Digi SM-720 User manual

COPYRIGHT © 2006 TERAOKA WEIGH-SYSTEM PTE LTD
SERVICE MANUAL
DIGITAL COMPUTING PRINTING SCALE
SM-720
Edition 5

Table of Content
i) Notice............................................................................................................................................................1
ii) Safety Information ........................................................................................................................................4
iii) Safety Regulations .......................................................................................................................................5
1. GENERAL .......................................................................................................................................................6
1.1 Model Specification ...................................................................................................................................6
1.2 Operating Specification..............................................................................................................................7
1.3 Type of Interface ........................................................................................................................................7
1.4 Main Components ......................................................................................................................................7
2. OVERVIEW .....................................................................................................................................................9
2.1 Dimension (in mm) .......................................................................................................................................9
2.1.1 SM-720 DP ........................................................................................................................................9
2.1.2 SM-720 EB ........................................................................................................................................9
2.1.3 SM-720 EV ......................................................................................................................................10
2.1.4 SM-720 TDP....................................................................................................................................10
2.1.5 SM-720 TEB ....................................................................................................................................11
2.1.6 SM-720 TEV ....................................................................................................................................11
2.1.7 SM-720 H ........................................................................................................................................12
2.1.7 SM-720 BS ......................................................................................................................................12
2.2 Key sheet Layout .......................................................................................................................................13
2.3 Panel Layout ..............................................................................................................................................16
3. SPAN SWITCH..............................................................................................................................................18
3.1 Span Switch Jumper Setting Changing Procedure...................................................................................18
3.2 Span Switch located in Main Board ..........................................................................................................18
4. INITIAL SETUP .............................................................................................................................................19
4.1 Pole, Bench and Elevated Type................................................................................................................19
4.1.1 Scale Assembly ...............................................................................................................................19
4.1.1.1 Display Pole Kit Mounting.....................................................................................................19
4.1.1.2 Level Adjustment ..................................................................................................................19
4.1.2 Default Country Spec Setting ..........................................................................................................19
4.1.3 Calibration .......................................................................................................................................23
4.1.4 User Spec Setup Procedure............................................................................................................24
4.1.5 Weigh & Measurement Spec Setup Procedure ..............................................................................26
4.2 Touch Pole, Touch Bench and Touch Elevated Type...............................................................................28
4.2.1 Default Country Spec Setting ..........................................................................................................28
4.2.2 Calibration .......................................................................................................................................29
4.2.3 User Spec Setup Procedure............................................................................................................30
4.2.4 IP Address Setting...........................................................................................................................30
5. HARDWARE TESTING & MAINTENANCE .................................................................................................32
5.1 For Pole, Bench and Elevated Type .........................................................................................................32
5.1.1 Hardware Testing ............................................................................................................................32
5.1.1.1 RAM Read and Write Test....................................................................................................32
5.1.1.2 SIO Loop Back Test .............................................................................................................33
5.1.1.3 ROM Checksum Test ...........................................................................................................33
5.1.1.4 PLU Generator Test .............................................................................................................33
5.1.1.5 Internal Count .......................................................................................................................34
5.1.1.6 Span Switch Status ..............................................................................................................35
5.1.2 Adjustment.......................................................................................................................................35
5.1.2.1 Location of Gap Sensor And Peel Sensor............................................................................35

2
5.1.2.2 Label Gap Sensor.................................................................................................................35
5.1.2.3 Peel Sensor ..........................................................................................................................36
5.1.2.4 Printing Position....................................................................................................................37
5.2 For Touch Pole, Touch Bench and Touch Elevated Type ........................................................................38
5.2.1 Hardware Testing ............................................................................................................................38
5.2.1.1 Memory (RAM) Test .............................................................................................................38
5.2.1.2 SIO Loop Back Test .............................................................................................................39
5.2.1.3 RS485 Loop Back Test.........................................................................................................40
5.2.1.4 Internal Count .......................................................................................................................41
5.2.2 Adjustment.......................................................................................................................................42
5.2.2.1 Peel Sensor setting ..............................................................................................................42
5.2.2.2 Gap Sensor setting...............................................................................................................43
5.2.2.3 Label Printing Layout Setting................................................................................................44
5.2.2.4 Date And Time Setting .........................................................................................................45
6. MAINTENANCE ............................................................................................................................................46
6.1 Thermal Head Cleaning ............................................................................................................................46
6.2 Basic Maintenance....................................................................................................................................47
6.3 Thermal Head cleaning and replacement .................................................................................................48
6.4 Mainboard Jumper Setting for Different Display Type ..............................................................................49
6.5 Shift between New and Old Type Customer Display LCD to Activated....................................................49
6.6 Procedure of Linerless Machine Conversion ............................................................................................50
6.7 Method of Assembly Sealing Screw & Sticker ..........................................................................................52
6.7.1 For All Machine except Console Type.............................................................................................52
6.7.2 For Hanging Type ...........................................................................................................................53
6.7.3 For Console Type............................................................................................................................54
7. EXPLODED VIEW ..........................................................................................................................................55
7.1 Pole Type ..................................................................................................................................................55
7.2 Bench Type ...............................................................................................................................................56
7.3 Hanging Type ............................................................................................................................................57
8. DISASSEMBLY ..............................................................................................................................................58
8.1 Pole Type Disassembly.............................................................................................................................58
8.2 Pole and Bench AD Board Disassembly...................................................................................................61
8.3 Pole and Bench Load-cell Disassembly....................................................................................................62
8.4 Pole Display Disassembly.........................................................................................................................63
8.5 Bench Display Disassembly......................................................................................................................63
8.6 Extra Bracket Disassembly for 30Kg.........................................................................................................64
8.7 Hanging Type Disassembly ......................................................................................................................65
8.8 Hanging Type Keyboard Disassembly......................................................................................................71
8.9 Hanging Type Front & Rear Display Disassembly....................................................................................71
9. FIRMWARE UPGRADE .................................................................................................................................72
9.1 Bootloader Downloading ...........................................................................................................................72
9.2 Firmware Downloading..............................................................................................................................75
10. WIRELESS LAN KIT INSTALLATION AND WLAN CONFIGURATION ....................................................79
10.1 SM-720 Standard Machine .....................................................................................................................79
10.1.1 Internal Wireless Kit Installation ....................................................................................................79
10.1.2 External Wireless Kit Installation ...................................................................................................81

3
10.1.3 WLAN Bridge Configuration Setup................................................................................................82
10.2 SM-720 Touch Screen Machine..............................................................................................................83
10.2.1 Wireless LAN Kit Installation .........................................................................................................83
10.2.2 RF Bridge Configuration Setup .....................................................................................................84
10.3 SM-720 Hanging Scale ...........................................................................................................................86
10.3.1 SM-720 Hanging WLAN Installation Sheet ...................................................................................86
10.3.2 Hanging Scale WLAN Bridge Configuration..................................................................................89
11. MISCELLANEOUS........................................................................................................................................90
11.1 Error Messages .......................................................................................................................................90
11.2 Corresponding Key Of PS2 Keyboard ...................................................................................................93
11.3 ASCII Characters ....................................................................................................................................94
11.4 TERAOKA Code......................................................................................................................................95
11.5 Wire And Connector................................................................................................................................95
11.5.1 Straight & Crossover Ethernet Cable ............................................................................................96
11.5.2 Cash Drawer Option (RJ11) ..........................................................................................................97
11.5.3 PS2 Keyboard Option....................................................................................................................98
11.5.4 RS232C and Multi-Drop (4 Line, RS485) Wire .............................................................................99
12. TREATMENT AND RECOVERY OF WEEE..............................................................................................104
12.1 Component listing of Hazardous Material .............................................................................................104
12.2 Location of Battery in Main-board .........................................................................................................108
13. BLOCK DIAGRAM.....................................................................................................................................109
13.1 SM-720EB (SM500 LCD Option) ..........................................................................................................109
13.2 SM-720DP (SM800 LCD Option) ..........................................................................................................110
13.3 SM-720DP (SM500 LCD Option) ..........................................................................................................111
13.4 SM-720EV (SM800 LCD Option) ..........................................................................................................112
13.5 SM-720EV (SM500 LCD Option) ..........................................................................................................113
13.6 SM-720TEB (SM500 LCD Option) ........................................................................................................114
13.7 SM-720TEB (SM800 LCD Option) ........................................................................................................115
13.8 SM-720TEV (SM800 LCD Option) ........................................................................................................116
13.9 SM-720TEV (SM500 LCD Option) ........................................................................................................117
13.10 SM-720TP (SM500 LCD Option) ........................................................................................................118
13.11 SM-720TP (SM800 LCD Option) ........................................................................................................119
13.12 SM-720BS (SM800 LCD Option) ........................................................................................................120
14. SPECIFICATION LIST ...............................................................................................................................121
14.1 User Specification [REZERO] + [1][4][1]................................................................................................121
14.2 Weigh & Measure Specification [REZERO] + [1][4][2]...........................................................................146
14.3 Weigh & Measure Specification [REZERO]+[1][4][1] (For SM90TS, SM500TS & SM-720TS).............154
15. REVISION RECORDS...............................................................................................................................155

i) Notice
DIGI®
The material contained in this document is proprietary and for information only and is subject to change without
notice. Teraoka Weigh-System assumes no responsibility for any errors or damages arising from
misinterpretation of any procedure.
Screen displays, operating procedures and supporting features might vary with different software version
releases.
This document shall not be reproduced whether in part or whole without the written consent from Teraoka
Weigh-System Pte Ltd.
Teraoka Weigh-System Pte Ltd
4, Leng Kee Road
#06-01 SIS Building
Singapore 159088

ii) Safety Information
The operator of the equipment shall comply with the safety and warning indications and procedures outlined in
this document. Teraoka Weigh-System Pte Ltd assumes no responsibility or liability for failure to comply with
these requirements.
• To avoid electric shock, use only the supplied power cords and ensure product is connected to a
properly grounded supply.
• Ensure product is placed on a firm and level surface before operation.
• Avoid overloading the product beyond its rated maximum capacity.
• Care shall be taken during the following operations
o Receipt paper tearing – to prevent injuries from cutting from paper cutter
o Changing of labels and receipt paper - to prevent injuries from cutting from paper cutter and
movable printer mechanism.
• Repair and servicing of product, shall only be carried out by trained and qualified personnel.
Disclaimer:
Specifications are subject to change without notice. All dimensions shown are approximate. Please be aware
that Teraoka has indicated that its hardware and software used in the product may require additional updates in
the future as our product is continually under development. The need for such updates most likely applies to the
Printer software.
CAUTIONS:
FOR PLUGGABLE EQUIPMENT, THAT THE SOCKET-OUTLET SHALL BE INSTALLED NEAR THE
EQUIPMENT AND SHALL BE EASILY ACCESSIBLE.
POUR LE MATÉRIEL RACCORDÉ PAR PRISE DE COURANT, LE SOCLE DE PRISE DE
COURANT DOIT ÊTRE
INSALLÉ À PROXIMITÉ DU MATÉRIEL ET DOIT ÊTRE AISÉMENT ACCESSIBLE.
FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE
AND RATING OF FUSE.
POUR NE PAS COMPROMETTRE LA PROTECTION CONTRE LES RISQUES D’INCENDIE,
REMPLACER PAR UN FUSIBLE DE MÊME TYPE ET DE MÊME CARACTÉRISTIQUES
NOMINALES.
DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED. REPLACE ONLY WITH
THE SAME OR EQUIVALENT TYPE RECOMMENDED BY THE MANUFACTURER. DISCARD
USED BATTERIES ACCORDING TO THE MANUFACTURER’S INSTRUCTIONS
IL Y A DANGER D’EXPLOSION S’IL Y A REMPLACEMENT INCORRECT DE LA BATTERIE.
REMPLACER UNIQUEMENT AVEC UNE BATTERIE DU MÊME TYPE OU D’UN TYPE
RECOMMANDÉ PAR LE CONSTRUCTEUR. METTRE AU RÉBUT LES BATTERIES USAGÉES
CONFORMÉMENT AUX INSTRUCTIONS DU FABRICANT.
WARNING DISPOSAL:
THE BATTERY MAY BE REGULATED BY NATIONAL OR LOCAL REGULATION. PLEASE FOLLOW
THE INSTRUCTIONS OF PROPER REGULATION. AS ELECTRIC CAPACITY IS LEFT IN A
DISCARDED BATTERY AND IT COMES INTO CONTACT WITH OTHER METALS, IT COULD LEAD TO
DISTORTION, LEAKAGE, OVERHEATING, OR EXPLOSION, SO MAKE SURE TO CUT/BREAK THE
BATTERY LEGS AND COVER THE (+) AND (-) TERMINALS WITH FRICTION TAPE OR SOME OTHER
INSULATOR BEFORE DISPOSAL.
+
-
Tape
Battery
Cut / Break the Battery
Legs

5
iii) Safety Regulations
Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one of the
following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
IMPORTANT NOTE:
FCC Radiation Exposure Statement:
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. To
maintain compliance with FCC RF exposure compliance requirements, please avoid direct contact to the
transmitting antenna during transmitting.

SM720 Service Manual Edition 5
6
1. GENERAL
1.1 Model Specification
Model : SM-720
Description: Type: Dimension:
Variation : Dual Pole - SM-720 DP 497(L) x 404(W) x 589(H)
Economic
Bench
- SM-720 EB 430(L) x 404(W) x 177(H)
Elevated - SM-720 EV 404(L) x 397(W) x 658(H)
Touch
Elevated
- SM-720 TEV 404(L) x 397(W) x 658(H)
Touch Screen
Bench
- SM-720 TEB 430(L) x 404(W) x 177(H)
Touch Screen
Pole
- SM-720 TDP 497(L) x 404(W) x 589(H)
Hanging Scale - SM-720 H 460(L) x 230(W) x 855(H)
Self Service - SM-720 BS 497(L) x 482(W) x 779(H)
Display : 3 Color LCD with Backlight - 64 x 264 dots (DP, EV, H & BS Type)
- 24 x 264 dots (B Type)
Display Angle : 50 and 80 degree
Key : Mechanical Switch
Color : Blue / Grey / Metalic Silver
Number Of Preset Key : SM-720EB - 32
SM-720DP - 56 / 100
SM-720EV - 56 / 100
SM-720H - 56
SM-720BS - 48 / 60 / 96 / 120
Capacity : 6kg (less than 3kg, e = 1g / more than 3kg, e = 2g)
15kg (less than 6kg, e= 2g / more than 6kg, e = 5g)
30kg (less than 15kg, e = 5g / more than 15kg, e = 10g)
30 Lb
Printer Type : Cassette Type
A) Paper : Label & Receipt
: For Label - 40mm to 80mm
: For Label - 40mm to 80mm
B) Paper Width
: For Receipt - 72mm/80mm
C) Resolution : 8 dots / mm

SM720 Service Manual Edition 5
7
: For Label - Up to 150 mm / sec
D) Speed
: For Receipt - Up to 150 mm / sec
Note: For Best Speed and Printing Resolution, use Ricoh paper,
150LAB
Memory Capacity : 2MB (Standard), 10MB (Max.)
Memory Extension
Board
: 8MB (Optional)
1.2 Operating Specification
Power Source : AC Supply 100V / 110V (Manual Set by Jumper Setting)
AC Supply 220V / 230V (Manual Set by Jumper Setting)
Frequency : 50 - 60 Hz
Operating Temperature : -10 °C to 40 °C
Humidity : 15 % to 85 % RH
Waterproof : N.A.
(Please do not splash water on top or around the scale. Clean scale
only with a damp cloth)
1.3 Type of Interface
Standard : RS 232C (FL-1, PC connection)
:
PS2 Keyboard
:
Cash drawer (3 Pin Din for TWB-01750)
: Cash drawer (RJ11 type connector for TWB-01750-1 onwards)
RS 485 (PC connection)Optional
:
Ethernet (Client / Server, TCP / IP protocol)
: Character Generator
* Interface with PC can either use RS 232C, RS 485 or Ethernet.
1.4 Main Components
1 XYLINX-XC95144XL-
10TQG144C.
(M/B-U1)
It’s a 3.3V CPLD targeted for high-performance, low-voltage application in leading-
edge communications and computing system.
2 Motor Driver L6258EX.
(M/B-U5)
It’s a dual full bridge for motor control application realized in BCD technology, with
the capability of driver both winding of a bipolar stepper motor or bi
-
directional

SM720 Service Manual Edition 5
8
control two DC motor.
3 RS232 Drv AX3232.
(M/B-U18)
It’s a device consists of two line driver, two receiver, and a dual change-pump circuit
with +-15kv ESD protection pin to pin.
4 Controller H8/3024F.
(CPU BD-U1)
It’s a high-performance single-chip microcomputer that integrates peripheral
functions necessary y for system configuration with an H8/300H CPU feature a 32-
bits internal architecture as its core.
5 SRAM
IS62WV51216BLL.
(CPU BD-U7 & U8)
It’s a high-performance, very low power CMOS static Random Access Memory
organized as 524,288 words by 16 bits and operates from a wide range of 2.4V to
5.5V supply voltage.
6 AM29LV320DB90EI.
(CPU BD-U9)
It’s a 32 megabit, 3.0 volt-only flash memory device, and is designed to be
programmed in-system with the standard 3.0 volt Vcc supply, and can also be
programmed in standard EPROM programmers.
7 LAN9115-MT.
(CPU BD-U10)
Is a full-featured, single chip 10/100 Ethernet controller designed for Embedded
applications where performance, flexibility, ease of integration and system cost
control are required
*Components are subject to change without notice.

SM720 Service Manual Edition 5
9
2. OVERVIEW
2.1 Dimension (in mm)
2.1.1 SM-720 DP
2.1.2 SM-720 EB

SM720 Service Manual Edition 5
10
2.1.3 SM-720 EV
2.1.4 SM-720 TDP

SM720 Service Manual Edition 5
11
2.1.5 SM-720 TEB
2.1.6 SM-720 TEV

SM720 Service Manual Edition 5
12
2.1.7 SM-720 H
Note: This dimension is using 72mm Printer.
2.1.7 SM-720 BS

SM720 Service Manual Edition 5
13
2.2 Key sheet Layout
32 Preset Keys
56 Preset Keys
100 Preset Keys

SM720 Service Manual Edition 5
14
ON / OFF KEY
or
* Turn display ON or OFF.
NUMERIC KEYS
To
* Enter numeric data.
TARE KEY
* Set or Clear Tare Value.
* Select " NO " in S and Z Mode.
* Item Test print in S Mode.
CLEAR KEY
* Clear numeric values.
* Select " YES " in S and Z Mode.
RE-ZERO KEY
* Reset weight to zero.
PRE-PACK KEY
* Switch Manual mode and Pre-pack mode alternatively.
(The mode status will be indicated in the P and M indicator.)
▪P - PRE-PACK MODE ▪M - MANUAL MODE
Symbol Key Panel Standard Key Panel

SM720 Service Manual Edition 5
15
CHANGE KEY
* Calculate the Changed Amount.
* Escape the Programming screen without saving data in S mode.
MULTIPLE KEY
* Register the number of Non-Weight products.
* Select programming item such as PLU data, Shop Name in S
mode.
* Select Report Type in X mode.
* Select Data Transaction Type in Z mode.
CLERK KEYS
* Accumulate the Total Price.
VOID KEY
* Correct the Sales Data
PLU KEY
or
* Call up PLU data.
* Store the programmed data in S mode.
FEED KEY
or
* Feed Label or Receipt
PRINT KEY
or
* Print out Label or Receipt
MODE SELECT KEY
* Five Modes can be selected using this key.
Indicator R - REGISTRATION MODE (All the sales transactions are
performed.)
Indicator X - CHECK MODE (Printing out and sales report.)
Indicator S - PROGRAM MODE (Programming preset data, such as
products, data, shop name, etc.)
Indicator Z - TOTAL MODE (Clear sales data stored.)
Indicator X (Blink) - PASWORD SETTING MODE (Setting ENTRY
PASSWORD for S, X and Z modes.)

SM720 Service Manual Edition 5
16
PRESET KEYS
to
* Call up Preset data such as PLU Data or Function Data in Reg.
Mode.
* Enter Alphabetic data in Program Mode.
Note: The following Preset Keys are used in entering Alphabetic (Pole Type).
Move the
cursor. Change
the entry to
Right.
Move the
cursor.
Change the
entry to Left.
Code type
entered.
Insert Data. Switch Cap /
Lower case.
Change Font
size.
Delete the
Data.
2.3 Panel Layout
Economic Bench and Pole Type (For Small LCD)
Dual Pole Type (For Large LCD)
There are fifteen different indicators on Display Panel as shown below.
1. Î0Í: Lights when scale is stable at the zero point
2. NET : Lights when tare subtraction in performed.
3. P: Lights when PRE-PACK Mode is selected.
4. MAN : Lights when MANUAL Mode is selected.
5. AM : Lights when the amount is displayed.

SM720 Service Manual Edition 5
17
6. CH : Lights when the amount of change is being displayed.
7. PE : Lights when label or receipt paper ends.
8. R: Lights when REGISTRATION Mode is selected.
9. X: Lights when CHECK Mode is selected.
10. S: Light when PROGRAM Mode is selected.
11. Z: Lights when TOTAL Mode is selected.
12. A: Lights when Sales Data is in Memory for CLERK 9995.
13. B: Lights when Sales Data is in Memory for CLERK 9996.
14. C: Lights when Sales Data is in Memory for CLERK 9997.
15. D: Lights when Sales Data is in Memory for CLERK 9998.

SM720 Service Manual Edition 5
18
3. SPAN SWITCH
3.1 Span Switch Jumper Setting Changing Procedure
1. Bottom View of Machine. 2. Loosen the 4pcs SEMS B
screw M4X6, then open the
Bottom Cover.
3. Loosen the 2pcs Truss Head
screw M4X6, and disconnect
the Interface Board cable.
4. Loosen the 2pcs SEMS B
screw M3X6, then open the
Insulator.
5. Change [SW2] jumper to
Enable/Disable Span Switch.
3.2 Span Switch located in Main Board
Bottom
Cover
Interface
Board
Cable
Span Switch
(
SW2
)
Mainboard
Insulator
Insulator