Vibra AJH Series Manuale utente

AJ(H) Series

ServiceManual

Contents

SECTION 1 TOTAL VIEW

1‑1 TOTAL VIEW OF AJ TYPE ・・・・・・・・・・・・・・1

1‑2 TOTAL VIEW OF AJH TYPE・・・・・・・・・・・・・・1

SECTION 2 ELECTRONIC CONSTRUCTION

2‑1 BLOCK DIAGRAM ・・・・・・・・・・・・・・・・・・2

2‑2 WHOLE WIRING・・・・・・・・・・・・・・・・・・・3

SECTION 3 TROUBLESHOOTING

3‑1 TROUBLESHOOTING PROCEDURE ・・・・・・・・・・・・4

3‑2 TROUBLESHOOTING TABLE ・・・・・・・・・・・・・・5

3‑3 PRIMARY CHECKS・・・・・・・・・・・・・・・・・・6

3‑4 CHECKS FOR ELECTRIC/ELECTRONIC PARTS・・・・・・・7

SECTION 4 ADJUSTMENT AND SETTING

4‑1 SPAN CALIBRATION・・・・・・・・・・・・・・・・・8

4‑2 LOCK SWITCH ・・・・・・・・・・・・・・・・・・・10

4‑3 CORNER ERROR ADJUSTMENT ・・・・・・・・・・・・・11

4‑4 ADJUSTMENT SEQUENCE FOR CASES ・・・・・・・・・・13

4‑5 RESETTING ADDRESS DATA・・・・・・・・・・・・・・14

4‑6 LINEARITY ADJUSTMENT・・・・・・・・・・・・・・・16

4‑7 CALIBRATION OF BUILT‑IN WEIGHT・・・・・・・・・・18

SECTION 5 PARTS REPLACEMENT

5‑1 HOW TO REMOVE THE CASE・・・・・・・・・・・・・・20

5‑2 HOW TO COVER THE CASE ・・・・・・・・・・・・・・21

5‑3 SEQUENCE OF MECHANISM UNIT REPLACEMENT・・・・・・22

5‑4 SEQUENCE OF TUNING‑FORK SENSOR REPLACEMENT・・・・25

5‑5 SEQUENCE OF THE AJDP CIRCUIT BOARD REPLACEMENT・・25

5‑6 HOW TO REMOVE CALIBRATION WEIGHT UNIT ・・・・・・27

5‑7 HOW TO INSTALL CALIBRATION WEIGHT UNIT・・・・・・29

SECTION 6 INSTALLATION OPTIONS

6‑1 INSTALL OF BATTERY OPTIONS・・・・・・・・・・・・30

SECTION 7 PARTS LIST

7‑1 AJ‑220〜1200・・・・・・・・・・・・・・・・・・・32

7‑2 AJ‑2200〜12K・・・・・・・・・・・・・・・・・・・34

SECTION1TotalView

1-1 TOTALVIEWOFAJTYPE- 220〜1200g-

1-2 TOTALVIEWOFAJHTYPE- 220〜620g,2200g,4200g-

2-1 BLOCKDIAGRAM

Micro-

Processor

ＬＣＤ

EEPROM

Oscillation

Circuit

Power

Circuit

AJDPCIRCUITBOARD

BatteryUnit

(Option)

6VDC

MECHANISM

UNIT

Tuning

Fork

ON/OFF MemorySetFunctionZero/Tare

ACAdaptor

RS232C

Driver

AJLFCIRCUIT

BOARD

AJIF

CIRCUIT

BOARD

CN1

CN3

CN5CN4

CalibrationWeightUnit

(AJHonly)

ＡＪＨ

uPD78P0308Y

AJHonly

Lock

Switch

AJ,AJH

SECTION2ELECTRONIC CONSTRUCTION

2-2 WHOLEWIRING

AJDPCIRCUITBOARD

MECHANISM

UNIT

Tuning

Fork

ON/OFF MemorySetFunctionZero/Tare

CalibrationWeightUnit

(AJHonly)

CN５

CN４

CN３

CN１

CN2

T1T2T3

DJBT

CN1

BatteryUnitOption

AJIF

CIRCUIT

BOARD

CN１

AJLF

CIRCUIT

BOARD

CN２

ＡＪＨ

AJHonly

Lock

Switch

AJ,AJH

3-1 TROUBLESHOOTINGPROCEDURE

SECTION3TROUBLESHOOTING

SYMPTOMSCAUSES&REMEDY

Nodisplay lightson1.AJDPboardis defective.

2.ACadaptoris defective.

3.Wrongconnectionofconnection cords inside.

4.Built-inbattery(option)is discharged.

q-nor-n

appears selftestof

segments

1.Wrongweighingpanis applied..

2.Tuning-fork sensorormechanismunitis defective.

3.AJDPboardis defective.

4.Settingofaddress data hasmistake.

5.Coefficientmemories(address data)have changed by

noisesorstatic electricity.Adjustlinearity

Display dose notget

settled down.

Display dose not

repeatcorrectly.

Zeropointdrifts.

1.Someparts such as stoppertouchesothers.

2.Weighingpantouchesotherparts.

3.Foreignsubstance is inthe scale.

4.Tuning-fork sensorormechanismunitis defective.

5.Affected by a windordisturbingoscillation.Check

environmentorworkingbase.Checkalsosettingof

stabilizationtime.See page**ofoperationmanual.

-n appears

withanetloadless

thanspecified

capacity(F.S.+9d).

1.Gross weight appliedtothe scalepan(netweight+tare

value)exceedsthe scale capacity.

2.Coefficientmemories(address data)have changed by

noisesorstatic electricity.Adjustlinearity.

3.Settingofaddress data hasmistake.

4.Calibrationweightis notcorrect.

Spanisoutof

specifiedrange.1.Tuning-fork sensorormechanismunitis defective.

2.AJDPboardis defective.

3.Settingofaddress data hasmistake.

4.Coefficientmemories(address data)have changed by

noisesorstatic electricity.

Linearityisoutof

specifiedrange.1.Tuning-fork sensorormechanismunitis defective.

2.Settingofaddress data hasmistake.

3.Coefficientmemories(address data)have changed by

noisesorstatic electricity.

4.Calibrationweightis notcorrect.

3-2 TROUBLESHOOTINGTABLE

SYMPTOMSCAUSES&REMEDY

Cornererroristoo

much.1.Mechanismunitis defective,such asRobervalplate(Spring)

hasbeen bentortwisted.

2.panbasetouchesotherparts.

Display suddenly

disappearedin

operation.

1.Built-inbattery(option)hasbeen consumed.

2.AJDPboardis defective.

3.ACadaptoris defective.

k-nappears.1.AJDPboardis defective.

2.Coefficientmemories(address data)have changed bynoises

orstatic electricity.Adjustlinearity.

m-nappears.1.Address data relatedtodetermine the capacity hasbeen

destroyed.･･･Contact the shipper.

2.AJDPboardis defective.

b-nappears.1.The calibrationweightis less than 1/2 F.S.

c-nappears.1.The data errorexceeds0.4%.Orperhapsthe scalemay be

defective.Contact the sipper.

3-3 PRIMARYCHECKS

1.Isanywindaroundthe site?

Isanyoscillation?Isthe workingtablestable?

2.Isanythingunderthe panbaseorthe weighingpan?

3.Isthe weighingpanrightone?

4.IsACadaptorconnected bothwiththe scaleandwiththe scale

andwiththe outletproperly?

5.Isbatteryoption chargedsufficiently?

3-4 CHECKSFORELECTRIC/ELECTRONICPARTS

-AJDPCircuitboard-

Checks forelectric/electronicpartsaretobe carriedoutonbackofAJDP

boardafter removingthe uppercase,at testPointsandPinsofCN1,CN4,

TP4ANDTP6.

1234

SHINKO

TP1

TP0

TP2

TP3

TP4

TP6

CN1

CN2

CN3

CN4

CN5

1.Checkofinputvoltage

TP0-①ofCN1・・・・・・・+8V〜+12V

2.Powervoltageinthe circuit

TP0-②ofCN4・・・・・・・+4.75V〜+5.25V

3.Checkofsignalwaves(1)

4.Checkofsignalwaves(2)

2.5V



3.5V

P-P

TP0-TP6

TP0-TP4

0V1.9〜1.3msec

(520Hz〜780Hz)

AJDP

TP5

4-1 SPANCALIBRATION(CAL)

SECTION4ADJUSTMENTSANDSETTINGS

1.AJType

1.Itisrecommendedtouseacalibrationweightofbetter

accuracythanthe scale.

2.The calibrationisavailablewith 1/2 ofF.S.Nevertheless,itis

recommendtousweightclosertoF.S.foraccurate calibration.

3.Errormessages:

n:The calibrationweightisoverthe full capacity

bn:The calibrationweightisless than 1/2 ofthe capacity.

cn:The dataerrorexceeds1%.Orperhapsthe scale

may bedefective.

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