ISHIDA IPC 3kg User manual

IPC Series
Service Manual
The First Edition
Read this manual thoroughly and do not perform installation, operation, maintenance, or
inspection unless you fully understand all of the contents.
Keep this manual in a safe place where you can refer to it easily while installing, operating, and
carrying out maintenance or inspections.
This manual is for use by service personnel of our company or qualified to perform maintenance
services for this machine. Use by anyone except the above personnel is not permitted.
Manual No. 0183B

Manual No. 0183B 1/29 IPC Series Service Manual
OUTLINE
•Purpose of this manual
This manual is edited for the authorized servicing personnel and used when carrying out services and
maintenance of the machine.
•Relative manual
Refer to the operation manual for ususal operations.
•Symbols used in this manual
1. Warning symbols
Symbol Meaning
Indicates information that, if not avoided, is likely to result in loss of life or serious
injury.
Indicates information that, if not avoided, may result in loss of life or serious injury.
Indicates information that, if not avoided, could result in relatively serious or minor
injury, damage to the machine or faulty operation.
2. Explanatory symbols
Symbol Meaning
Indicates information to call or emphasize for attention to the note.
Indicates the reference page.
Indicates information to help understanding.
•Readers of this manual
This manual is edited for the servicing personnel. Use by other personnel is not permitted.
•Note
This manual may be revised in accordance with modification when made in the machine.
All rights are reserved. Copying any part of this manual is prohibited without our permission.

Manual No. 0183B 2/29 IPC Series Service Manual
Contents
Chapter 1. Product Overview.........................................................................................3
1.1 Product Overview..............................................................................................................3
1.2 Standard Specifications ....................................................................................................3
1.3 Appearance.......................................................................................................................4
1.4 Operation Panel ................................................................................................................5
1.5 Outer Dimensions .............................................................................................................6
Chapter 2 Test Mode......................................................................................................7
2.1 Operation ..........................................................................................................................7
2.1.1 Test Mode Flow ...................................................................................................................7
2.1.2 Key Functions (when setting value).....................................................................................8
2.1.3 Starting Test Mode...............................................................................................................8
2.1.4 Ending Test Mode................................................................................................................8
2.1.5 Memory Switch ....................................................................................................................8
2.1.6 C1 Mode – Country No. Setting...........................................................................................9
2.1.7 C2 Mode – Scale No. and Decimal point Setting ..............................................................10
2.1.8 C3 Mode – Span Adjustment.............................................................................................11
2.1.9 F Mode – Setting measuring conditions and E2ROM clear...............................................12
2.1.10 Error No. List......................................................................................................................13
Chapter 3 Hardware Configuration.............................................................................14
3.1 Mechanisms....................................................................................................................14
3.1.1 Small Size (3kg, 6kg).........................................................................................................14
3.1.2 Large Size (15kg、30kg) ...................................................................................................16
3.2 Electric Concerns ............................................................................................................18
3.2.1 Block Diagram....................................................................................................................18
3.2.2 Board PS-005 ....................................................................................................................18
Chapter 4 Maintenance................................................................................................20
4.1 Disassembly Procedure (Small Size: 3kg •6kg).............................................................20
4.1.1 Base Replacement.............................................................................................................20
4.1.2 Board Replacement ...........................................................................................................21
4.1.3 Load Cell Replacement .....................................................................................................22
4.2 Assembly Procedure (Large Size: 15kg •30kg) .............................................................24
4.2.1 Base Replacement.............................................................................................................24
4.2.2 Board Replacement ...........................................................................................................25
4.2.3 Load Cell Replacement .....................................................................................................26
4.3 Troubleshooting ..............................................................................................................28

Manual No. 0183B 3/29 IPC Series Service Manual
Chapter 1. Product Overview
1.1 Product Overview
•The IPC Series is a digital scale which can be operated with two batteries.
•The large LCD with 25mm height is provided for the display.
1.2 Standard Specifications
Item Description
Small size Large size
Type name IPC 3kg IPC 6kg IPC 15kg IPC 30kg
3kg/
1g(0~1.5kg)
2g(1.5kg~3kg)
6kg/
2g(0~3kg)
5g(3~6kg)
15kg/
5g(0~7.5kg)
10g(7.5~15kg)
30kg/
10g(0~15kg)
20g(15~30kg)
Weighing capacity
Dual range Dual range Dual range Dual range
0.001kg 0.002kg 0.005kg 0.01kg
Scale unit 3.000kg/0.001kg 6.000kg/0.002kg 15.000kg/0.005kg 30.00kg/0.01kg
Accuracy 1/3000
Weigh platter size 200mm(L)×230mm(W) 293mm(L)×280mm(W)
Display LCD type 6 digits (7segments) Height : 25mm
Environment condition Ambient temperature: -5ºC to +40ºC
Relative humidity: 80%RH (Max.), no condensation
Power source
Two D-sized dry batteries or AC adaptor
[ Battery duration ]
Two alkaline D-sized batteries (Approximately 500 hours)
Current consumption Max. 25mA
Auto power off Select: 60 minutes (default), 20 minutes or non Auto power off
Weight (excl. battery) 2.0kg 3.2kg
Option AC adaptor (Dealer Option)
・Output voltage
- 3.2 to 6.0VDC (current load at 25mA, or at IPC connection)
(caution)
1. Output voltage must not exceed 6.0V even if power supply voltage is at +10%.
2. Output voltage exceeds 3.2V even if power supply voltage is at -15%.
- Generally, AC adaptor output voltage varies with load current.
Confirm output voltage with a 25mA load current (IPC current)
- Output plug configuration/polarity
- Configuration Specification EIAJ RC-5320-2
- Polarity Center Plus

Manual No. 0183B 4/29 IPC Series Service Manual
1.3 Appearance
F
ront view
Rear view
Bottom view

Manual No. 0183B 5/29 IPC Series Service Manual
1.4 Operation Panel

Manual No. 0183B 6/29 IPC Series Service Manual
1.5 Outer Dimensions
Small size
Large size

Manual No. 0183B 7/29 IPC Series Service Manual
Chapter 2 Test Mode
The Test Mode is used for diagnosis and/or setting at maintenance service.
2.1 Operation
2.1.1 Test Mode Flow
TARE
TARE
Setup of Scale No.
And Decimal point
Span adjustment
Setting measuring CONDITIONS
E2ROM clear
*
ON/OFF
C2 XX
C3
F x x x
END
Program No. display
Setup of Country No.
START L003
C1 X TARE
TARE
TARE
TARE
TARE
*
ZERO *
+
Note: Press the memory switch at any time during test mode to record the data to the E2PROM.
Then “P-EP” appears in the display.

Manual No. 0183B 8/29 IPC Series Service Manual
2.1.2 Key Functions (when setting value)
Key Function
ON
OFF
- Use at TEST mode startup.
(Press this key while the TARE key is depressed.)
- Use at TEST mode end
ZERO - Use when selecting digits.
TARE - Press when fixing values after mode or data selection.
- Increments values for each press during data change.
Â- Press when entering C3 or F mode
(Tactile switch in the main circuit board)
Stores E2ROM data set for each item of the C and F mode.
Memory
Switch
2.1.3 Starting Test Mode
Operation Display
1. Press and release the ON/OFF key while the TARE
key is depressed.
2. Release the TARE key.
2.1.4 Ending Test Mode
Operation Display
1. C mode / F mode status
2. Release the ON/OFF key after depressing for one
second or more.
2.1.5 Memory Switch
Operation Display
1. C mode / F mode status
2. Press the Memory Switch.

Manual No. 0183B 9/29 IPC Series Service Manual
2.1.6 C1 Mode – Country No. Setting
1) Country No. Table
Country No.
1 2 3 4 5 6 7
JPN ASIA USA
AUS
CAM EU
Item Data Wei-
ght Digit Bit
0 0 0 0 0 0 0 Start range 0: ±10%
1: ±2% 1 D0
0 0 0 0 1 0 0 Zero point mark
0: Lights on at true zero
1: Lights on at
Provisional zero
2 D1
1 0 0 0 1 0 0
Below true zero
indication
0: "___"
1: Negative value 4 D2
0 0 0 0 1 0 0
Cleaning tare
weight by pressing
ZERO key
0: No
1: Yes 8
100
D3
0 0 1 0 0 0 1
Decimal point
Indicator
0: "."
1: "," 1 D4
0 0 0 1 0 0 0
Over-scale
indication
0: BLANK
1: "OL" 2 D5
0 0 0 0 1 0 0 Tare subtraction
0: Not possible
1: Possible 4 D6
0 0 0 0 0 1 1
ZERO key during
tare subtraction
0: Possible
1: Not possible 8
101
D7
0 0 0 0 0 0 0
Stabilized,
re-stabilized
frequency
0: 5 times.
1: 8 times. 1 D8
0 0 0 0 0 0 0
Re-stabilization
Starting range
0: 2 times over
1: 4 times over 2 D9
0 0 0 0 0 0 0
Stabilized/re-
stabilized range
0: 3 times
1: 5 times 4 D10
1 0 0 0 0 0 0
Section
adjustment
0: No
1: Yes (JAPAN) 8
102
D11
804 000 010 020 04E 080 090 ←Display of F mode Measurement Condition
2) Operation
Operation Display
1. Stating Test
2. Setup of Country No.
- To select the No., use the [ * ] key
- Example: ASIA=2
3. When the C2 mode is then required, press the TARE key.
- When finishing, press the Memory Switch to record the
data to the memory, and enter the Ending Test Mode.

Manual No. 0183B 10/29 IPC Series Service Manual
2.1.7 C2 Mode – Scale No. and Decimal point Setting
1) Scale No.[ X1 ] Table
X1 Specifications A/D Counts
1 3kg (2g/1g) Multi interval 30000 (20/10)
2 6kg (5g/2g) Multi interval 30000 (25/10)
3 15kg (10g/5g) Multi interval 30000 (20/10)
4 30kg (20g/10g) Multi interval 30000 (20/10)
5 3kg (1g) Single range 30000 (10)
6 6kg (2g) Single range 30000 (10)
7 15kg (5g) Single range 30000 (10)
8 30kg (10g) Single range 30000 (10)
9 6lb (0.005lb/0.002lb) / 3kg (2g/1g) Multi interval lb/kg 30000 (25/10) / 30000 (20/10)
A 15lb (0.01lb/0.005lb) / 6kg (5g/2g) Multi interval lb/kg 30000 (20/10) / 30000 (25/10)
B 30lb (0.02lb/0.01lb) / 15kg (10g/5g) Multi interval lb/kg 30000(20/10) / 30000 (20/10)
C 60lb (0.05lb/0.02lb) / 30kg (20g/10g) Multi interval lb/kg 30000(25/10) / 30000 (20/10)
D 100oz (0.1oz/0.05oz) Multi interval oz 20000 (20/10)
2) Decimal point indication [ X2 ] Table
X2 Display
1 "0"
2 "0.0"
3 "0.00"
4 "0.000"

Manual No. 0183B 11/29 IPC Series Service Manual
3) Operation
Operation Display
1. Stating Test
X2 X1
2. Scale No. and Decimal point indication mode
- Press the [ TARE ] key ON →(1st digit flashes)
- Example: ASIA 3kg (1g) Single range X1=5, X2=4
2.1 Scale No. Setting
- Press the [ * ] key ON four times (X1=5)
X2 X1
2.2 Decimal point indication Setting
- Press the [ ZERO ] key ON →(2nd digit flashes)
X2 X1
- Press the [ * ] key ON three times (X2=4)
X2 X1
- When the C3 mode is required, press the TARE key.
- When finishing, press the Memory Switch to
record the data to the memory, and enter the Ending
Test Mode.
2.1.8 C3 Mode – Span Adjustment
1) Operation
Operation Display
1. Stating Test
2. Span Adjustment mode
2.1 Press the TARE key ON for two times.
2.2 Press the [ * ] key ON →displays original A/D data
(The normal range for original A/D data is 1000 to
25000 counts).
2.3 Press the [ * ] key ON with zero load on the weigh
platter →Approx. 5000 count is diplayed.

Manual No. 0183B 12/29 IPC Series Service Manual
2.4 Press the ZERO key if the count diverges from 5000
counts.
2.5 Put the weight same as weighing capacity on the
weigh platter, then press the [ * ] key →"CAL" is
displayed, then the A/D count becomes "35000" on
the display.
If the count diverges from 5000 counts, unload the
weight and repeat the operations as set out in 2.4 and
2.5.
2.6 When the C3 mode is required, press the TARE key.
- When finishing, press the Memory Switch to
record the data to the memory, and enter the Ending
Test Mode.
•“CAL” operation can not be performed unless zero-point adjustment is finished.
•“CAL” operation can not be performed unless the original A/D value exceeds
33300 counts when the weight is loaded.
2.1.9 F Mode – Setting measuring conditions and E2ROM clear
•All data has been fixed according to country specifications.
•Altering data may not conform to weighing and measuring tests for a country.
•See 1.6 “C1 Mode-Country No. Setting” for Measurement Conditions Setup
Table.
1) Operation
Operation Display
1. Stating Test
2. Setting measuring conditions
2.1 Press the TARE key for three times
2.2 Press the [ *] key →The least significant digit blinks.
Whenever the [ *] key is pressed, the required digit can be
selected.
2.3 Whenever the [ *] key is pressed, the figure of the digit
which has blinked does the increment.

Manual No. 0183B 13/29 IPC Series Service Manual
3. E2ROM clear
･Any scene of F mode is possible.
3.1 Press the ZERO key and [ * ] key. →"EP-C" then "C1-1" is
displayed.
At this point, writing in E2ROM of change data in
F mode and the default value to E2ROM clear
has not been cpmlpeted. Push the memory
switch.
E2ROM clear initializes Country No., Scale No.,
Zero, and Span adjustment values. It is
necessary to set it again.
↓
4. Writing in E2ROM
･Push the memory switch to memorize data.
After E2ROM is cleared, if writing is performed in
E2ROM without setting Country No., Scale No.
nor Zero/Span adjustment value, and the power
is turned on, "Err1" is displayed and it is not
possible to use the machine. Set C1, C2, and C3
again.
Data after E2ROM is cleared
Mode Data Item
C1 1 JAPAN
C2 11 Scale No.= 3kg (2g/1g) Multi interval Decimal point indication= " 0"
C3 Zero point and span adjustment value and each approximate value
F 804 Measurement condition
2.1.10 Error No. List
Error No. Mode Item
Err1 At power ON E2PROM unsetting or garbled data
Err2 At power ON Outside start range
Err3 Test mode Outside range where zero point can be adjusted (original A/D 1000
count or less)
Err4 Test mode (Original A/D 25000 count or more)
Err5 Test mode Outside span adjustment possible range (original A/D 33300 count
or more)
Err6 Normal mode Original A/D zero count or less

Manual No. 0183B 14/29 IPC Series Service Manual
Chapter 3 Hardware Configuration
3.1 Mechanisms
3.1.1 Small Size (3kg, 6kg)

Manual No. 0183B 15/29 IPC Series Service Manual
IPC 3kg､6kg Single Display Asia Service Parts List
No. Parts Name Weighing Capacity Q'ty
1 PLATTER 1
2 PLATE: SUPPORT 2
3 LOAD CELL (CZL-6D-C3-5kg-1000) 3kg 1
3 LOAD CELL (CZL-6D-C3-10kg-1000) 6kg 1
4 CASE 1
5 BASE 1
6 FOOT: LEVEL 4
7 BATTERY: COVER 1
8 LUCENT: PLATE 1
9 SHEET: DISPLAY: FRONT 3kg 1
9 SHEET: DISPLAY: FRONT 6kg 1
10 SHEET: DISPLAY: REAR 1
11 SLEEVE 4
12 NAME PLATE: SPEC 3kg 1
12 NAME PLATE: SPEC 6kg 1
13 PUSH RIVET 2
14 PWB PS-005A 1
15 LEVEL UNIT 1
18 SCREW ST 4 x 14 4
19 SCREW M 6 x 25 4
20 WASHER 6 4
21 SPRING WASHER 6 4
22 SCREW M 4 x 12 8
23 SCREW ST 3 x 8 3
24 SCREW M 5 x 16 4
26 SCREW M 4 x 10 5
27 SCREW ST 4 x 10 2
30 CUSHION BATTERY 2
31 SCREW M 4 x 12 1
32 SHEET 2
33 BATTERY HARNESS 1
34 SPRING 1 1
35 SPRING 2 1
36 WASHER 5 4
37 E: RING 3 1
38 PRINTER GND CORD 1
39 FILTER 1
40 PROTECT:SHEET 1
Note: Parts number may change without notice due to product improvement.

Manual No. 0183B 16/29 IPC Series Service Manual
3.1.2 Large Size (15kg、30kg)

Manual No. 0183B 17/29 IPC Series Service Manual
IPC 15kg,30kg Single Display Asia Service Parts List
No. Parts Name Weighing Capacity Q'ty
1 PLATTER 1
2 CASE 1
3 LUCENT: PLATE 1
4 SHEET: DISPLAY: FRONT 15kg 1
4 SHEET: DISPLAY: FRONT 30kg 1
5 SCREW ST 3 x 8 3
6 PWB PS-005A 1
7 PRINTER GND CORD 1
8 SCREW ST 4 x 14 4
9 LOAD CELL (CZL-6D-C3-25kg-1000) 15kg 1
9 LOAD CELL (CZL-6D-C3-50kg-1000) 30kg 1
10 SCREW M 4 x 12 2
11 SCREW M 5 x 25 4
12 PLATE: SUPPORT 2
13 PLATE: A: COVER 1
14 SCREW M 4 x 10 9
15 FOOT: LEVEL 4
16 PROTECT: SHEET 1
17 E: RING 3 1
18 SCREW M 4 ｘ12 1
19 BATTERY: COVER 1
20 CUSHION BATTERY 2
21 SPRING 1 1
22 SHEET 1
23 LEVEL UNIT 1
24 SPRING 2 1
25 BASE 1
27 BATTERY HARNESS 1
28 FILTER: CORE 1
29 SCREW M 6 x 25 4
30 WASHER 6 4
31 SPRING WASHER 6 4
32 NAME PLATE: SPEC 15kg 1
32 NAME PLATE: SPEC 30kg 1
33 PUSH RIVET 2
35 SHEET: DISPLAY:REAR 1
Note: Parts number may change without notice due to product improvement.

Manual No. 0183B 18/29 IPC Series Service Manual
3.2 Electric Concerns
3.2.1 Block Diagram
Load cell
(4 types depending on
weighing capacity
Batteries
GND connection Main board PS-005
AC adaptor
(Option)
3.2.2 Board PS-005
CN4
JP1
CN3
CN1
SW5
JP3
CN6
JP2
JP4
GND
(Ｂ)
(Ｇ)
(W)
(R)
JP5
CN2
JP6
CN5

Manual No. 0183B 19/29 IPC Series Service Manual
Connector
CN1: AC adaptor input
Pin No. Function Remarks
2 AC adaptor power source DC 2.4 to 6.0V
3 GND (Circuit)
4 GND (Battery)
CN2: Battery input
Pin No. Function Remarks
1 GND (Battery)
2 Battery power source DC 2.2 to 3.2V
CN3: Not used
CN4: LCD display data output
CN5: Not used
CN6: Load cell input
Pin No. Soldering land Function Remarks
1 (R) Vcc DC5v
2 (W) GND GND
3 (G) IN+ Approx 2.5v
4 (B) IN- Approx 2.5v
5 GND GND GND
Jumper
JP1: Ferrite cut
JP2: Ferrite cut
JP3: Ferrite cut
JP4: Ferrite cut
JP5: Battery GN and Circuitry GND
JP6: Filter cut
Switch
SW5: E2ROM Memory switch