The A/D conver­sion value is read after turning the VPON signal (CPU P105) to
HIGH and stabilizing the voltage (20msec).

The print enable voltage range is 7.5V ~ 8.0V (A/D value: ??? ~
???). The voltage is calculated from the AN1 value and the A/D
conversion value of the AN2 reference v oltage. For the calculation
method, refer to the M-T53II specifications.

3 Reference voltage

The CPU power VDD is used as the reference voltage.

4 Battery remaining voltage

NO BATTERY 3.0V
LOW BATTERY 3.3V

10. BUZZER

PIEZO type BUZZER
The oscillating frequency is 4.0kHz m 0.5kHz

POFF

POWER ON

MOMENTARY
STOP

POWER OFF

In the model where a dry cell is used as the bakc-up battery, the CPU
monitors the battery voltage when it operates. When the voltage falls
below 2.8V, the RESET signal is supplied to prevent against malfunc­tion of the CPU.

XE-A302U HARDWARE DESCRIPTION

– 10 –

CHAPTER 5. DIAGNOSTIC PROGRAM

1. TEST ITEMS

The test items are as follows:

Code Description

1) 100 Display buzzer test

2) 101 Key code

3) 102 Printer test

4) 104 Keyboard test

5) 105 Mode switch test

6) 106 Printer sensor test

7) 107 Clock display test

8) 110 Drawer 1 open & sensor test

9) 120 External RAM test

10) 121 CPU internal RAM test

11) 130 FLASH ROM test

12) 160 AD conversion port test

13) 500 RS232C test

*S tarting DIAG.

Mode switch: PGM
Key operation: Above code + “RCPT/PO” key

2.

DESCRIPTION OF EACH DIAG PROGRAM

1) DISPLAY BUZZER TEST

1 Key operation

100 3

2 Test procedure

RCPT/PO

OP display

DISP

BUZZER

PGM

0123456789ABCDEF

Rear display

The decimal point on the LED and the cursor on the LCD will shift
from the lower digit to the upper digit in steps of 1 digit (every 200
msec)
After that, all segments will turn on (about 1 sec)
These two modes are repeated.
At the same time, the buzzer sounds continuously.

3 Check:

A) Each position is correctly displayed.
B) The brightness of each number is uniform.
C) The buzzer sound is normal.

4 End of testing

You can exit the test mode by pressing any key. The following is
printed.

4.5.6.7.8.9.0.

100

2) KEY CODE

1 Key operation

101 3

2 Test procedure

OP display

3 Check:

4 End of testing

You can exit the test mode by turning the mode switch to a position
other than the PGM mode. The printer prints as follows:

RCPT/PO

KEY

KEY code : Every time a key is pressed, the hard code of th at key

is displayed as a decimal number.
When a key is pressed twice or pressed in an incorrect
manner, --- will be displayed.

CODE

PGM

KEY CODE

101

XE-A302U DIAGNOSTIC PROGRAM

– 11 –

3) PRINTER TEST

1

Key operation
102 3

2

Test procedure

RCPT/PO

OP display

PRINTER

PGM

5) MODE SWITCH TEST

1 Key operation

105 3

2 Test procedure

RCPT/PO

OP display

MODE

105

SW

PGM

X

ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZ

3 lines of 24 digits are printed.

At the receipt setting, the logo is also printed and the receipt is
issued.

3

Check:
The print is free from contamination, blur, and uneven density.

4

End of testing
The test will end automatically.

4) KEYBOARD TEST

1

Key operation
_ _ _ _104 3

2

KEY check sum code

2

Test procedure
The keyboard is checked using the sum check code of the key code.

If the sum check code is not entered, the check is made using the
sum check code of the default keyboard arrangement.
The sum check data for each model is entered to the front 4 digits of
the DIAG code, and that data is compared with the key data added
until the final key (TL) is pressed.
Both data are the same, the test ends, printing the number given
below.
If both data are different, the printer prints the error message.

OP display

RCPT/PO

KEY

BOARD

PGM

104

KEY CODE

MODE: PGM_ _ _OP X/Z_REG_MGR_X1/Z1_X2/Z2__PGM

1 2 OFF 3 4 5 6 7 1

X :

The above X must be read in the correct order. (If the contact is
open, 9 will be displayed.)

3

Check:
The display during testing and the content of the completion print.

4 End of testing

When the test ends normally
When an error occurs: E – ~ –

105
105

6) PRINTER SENSOR TEST

1 Key operation

106 3

2 Test procedure

Check the status of the paper end sensor and head up sensor.

3

Check the following.

4 End of testing

You can exit the test mode by pressing any key and the printer prints
the following.

RCPT/PO

OP display

H/P
106

X: 1 - Paper present

O - No paper

Y: 1 - Thermal head down

O - Thermal head up

SENSOR

PGM

XY

106

7) CLOCK TEST

1

Key operation
107 3

2

Test procedure

OP display

RCPT/PO

TIM

ER

CHECK

PGM

3

Check:
A) The content of completion print

4

End of testing

When the test ends normally:
When an error occurs:

(xxxx is the value which added the key code.)

Note: Calculation of key sum check data

Hard codes (hexadecimal number) at the position (excluding
feed key) where there is an input data contact are added.
However, the end key (TL) is not added.
This data to which hard codes have been added is converted into
a decimal number value, which will become the sum check data
that will be entered when DIAG is started.

E – – xxxx

3

104
104

XE-A302U DIAGNOSTIC PROGRAM

– 12 –

Check:
“–“ blinks and the clock counts up.

4

End of testing
When any key is pressed, the date and time are printed and the test

mode will be terminated.

year

month

day

Hour

Blinks at an interval of 0.5 sec.

hour

min.

sec.

Min. Sec.

107YYMMDD hhmmss

8) DRAWER 1 OPEN & SENSOR TEST

1

Key operation
110 3

2 Test procedure

RCPT/PO

OP display

DRAWER

1

PGM

X

X : O = DRAWER OPENED

C = DRAWER CLOSED

3

Check:
A) The drawer 1 opens normally.
B) The sensor correctly indicates the status of the drawer 1.

*On the XE-A302U, “C” (CLOSED) is always displayed, because

the sensor is not equipped.

4 End of testing

You can exit the test mode by pressing any key. The printer prints
the following.

110

9) EXTERNAL RAM TEST

1

Key operation
120 3

2

Test procedure
The standard 512 Kbyte RAM is checked.
The contents of memory must be stored before and after this test.
RAM (Bank0: 08000H~7FFFFH area, Bank2: 28000H~2FFFFH area)

is tested in the following procedure:
a) Store data in the test areas
b) Write “00H”
c) Read and compar e “00H” and then write”55H”
d) Read and compare “55H” and then write “AAH”
e) Read and compare “AAH”
f) Restore stored data
If an error occurs at a step, the error is printed.

If any error does not occur, the following addresses are checked in
turns.

Addresses to be checked:

RCPT/PO

08000H, 08001H, 08002H, 08004H, 08008H,

18000H, 20000H,
28000H (Bank0), 28000H (Bank2),
30000H, 40000H

OP display

08010H, 08020H, 08040H, 08080H,
08100H, 08200H, 08400H, 08800H,
09000H, 0A000H, 0C000H, 10000H,

RAM

PGM

120

3

Check:
A) The completion print.

4

End of testing

The program ends after printing as follows:
When the test ends normally:
When the test end abnormally: Ex – ~ –

*****

x = 1: Data error, x = 2: Address error

When an error occurs, the printer outputs the error message and the
address where the error has occurred in the area *****.

120
120

10) CPU INTERNAL RAM TEST

1 Key operation

121 3

2 Test procedure

The test program tests internal RAM (10 Kbytes) of the CPU.
The contents of memory must be stored before and after this test.
RAM (00400H ~ 02BFFH area) is tested in the following procedure.
a) Store data in the test area.
b) Write “00H”
c) Read and compare “00H” and then write “55H”
d) Read and compare “55H” and then write “AAH”
e) Read and compare “AAH”
f) Restore stored data

Addresses to be checked:

RCPT/PO

If an error occurs at a step, the error is printed.
If any error does not occur, the following addresses are checked
in turns.

01000H, 01001H, 01002H, 01004H, 01008H,

01010H, 01020H, 01040H, 01080H,
01100H, 01200H, 01400H, 01800H,

02000H

OP display

RAMCPU

PGM

121

3 Check:

The completion print.

4 End of testing

The test program ends after printing.
When the test ends normally:

When the test ends abnormally: Ex – ~ –

*****

x = 1: Data error
x = 2: Address error

If an error occurs, the printer outputs the error message and the
address where the error has occurred in the area *****.

121
121

XE-A302U DIAGNOSTIC PROGRAM

– 13 –

11) FLASH ROM TEST

1 Key operation

130 3

RCPT/PO

2 Test procedure

The test program checks that the checksum of the flash ROM

(Bank0: F80000H ~ FFFFFH).

The lower two digits of the checksum should be 10H. (pending)

OP display

ROMFLASH

PGM

130

3 Check:

The completion print.

4 End of testing

The test will automatically be terminated and the printer prints as fol­lows:

When the test ends normally:

When the test ends

ROM

E

– – ~ – –

********

********

130

(Model name)
(Version)

130

abnormally:

ROM

********

********

(Model name)
(Version)

12) AD CONVERSION PORT TEST

1 Key operation

160 3

RCPT/PO

2 Test procedure

The test program displays the voltage of each AD conversion port.

Display

OP display

TM

=

PGM

160

13) RS232C TEST

Install the RS232C loopback connector.
1 Key operation

500 3

RCPT/PO

2 Test procedure

The test program checks the control signals.

OUTPUT INPUT

/ER /RS /DR /CI /CD /CS
OFF OFF OFF OFF OFF OFF
OFF ON OFF OFF ON ON

ON OFF ON ON OFF OFF

ON ON ON ON ON ON

Data communication check
A loopback test of 256-byte data is performed between SD and RD.
DATA: $00 - $FF BAUD RATE: 9600 BPS

OP display

232

RS TEST

C

PGM

500

3 Check:

The completion print.

4 End of testing

Completion print RS TEST OK

Error print RS TEST **NG**ERxx

xx Contents of error
01 ER DR error
02 ER CI error
03 RS CD error
04 RS CS error
05 SD RD error DATA error
06 SD RD error DATA error/framing error

500

500

OP display

VRF

=

160

OP display

VPTEST

=

160

End of testing

PGM

PGM

XE-A302U DIAGNOSTIC PROGRAM

– 14 –

3. KEY CODE TABLE

XE-A302U

098

032

048

055

039

033

049

128

112

096

103

113

097

115

051

064

119

135

130

129

131

116

132

080

087

082

066

081

083

068

086

144

071

146

050

145

147

148

054

016

151

034

017

001

019

052

036

000

007

023

018

002

003

020

004

CHECK SUM :

9038

065
084
118
150
038
022
006

035
100
134
070
053
021
005

067
102
085
069
149
037
024

099
101
104
072
152
040
008

133
117
136
088
056
025
009

120
089
073
153
057
041
010

121
105
122
154
058
042
026

138
106
090
074
075
059
043

155
107
123
139
091
027
011

CHAPTER 6. IPL FROM EP-ROM

The application program of the XE-A302 is written into the Flash ROM
in the CPU.

Since the CPU supplied as a service part does not include the applica­tion program in it, the application program must be written when the
CPU is replaced with a new one.

To write the application program into the Flash ROM, connect the PC
and the XE-A302 with an RS-232C cable, and execute the PC software.

*Use a D-Sub 9pin cross cable employed in conventional communica-

tion between ECR-ECR (See APPENDIX: RS232C CABLE).

[Related parts/Tool]

PARTS NAME PARTS CODE

CPU (without application
program)

PosUtilityTool3 Software

VHI30624FGA-1 IC5

LOCATION

No.

[IPL PROCEDURE]

1) Connect the XE-A302 and PC with an RS-232C cable.

<XE-A302 side>

2) Turn off the AC Power. (& remove batteries.)

3) Open the cabinet.

4) Change the IPL JUMPER PIN (SP1) to the rear side.

<IPL software on PC>

7) Copy the following files in "PosUtilityTool3" into the hard disk of PC.
Postool3.exe
A302u.ROM

8) Boot "Postool3.exe."

9) Push [Add Files] in the screen.

10) Select the ROM DATA file. (File name: A302u.ROM)

11) By pushing [Send] in the screen, the ROM data is sent from PC to

ECR.
The address counter is shown on PC and counts up.

12) After about 3-minuites, the message "Complete" is shown on PC.

SP1 SP1

Default

5) Close the cabinet.

6) Turn on the AC Power.
(At this time, ECR looks like inactive, but ECR waits the ROM data
from PC.)

When IPL

<Main PWB>

<After booting>

<After pushing "Add Files">

*1 COM Port is selectable between COM1 and 2.
*2 For "Send Type", select "Direct".
*3 Do not select "Extra Setting".

<XE-A302 side>

12) Turn on the AC Power.

13) Open the cabinet.

14) Change the Jumper PIN (SP1) to the front side. (default position)

15) Close the cabinet.

16) Turn on the AC Power.
Master Reset will be performed. If not, power off the XE-A302, wait

1miniute and turn on the power again.

XE-A302U IPL FROM EP-ROM

– 15 –

APPENDIX: RS232C CABLE

CHAPTER 7. CAUT ION TO BE USED

The RS-232C cable has the following internal connections:

(Equivalent to a cross cable used in the conventional connection of
ECR-ECR)

9PIN D-SUB 9PIN D-SUB

SD

RD

RTS

DCD

DTR

DSR

CTS

3

2

7

1

4

6

8

SD

3

2

RD

7

RTS

1

DCD

4

DTR

6

DSR

8

CTS

WHEN CONNECTING
THE RS-232 CABLE

When connecting the RS-232 cable to the XE-A302, be sure to observe
the following condiiton:

Use RS-232 cable (with core) of accessories.
[This is a necessary to support the EMI (Electronics Magnetic

Interface).]

RS-232 CONNECTOR

SG

SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR : DATA TERMINAL READY
DSR : DATA SET READY
RTS : REQUEST TO SEND
DCD : DATA CARRIER DETECTOR
CTS : CLEAR TO SEND

55

SG

Use RS-232 cable
(with core) of
accessories.

XE-A302U CAUTION TO BE USED WHEN CONNECTING THE RS-232 CABLE

– 16 –

B

B

B

D

D

D

D

C

C

C

C

B

A

12345678

12345678

12345678

12345678

1/7

CPU

CHAPTER 8. CIRCUIT DIAGRAM AND PWB LAYOUT

R43

VCC

D6

D5D1D4

A10

/RAM1

D7D6D5D4D3

CS

RAM1

10111213141516

D0 D7D3D2

A1

A18 2

A19 2

R23

10K

R22

10K

150pF*10(C1-C10)

C18

C17

C16

C14 C15

C13

150pF*8(C11-C18 )

C12

C11

R27

10K

R26

10K

R25

10K

R24

10K

/PLCS3

/RD 2,3

C22

100pF

10K

17

4MSRAM HY628400ALLT2-70

R42

10K

VCC

R41

R40

R39

VDD

R38

R37

R36

C21

150pF

C20

150pF

51
52
53
54
55
56
57
58
59
60

A9

61
62

A8

63
64

A7

65

A6

66

A5

67

A4

68

A3

69

A2

70

A1

71

A0

72
73
74
75
76
77
78

D9

79

D8

80

IC2

M30620SAFP

R35

R34

R33

R32

R31

R30

R29

VCC VCC

R28

47K

47K

10K

10K

10K

10K

A19
A18
A17
A16
A15
A14
A13
A12
A11
A10

VCC
VSS

D15
D14
D13
D12
D11
D10

10K

10K

10K

10K

10K

10K

10K

10K

/RAM1

R54

10k

C32

100pF

VDD

3

IC4A

74LV00A

1

2

12

IC3A

74LV10A

*IC3 14pin:VDD

1

2

13

/CS1

/CS2

/CS0

/CS0 2

/CS1

/CS2

/CS3 3

/RS2 6

RXD2 6

/RD 2,3

RD

R50 100

R51 100

D12,3

VDD

HLDA

HOLD

CBCLK

AN7

AN6

C31

C30

C29

C28

C27

C26

C25

C24

D02,3

100pF*8(C24-C31)

ALE

AN5

/RDY

/RDY

CLKOUT

AN4

TXD2 6

RTS0

CLK0

TXD0

RXD0

AN3

AN2

AN1

AVSS

VREF

VBAT5

VPTEST4

VCC

C23

30pF

/WR 2,3

50494847464544434241403938373635343332

WR

CS0

CS1

CS2

CS3

BHE

D7

D6D5D4D3D2D1D0

8283848586878889909192939495969798

81

R44 100

R49 100

R45 100

R48 100C8R47 100

R46 100

D42,3

D32,3

D72,3

D22,3

D52,3

D62,3

C

C

C

C

*IC4 14pin:VDD

7pin:GND

7pin:GND

IPLON 2

/RS1 6

RXD1 6

31

CLK1

RXD1

CLKS1

AN0

VREF

AVCC

99

100

VDD

TM4

10K

R56

+

VDD

C39

(10uF/50V)

C38

0.1uF

RAMCS12

+

B

BZ1

B

B

B

B

R71

47K

<- OR ->

100K

NOT INSTALL INSTALL

PIEZO BZ

VCC

R73 470

D1

AK

BUZZER

VDD

C43

+

C42

C1A

3
1

R72

(0)

R74

330

X1

C41

1000pF

C46

(0.1uF)

+

B

BZ2

(2048BH)

(1SS355)

Q1

C2412K

EC

B

R77

R76

(2.2K)

0.1uF

10uF/50V

R75

33

1000pF

2

X2

(CST12.0MTW)

C45

27pF

PLACE NEAR CPU!!!

32.768KHz

C44

18pF

4

NC

IC6

VDD

VSS

OUT CD

SII

S-80928ANMP

2315

(12K)

VCC

C49

10uF/10V,OS

+

C48

0.1uF

678

S0

VDD

FSOUT

IC7

FS781

XIN

XOUTS1LF VSS

123

45

3

1

X3

R80

2

CST12.0MTW

C47

/RES 2,3,4/RESET3

2200pF

VDD

C50

R78

47K

R79

820

DAT 4

PCLK 4

MOTOR 4

/STB2 4

(330pF)

VCC

TXD1 6

VCC

100pF

C35

C34

C33

TXD1

TB5OUT
TB5IN
TA1OUT/V
TA1IN/V
TA2OUTW
TA2INW
TBEOUT
TB3IN
TA4OUT/U
TA4IN/U
INT0
INT1
INT2
NMI
VCC
XIN
VSS
XOUT
RESET
XCOUT
XCIN
CNVSS
BYTE
CLK3
SIN3
SOUT3
TB3IN
TB4IN
CLK4
SOUT4

SIN4

BR22

/STB14

C37

R65

10K

C36330pF

10K

R64

R63

10K

BUSY

/ER1 6

/CD1 6

/DR1 6

/CTS1 6

R62

47K

R61

47K

R60

47K

R59

47K

BUSY

100pF

100pF

30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

R58

10K

LCDON3

/LAT4

VPON4,5

/ER26

/POFF 3,5

/WP 2

DRAWER1 3

P91

P90

R68

10K

R67

10K

P913,4,6

MDR3

BR02

BR12

VDD

BLON3

/LDCS3

VREF

R70

R

A

K

IC5

KIA431A

R66

240

VCC

C40

1000pF

6

IC3B

74LV10A

345

21

21

21

21

6

IC4B

74LV00A

4

5

3

3

3

3

3.3K

C51

330pF

1000pF

8

IC4C

74LV00A

9

10

87654

87654

87654

87654

A A

A A

A A

A

/WR 2,3

C19

VCC

FRA19/SRA15 2

FRA20/SRA17 2

D[0..7]

A[0..19]

A10 2

A9 2

A8 2

R18

10K

R17

10K

R16

10K

R15

10K

R14

10K

R13

10K

R12

10K

R11

10K

R10

10K

R9

10K

R8

10K

R7

10K

R6

10K

R5

10K

R4

10K

R3

10K

R2

10K

VCC VCC

R1

10K

A72

A62

A52

D

D

D

D

100pF

R20

10K

A9

A13

A8

VDD

323130292827262524232221201918

A8

A9

A15

A17WRA13

A11RDA10

VCC

IC1

A18

A16

A14

A12A7A6A5A4A3A2A1A0D0D1D2GND

123456789

A4 A11A6A5A0A2

A3

A16

A12

A18A7A14

A11 2

A12 2

A13 2

A14 2

A15 2

A16 2

A17 2

VCC

C10

C9

C7

C6

C5

C4

C3

C2

C1

/PLRD3

/PLWR3

PLDATA3

INI2

INI1

ENA24

ENA14

A12,3

A42

A02,3

A22

A32,3

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 17 –

B

B

B

A11

/RD

A10

A9

CE

A10OEA11

10111213141516 17

A1

A3

A2

A4

VDD

(LH28F016SUT)

16M FLASH ROM

for XE-A202J/A212J

D7

D6

D7

D0

A0

B

D5

D3

D4

181920212223242526272829303132

D4D5D6

D1

D2

R89

10K

VCC

ROM SOCKET(32Pin)

C61

100pF

/RAM2

3

IC13A

74LV00A

1

2

6

RAMCS2

IC13B

4

/CS01

VDD

IC13 14Pin VDD

74LV00A

5

C64

0.1uF

+

C63

C62

7Pin GND

10uF/50V

0.1uF

D

D

D

D

2/7FLASH ROM

12345678

12345678

12345678

12345678

C60

220pF

C59

N.U. (100pF)

/RD

/WR

C54

0.1uF

VDD

+

C53

10uF/50V

C58

0.1uF

+

C57

10uF/50V

C56

N.U.(0.1uF)

VCC VCC

+

C55

10uF/50V

A17

A15

VDD

323130292827262524232221201918

A15

VCC

IC11

A18

A16

123456789

BR0

A16

A14

D7

A17

A10

VCC

40393837363534333231302928272625242322

NC

NC

A17

A10

GND

IC9

A16

A15

A14

A13

A12

123456789

A16

A13

A14

A12

A11

A15

VCC

D0

D1

D5

D2

D3

D4

333538404446495134363941454750

DQ0

DQ1

DQ2

DQ3

DQ4

IC8

A0A1A2A3A4A5A6A7A8

322827262524232220

A1

A0

A2

A3D7A7

A4

A5

C

C

C

C

/WR

/RD

A11

A10

A13

A8

D6

D5

/RAM2

A8

A9

D7D6D5D4D3

A11RDA10

CS

A17WRA13

RAM2

A14

A12A7A6A5A4A3A2A1A0D0D1D2GND

10111213141516

D1

D2

D0

A12A5A5

A1

A0

A2

A6

A7

A4

A3

D6

DQ7

A11A9A8

A9

D6

DQ5

A6

D5

DQ6

DQ5

A8

D7

DQ6

DQ7

D0

D3

D1

D2

D4

DQ4

VCC

VCCNCDQ3

DQ2

DQ1

DQ0

WE#

RP#

VPP

WP#

A18A7A6A5A4A3A2

1011121314151617181920

/RES

/WR

A18

A7

A6

0

R84

52

DQ8

DQ9

DQ15

DQ10

DQ11

DQ12

DQ13

DQ14

A9

A10

A11

A12

A13

A14

A15

19181713121110

A11

A12

A9 A9

A15

A13

A14

A10

A8

/RD

/FRCS

OE#

GND

A2

A4

A3

A16

A17

87654142

A17

A16

D3

D4

17

4MRAM HY628400ALLT

C132

100pF

A0

21

A0

CE#

LH28F004SUT-NC80

A1

A1

0

R85

32930

NCNCNC

A18

A19

A20

CE0

A18

VCC

VCC

A18/PGM

IC12

VPP

A16

123456789

VCC

R86

0

0

R87

A16

1 FRA19/SRA15

for XE-A212V,XE-A302U/A

/WP

VCC

CE1OEWEWPRP

RY/BY

BYTE

3/5 VPP

115

5455561653

31

/RD

/RES

/WP

/WR

A17

A14

A13

A9

A8

A8

A13

A14

A17

A15

A12A7A6A5A4A3A2A1A0D0D1D2GND D3

A7

A5

A6

A12

A15

94337

VCC

VCC

VCC

GND

GND

GND

214248

100pF

C65

IC13C 74LV00A

9

A

21

21

21

21

3

3

3

3

8

11

IC3C

IC13D 74LV00A

12

13

8

74LV10A

9

10

11

10

R81

10K

VCC

1

3

1 ROM COPY

S1

2

IPL SW SSS312

C52

0.1uF

IPLON1

D

D

D

D

D[0..7]1,3

10uF/50V

+

C2A

VCC

A[0..19]1,3

FRA19/SRA151

FRA20/SRA171

FRA19/SRA15

FRA18

FRA20/SRA17

/FRCS

I/O4

I/O5

I/O6

I/O7

VCC

IC10

CLK/I0I1I2I3I4I5I6I7I8

123456789

A16

A17

A19

A18

A15

RAMCS1 1

/RASPN2(NU )

/ROMCS

121314151617181920

I/O0

I/O1

I/O2

I/O3

PAL16V8H

GND OE/I9

10 11

IPLON RAMCS2

BR21

BR11

BR01

C

C

C

C

/WR1,3

/WP1

/RD1,3

/RES1,3,4

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 18 –

87654

87654

87654

87654

B

B

B

B

A A

A A

A A

A

B

B

B

D

D

D

D

C

C

C

C

B

A

CN2

3/7I/O I/F CIRCUIT

FOR POP UP

VCCVLED

VCC

& KEY I/F

C66

D[0..7]

C67

0.1uF

12345678

12345678

12345678

12345678

123456789101112131415161718192021222324252627282930313233343536373839

123456789

10111213141516171819202122232425262728293031323334353637383940

cdpe

b

g

a

d

f

KS2

KS0

KS3

KS1

KR1

*IC14

VCC:20pin

/LD0W

GND:10pin

CLR

1

VCC

KR0

/RESET

P90

P91

/RESET1

P911,4,6

MDR1

/POFF 1,5

/RES 1,2,4

74HC273

1SS355

D2

D3

AK

AK

R94

10K

0.1uF

d

cD2

b

a

2569121516

Q1Q2Q3Q4Q5Q6Q7

IC14

D1D2D3D4D5D6D7D8CLK

347

8

D1

D0

D3

dpD7

e

gD6

f

19

1314171811

D5

D4

Q8

/VON

/S9

/S2

/S4

KR4

KR3

KR2

1SS355

/S3

KR6

KR7

KR5

KR10

KR8

KR9

/S96

/S2

/S44

/S34

/VON5

/S6

KR11

/S6

BA00ASFP

IC17

40

40FE-BT-VK-N

KEY I/F RELAY CN

R96

5.6K

4

5

63

2

1

R97

10K

C76
+

for 2 Line LCD I/F

VCC

22uF/10V,OS

R98

2.4KF

123456789101112131415

CN3

R/WR/W

RSRS

DB1

DB0

GND

K

VCC

+

C77

EE

22uF/16V

SK423

FB2

C134

RIGHT-ANGLE CON

123

(JUMPER)

Q2

B

R101

+

DRAWER11

DRAWER1

DR CN(2Pin)5046-03A

FB3

C83

0.1uF

2SD2212

EC

1.8K

1SS355

D21

AK

10uF/16V

(JUMPER)

R102

22K

Q3

P91

P911,4,6

-->PATTERN SHART

FB1,2,3:JUMPER WIRE

B

KRC111S

R103

4.7K

EC
AK

D4

1SS355

/S6

/S6

21

21

21

21

3

3

3

3

CN4

12345

for Rear LCD I/F

16

F-LCD CN

B16B-XH-A

DB6

DB5

DB7

DB3

DB4

DB2

R99

LCDON

LCDON1

6

PLDATA1

/PLWR1

/PLRD1

/PLCS1

12K

R-LCD CN

CN5

STRAIGHT CON

123

DR CN(2Pin)5045-03A

FB1

F1

VDRW

CN6

STANDARD

1SR154-400

D22

C81

0.1uF

(JUMPER)

T400mA/250V

BLON

VLED

BLON1

DB[0..7]

R/W

EE

DB6

DB7

DB5

D4

D7

D6

VCC

D[0..7]1,2

11

IC4D

74LV00A

12

13

C68
+

VCC

10uF/50V

C69

0.1uF

201918171516141312

IC15

1234567

C70

10uF/50V

+

C71

0.1uF

/LE1W

11

D7

D6

D5

D4Q4LE

Q7

Q5

Q6

VCC

QEQ0D0D1Q1Q2D2Q3GND

D3

9108

D0

D3

D1

D2

/LDCS1

DB3 DB4

DB1

DB2

DB0

VCC

10K

R93

/LE1W

1691011121314

15

VCC

IC16

ABC

1234567

A0

A1 /LE0W

/WR

A01,2

A11,2

/WR1,2

VCC

C74

10uF/50V

+

74HC374

C73

10K

R95

C72

VCC

100pF

/LE3W

/LE0R

/LE1R

/LE2R

Y6Y5Y4Y3Y2Y1Y0

G2A

G2BG1Y7

GND

74HC138

8

A3

/CS3

/CS31

A31,2

IC18

C75

0.1uF

100pF

DB6

DB1

DB3

DB4

DB2

DB0

DB5

/LE2R

201918171516141312

B1B2B4B3B5B6B7

1G

VCC

DIRA1A2A3A4A5A6A8GND

A7

1234567

D7

D4

D1

D2

D3

D0

D5

D6

D2D6D0D1D3

D1

D3

D0

D2

18161412975

1Y1

1Y2

1Y3

1Y4

2Y1

2Y2

IC19

1A1

1A2

1A3

1A4

2A1

2A2

246

8

111315

KR8

KR10

KR9

/CTS26

/DR26

/CD26

/CI26

9108

2Y3

2A3

DB7

11

B8

3

2Y4

2A41G2G

17119

KR11

/LE0R

74HC245

/LE1R

74HC244

10Pin:GND

*IC19 2 0Pin:VCC

VCC

C78

10uF/50V

+

IC20

C79

0.1uF

RS

D5

D7

D4

201918171516141312

D7

D6

D5

D4Q4LE

Q7

Q5

Q6

VCC

QEQ0D0D1Q1Q2D2Q3GND

D3

1234567

D0

D2

D1

D3

KS1

KS0

KS2

KS3

KR0

KR1

KR2

KR3

KR4

KR5

KR6

KR7

C82

0.1uF

/LE3R

201918171516141312

B1B2B4B3B5B6B7

1G

VCC

IC21

DIRA1A2A3A4A5A6A8GND

1234567

D3D5D4

D2

D0

D1

11

B8

A7

74HC245

9108

D5

D7

D6

R104

10K

VCC

C84

100pF

87654

87654

87654

87654

11

74HC374

9108

VCC

VCC

R100

10K

C80

100pF

D

D

D

D

C

C

C

C

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 19 –

B

B

B

B

A A

A A

A A

A

4/7PRINTER DRIVER

12345678

12345678

12345678

12345678

(JUMPER)

F2

VP

T400mA/250V

D

D

D

D

CN7

MOTOR

1

2

MOTOR CN

C85

0.1uF

B

B

B

C

C

C

C

CN12

47uF

50V

123456789

/B

B

/A

A

0.1uF

C89

VCCVH

B2B-EH-A

Q4

2SD2212

EC

B

1K

R105

MOTOR1

C88

+

B

1011121314151617181920212223242526

VH

VH

TH

/LAT

/LAT1

CLK

/STB1

/STB2

/STB21

/STB11

PCLK1

VH

VH

LEDK

PEPE

HUPS

HUPS

R114

26FMN-BTK-A

PRINTER CN

2K

R117

4.7K

R116

C93

0.1uF

10K

A

21

21

21

21

3

3

3

3

VH

FB4

EFCB322513TS

R111

20K

C92

R115

30KF

VCC

(0)

DS

Q5

G

C87

10uF/50V

2SJ645

VP

NOT INSTALL

R167

10K

R108

(JUMPER)

R110

5.6K

Q6

2SK2731

VCC

NOT INSTALL

R109

(47K)

R19

DS

G

D18

R168

47K

1K

R112

10K

1SS355

C133

22uF/16V

AK

AK

D20

D19

1SS355

AK

1SS355

C86

0.1uF

MAX 9A

R106

VP

10KF

R107

10KF

VPTEST1

F3

T0.5AL

IC22

VCC

330pF

TM1

/B

/A

B

A

4113512108

VS1

VS2

OUT1

OUT2

OUT3

OUT4

VCC

ENA1

ENA2

IN1

1

IN2

213697

C91

10uF/50V

+

VCONT

GND

GND

14

DAT1

LB1838M

FB5

G

Q7

2SK2731

DS

D5

P911,3,6

0(EFCB322513TS)

C90

0.1uF

AK

1SS355

/S43

Q8

HUPS

B

KRC111S

P911,3,6

EC

AK

D6

1SS355

/S33

/RES1,2,3

D

D

D

D

/STB1

/STB2

C

C

C

C

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 20 –

INI11

ENA21

ENA11

INI21

87654

87654

87654

87654

B

B

B

B

A A

A A

A A

A

B

B

B

D

D

D

D

5/7POWER SUPPLY

12345678

12345678

12345678

12345678

VP +7. 5V

VPVO

ZD1

PTZ9.1B

AK

+

C96

4700uF/16V

C

C

C

C

TP2

VBAT2

VDD

1

FOR Dry Battery

R128

D13

RB551-30

R126

180

VBAT 1

22K

C101

+

(100)

R133

R132

AK

R131

47uF

VCC

VCC +5V

B

1

2

CN9

Mn BAT CN

2B-XH-A-E(BLUE)

1

2

CN13

Ni-MH BAT CN

2B-XH-A-E(B LUE)

NOTE(3) : R133 CN9 CN13

Ni-MH Battery NU X O

Dry Battery 100 O X

R135

(3.3M)

(220)

C103

0.1uF

150

/16V

for Ni-MH Ba ttery

A

21

21

21

21

Q9:HEAT SINK

TP1 VO

F5

T2.0A/250V

BD1

CP301

4

F4

UL,CSA T3.15AL/125V , (S) T3.15A/250V

POWER TRA NS1,2

V4/V7=220V-230V; V6=230-240 V

U/A=120V

SEC,SECL

for SEEG,SCA ,SUK

R119

18.0KF

L1

63uH Chock

with F USE

R118

10(FUSE R)

32

1

Q9

KTD998

1

J1

(JUMPER)

12

1

2

-+
3

C94

MYLOR

0.033uF

(WITH HOLD ER)

1

2

CN8

PS CN

B2P-VH

1

2

PS CN

R120

3.3KF

D7

FMB-G24H

AK

R122

(5.6K)

IC23

LM2574HVN

1

3
2
4

57

C98

0.1uF

22K

R121
+

+

C95

4700uF/50V

POWER TRANS3

+20% INPUT & NO LOAD: VOUT<=40V

6,8pin: N.C

100V 50 Hz/60Hz

SW1

for JAP AN

D12

AK

C100

/16V

+

330uF

1SR159-200

3

3

3

1KF

3KF

R134

R127

VOUT=1.23X(1+R2/R1)

D11

AK

VLED

R124

0

Q10

KRC106S

EC

B

D8

AK

R125

2.2K

VPON1,4

PS CN

+20% INPUT & NO LOAD: VOUT<=40V

SW DPST

1SS355

AK

AK

D10 1SS355

D9 1SS3 55

/VPOFF

/POFF1,3

R123 24K

C97

100uF/50V

1

2

L2

IPEAK>2.2A VLED +5.8V

PQ1CG2032FZ

IC24

IC24:HEAT S INK

F6

T1.0A/250V

180uH Ch ock

2

4

1

ZD2

1SR159-200

VDRW VO

PTZ6.2A

AK

C99

/16V

1000uF

+

D14

RB060L40

AK

5

3

C102

220uF/50V

+

VLEDVCC

R137

R130

0

R129

R136

0

R138

9.1KF

3.9K

2.7K

VDRW

HEAT SINK

R139

R140

+

C104

IPEAK>2.2A VDRW:23.8V

84

56K

84

10KF

(1uF/50V)

VDRW

L3

220uH

2

PQ1CG2032FZ

4

1

IC26

/POFF 1,3

7

+

5

6

1

+

3

2

R141

10K

D15

5

3

C105

1000pF

-

IC25B

BA10393F

-

IC25A

BA10393F

R142

C107

1000uF/35V

+

R143

560

RB060L40

AK

C106

220uF/50V

+

6.2KF

REGURATOR

<- CLOSE TO

P-OFF

ZD3

UDZ5.1B

/VOFF

R144

L:OFF

H,OPEN:ON

C108

0.02uF(M)

51

R145

B

Q12

KRC106S

AK

ZD5

10K

Q11

KRA106S

EC

B

R146

33

/VON3

AK

EC

UDZ4.3B

ZD4

|LIN K

|CPU.SCH

3

NOT USE

UDZ5.1B

AK

0.1uF

C109

87654

87654

87654

87654

|FROM.SCH

|IO.S CH

|MT53DRV.SCH

|RS232. SCH

|PRINTIF. SCH

D

D

D

D

C

C

C

C

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 21 –

B

B

B

B

A A

A A

A A

A

12345678

12345678

12345678

12345678

6/7M-T53II Printer I/F

B

B

B

D

D

D

D

C

C

C

C

B

A

21

21

21

21

CN31

123456789

/B

VH VDD

B

/AVHN.C

1011121314151617181920212223242526

GND

VH

/STR1

GND

TH

/LAT

GNDAVDD

/STR2

GND

DI

CLK

VH

VH

N.C

N.C

VDD

LED(K)

PE

27

HUPS

TO PRINTER

JST 27FMN-B YK-A

3

3

3

3

CN1

D

D

D

D

13

14

15

16

17

18

19

20

21

22

23

24

25

26

C

C

C

C

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 22 –

12

1234567891011

TO MAIN PWB

JST 26FMN-BTK-A

87654

87654

87654

87654

B

B

B

B

A A

A A

A A

A

7/7RS232 DRIVER

12345678

12345678

12345678

12345678

B

B

B

B

123456789

CN11

CI2

SD2

DR2

CD2

RD2

ER2

CS2

RS2

RS232C CN(D-SUB 9Pin)

C

C

C

C

CI/+5V

D

D

D

D

123456789

CN10

CD1

RD1

SD1

ER1

RS1

CS1

A

RS232C CN(D-SUB 9Pin)

21

21

21

21

VCC

FB6

FB7

EFCB322513TS X 8

C113

10uF/50V

+

VCC

C111

0.1uF
C115

0.1uF

13

17

2312894272318

V-

V+

VCC10

1110

0.1uF

C1+

121415

C110

T1OUT

T2OUT

C1-

C2+

C2-

T1IN

T2IN

7

6

16

FB8

T3OUT

T3IN

20

T4OUT

T4IN

21

FB9

R150

R1IN

R1OUT

8

FB10

R151

R2IN

R2OUT

5

CI1 DR1

FB11

FB12

R152

R153

R3IN

R3OUT

262219

FB13

R154

R4IN

R4OUT

R5IN

R5OUT

100ohm*5

25

24

/SHDN

/EN

C120

C119

C118

C117

C116

IC27

VCC

HIN211

2

13

F7

1000pF

1000pF

1000pF

1000pF

1000pF* 5

1000pF

JUMPER WIRE (CI)

SP1

3

3

3

FB17

FB18

FB19

FB20

R163

5

R164

R2IN

R2OUT

262219

R165

R3IN

R3OUT

R166

R4IN

R4OUT

FB21

R5IN

R5OUT

100ohm*5

25

24

/SHDN

/EN

IC28

C131

C127 C128 C129 C1 30

1000pF* 5

HIN211

FB14

FB15

FB16

EFCB322513TS X 8

T500mA/250V

C124

10uF/50V

+

VCCVCCVCC

C122

0.1uF
C126

0.1uF

13

17

2312894272318

V-

VCC

V+

VCC10

1110

0.1uF

C1+

121415

C121

T1OUT

C1-

C2+

C2-

T1IN

7

16

T2OUT

T2IN

6

T3OUT

T3IN

20

T4OUT

T4IN

21

R162

R1IN

R1OUT

8

3

C114

C112

0.1uF

0.1uF

R149

VCC

10K

10K

R148

10K

R147

/RS11

/ER11

D

D

D

D

/CD11

TXD11

RXD11

B

Q13

KRC111S

EC

AK

D17

1SS355

/DR11

/S93

/CTS11

P911,3,4

C

C

C

C

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 23 –

C125

C123

0.1uF

0.1uF

R161

10K

R160

10K

R159

10K

R158

10K

R157

10K

R156

10K

R155

10K

87654

87654

87654

87654

/CI23

/DR23

/RS21

/ER21

B

B

B

B

/CD23

TXD21

RXD21

/CTS23

A A

A A

A A

A

PWB LAYOUT

MAIN PWB LAYOUT

A side

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 24 –

B side

XE-A302U CIRCUIT DIAGRAM AND PWB LAYOUT

– 25 –

q

COPYRIGHT

No part of this publication may be reproduced,

electronic, mechanical, photocopying, recording, or otherwise,

without prior written permission of the publisher.

 2003 BY SHARP CORPORATION

All rights reserved.

Printed in Japan.

stored in a retrieval system, or transmitted.

In any form or by any means,

SHARP CORPORATION
Digital Document Systems Group
Products Quality Assurance Department
Yamatokoriyama, Nara 639-1186, Japan

2003 August Printed in Japan t