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Summary of Contents for 50

Page 1: ...0 220 240 VAC 50 60 Hz 10W SECTION ONE SUMMARY OPERATING Cancelling Weight of Objects on Platform INSTRUCTIONS Overload ss To Adjust Platform 11 Cleani eaning siii TolowerEnds 1 4 Battery Operation i...

Page 2: ...button to unlock display Press Average Unlock again Wait for Averaging light to stop blinking and Locked light to come on Read weight To Recall Weight If Scale is turned off press Recall to display la...

Page 3: ...ght will lock into the display Press again to un lock display Recall Press to display thelastlocked weight NOTE Recall only operates when the Scale is turned off ox Status Lights Locked Green Child s...

Page 4: ...t moving read and record the live weight displayed Child Moving If the display is changing too rapidly to get an accurate live weight press the Average Unlock button The yellow Averaging light starts...

Page 5: ...negative weight Press Zero again to re zero the Scale Overload If the load exceeds 55 pounds 25 kg the Overload signal on the display will come on Reduce the weight on the Scale platform Cleaning Smar...

Page 6: ...ugh bottom of shelf mounting screws must project no more that 1 above top ofshelf Otherwise they will damage the load cell when they are inserted into the Scale Electrical Requirements 220 240 VAC 50...

Page 7: ...n affect weight by as much as 20 grams Calibration Frequency Scale calibration should be checked every month for the first year Then the frequency can be adjusted based on how far the Scale readings h...

Page 8: ...This provides an overview of how the Scale circuits operate CAUTION Only hospital qualified personnel should perform internal servicing Electrical shock hazard when circuits are exposed Static and Con...

Page 9: ...t be disassembled If it is damaged it should be returned to Olympic Medical for repair or replacement The Main Board test points are now exposed Fig 4 7 Removing Weighing Platform It is not necessary...

Page 10: ...th the main platform assembly removed will be around 1 2 volts Check that the signal atTP2 is correct Typical value with the main platform assembly removed will be about 1 1 volts but the A D should b...

Page 11: ...k function is still inoperative replace the Main Board Scale will not change units Pressing the Kg Lb switch should provide a low to pin 23 of U15 on Main Board If not check membrane switch on Page 4...

Page 12: ...d je EE cie za cis 620 en Oa Ul ai 1 Er al J4 I Gz TT Ag T_T ERO CO ot ie e Car TRA vaz So Li Chi4 Es J9 8 A LICE Ter y ca De 3 0 ume oaeJp3 cs ess Tee 0 LT s Tee O Fl v2 p UI3 Po sz eso ma df o res o...

Page 13: ...s present The 12 Volts are also applied to the on off latch circuit The On Off membrane switch on the front panel controls the on off latching circuit Each time the On Off switch is activated this cir...

Page 14: ...s Fig 4 16 4 17 and 4 18 U7 and U8 form a differential chopper stabilized instru mentation amplifier The gain is fixed by R18 R19 and R20 at 328 3 These are special precision resistors whose temperatu...

Page 15: ...as initialization to thePound Ounce modeand auto zeroupon power up It performs zero tracking for slow shifts less than 10 grams If weight is applied it computes weight in proper units Also it performs...

Page 16: ...to U17 U17 a switch debouncer provides some delay and toggles flip flop U18 on This turns on Q8 which energizes relay K1 When the On Off switch is released Q7 turns off but now Kl s contacts supply p...

Page 17: ...9 91019 NO CIEL QNO ata MS 81 9 vies zy MS 81 94 a31 9HO cit Ni 991 9H9 lp 440 N0 MS ANDO Jos jos Yi 1101 AS MINNA 5 weet on ve tilo m 204 108 Elo ava Or MS 0832 joy 8 Ts 45 0832 qm 8 8 GAG 6 2 DIA LI...

Page 18: ...2 4 SE 2 ICL8211 iCL8211 1 TP13 7 8 2 NC CR11 12 a 6 9178 BED 13 Us 6 ON RCL SW 17 D1 DO U14 CLK g R27 7 1 IN914 5 11 8 12 2 100K THR THR Shoe o E1 EOF 10 1 8 _lio W107DIP 1 18K 18K LO BAT 1 9 11 RES...

Page 19: ...ar 14 87 6 ca 1 7 A 36 4 5 i I D813 BIT 13 BT 5 wi 1 A c42 c32 c38T 5 5 R40 ANA COM 0812 BIT 12 87 4 ApF ur we 14066 sy 30 6 330 1 A DB11 80 11787 3 DB10 BIT 10 B 2 1 v U 2 33 sur DB9 BIT 9 BIT 1 i 1...

Page 20: ...3 24 77 510 1 BT 8 1 All I T oe 24 412 DE 1 8063 R55 9 9 22 1 5 vee 5 M 1 2 2K 25 54 no 3155 PROG 10 C56 i NC 9 wa R56 5 5 15 2 2K 1 i 24 12 UFF TO SHT 1 1 1 3 W AAA F T GND ic 7 Ty BROS P70 Js gx 10...

Page 21: ...088 SES DETAL A DOG p er SIERO ASE T NA 5 blige 0 Fig 4 18 MAIN PCB ASSY SS50 N1 220V B09 Page 4 16 x...

Page 22: ...RGING LKD GRN AVG YEL 2 2N2907 05 1 bod i 11 l 3302 1 R12 1802 3302 R11 1008 R13 1802 R10 1002 0S4 OVERLOAD te oe 3302 2N2907 04 9 01 02 2N2907 1 y 2N2907 3308 3302 2N2907 3302 NC NC NC NCNC NC NC 5 N...

Page 23: ...AIWIS DIHIVIGAd ASSV 89d AV1dSid Mu 0 0 O Fu 2 eu O Y PP N S tb 2 O Le BY EI n yD ae O y 3 0 Ste E 197 197 tor fror sar y san 10 i esa 159 22000 19 ow RR O 9 Page 4 18 SS50 N1 220V B09...

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