ISHIDA BC-300 User manual

SERVICE MANUAL
Manual No. 0141A ISHIDA CO., LTD.
Retail Scale
BC-3000
48775

BC-3000 •Service Manual •Rev. 1 Contents - i
Contents
HARDWARE SECTION
1. INTRODUCTION ................................................................................................. 1-1
1.1 Main Components .................................................................................................. 1-1
1.2 Characteristics........................................................................................................ 1-2
2. SET UP................................................................................................................ 2-1
2.1 Parts Check ............................................................................................................ 2-1
2.2 Installation Site Check ............................................................................................ 2-1
2.3 Assembly ................................................................................................................ 2-1
2.4 Set Up Sequence ................................................................................................... 2-2
3. PARTS DISASSEMBLY & REPLACEMENT ...................................................... 3-1
3.1 Disassembly View and Part Names ....................................................................... 3-1
3.2 Upper Cover Removal ............................................................................................ 3-3
3.3 Circuit Board Replacement..................................................................................... 3-6
3.4 Display Unit Replacement ...................................................................................... 3-7
3.5 Load Cell Replacement .......................................................................................... 3-8
4. ELECTRONIC CONFIGURATIONS.................................................................... 4-1
4.1 Connector Configuration......................................................................................... 4-1
4.2 Power Unit .............................................................................................................. 4-2
4.3 Main Board (P-864) ................................................................................................ 4-3
4.4 A/D Board (P-830) .................................................................................................. 4-5
4.5 Keyboard ................................................................................................................ 4-5
4.6 Display Unit (P-856) ............................................................................................... 4-6
4.7 DC/DC Converter ................................................................................................... 4-7
4.8 Connector Bracket.................................................................................................. 4-7
4.9 Label Sensor .......................................................................................................... 4-8
5. THERMAL HEAD ................................................................................................ 5-1
5.1 Overview................................................................................................................. 5-1
5.2 Specifications ......................................................................................................... 5-1
5.3 Thermal Head Adjustment ...................................................................................... 5-2
5.4 Thermal Head Cleaning.......................................................................................... 5-3
5.5 Other Adjustments (Label sensor) .......................................................................... 5-3
6. TROUBLESHOOTING ........................................................................................ 6-1
6.1 Periodic Parts Replacement (MTBF*) .................................................................... 6-1
6.2 Malfunction Troubleshooting Chart......................................................................... 6-2
6.3 Error Messages ...................................................................................................... 6-3

Contents - ii BC-3000 •Service Manual •Rev. 1
SOFTWARE SECTION
S1. OUTLINE OF SOFTWARE................................................................................S1-1
S1.1 Memory Map.........................................................................................................S1-1
S2. PRINT FORMAT MODIFICATION.....................................................................S2-1
S2.1 Print Format Overview..........................................................................................S2-1
S2.2 Label Format Modification Range.........................................................................S2-1
S2.3 Format Modification Method .................................................................................S2-1
S3. DISPLAY MODULE ........................................................................................... S3-1
S3.1 Display Module Overview .....................................................................................S3-1
S3.2 Root and SUB Menu Selection.............................................................................S3-1
S4. SETTING MODE ............................................................................................... S4-1
S4.1 Menu Schematic...................................................................................................S4-1
S4.2 Setting Procedures ...............................................................................................S4-3
1. Label Format (b01) ........................................................................................S4-3
2. Bar Code (b02) ..............................................................................................S4-4
3. Code (b03).....................................................................................................S4-4
4. Initial Data Setting (b04) ................................................................................S4-5
5. PLU File (b08) ...............................................................................................S4-6
6. Registration Select (b11) ...............................................................................S4-7
7. Total Mode Select (b12).................................................................................S4-8
8. Password (b13) .............................................................................................S4-8
9. Default PLU (b14)..........................................................................................S4-8
S5. TEST MODE...................................................................................................... S5-1
S5.1 Menu Schematic...................................................................................................S5-1
S5.2 Test Mode Procedures..........................................................................................S5-2
1. Hardware Test (C01) (Calibration) .................................................................S5-2
2. RAM Clear (C02) ...........................................................................................S5-6
3. Thermal Head (C03)......................................................................................S5-7
4. Sensor Check (C04) ......................................................................................S5-8
5. Memory Check (C05) ....................................................................................S5-9
6. ROM Switch Number Select (C06)................................................................S5-9
7. Label Format (C07) .....................................................................................S5-10
8. Sales Mode (C08)........................................................................................S5-11
10. Preset Function Key (C10) ..........................................................................S5-12
99. Data Send/Load (C99).................................................................................S5-13
S6. IF-21FD ERRORS ............................................................................................. S6-1
A1. DC/DC Converter Schematic Diagram............................................... Appendix-1
A2. P-864A Circuit Diagram....................................................................... Appendix-3
A3. BC to BC System Setup ......................................................................Appendix-5
A4. Korean Language Firmware ............................................................... Appendix-7
A5. Chinese/Japanese Language Firmware ............................................ Appendix-9
A6. Label Format Worksheets................................................................. Appendix-11
A7. Dual Weight Range Notice ................................................................Appendix-19

HARDWARE SECTION

BC-3000 •Service Manual • Rev. 1 1 - 1
Chapter 1. Introduction
1INTRODUCTION
1.1 MAIN COMPONENTS

1 - 2 BC-3000 •Service Manual • Rev. 1
Chapter 1. Introduction
1.2 CHARACTERISTICS
■16-Bit microprocessor
The BC-3000 scale is equipped with a 16-bit microprocessor unit (V-40) which enables processing of large
quantities of data.
■E2ROM
The use of E2ROM ensures that important data is not lost.
■Resistance value and printing density settable via key entry
The thermal head resistance value as well as printing density can be set by key entry.
■Settable sales mode
For supermarket specifications, there are operator and non-operator selections.
Differences from the AC-2000
•Data transmission to the IF-21FD is via I2NET (9P) instead of RS-232C used by the AC-2000.
•An inspection mode has been added. Verification can be made during totaling.
Mode Key Function
Enter the pass code (4 digits), then press MODE to change modes. If MODE is pressed without
entering a pass code, then normal operation mode is returned.
Pass Code Mode
9000 Registration
8000 Totals
7000 Subtraction
6000* Setting
5000* Checking
*Fixed

BC-3000 •Service Manual •Rev. 1 2 - 1
Chapter 2. Set Up
2SET UP
2.1 PARTS CHECK
Open the shipping carton and confirm the following:
•No parts are missing.
•No parts are damaged.
2.2 INSTALLATION SITE CHECK
Check that the installation site conforms to the following conditions:
•Site is stable and level.
•Scale will not be exposed to water or other liquids.
•Scale will not be exposed to direct sunlight for long periods.
•Scale will not be exposed to wind or strong vibration.
•Installation site should be sufficiently spacious.
•Dedicated, grounded circuit is available.
2.3 ASSEMBLY
Assemble the display components as follows:
1. Thread the display connector cable through the display pole.
2. Attach display pole to the plastic display housing with 2 screws (M4).
3. Connect cables.
4. Attach the display to the main body with 2 screws (M4).
5. Cover the screws with the plastic screw caps.

2 - 2 BC-3000 •Service Manual •Rev. 1
Chapter 2. Set Up
2.4 SET UP SEQUENCE
1. Perform RAM clear sequence.
Insert the power plug into an outlet. Referring to Chapter S5 (Test Mode 2: RAM Clear), initialize all the
RAM data.
2. Set print format, label length and sales mode according to user's specifications.
Service manual reference sections:
•Print format setting : Chapter S5 (Test Mode7: Label Format)
•Label length setting : Chapter S4 (Setting Mode 1: Label Format)
•Sales mode setting : Chapter S5 (Test Mode 8: Sales Mode)
3. Register date and time.
Referring to the programming manual, enter the date and time.
4. Register PLU.
Referring to the programming manual, enter PLU data registration in Registration mode.
5. Perform print test.
Load a roll of labels or receipts, and confirm that printing is correct. Refer to Chapter S5 (Test Mode 3:
Thermal Head).
6. Perform totals clear.
Refer to the operation manual.
7. Back up data.
Back up the registration data on a floppy disk. Refer to Chapter S5 (Test Mode 99: Data Transmission.)

BC-3000 •Service Manual •Rev. 1 3 - 1
Chapter 3. Parts Disassembly & Replacement
3PARTS DISASSEMBLY & REPLACEMENT
This chapter explains the procedures for disassembling and replacing the main components. Please be
careful not to drop or strongly impact fragile parts such as the display unit and circuit boards. Also, before
disassembly, be sure to turn off the power switch and unplug the power cord.
3.1 DISASSEMBLY VIEW AND PART NAMES

3 - 2 BC-3000 •Service Manual •Rev. 1
Chapter 3. Parts Disassembly & Replacement
Part Name Key
.oNtraPemaNtraP
*1UPC:468-P:BWP
2D/A:038-P:BWP
3yalpsiD:568-P:BWP
*4gnihctiwS:ylppuSrewoP
5daehlamrehT
6daehlamrehT:2S:ssenraH
7draobyeK:lenaP
8SA:rosneSlebaL
9elacS:3C:ssenraH
01rewoP:3C:ssenraH
11SA:esuF
21waseeS:hctiwS
*31drocrewoP:3C:ssenraH
41CD/CD:ylppuSrewoP
51I:3C:ssenraH
2
TEN
611yalpsiD:2C:ssenraH
711CD/CD:2S:ssenraH
81)Lx421(LX:tleBgnimiT
*91ebutssalG:esuF
02gnippetS:SA:rotoM
12rewoP:3S:ssenraH
Note: Only the main parts are listed here. For a complete listing of parts and their corresponding parts
numbers, refer to the BC-3000 parts list.
*These parts vary with country. (Only the software of PWB: P-864 varies; the board itself is
common to all countries.)