Welch Allyn Micro Tymp 2 Service Manual Download Page 52 | Manualshive

Page: 52 / 66

background image

SECTION 9

BILL OF MATERIALS-REPAIR

MICRO TYMP 2 PRINTER CHARGER AND HANDLE

Welch Allyn service part numbers and material numbers appearing in this manual are
for the purpose of familiarizing new technicians with the Welch Allyn parts numbering
system. Order replacement parts, as always, by referencing your latest bill of materials,
parts catalog and assembly drawings.

1

«
...
50
51
52
53
54
...
»

Summary of Contents for Micro Tymp 2

Page 1: ...4341 State Street Road P O Box 220 Skaneateles Falls NY 13153 0220 Copyright 1995 Micro Tymp 2 Tympanometric System 23640 handle 71170 printer charger Includes CE Model Service Manual Part 236409...

Page 2: ...or 236409 B New Release 5 28225 6 95 R Settembre 236409 C Added CE Updates Cautions 5 35489 6 97 R Settembre NOTE Drawings illustrations in this document are for reference only Consult system or call...

Page 3: ...o Tymp 2 Tympanometric System 23640 handle 71170 printer charger Includes CE Model Copyright 1995 Welch Allyn Co 4341 State Street Road Welch Allyn P O Box 220 Skaneateles Falls NY 13153 0220 Service...

Page 4: ...air technician Required specifications and materials are listed at each step where applicable For example Instructions will start off with a TASK TO DO For example B 3 Unplug Flex Circuit statement Th...

Page 5: ...atient or user or hazardous malfunction has occurred or is sus pected PROCEED NO FURTHER DO NOT disassemble repair adjust or in any way alter the MicroTymp 2 or the printer charger base instead notify...

Page 6: ...3 Micro Tymp 2 Noise Test Procedure Section 4 Technical Troubleshooting Guide for Micro Tymp 2 Handles Printer Chargers Section 5 Customer Service Questions Answers Section 6 CALVIN Micro Tymp 2 Cali...

Page 7: ...the battery meets requirements No corrective action is to be taken However it is good practice to put the battery on charge for however long it is in your possession OR SCENARIO 2 a If the unit DOES...

Page 8: ...AST REFER TO TUBING ROUTING DIAGRAM ON DRAWING 236300 ALIGN BOARD OVER STAND OFFS WITH BATTERY HOLDER NEAR THE BOTTOM OF THE HANDLE SCREW THE BOARD TO THE STRAIN RELIEFS WITH TWO LONG SCREWS AT THE BO...

Page 9: ...PIN STRAIGHTENING PLIERS OR FINGERS TO RE ATTACH FLEX CIRCUITS RE ATTACH FRONT HOUSING ASSEM BLY LAY FLEX CIRCUITS IN ACCORDING TO DRAWING 236300 C 5 CALIBRATE HANDLE WITH CALVIN REFER TO SECTION 6 FO...

Page 10: ...________________________ ______________________________________________________________________________ ______________________________________________________________________________ E KEYPAD ASSEMBLY...

Page 11: ...CK HOUSING REMOVE PROTECTIVE FILM FROM BEZEL RECORD LCD ID ON DOCU MENTATION ALIGN LCD ASSEMBLY WITH FLEX CIRCUIT CONNECTOR ON RIGHT HAND SIDE THEN PLACE INTO HOUSING F 4 SECURE MODULE WITH RETAINER P...

Page 12: ...EMBLY FOLLOW INSTRUCTIONS IN SECTION F G 6 REMOVE ESD SHIELDS THE LCD GASKET AND THE ESD SHIELD ARE CONNECTED WITH TWO STRIPS OF ESD TAPE THESE ASSEMBLED SHIELDS SHOULD PULL OUT OF THE BOTTOM HOUSING...

Page 13: ...ACEMENT NOTES ________________________________________________________________________ I BALLAST I 1 REMOVE BALLAST FROM POWER SUPPLY BOARD REMOVE BATTERY COVER AND BATTERY FROM HANDLE GENTLY PULL BAL...

Page 14: ...ION 12 END PRINTER CHARGER KEYPAD REPLACEMENT NOTES ________________________________________________________________________ ___________________________________________________________________________...

Page 15: ...s shown in the figure above except the two screws marked with arrows These two screws hold the PCB to the lower housing Remove them if the PCB is to be removed after the top panel is off NOTE USE 3 16...

Page 16: ...ACE PRINTER K 5 ATTACH REPLACEMENT PRINTER TO PAPER WELL PCB SLIDE REPLACEMENT PRINTER UNDER GEAR COVER AND ALIGN SCREW HOLES IN PRINTER WITH HOLES IN PCB PAPER WELL SECURE PRINTER TO PCB BOARD ASSEMB...

Page 17: ...arged battery Test 1 Leaks 1 1 Open MT2 and remove battery 1 2 Momentarily apply 7 2 VDC across valve coil to latch valve closed See FIG 1 2 for polarity 1 3 Connect Pressure Box T 5657 pressure tube...

Page 18: ...cc cavity onto the probe tip 3 2 Take Tympanogram of cavity by depressing and releasing black test button 3 3 Observe for noise Repeat 5 times 3 4 Observe the number of rows above baseline None is ide...

Page 19: ...tment negative contacts as shown in FIG 4 1 below 4 3 Connect Milliammeter Negative lead to positive side of the battery as per FIG 4 1 below 4 4 Connect Milliammeter Positive lead to the positive spr...

Page 20: ...e possible cause of failure is shorted capacitor C11 5 5 Leave all connections as they are for the next test Test 6 Active Current Drain 6 1 Depress and hold black center push button to activate MT2 6...

Page 21: ...registers by moving the cursor to each register and typing in 00 Data will turn yellow Press ENTER after AC AD and AE data is erased 7 7 Unit will Update registers then Tools Menu will be automatical...

Page 22: ...are touching each other or the front housing If they are this will cause noise in the unit B Check to see if the silastic tubing from the front housing to the ballast is pinched C See if the bottom fl...

Page 23: ...ace or 2nd pixel up in the LCD displayconstantly DimLCDdisplay Checkpowersupplies 5volts Defective PS PCB DefectiveLCDdisplay Replace Keypadproblem Makesurethattheflexispluggedintothekeypadproperly Ch...

Page 24: ...on MCU board 33uf Defective valve Replace valve Defective seating of Reseat speaker microphone probe tip component or transducer Defective probe tip Replace probe tip Split or frayed silicone tube s...

Page 25: ...t Loosen pulley set screw Defective drive belt Replace drive belt Defective battery Replace battery Black Red wire reversed Restore black red wire in back of Tymp handle in back of Tymp handle Shorted...

Page 26: ...int Head Shorted Replace Print Head Poor cable connection P302 Reseat cable Defective U201 Replace U201 Defective Print Head Replace Print Head Defective U201 portions of Replace U201 print missing Po...

Page 27: ...D TO TAKE THE PLACE OF CALIBRATION SERVICE HANDLE CODE READS LOW BATT THE BATTERY MAY BE DISCHARGED FROM EXTENDED STORAGE 60 DAYS AND SIMPLY NEEDS RECHARGING IF THE BATTERY DOES NOT RECHARGE OVERNIGHT...

Page 28: ...A REINSERT HANDLE NO DATA NOTHING IN MEMORY COMPUTER INTERFACE SWITCH 4 IS SET ON BOTTOM OF PRINTER FOR POSSIBLE CAUSES AND SOLUTIONS FOR THESE MESSAGES REFER TO PRINTER FUNCTION MESSAGES TABLE 2 ON P...

Page 29: ...nc Skaneateles Falls NY 13153 All rights reserved This document is the property of Welch Allyn Inc The contents are considered confi dential and proprietary This document can only be duplicated or dis...

Page 30: ...cess 31 2 1 Background Information 31 2 2 Error Handling 31 2 3 Calvin res File 32 2 4 Log File 32 2 5 Potentiometer Setting Routine 32 3 Operational Procedure 33 4 Menu Options 9 5 Calibration Signat...

Page 31: ...alibrate microphone gain pot o calibrate admittance offset pot o calibration pressure offset pot o calibration pressure gain pot o motor speed table calibration Additional functional testing is inters...

Page 32: ...erial number the final pot setting with result values and total test time per unit This log should be very helpful for troubleshooting 2 5 Potentiometer Setting Routine Several potentiometers pots are...

Page 33: ...ish communications with the handle This step will verify that the handle is properly seated in the base and that the handle is alive Note that a communications failure can occur at any point during ca...

Page 34: ...perator is instructed to place the pressure tube on the end of the handle tip Pres sure is set to a positive pressure and the pressure is read After a time delay the pres sure is reread and the result...

Page 35: ...Tone generated but not at 85 dB Bad speaker gain or admittance gain pots MicGain Pot cannot be adjusted Bad microphone gain pot Harmonic Distortion Check This calibration step will measure the amount...

Page 36: ...value of the admittance gain pot is read to determine if it matches the value it should be for the cavity set on the tip Errors Corrections Volume is incorrect Redo sound cal Calibrate Motor Speed Th...

Page 37: ...day calibration of the B K 2231 sound meter A 124 dB piston phone is needed to do this adjustment Tools Menu I2E2PROM Editor Invokes an editor which allows the I2E2PROM contents of the handle to be in...

Page 38: ...orking correctly HandlePressureMenu Pressure Up Sends a pressure up command to the handle Pressure Down Sends a pressure down command to the handle and sums the pres sure sweep rate table and displays...

Page 39: ...on is marked in white Locations which have been changed are displayed with yellow Prom File Menu This menu allows you to load default values in to PROM from a file or to save PROM values to a file All...

Page 40: ...register at AC hex is a Slave processor history register If a fatal error occurs with the Slave a bit is set in this register AD hex is the Master status register if there is a problem with the Maste...

Page 41: ...eroing each location C I Read Pressure Returns current pressure reading C J Read Microphone Returns current value at mic A D C K Start Tymp Runs a Tymp C L Set LCD Pattern Displays a pattern to the LC...

Page 42: ...00011 88 58 01011000 173 ad 10101101 4 04 00000100 89 59 01011001 174 ae 10101110 5 05 00000101 90 5a 01011010 175 af 10101111 6 06 00000110 91 5b 01011011 176 b0 10110000 7 07 00000111 92 5c 01011100...

Page 43: ...3a 00111010 143 8f 10001111 228 e4 11100100 59 3b 00111011 144 90 10010000 229 e5 11100101 60 3c 00111100 145 91 10010001 230 e6 11100110 61 3d 00111101 146 92 10010010 231 e7 11100111 62 3e 00111110...

Page 44: ...or both of the error registers For example assume the Historical Master Error Register contains a 0a The binary equivalent is 00001010 Notice now that there are two digits that are set to one Matchin...

Page 45: ...or 40 X1XXXXXX 3 2 1 Description ThiserrorresultsfromtheRAMmemoryinsidetheSlavemicrocontrollertestingbad ThismemoryisusedtotemporarilystoreprograminformationwhiletheSlaveisoperating 3 2 2 Suggestions...

Page 46: ...ck on 3 5 Home Pump Error 08 XXXX1XXX 3 5 1 Description An error has occurred in which the optical sensor has not detected the pump flag in the proper position after a Home Pump command has been attem...

Page 47: ...me of design An error will only be registered during the auto zeroing of the pressure transducer before a pressure up occurs 4 5 2 Suggestions Test the pressure transducer section of the circuitry on...

Page 48: ...rly Investigate the error indicated in the Historical Slave Error Register 4 8 RAM Error 01 XXXXXXX1 4 8 1 Description This error results from the RAM memory inside the Master microcontroller testing...

Page 49: ...ering down and then powering up Verify that both microcontrollers pins all make good electrical contact to the PCB 5 3 I2C Bus Error 00 00000000 5 3 1 Description The I2C bus is a two wire communicati...

Page 50: ...s SUPPLIES Item W A Part Loctite Black Max adhesive M 30341 Solder rosin core 020 63SN 37PB M 31446 Cotton swabs Desoldering wick Note The Calvin Calibration System is custom built from the items on t...

Page 51: ...omponents Calvin Component 20 Edmund Scientific Co Holder Base Plate A365 Mounting of components Calvin Component 21 Edmund Scientific Co Tilt Platform A36 607 Mounting of components Calvin Component...

Page 52: ...yn service part numbers and material numbers appearing in this manual are for the purpose of familiarizing new technicians with the Welch Allyn parts numbering system Order replacement parts as always...

Page 53: ...P 1 23641 REPAIR 106104 16 DRIVE BELT 1 23641 REPAIR 236330 506 MCU BOARD 1 23641 REPAIR 230035 2 SPEAKER 1 23641 REPAIR 236045 MICROPHONE 1 23641 REPAIR 236303 502 LCD DISPLAY 1 23641 REPAIR 236171 5...

Page 54: ...ST BLOW SMD 250V TR 2 71171 REPAIR 761013 501 PRINTER COVER CUTTER ASSY 1 71171 REPAIR 761050 1 SPINDLE PAPER ROLL 1 71171 REPAIR 761076 0 POWER CORD DETACH DOM JAP 1 71171 REPAIR 761117 THERMAL PAPER...

Page 55: ...MT2 DRAWINGS NOS 236300 236302 236304 236305 236308 236330 236340 711700 MICRO TYMP 2 HARDWARE BLOCK DIAGRAM...

Page 56: ......

Page 57: ......

Page 58: ......

Page 59: ......

Page 60: ......

Page 61: ......

Page 62: ......

Page 63: ......

Page 64: ......

Page 65: ...SECTION 11 A 02727 PROCESS SHEET EXCERPTS FOR 23641 MICROTYMP 2 HANDLE TESTS...

Page 66: ...SECTION 12 A 02728 Process Sheet excerpts for 71171 71172 71174 71176 71179 Micro Tymp 2 Printer Charger tests...

Reviews:

No comments

Related manuals for Micro Tymp 2

Brand: MacDon Pages: 89

Brand: Yates Pages: 2

Brand: JAC Pages: 100

Brand: NEC Pages: 54

Brand: 1010music Pages: 2

Brand: 1010music Pages: 4

Brand: YATEK Pages: 72

Brand: Bante Instruments Pages: 6

Brand: Parker Pages: 39

Brand: Gardner Bender Pages: 8

Brand: NARIKA Pages: 2

Brand: Jacto Pages: 12

Brand: Radial Engineering Pages: 16

Brand: R&S Pages: 61

Brand: Samson Pages: 2

Sonorex Super RK 31

Brand: BANDELIN Pages: 21

BTL7-A/E501-M Series

Brand: Balluff Pages: 194

Brand: B.Pro Pages: 48

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands