Rice Lake Ishida IPC-WP Series User manual

1/32 IPC-WP 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
Danger
Indicates information that, if not avoided, is likely to result in loss of life or serious
injury.
Warning
Indicates information that, if not avoided, may result in loss of life or serious
injury.
Caution
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
Note Indicates information to call or emphasize for attention to the note.
Reference
Ref erenc e Indicates the reference page.
Information
Information
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.

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Contents
Chapter 1. Product Overview .................................................................................... 3
1.1 Product Overview.........................................................................................................3
1.2 Standard Specifications ...............................................................................................3
1.3 Appearance..................................................................................................................5
1.4 Operation Panel ...........................................................................................................6
1.5 Outer Dimensions ........................................................................................................8
Chapter 2 Test Mode ................................................................................................. 9
2.1 Test Mode Flow............................................................................................................9
2.2 Starting Test Mode.....................................................................................................10
2.3 Ending Test Mode ......................................................................................................10
2.4 Memory Switch...........................................................................................................11
2.5 C1 Mode – Country No. Setting .................................................................................11
2.5.1 Country No. Table................................................................................................. 11
2.5.2 Operation..............................................................................................................12
2.6 C2 Mode – Scale No. and Decimal Point Setting.......................................................12
2.6.1 Scale No.[ X1 ] Table ............................................................................................12
2.6.2 Decimal Point Indication [ X2 ] Table ....................................................................12
2.6.3 Operation..............................................................................................................13
2.7 C3 Mode – Span Adjustment .....................................................................................14
2.7.1 Operation..............................................................................................................14
2.8 F Mode – Setting Measuring Conditions and E2ROM Clear......................................15
2.8.1 Operation..............................................................................................................15
2.8.2 Error No. List ........................................................................................................16
Chapter 3 Hardware Configuration........................................................................ 17
3.1 Mechanisms ...............................................................................................................17
3.1.1 Dual Display .........................................................................................................17
3.1.2 Single Display.......................................................................................................19
3.2 Electric Concerns .......................................................................................................21
3.2.1 Block Diagram ......................................................................................................21
3.2.2 Main Board PS-021 ..............................................................................................22
3.2.3 Switch Board PS-022 ........................................................................................... 24
3.2.4 Dual Display Board PS-023..................................................................................24
3.2.5 Connection Board PS-019....................................................................................24
Chapter 4 Maintenance ........................................................................................... 25
4.1 Disassembly Procedure .............................................................................................25
4.1.1 Case Disassembly Procedure & Assembly Procedure .........................................25
4.1.2 Main Board (PS-021) Replacement...................................................................... 27
4.1.3 Switch Board (PS-022) Replacement ...................................................................27
4.1.4 Customer Display Board (PS-023) Replacement .................................................28
4.1.5 Load Cell Replacement ........................................................................................28
4.1.6 Airproof Rubber Ring Replacement......................................................................31
4.2 Troubleshooting .........................................................................................................32

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Chapter 1. Product Overview
1.1 Product Overview
•The IPC-WP Series is a water proof type 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
Model name IPC-WP Series /IPC-WP DUAL Series
IPC-WP 3 IPC-WP 6 IPC-WP 15
Non-OIML(ASIA)
Weighing capacity 3kg 6kg 15kg
Single range Single range Single range
Scale unit 0.001kg 0.002kg 0.005kg
3.000kg/0.001kg 6.000kg/0.002kg 15.000kg/0.005kg
Accuracy 1/3000
OIML R76 Class lll
Weighing capacity 3kg 6kg 15kg
Multi interval Multi interval Multi interval
Scale unit 0kg to 1.5kg/0.001kg
1.5kg to 3kg/0.002kg
0kg to 3kg/0.002kg
3kg to 6kg/0.005kg
0kg to 7.5kg/0.005kg
7.5kg to 15kg/0.01kg
Accuracy 1/1500 1/1200 1/1500
lb/kg Switching Specification (USA)
Weighing capacity 6lb/3kg 15lb/6kg 30lb/15kg
Multi interval Multi interval Multi interval
Scale unit
0lb to 3lb/0.002lb
3lb to 6lb/0.005lb
0lb to 7.5lb/0.005lb
7.5lb to 15lb/0.01lb
0lb to 715lb/0.01lb
15lb to 30lb/0.02lb
(0kg to 1.5kg/0.001kg)
(1.5kg to 3kg/0.002kg)
(0kg to 3kg/0.002kg)
(3kg to 6kg/0.005kg)
(0kg to 7.5kg/0.005kg)
(7.5kg to 15kg/0.01kg)
Accuracy 1/1500
Weigh platter size 196mm(L)×226mm(W)
Display Single display / Dual diaplay
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) 3.2kg

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Item Description
Option AC adaptor (Dealer Option)
xOutput voltage
y3.2 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%.
yGenerally, AC adaptor output voltage varies with load current.
Confirm output voltage with a 25mA load current (IPC current)
yOutput plug configuration/polarity
xConfiguration Specification EIAJ RC-5320-2
- Polarity Center Plus

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1.3 Appearance
Front & Rear view
Bottom view
Memory switch
Battery cover assy
Two D-sized dry
batteries
Battery rubber plug
(option)
Sheet 3

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1.4 Operation Panel
ASIA Specification
Oceania Specification

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EU Specification
USA Specification

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1.5 Outer Dimensions
(Unit: mm)

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Chapter 2 Test Mode
The Test Mode is used for diagnosis and/or setting at maintenance service.
2.1 Test Mode Flow
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.
Program No. display
START L003b
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
Setup of country No.
C1 X TARE
TARE
TARE
TARE
TARE
*
ZERO *
+

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¡Key Functions (when setting value)
Key Function
Asia Oceania EU USA
xUse at TEST mode startup.
(Press this key while the TARE key is depressed.)
xUse at TEST mode end
xUse when selecting digits.
xPress when fixing values after mode or data selection.
xIncrements values for each press during data change.
xPress when entering C3 or F mode
Memory
Switch
(Tactile switch in the main circuit board)
Stores E2ROM data set for each item of the C and F
mode.
2.2 Starting Test Mode
Operation Display
1. Press and release the ON/OFF key while the TARE key is
depressed.
2. Release the TARE key.
2.3 Ending Test Mode
Operation Display
1. C mode / F mode status
2. Release the ON/OFF key after depressing for one second
or more.

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2.4 Memory Switch
Operation Display
1. C mode / F mode status
2. Press the Memory Switch.
2.5 C1 Mode – Country No. Setting
2.5.1 Country No. Table
Country No.
Item Data Wei-
ght Digit Bit
1 2 3 4 5 6 7
JPN ASIA USA
AUS
CAN
EU
0 0 0 0 0 0 0 Start range 0: ±10%
1: ±2% 1
100
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 D3
0 0 1 0 0 0 1
Decimal point
Indicator
0: "."
1: "," 1
101
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
Tare clear with ZERO
key
0: Possible
1: Not Possible 8 D7
0 0 0 0 0 0 0
Stabilized,
re-stabilized
frequency
0: 5 times.
1: 8 times. 1
102
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 D11
804 000 010 020 04E 080 090 ←Display of F mode Measurement Condition

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2.5.2 Operation
Operation Display
1. Stating Test
2. Setup of Country No.
xTo select the No., use the [ * ] key
xExample: ASIA=2
3. When the C2 mode is then required, press the TARE key.
xWhen finishing, press the Memory Switch to record
the data to the memory, and enter the Ending Test
Mode.
2.6 C2 Mode – Scale No. and Decimal Point Setting
2.6.1 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)
2.6.2 Decimal Point Indication [ X2 ] Table
X2 Display
1 "0"
2 "0.0"
3 "0.00"
4 "0.000"

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2.6.3 Operation
Operation Display
1. Stating Test
2. Scale No. and Decimal point indication mode
xPress the [ TARE ] key ON →(1st digit flashes)
xExample: ASIA 3kg (1g) Single range X1=5, X2=4
2.1 Scale No. Setting
xPress the [ * ] key ON four times (X1=5)
X2 X1
X2 X1
2.2 Decimal point indication Setting
xPress the [ ZERO ] key ON →(2nd digit flashes)
X2 X1
xPress the [ * ] key ON three times (X2=4)
X2 X1
xWhen the C3 mode is required, press the TARE key.
xWhen finishing, press the Memory Switch to record
the data to the memory, and enter the Ending Test
Mode.

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2.7 C3 Mode – Span Adjustment
2.7.1 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.
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.
xWhen finishing, press the Memory Switch to record
the data to the memory, and enter the Ending Test
Mode.
Note
•“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.

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2.8 F Mode – Setting Measuring Conditions and E2ROM Clear
Note
•All data has been fixed according to country specifications.
•Altering data may not conform to weighing and measuring tests for a country.
Reference
Reference
•See 1.6 “C1 Mode-Country No. Setting” for Measurement Conditions Setup
Table.
2.8.1 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.
3. E2ROM clear
･Any scene of F mode is possible.
Press the ZERO key and [ * ] key. →"EP-C" then "C1-1" is
displayed.
↓
Note
At this point, writing in E2ROM of change data in F
mode and the default value to E2ROM clear has
not been completed. Push the memory switch.
Note
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.
Note
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.

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¡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
2.8.2 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

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Chapter 3 Hardware Configuration
3.1 Mechanisms
3.1.1 Dual Display