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PW-II

Service Manual

14

3.

The Schematics and Diagram

3.1.

System Block Diagram

Load

Cell

A/D

Converter

(ADS1100)

CPU

( NEC 78Fseries)

KEY

EEPROM

(24C02)

AMP

&

Filter

POWER

(DC 9V/300mA)

Battery_AA SIZE

(1.5V x 6)

LCD

Driver

DISPLAY

(LCD)

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Summary of Contents for PW-10H

Page 1: ...PW II Service Manual 1 PW II SERVICE MANUAL Downloaded from www Manualslib com manuals search engine...

Page 2: ...g 9 2 1 1 4 C4 4 Setting 9 2 1 1 5 C4 5 4 6 Setting 10 2 1 2 SPAN Calibration Setting C 3 10 2 1 3 Gravity Constant Value Setting C 9 11 2 1 4 Displaying Real A D Value C 5 11 2 1 5 How to confirm SPA...

Page 3: ...1 Main PCB Ass y 22 6 1 2 Battery PCB Ass y 23 6 1 3 Key PCB Ass Y 23 6 2 Mechanism Part 24 6 2 1 Body Ass y 24 6 2 2 C T Box Ass y 25 6 2 3 Loadcell Ass y 25 7 Error Message Solution 26 7 1 Beep Re...

Page 4: ...scale into the proper power outlet Place the scale on a flat and stable surface Plug into a power outlet 30 minutes before operations Keep the scale away from strong EMI noises may cause incorrect wei...

Page 5: ...20 lb 0 005 lb 400 oz 0 1 oz 1 4 000 Internal Resolution 1 20 000 1 25 000 1 20 000 External Resolution 1 2 000 1 2 500 1 2 000 Display 91 X 39 mm 3 6 X 1 5 inch 5 digits LCD Symbols Indicators STABL...

Page 6: ...stable This weight is average value UNIT Used to convert the unit of weight TARE To input or cancel the tare the weight of container ZERO O Set To set zero point To do SET key in the SETUP mode POWER...

Page 7: ...PW II Service Manual 7 1 5 Sealing Method Downloaded from www Manualslib com manuals search engine...

Page 8: ...n Mode Pressing and holding Calibration Switch press POWER key It displays C 0 after CAL and it blinks the version of scale three times 2 Selecting menu press TARE and then HOLD 3 ENTER Setting ZERO k...

Page 9: ...value User can set 2 000 2 500 for low external resolution or 4 000 5 000 for high external resolution 2 1 1 2 C4 2 Setting Capacity Setting UNIT kg g lb oz C4 2 Value 2 2 000 5 80 0000 1XXX 5 5 000...

Page 10: ...essing and holding Calibration Switch press POWER key After CAL message blinks three times and shows the version of scale it displays C 0 message 2 Press TARE to display C 3 3 Press ZERO key and then...

Page 11: ...HOLD and TARE key 5 Press ZERO key and then G 2 message blinks 9 7994 will be shown The first digit 9 will blink 6 Input a gravitational acceleration value by using HOLD and TARE key 7 Press ZERO key...

Page 12: ...increase the value For example when you weigh maximum capacity on the platter in case of 1 20 000 it may display 19 999 or 20 001 You can adjust up or down to 20 000 using HOLD or TARE key 5 Press ZE...

Page 13: ...START C 4 C 4 1 C 4 2 Display Unit TARE Option C 4 6 Unit Change C 9 Gravity 1 2 G 1 G 2 C 3 SPAN UnLOAd LOAd 3 C 1 Trim m ing 4 Factored Value LOAd Up Down END Capacity Interval C 4 4 Initial Zero D...

Page 14: ...s and Diagram 3 1 System Block Diagram Load Cell A D Converter ADS1100 CPU NEC 78Fseries KEY EEPROM 24C02 AMP Filter POWER DC 9V 300mA Battery_AA SIZE 1 5V x 6 LCD Driver DISPLAY LCD Downloaded from w...

Page 15: ...K 1F 1G 1E 1D 1A 1B 1C 1P 1Z S 2 S 3 S 4 HI 2A 2B 2C 2P 2Z 3F 3G 3E 3D 3A 3B 3C 3P 3Z 4F 4G 4E 4D 4A 4B 4C 4P 4Z 5F 5G 5E 5D 5A 5B 5C O Z LB K G 2F 2G 2E 2D P CS VDD AUTO POWER 2 E C11 30p R22 100 U2...

Page 16: ...Document Number Rev Date Sheet of R21 150K VDD C105 C2 330u A4 MMZ1608Y102C L2 471u MMZ1608Y102C R17 100k VIN L1 471u L7 1 2 J2 L C CON 1 1 2 3 4 5 6 7 8 9 10 L10 1 2 SIG C18 0 1uF C20 1 uF MMZ1608Y10...

Page 17: ...PW II Service Manual 17 4 Exploded View Downloaded from www Manualslib com manuals search engine...

Page 18: ...PW II Service Manual 18 5 Part Location 5 1 Main PCB Front Downloaded from www Manualslib com manuals search engine...

Page 19: ...PW II Service Manual 19 5 2 Main PCB Rear Downloaded from www Manualslib com manuals search engine...

Page 20: ...PW II Service Manual 20 5 3 BATTERY PCB Downloaded from www Manualslib com manuals search engine...

Page 21: ...PW II Service Manual 21 5 4 KEY PCB Downloaded from www Manualslib com manuals search engine...

Page 22: ...0022 0 RESISTOR CHIP 1 10W FTR 0805 222 JR 2 2K EA 1 6527 IJ3 0100 0 RESISTOR CHIP 1 10W FTR 0805 103 JR 10K EA 7 6527 ID3 0300 0 RESISTOR CHIP 1 10W RR1220P 303D 30 EA 2 6527 ID3 0499 0 RESISTOR CHI...

Page 23: ...Parts Code Parts Name Unit Q ty 6140 PPW 0000 0 PCB BATTERY 6140 PPW 0000 0 PW II EA 1 1060 A00 0010 0 BATTERY CONTACT 12 10 7 5 0 4t PORTION EA 12 1590 A00 0005 0 COIL SPRING 0 5 8 2 5 4 PW EA 6 7809...

Page 24: ...MSU 0408 0 SCREW MACHINE PH M4 8 SUS EA 3 18 1530 MSU 0510 0 BOLT WRENCH M5 1 0 10 SUS EA 6 15 16 1540 A00 0300 0 NUT HEX M3 0 5 EA 4 19 1561 MSU 0300 0 E RING 3 7 0 6 SUS EA 1 21 1810 PW0 0033 0 SPEC...

Page 25: ...2 9203 AS0 0001 0 STYROFOAM BOX 301 109 80 PORTION SET 1 9301 A00 0003 0 POLY BAG 170 250 0 05T MANUAL EA 1 9301 A00 0004 0 POLY BAG 190 260 0 03T DISPLAY EA 1 9302 A00 0005 B POLY BAG 270 350 0 04T M...

Page 26: ...0 of full capacity by decreasing the value of weight 7 3 Init Failure of Analog Module Init message shows up when there is some problem on analog module Please turn off the scale and turn on If you st...

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