GSi TYMPSTAR Series Service Manual
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GSi TYMPSTAR Series Service Manual

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Part Number 2000--0110 Rev B

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  • Page 1 Part Number 2000--0110 Rev B...
  • Page 2 Title: GSI TympStar Versions 1 and 2 Middle-Ear Analyzer Service Manual Date: January, 2011 Copyright © 2011 Grason-Stadler. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without the prior written permission of Grason-Stadler. The information in this publication is proprietary to Grason-Stadler.
  • Page 3 Warranty for the GSI TympStar Versions 1 & 2 Grason-Stadler warrants the GSI TympStar Versions 1 and 2 to be free of original defects in material and workmanship and to perform in accordance with manufacturer’s specifications for a period of one year from the date of purchase.
  • Page 4 TympStar Version 2: 2000-0120 Service personnel Repair and/or bench testing of the GSI TympStar Version 1 and Version 2 instruments should be performed only by trained personnel. The following instructions are provided primarily for use by persons who are skilled in the repair of electronic equipment.
  • Page 5 Environmental ......................2-6 Warm-Up Time......................2-6 Calibration Stability ....................2-7 Connectors ....................... 2-7 Electrical ........................2-8 Supplied Accessories ....................2-9 Mechanical ....................... 2-9 Materials of manufacture ..................2-9 GSI TympStar Version 1 and Version 2 Service Manual Contents - 1...

  • Page 6: Table Of Contents

    Table of Contents Calibration requirements ..................2-9 Version 2 Specifications ..........2-10 Standards ....................... 2-10 Sensitivity ranges ....................2-11 Temporal Latency in ARLT Mode................2-12 Multi Frequency ..................... 2-12 Probe Signal (Sinusoidal) ..................2-12 Pneumatic System ....................2-13 Acoustic Reflex Activating (Stimulus) Signal ............2-13 Click Stimulus ......................
  • Page 7 Automatic Auto Zero ................... 3-18 Mark Threshold ....................3-19 Reflex Threshold Seeking .................. 3-19 Reflex decay ......................3-20 Eustachian tube function ..................3-20 Pressure Swallow Test (intact TM) ..............3-20 GSI TympStar Version 1 and Version 2 Service Manual Contents - 3...
  • Page 8 Contra phone......................4-5 Cal/Normal switch ............4-6 Cal Option DIP switch ............4-6 Switch 1: Factory use only ................... 4-7 Switch 2: GSI/custom RTL transducer calibration..........4-7 Switch 3: Unused ....................4-7 Switch 4: Unused ....................4-7 Switch 5: Unused ....................4-7 Switch 6: Diagnostic mode ...................
  • Page 9 TympStar Version 1 Calibration........4-33 Version 1 Calibration Procedures........4-34 Self-Cal ........................4-34 Loading default data ....................4-35 Contra, Ipsi and Probe tone calibration ............... 4-36 Contra SPL Cal ....................4-36 GSI TympStar Version 1 and Version 2 Service Manual Contents - 5...
  • Page 10 Table of Contents Ipsi SPL Cal ....................... 4-37 Probe Tone SPL Cal....................4-38 Y Cal........................4-39 Altitude Cal ......................4-39 Pressure Cal ......................4-41 Set ambient ......................4-42 Set -600/400 ......................4-44 Leak rate ......................4-45 Verify Cal ........................ 4-47 Diagnostic.......................
  • Page 11 Main() ........................7-1 Set_op_mode() ......................7-3 Tymp_sk() ......................... 7-4 Interconnection diagram ..........7-5 Block diagram description of assemblies ............. 7-6 LCD assembly ..................... 7-6 Printer........................7-6 Probe ........................7-6 GSI TympStar Version 1 and Version 2 Service Manual Contents - 7...
  • Page 12 Table of Contents Pump ........................7-6 Digital board ......................7-7 PC104 board ......................7-7 Analog board ......................7-7 Power supply board ....................7-8 Printer board ......................7-8 System assembly diagram ..........7-9 Troubleshooting ......8-1 System power supply measurements ......8-1 Power Supply (J2)....................
  • Page 13 Introduction General The GSI TympStar Version 1 and Version 2 Middle-Ear Analyzers are techni- cally advanced, computer-based admittance instruments designed to be used in clinical or research settings. The TympStar builds on the sophistication, functionality and flexibility of the GSI 33, offering unparalleled testing capa- bilities.
  • Page 14 Chapter 1 Version 1 Admittance (Y) may be measured with a probe tone frequency of 226 Hz. The extensive battery of test mode choices include the following: • Diagnostic Tympanometry • Acoustic Reflex Threshold and Decay Measurements • Eustachian-Tube Function Testing (both intact and perforated eardrums) •...
  • Page 15 • Internal memory for storing up to 26 test results • Data export to an external PC via RS232 serial interface Used only in TympStar Version 2 GSI TympStar Version 1 and Version 2 Service Manual 1 - 3...
  • Page 16 A wide variety of both standard and special sized eartips are supplied with the GSI TympStar to hermetically seal the ear canal. In addition, a set of screening eartips is provided for screening tymp and reflex tests.
  • Page 17 For example, pressing the TYMP hardkey causes the Tymp Diagnostic screen to be Tymp hardkey displayed. Tymp Diagnostic screen Tymp parameter menu GSI TympStar Version 1 and Version 2 Service Manual 1 - 5...
  • Page 18 Tymp Diagnostic parameter menus diagrammed below. These menus are from the Version 1, however, the process is the same in both versions. GSI default softkey selections are circled on menu diagrams. The first level of parameter menu selections includes AUTO SEQUENCE, P-RANGE, START, GRADIENT, EAR and MORE.
  • Page 19 GSI default parameters are circled on daPa eter settings menu structure diagrams shown -600 -400 -200 +200 +400 MORE throughout the remainder of this manual. GSI default value -500 -300 +300 MORE GSI TympStar Version 1 and Version 2 Service Manual 1 - 7...
  • Page 20 Chapter 1 1 - 8 Grason-Stadler...

  • Page 21: Standards

    TympStar Version 2 instruments. The specifications for each instrument can also be found in its corresponding Reference Instruction Manual. Version 1 Specifications Standards The GSI TympStar Version 1 meets or exceeds the following standards and specifications for aural acoustic admittance instruments: IEC 1027 1991-03 ANSI S3.39-1987 ANSI S3.6-1996...

  • Page 22: Sensitivity Ranges

    Chapter 2 Sensitivity ranges The following admittance measurements give maximum range at 226 Hz, Y in ml. Table 1: Tymp Mode Frequency Digital Read-Out Graphical Including Cursor Display 226 Hz -7.0 to +7.0 -1.0 to +7.0 Accuracy at 226Hz: 0.1 ml or 5%, whichever is greater. Table 2: Reflex Mode Frequency Digital Read-Out...

  • Page 23: Pneumatic System

    Wilber, Barbara A. Krueger and Mead C. Killion, J. Acoustic Soc. Am. Suppl. 1, Vol. 81 Spring 1987. GSI determined the transfer data from an IEC 711 coupler to an ANSI HA-1 coupler. Using this data, the reference threshold values were deter- mined for both the Ipsi and Contra insert earphones for calibration in an ANSI HA-1 2cc coupler.
  • Page 24 Chapter 2 Intensity levels are reduced as a function of volume at a rate of 1 dB SPL for each .1 ml. Intensity reduction begins at 1.2 ml. Table 3: Upper limit of HL range in Reflex Threshold Mode Lower limit of HL range for all stimulus signals (35 dB HL). Hearing Level Increment: 5.0 dB Hearing Level Increment Accuracy:...

  • Page 25: Stimulus

    115 msec Stimulus on time 44 msec Stimulus off time 53 msec Rise and fall time 18 msec Temporal Spec. Accuracy: ±10% or 5 msec, whichever is greater GSI TympStar Version 1 and Version 2 Service Manual 2 - 5...

  • Page 26: Environmental

    Chapter 2 Environmental The GSI TympStar Version 1 meets ANSI S3.6-1996 Standards for temperature and humidity specifications, and it meets the UL 2601-1, CSA 22.2 and IEC60601- 1 standards for safety. Temperature: Storage: -40 degrees C to +75 degrees C...

  • Page 27: Calibration Stability

    Specifications Calibration Stability All GSI TympStar Version 1 specifications are met over the range of specified power line, temperature and humidity variations. Power Line: Voltage Variation: ±10% Frequency Variation: ± 5% Power line short term variation which affects the performance of the instru- ment will turn off all probe and stimulus signals.

  • Page 28: Electrical

    Chapter 2 Standard PS-2 keyboard port for external Keyboard. Standard parallel printer port for external printer. Electrical The following apply to the TympStar system: 1) Class 1 Medical Equipment 2) Type B Medical Equipment 3) IPXO ingress of water (ordinary equipment) 4) Equipment not suitable for use in the presence of flammable anesthetic mixture with air or with oxygen or nitrous oxide.

  • Page 29: Suppliedaccessories

    User Manual GSI Part # 2000-0100 Quick Reference Guide GSI Part # 2000-0108 Printer paper (2 rolls) for orders including printer GSI Part # 1700-9619 Spare set of probe tubing GSI Part # 2000-9617 Probe mount - shoulder GSI Part # 1700-9646...
  • Page 30 Chapter 2 Version 2 Specifications Standards The GSI TympStar Version 2 meets or exceeds the following standards and speci- fications for aural acoustic admittance instruments: IEC 1027 1991-03 ANSI S3.39-1987 ANSI S3.6-1996 ANSI S3.7-1995 IEC 645-1 1992 IEC 126-1973 (also BS 6111-1981)
  • Page 31 -21 to + 21 -0.48 to +0.80 +0.48 to -0.80 1000 Hz -30 to +30 -0.64 to +0.80 +0.64 to -0.80 Accuracy: 226 Hz is 0.02 ml or 5%,whichever is greater. GSI TympStar Version 1 and Version 2 Service Manual 2 - 11...
  • Page 32 Chapter 2 Temporal Latency in InitialLatencyLi: < 5 ± 5 msec. ARLT Mode (From signal onset to 10% ofAmplitude) Terminal Latency Lt: < 5 ± 5 msec (From signal offset to 90% of Amplitude) Rise Time Tr: <30 ±5 msec. (From 10% to 90% of Amplitude) Fall Time Tt: <25 ±5 msec.
  • Page 33 Wilber, Barbara A. Krueger and Mead C. Killion, J. Acoustic Soc. Am. Suppl. 1, Vol. 81 Spring 1987. GSI determined the transfer data from an IEC 711 coupler to an ANSI HA-1 coupler. Using this data, the reference threshold values were deter- mined for both the Ipsi and Contra insert earphones for calibration in an ANSI HA-1 2cc coupler.
  • Page 34 Chapter 2 Intensity levels are reduced as a function of volume at a rate of 1 dB SPL for each .1 ml. Intensity reduction begins at 1.2 ml. Table 3A: Upper limit of HL range in Reflex Threshold Mode PureTone Stimulus (Hz) Noise Stimulus Other Stimulus Probe...
  • Page 35 (dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 1000 2000 4000 Versus l Ipsi Actuator If (Ipsi facilitator) (Hz) (HL) 500Hz 1000 2000 4000 6000 EXT(SPL) (dbHL) (dbHL) (dbHL) (dbHL) (dbHL) (dbSPL) 1000 2000 4000 GSI TympStar Version 1 and Version 2 Service Manual 2 - 15...
  • Page 36 Chapter 2 Click Stimulus Guaranteed Peak Equivalent SPL Levels: Ipsi: 110 dB SPL Contra: 120 dB SPL Peak hold SPL to peak equivalent SPL transfer data. (Peak hold SPL = peak equivalent SPL + transfer data) Ipsi: 8.5 dB Contra: 5.5 dB ClickRate Range: 50-300 Pulse/sec.
  • Page 37 Temporal Spec. Accuracy: ±10% or 5 msec, whichever is greater Environmental The GSI TympStar Version 2 meets ANSI S3.6-1996 (Rl986) Standards for tem- perature and humidity specifications, and it meets the UL 2601 Standards in terms of shock hazards and leakage.
  • Page 38 Chapter 2 Calibration Stability All GSITympStarVersion 2 specifications are met over the range of specified power line, temperature and humidity variations. Power Line: Voltage Variation: ±10% Frequency Variation: ± 5% Power line short term variation which affects the performance of the instru- ment will turn off all probe and stimulus signals.
  • Page 39 5) Mode of operation - continuous Input Voltage: 100 – 240 VAC Input Frequency: 50 – 60 Hz Input Current: 3.2 A maximum Power Consumption: 120W maximum GSI TympStar Version 1 and Version 2 Service Manual 2 - 19...

  • Page 40: Calibration Requirements

    Eartips: Kraton 3226 Tubing: Vinyl and Polyurethane GSI recommends quarterly calibration checks for the GSI TympStar along with Calibration annual certification. ASHA requires quarterly electro-acoustic calibration checks requirements and annual electro-acoustic calibration. It is good practice to perform daily biologic checks.

  • Page 41: Front Panel Controls

    A rotary pressure control is provided to change or fine-tune pressure within the ear canal. LCD housing Softkey Front panel Pressure control Hardkey GSI TympStar Version 1 and Version 2 Service Manual 3 - 1...

  • Page 42: Hardkeys

    (intact eardrum) test to be automatically initialized. Special Causes GSI TympStar to initialize to GSI (or operator programmed) default criteria for reflex decay test. Page Allows operator to recall and display tests in memory or in progress.

  • Page 43: Start

    The push-buttons located directly under the LCD are the only softkeys. Their functions are displayed on the LCD and change in support of the current test activities. Test parameters Test parameter softkeys GSI TympStar Version 1 and Version 2 Service Manual 3 - 3...

  • Page 44: Menus And Lcd Screens

    For example, press- ing the TYMPhardkey causes the Tymp Diagnostic screen to be displayed. GSI-developed default parameters for each selected test are displayed on the lower portion of the LCD above the six softkeys. Alternative choices may be made by pressing the appropriate test parameter softkey.

  • Page 45: Program Modes

    The MORE softkey is used to toggle between the top and lower levels of menus while the test screen portion above the softkeys remains unchanged. NOTE The GSI default parameters are circled on the menu structure diagrams. Program modes All test modes allow the user to individually program a unique set of default test parameters.

  • Page 46: Probe Lights

    Chapter 3 Probe lights Lights are provided on the probe to indicate test status in the following manner: • Solid Green = Test In Progress • Solid Amber = Occlusion • Blinking Amber = Leak • Blinking Green = OK to begin a test Probe lights LCD screen The liquid crystal display (LCD) shows axes for the graphic display of the...

  • Page 47: Erasing And Clearing Test Data

    PAGE hardkey, then scrolling through pages using up/down arrows. Each screen of data equals a page. GSI TympStar Version 1 and Version 2 Service Manual 3 - 7...

  • Page 48: Version 2 Cursor

    USED IN THE PATIENT VICINITY MUST BE POWERED BYAN ISO- LATED POWER SOURCE TO MAINTAIN THE ELECTRICAL SAFETY OF THE OVERALL SYSTEM. The isolated power source can be purchased directly from GSI, or elsewhere when approved for use by GSI. Grason-Stadler...

  • Page 49: Setting The Printer Parameters

    MORE softkey to display the PRINT FORMAT softkey se- lection. 3) Press the PRINT FORMAT softkey, and then the MORE softkey to display the EXTERNAL PRINTER SETUP softkey selection. GSI TympStar Version 1 and Version 2 Service Manual 3 - 9...

  • Page 50: Left Column Printout Data

    Chapter 3 4) Press the EXTERNAL PRINTER SETUP softkey to display the External Printer Setup Menu. 5) Press the LEFT COLUMN SETTING softkey of the External Printer Setup Left column printout data Menu to set the left column of the printed data to the left or right ear. Color or black and 6) Press the PRINT TYPE softkey of the External Printer Setup Menu to set the white...

  • Page 51: Changing Instrument Versions

    TURN hardkey to display the ETF sub- menu. INTACT PERF INSTRUMENT PROGRAM OPTIONS MODE 2) Press the INSTRUMENT OPTIONS softkey, then the MORE softkey to dis- play the VERSION softkey selection. GSI TympStar Version 1 and Version 2 Service Manual 3 - 11...

  • Page 52: Switching To V1 Temporarily

    Chapter 3 3) Press the VERSION softkey to display the Version Menu. NOTE To return to the Instrument Options menu with no version switching action taken, press the RETURN hardkey from the Version menu. Switching to V1 1) Press the V1 TEMPORARY softkey to change the instrument to V1 func- temporarily tionality temporarily.

  • Page 53: Changing From A Version 1 To A Version 2

    ETF sub-menu. 2) Press the INSTRUMENT OPTIONS INTACT PERF INSTRUMENT PROGRAM OPTIONS MODE softkey, then the MORE softkey to display the VERSION softkey selection. GSI TympStar Version 1 and Version 2 Service Manual 3 - 13...

  • Page 54: Obtaining A License Code

    ENTER THE LICENSE KEY CODE HERE: THEN PRESS THE DATATRANSFER KEY 5) Press the PRINT hardkey to print out the lock code. Contact your GSI repre- sentative with the lock code. If a V2 upgrade is purchased, you will be pro- vided with a license key code and V2 probe.

  • Page 55: Replacing The V1 Probe With A V2 Probe

    4) Pull the connector straight out and away from the side of the TympStar chassis. Reverse this sequence to connect the new Version 2 probe to the TympStar. Con- tact your GSI representative to have the removed probe returned to GSI. 5) Connect an external keyboard, power the instrument and return to the VERSION sceen.

  • Page 56: Switching To Version 2 Software

    YOU MUST OBTAIN A LICENSE KEY TO LAUNCH V2 TYMPSTAR CONTACTYOUR GSI REPRESENTATIVE WITHTHE FOLLOWING CODE: 0A2B3C4E5D (example of lock code) YOUR GSI REPRESENTATIVE WILL PROVIDE YOU WITH A LICENSE KEY CODE. ENTER THE LICENSE KEY CODE HERE: THEN PRESS THE DATA TRANSFER KEY Using an external keyboard, type in the license key code as indicated by the on-screen instructions.

  • Page 57: Version 1 Test Procedures

    7) Press the PAGE hardkey to view test results. 8) Press the PRINT hardkey while in the PAGE mode for printed tests. MANUAL will appear on the printout indicating a manual test. GSI TympStar Version 1 and Version 2 Service Manual 3 - 17...

  • Page 58: Tymp Screening

    Chapter 3 Tymp screening 1) Enter test mode by pressing TYMP followed by RETURN. Press the SCREEN softkey. Test will automatically start when a seal is detected. 2) Default test parameters are displayed above softkeys on the LCD. 3) Attach the probe box to the velcro strip on the shoulder probe mount or to the wristband probe mount.

  • Page 59: Mark Threshold

    7) Select the CONTINUE softkey to allow reflex tracing to continue on the next line on the reflex screen. NOTE MANUAL REFLEX testing may be performed by pressing MANUAL and viewing responses to stimuli presentations on the compliance meter. GSI TympStar Version 1 and Version 2 Service Manual 3 - 19...

  • Page 60: Reflex Decay

    Chapter 3 Reflex decay 1) Select test mode by pressing SPECIAL hardkey. Default test parameters are displayed above softkeys on the LCD. NOTE Alternative sensitivities for displayed reflex response may be selected by pressing ml SCALE softkey. 2) Dotted vertical lines are displayed above the X-axis of each graph marking 5 sec.

  • Page 61: Auto Sequence Testing

    YES/NO softkey to select or de-select the stimulus. 8) Press the RETURN hardkey twice and press the STORE softkey to store test selections in memory. GSI TympStar Version 1 and Version 2 Service Manual 3 - 21...

  • Page 62: Version 2 Test Procedures

    Chapter 3 Version 2 test procedures The following TympStar Version 2 test procedures are summarized. Compre- hensive procedures are provided in the TympStar Version 2 User Manual. Tymp diagnostic 1) Select test mode by turning the POWER ON, or by pressing the TYMP hardkey.

  • Page 63: Manual Tymp

    Blinking Green OK To Begin A Test 7) The test will start automatically when a seal is detected. Screening IPSI Reflex test at 1 kHz will follow tymp. GSI TympStar Version 1 and Version 2 Service Manual 3 - 23...

  • Page 64: Reflex Threshold

    Chapter 3 8) A“Test Complete Remove Probe” message will appear on the display when the test is complete. 9) View test results on the graphic display area along with summary data at the right of the pressure and compliance meters. 1) Select test mode by pressing REFLEX.

  • Page 65: Automatic Auto Zero

    7) Select the CONTINUE softkey to allow reflex tracing to continue on the next line on the reflex screen. NOTE MANUAL REFLEX testing may be performed by pressing MANUAL and viewing responses to stimuli presentations on the compliance meter. GSI TympStar Version 1 and Version 2 Service Manual 3 - 25...

  • Page 66: Reflex Decay

    Chapter 3 Reflex decay 1) Select test mode by pressing SPECIAL. 2) Default test parameters are displayed above softkeys on the LCD. A) Selectable Probe Tone Frequencies- 226 Hz, 678 Hz. B) Selectable Admittance Components- Y, B, G. C) Alternative sensitivities for displayed reflex response may be selected by pressing the ml SCALE softkey.

  • Page 67: Acoustic Reflex Sensitization (A.r. Sensi)

    CONTRA (C). Use the STIMULUS EAR softkey to press the desired Combination- CfIa, CfCa, IfCa, Ifia. 5) To select the facilitator stimulus and intensity, press the FACILITATOR softkey. GSI TympStar Version 1 and Version 2 Service Manual 3 - 27...

  • Page 68: Eustachian Tube Function

    Chapter 3 A) Use the STIMULUS up and down arrows to select the desired high frequency stimulus. B) Use the INTENSITY up and down arrows to set the intensity level. Try 3 to 4 dB below threshold level for selected stimulus. C) Press EXIT.

  • Page 69: Multiple Frequency Tympanometry (Multiple Hz)

    TEST 1 of the test series are displayed above softkeys on the LCD. A) The GSI TympStar automatically runs a 226 Hz Y tymp to determine the peak pressure value for the second probe frequency sweep. B) The ADMITTANCE softkey indicates which component is measured as a function of probe frequency at the start and peak pressures (B is the best component for this test).

  • Page 70: Auto Sequence Testing

    Chapter 3 9) A cursor line approximates the resonance point of the ear along Hz axis. A) CURSOR left and right arrow softkeys may be used to specify a different Hz point for DY, B, or G values and Dq . Press SET Hz softkey to record new value.

  • Page 71: Programming Auto Sequence Tests

    YES/NO softkey to select or de-select the stimulus. 8) Press the RETURN hardkey twice and press the STORE softkey to store test selections in memory. GSI TympStar Version 1 and Version 2 Service Manual 3 - 31...
  • Page 72 Chapter 3 Grason-Stadler 3 - 32...

  • Page 73: Calibration

    TympStar’s LCD dis- play. The display will show current measurement parameters and give in- structions for completing the calibration. Cal Options switch Calibration Calibration parameters instructions GSI TympStar Version 1 and Version 2 Service Manual 4 - 1...

  • Page 74: When To Calibrate The Tympstar

    GSI recommends quarterly calibration checks for the GSI TympStar along with annual certification. ASHA requires quarterly electro-acoustic calibration checks and annual electro-acoustic calibration. It is good practice to perform daily biologic checks.

  • Page 75: Routine Calibration Sequence

    (under the SPECIAL hardkey) and verify that Ipsi and Contra sound pressure levels are within the specified accuracy. Attenuator linearity and distortion can also be checked in this mode. GSI TympStar Version 1 and Version 2 Service Manual 4 - 3...

  • Page 76: Preparing For Calibration

    Chapter 4 Preparing for calibration WARNING It will be necessary to perform tasks within the TympStar enclosure while power is applied to the instrument. Do not touch electrical circuitry, wir- ing or complements. Voltages are present inside the enclosure that can cause severe personal injury or death! CAUTION Verify that the probe tip is clean and the probe tubes are clean and un-...

  • Page 77: Contra Phone

    Step 3 Use isopropyl alcohol and a clean tis- sue or Q-tip to clean the two jacks in the Contra phone body, and the two Contra phone cable plugs. GSI TympStar Version 1 and Version 2 Service Manual 4 - 5...

  • Page 78: Cal/Normal Switch

    Chapter 4 Cal/Normal switch The Cal/Normal switch is located on the digital board and is used to gain access to the calibration mode. Ac- cess to the switch is gained by remov- NORMAL M o d e ing the three Philips retaining screws from the bottom front edge of the TympStar case, lifting the front panel and locking the panel in the open...

  • Page 79: Switch 1: Factory Use Only

    The TARG SPL softkeys allow the reference threshold values transducer calibra- (RTL) and output levels to be offset from the default GSI values by a maximum of tion plus or minus 10 dB. If the TARG SPL softkeys are pressed and released, the output level and LCD indicated value will change by 0.5 dB.

  • Page 80: Hardware Diagnostics

    Chapter 4 Switch 6: Diagnostic This position will activate the diagnostic portion of the Cal mode when the Cal/ mode Normal switch is in the Cal position. The Diagnostic Mode Screen will be dis- played. Four diagnostic functions are displayed above softkeys at the bottom of the screen. These include the following: •...

  • Page 81: Dac Levels

    DAC LEVEL function. Pressing the DAC LEVEL softkey displays the DAC level menu above softkeys at the bot- tom of the LCD. GSI TympStar Version 1 and Version 2 Service Manual 4 - 9...
  • Page 82 Chapter 4 The gain for the desired circuit can be adjusted by pressing the corresponding softkey. The selected circuit will be indicated in the left column of the DAC LEVELS portion of the LCD screen with its level shown in the right column. The example below shows the contra circuit selected with a level of 255.

  • Page 83: Ipsi Source

    CONTRA list. The desired source can be selected by scrolling through the list using the UP and DOWN No CAPS softkeys. This example shows the 1K Hz source selected. GSI TympStar Version 1 and Version 2 Service Manual 4 - 11...

  • Page 84: Contra On/Off

    Chapter 4 CONTRA ON/OFF Pressing the EXIT softkey displays the Hardware Diagnostic Mode menu at the bottom of the screen. The CONTRA output channel is toggled ON or OFF by press- ing the CONTRA ON/OFF softkey. MUX INPUTS The desired PRESSURE MUX or MIC MUX input can be selected for measurement by pressing the MUX INPUTS softkey.

  • Page 85: Probe/Filer

    Selected probe tones are displayed in the PROBE TONE list in the center-left of the LCD, and can be changed for standard and multi-frequency tones by pressing the PROBE TONE UP and DOWN NO CAPS. GSI TympStar Version 1 and Version 2 Service Manual 4 - 13...

  • Page 86: Routing

    Chapter 4 The probe tone can be toggled between STANDARD and MULTI-FREQ by press- ing the STANDARD/MF softkey. This example shows a standard probe tone of 1000 Hz selected. Selected input filters are displayed in the FILTER list in the center of the LCD, and can be changed by pressing the FILTER MODE UP and DOWN NO CAPS.

  • Page 87: Probe On/Off

    RS-232 port on or off. Data is sent to the port, looped back and compared to the original output. Good and bad data counts are accumulated until the test is stopped by pressing the RS-232 INT ON/OFF softkey again. GSI TympStar Version 1 and Version 2 Service Manual 4 - 15...

  • Page 88: Parallel On/Off

    Chapter 4 RS-232 EXT. ON/OFF Pressing the RS-232 EXT ON/OFF softkey toggles the loopback test for the external port on or off. Loopback test- ing of the external RS-232 port requires the use of a male RS-232 loopback con- nector. The connector wiring is shown here.

  • Page 89: Misc. Diag

    DIAG menu. Pressing the MISC. DIAG softkey displays the Miscellaneous Diagnostic Mode screen. The MISC. DIAG menu is displayed above the softkeys at the bottom of the LCD. GSI TympStar Version 1 and Version 2 Service Manual 4 - 17...

  • Page 90: Calendar Clock

    Chapter 4 CALENDAR CLOCK Pressing the CALENDAR CLOCK softkey displays the Calendar Clock screen. Current date and time settings are shown at the center of the screen, and the Calendar Clock menu is displayed above the softkeys at the bottom. Pressing the SET softkey displays the Set Date/Time menu at the bottom of the LCD.
  • Page 91 Pressing the SET softkey stores the current date or time settings in system memory, and returns to the Set Date/Time menu. Pressing the RETURN hardkey, then the EXIT softkey displays the MISCELLA- NEOUS Diagnostic menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 19...

  • Page 92: Display & Leds

    Chapter 4 DISPLAY & LEDS Pressing the DISPLAY & LEDS softkey starts an automatic test sequence that displays decreasing size checkerboard patterns on the LCD and flashes the probe box LEDs. The LCD pattern automatically progresses through the following sequence: •...

  • Page 93: Keys

    Releasing the key changes the display to indicate that the hardkey or softkey was released. Pressing the EXIT softkey three times in rapid succession ends the test and displays the Miscellaneous Diagnostic menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 21...

  • Page 94: Dip Switches

    Chapter 4 DIP SWITCHES Pressing the DIP SWITCHES softkey dis- plays the current settings of the Cal op- tions DIP switch on the LCD. The DIP switch settings can be changed and verified on the LCD. WARNING Do not touch any wires, circuitry or components in the Tympstar enclosure directly, or with conductive tools.

  • Page 95: Software Timer

    Upon conclusion of the test, the timer value is compared to the actual elapsed time, and a pass/fail indication is displayed. Pressing the EXIT softkey displays the Miscellaneous Diagnostic menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 23...

  • Page 96: Watchdog Timer

    Chapter 4 WATCHDOG TIMER Pressing the WATCHDOG TIMER softkey displays the watchdog timer test in- structions and test results. Pressing the smaller time value softkey tests the system for premature watchdog timer triggering. The software timer should complete its cycle without triggering the watchdog timer error.

  • Page 97: Error Log

    Pressing the ERROR LOG softkey displays a date/time-stamped log of errors. The Error Log displays the processor, major error number and minor error number are listed. Refer to Chapter 8: Troubleshooting for error descriptions. GSI TympStar Version 1 and Version 2 Service Manual 4 - 25...

  • Page 98: Switch 7: Self-Cal

    TympStar’s initialization screen when power is applied to the system. Probe serial number CAUTION If the serial number shown on the initialization screen does not match the TympStar’s probe serial number label, abort the calibration and contact GSI technical support. Grason-Stadler 4 - 26...

  • Page 99: Resolving Problems

    Clean the probe or Contra phone, check the probe tubes and start over. Still have a problem- Change the probe assembly and start over. Still have a problem- Contact your local GSI representative or GSI technical support. GSI TympStar Version 1 and Version 2 Service Manual 4 - 27...

  • Page 100: Calibration Procedures

    Chapter 4 Calibration procedures TympStar calibration The TympStar is calibrated using a combination of front panel hardkeys and LCD controls panel softkeys. Hardkeys Hardkeys are used as follows: Stimulus Up/Down arrows- Scrolls up or down through available stimulus tone frequencies. Intensity Up/Down arrows- Adjusts output level of stimulus tone up or down in 0.5dB increments.

  • Page 101: Softkeys

    Pressing a softkey at one level causes the screen for the selected level to be dis- played. Pressing the RETURN hardkey on the LCD panel returns to the previous level. GSI TympStar Version 1 and Version 2 Service Manual 4 - 29...

  • Page 102: Printing Calibration Sheets

    Chapter 4 Printing calibration The screen contents can be printed at any time by pressing the PRINT LEFT or PRINT RIGHT softkey. Pressing PRINT LEFT prints the data content of the sheets screen. Pressing PRINT RIGHT prints the calibration instructions shown on the screen.

  • Page 103: Adjusting Cal Hl And Target Spl Levels

    SPL can be incremented up or down in 0.5dB increments for each probe tone frequency. NOTE Target SPL values must be within 10dB of the GSI default values. GSI TympStar Version 1 and Version 2 Service Manual 4 - 31...

  • Page 104: Custom Transducers

    Adjust the TARG SPL at each probe tone frequency to the required level during the calibration of CONTRA and IPSI SPL. Step 3 When calibration is complete, enter the Normal Mode and verify that “NON-GSI” is displayed next to dBHL on the LCD. Transducer Transducers must be clean and completely inserted into the HA-1 coupler.

  • Page 105: Calibration Requirements

    0daPa. Then re-enter the Cal Mode and verify that Ipsi and Contra sound pressure levels are within the specified accuracy. Attenuator linearity and distortion can also be checked in this mode. GSI TympStar Version 1 and Version 2 Service Manual 4 - 33...

  • Page 106: Version 1 Calibration Procedures

    Chapter 4 Version 1 Calibration Procedures WARNING Some calibration tasks will be performed while the instrument enclosure is open and power is applied. Do not touch wiring, circuitry or electrical com- ponents! Voltages are present within the in- strument enclosure that can cause personal injury or death! Remove the three retaining screws that secure the cover to the bottom chas-...

  • Page 107: Loading Default Data

    DATA is stored for probe tone frequencies and oscillator clock frequencies. The STIM SPL DATA is default data stored for the Ipsi and Contra transducers. The GSI USER KEY DATAis default data stored for the instrument function keys, such as pressure range and starting pressure.

  • Page 108: Contra, Ipsi And Probe Tone Calibration

    Chapter 4 Contra, Ipsi and The calibration test functions are displayed across the bottom of the Main Calibra- Probe tone calibra- tion Menu screen. tion NOTE The system monitors output levels during these calibrations and alerts the user to levels that invalidate the calibration. These alerts appear when: •...

  • Page 109: Ipsi Spl Cal

    Adjust the target SPL requirement for each frequency by pressing the TARG SPL up/down softkeys. The level can be adjusted up or down in 0.5dB increments. The final values must be within 10dB of the GSI defaults. Step 4 Follow the instructions on the screen until all stimulus calibrations are complete.
  • Page 110 Chapter 4 Probe Tone SPL Cal Step 1 Press the PROBE SPL CAL softkey. The PROBE TONE SPL CAL screen will be displayed. Step 2 Follow the instructions on the screen until the calibration is complete. Step 3 Press the RETURN hardkey to return to the Main Calibration Menu. Grason-Stadler 4 - 38...

  • Page 111: Y Cal

    50-foot (16 meter) increments. NOTE You will not be allowed to return to the Main Calibration menu without Y calibration if the altitude was changed. GSI TympStar Version 1 and Version 2 Service Manual 4 - 39...
  • Page 112 Chapter 4 Step 3 Press the DATATRANSFER hardkey to continue. Additional calibration instruc- tion will be displayed near the bottom of the screen. Instructions Step 4 Follow the instructions on the screen until the calibration is complete. Step 5 Press the RETURN hardkey to return to the Main Calibration screen. Grason-Stadler 4 - 40...
  • Page 113 • Ambient pressure (0 daPa reference) • Low and high-pressure limits (-600/+400) • Pressure leak measurement • Pressure linearity • Safety valve operation A diagnostic pressure control is also included. GSI TympStar Version 1 and Version 2 Service Manual 4 - 41...

  • Page 114: Pressure Cal

    Chapter 4 The complete hierarchy of pressure calibration features (menu hierarchy) is shown Below in the following figure: P R E S S U R E C A L S E T S E T V E R IF Y A M B IE N T -6 0 0 /4 0 0 C A L...
  • Page 115 LCD meter. Step 4 Proceed to the set -600/400 calibration function or reinstall the cover and press RETURN to return to the Main Calibra- tion Menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 43...

  • Page 116: Set -600/400

    Chapter 4 Set -600/400 Step 1 Press the SET -600/400 softkey. The SET -600/+400 daPa PROCEDURE screen will be displayed. Step 2 Follow the instructions on the screen. When the GO TO -600 softkey is pressed, the meter will display the current -600 daPa pressure.

  • Page 117: Leak Rate

    +400 is sometimes an iterative process of adjusting one, then the other until both ends of the range are acceptable. Leak rate Step 1 Press the LEAK RATE softkey. The LEAK RATE TEST screen will be displayed. GSI TympStar Version 1 and Version 2 Service Manual 4 - 45...
  • Page 118 If the leak rates are outside the 1.0 daPa limits, check the probe tubes, connections, and the cavity and cavity-sealing surface. Using the DIAG- NOSTIC function can assist troubleshooting. Contact GSI technical sup- port if you are unable to resolve the problem.

  • Page 119: Verify Cal

    Do not touch wiring, circuitry or electrical compo- nents! Voltages are present within the in- strument enclosure that can cause serious personal injury or death! GSI TympStar Version 1 and Version 2 Service Manual 4 - 47...
  • Page 120 Chapter 4 • Adjust the safety valve to obtain satisfactory overpressure readings. Negative pressure Positive pressure Step 3 Press the RETURN hardkey to return to the Pressure Calibration Menu. Grason-Stadler 4 - 48...

  • Page 121: Diagnostic

    Use the diagnostic features to facilitate pressure system troubleshooting if neces- sary. Step 2 Press the RETURN hardkey once to return to the Pressure Calibration Menu, or twice to return to the Main Calibration Menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 49...

  • Page 122: Returning To The Normal Test Mode

    Chapter 4 Returning to the When all calibrations have been completed: • Set all switches of the Cal options DIP switch to OFF (down). Normal Test Mode • Set the Cal/Normal switch to Normal (up). • Verify that the probe and Contra phone are clean and ready for use. •...

  • Page 123: Tympstar Version 2 Calibration

    0daPa. Then re-enter Cal Mode and verify that Ipsi and Contra sound pressure levels are within the specified accuracy. At- tenuator linearity and distortion can also be checked in this mode. GSI TympStar Version 1 and Version 2 Service Manual 4 - 51...

  • Page 124: Version 2 Calibration Procedures

    Chapter 4 Version 2 Calibration Procedures WARNING Some calibration tasks will be performed while the instrument enclosure is open and power is applied. Do not touch wiring, circuitry or electrical com- ponents! Voltages are present within the instrument enclosure that can cause personal injury or death! Remove the three retaining screws that secure the cover to the bottom chas-...

  • Page 125: Loading Default Data

    DATA is stored for probe tone frequencies and oscillator clock frequencies. The STIM SPL DATA is default data stored for the Ipsi and contra transducers. The GSI USER KEY DATAis default data stored for the instrument function keys, such as pressure range and starting pressure.

  • Page 126: Contra, Ipsi And Probe Tone Calibration

    Chapter 4 Contra, Ipsi and The calibration test functions are displayed across the bottom of the Main Calibra- Probe tone calibra- tion Menu screen. tion NOTE The system monitors output levels during these calibrations and alerts the user to levels that invalidate the calibration. These alerts appear when: •...

  • Page 127: External Input Calibration

    Peak Hold and Linear Mode. This will insure that the repetition rate will have no effect on the measurement. Clicks will be calibrated in Peak Equivalent SPL at GSI. That is, for a setting of 80 dB HL, the Peak Hold SPL’s will be the following: •...

  • Page 128: Contra Spl Cal

    Chapter 4 Contra SPL Cal Step 1 Press the CONTRA SPL CAL softkey. The CONTRA PHONE SPL CAL screen will be displayed. Ipsi Channel Step 2 Press the IPSI CHANNEL softkey. The CONTRA PHONE SPL CAL – IPSI CHANNEL screen will be displayed. Grason-Stadler 4 - 56...

  • Page 129: Contra Channel

    Adjust the target SPL requirement for each frequency by pressing the TARG SPL up/down softkeys. The level can be adjusted up or down in 0.5dB increments. The final values must be within 10dB of the GSI defaults. Step 5 Follow the instructions on the screen until all stimulus calibrations are complete.
  • Page 130 Adjust the target SPL requirement for each frequency by pressing the TARG SPL up/down softkeys. The level can be adjusted up or down in 0.5dB increments. The final values must be within 10dB of the GSI defaults. Step 10 Follow the instructions on the screen until all stimulus calibrations are complete.

  • Page 131: Ipsi Spl Cal

    The IPSI SPEAKER SPL CAL will be displayed. Ipsi Channel Step 2 Press the IPSI CHANNEL softkey. The IPSI SPEAKER CAL – IPSI CHAN- NEL screen will be displayed. GSI TympStar Version 1 and Version 2 Service Manual 4 - 59...

  • Page 132: Contra Channel

    Adjust the target SPL requirement for each frequency by pressing the TARG SPL up/down softkeys. The level can be adjusted up or down in 0.5dB increments. The final values must be within 10dB of the GSI defaults. Step 5 Follow the instructions on the screen until all stimulus calibrations are complete.
  • Page 133 Adjust the target SPL requirement for each frequency by pressing the TARG SPL up/down softkeys. The level can be adjusted up or down in 0.5dB incre- ments. The final values must be within 10dB of the GSI defaults. Step 10 Follow the instructions on the screen until all stimulus calibrations are complete.

  • Page 134: Probe Tone Spl Cal

    Chapter 4 Probe Tone SPL Cal Step 1 Press the PROBE SPL CAL softkey. The PROBE TONE SPL CAL screen will be displayed. Step 2 Follow the instructions on the screen to calibrate probe tone frequencies from 226 Hz through MULT HZ (1500). Step 3 Press the VERIFY MULT HZ softkey.
  • Page 135 Step 5 Press the EXIT softkey to return to the PROBE TONE SPL CALIBRATION screen. Step 6 Press the RETURN hardkey to return to the Main Calibration Menu. GSI TympStar Version 1 and Version 2 Service Manual 4 - 63...

  • Page 136: Y/B/G Cal

    Chapter 4 Y/B/G Cal Step 1 Press the Y/B/G CAL softkey. The Y/B/G CALIBRA TION screen will be displayed. Altitude stored for your site Equivalent (corrected) values Altitude Cal Altitude calibration is accomplished as an integral part of the Y/B/G Cal function. Step 2 Verify that the altitude (elevation) displayed on the screen is correct for your site.
  • Page 137 Instructions Step 4 Follow the instructions on the screen until theY/B/G calibration is complete. Step 5 Press the RETURN hardkey to return to the Main Calibration screen. GSI TympStar Version 1 and Version 2 Service Manual 4 - 65...

  • Page 138: Pressure Cal And Diagnostics

    Chapter 4 Pressure Cal and The Pressure System calibration and diagnostics of the TympStar Version 1 and diagnostics V ersion 2 instruments is identical. Please refer to the pressure system calibration instructions provided earlier in this chapter for the TympStar Version 1. Returning to Normal When all calibrations have been completed: Test Mode...

  • Page 139: Disassembly

    The TympStar instrument is a UL-approved Middle-Ear Analyzer. Con- sequently, only exact parts replacements should be made during repair. Any alterations of the factory-supplied electrical or mechanical construc- tion or components will void the UL approval. GSI TympStar Version 1 and Version 2 Service Manual 5 - 1...
  • Page 140 Chapter 5 CAUTION Many of the components contained within the TympStar instrument are constructed of CMOS and NMOS materials. Failure to observe the fol- lowing precautions whenever a circuit board or integrated circuit pack- age is handled can result in damage to the instrument. 1) Place the instrument and components on a grounded, conductive work surface.

  • Page 141: Disassembly Procedure

    Step 1 Remove the three retaining screws that secure the cover to the bottom chassis. Step 2 Lift the cover and lock the cover sup- port stay in place. GSI TympStar Version 1 and Version 2 Service Manual 5 - 3...

  • Page 142: Removing The Analog Board

    Chapter 5 Removing the analog Step 1 Remove the analog power cable by board pulling the cable connector straight Step 2 Remove the external stimulus cable by pulling the cable connector straight Step 3 Remove the 60-pin digital signal cable by disengaging the two cable connector retainer tabs and pulling the connector straight up.
  • Page 143 CAUTION Handle the board carefully by touching only the edges. Do not bend circuit board components. GSI TympStar Version 1 and Version 2 Service Manual 5 - 5...

  • Page 144: Removing The Pump

    Chapter 5 Removing the Pump The Tympstar pump is unique to this product. The GSI33 pump assembly should not be used as a replacement. Step 1 Remove the 60-pin digital signal cable from the digital board mounted under the cover by disengaging the two cable connector retainer tabs and pulling the cable straight out of the connector housing.
  • Page 145 The pump assem- bly can now be lifted out of the chas- sis. GSI TympStar Version 1 and Version 2 Service Manual 5 - 7...

  • Page 146: Removing The Power Supply

    Chapter 5 Removing the power Step 1 Disconnect the power output cable by supply pulling the connector straight up. Step 2 Disconnect the power input cable by pulling the connector straight up. Step 3 Remove the four board retaining screws. CAUTION The lower right board retaining screw is a special plastic screw and...

  • Page 147: Removing The Power Module

    The fuse holder can be removed us- ing a flat-edge screwdriver. NOTE Holes may need to be cut in re- placement protective rubber boots to accommodate wiring harnesses. GSI TympStar Version 1 and Version 2 Service Manual 5 - 9...
  • Page 148 Chapter 5 Removing the LCD Step 1 Remove the contrast control knob- contrast control cap. Step 2 Loosen the contrast control knob re- taining screw while holding the knob. NOTE It is unnecessary to c o m p l e t e l y remove the screw.

  • Page 149: Removing The Printer Board

    Step 6 Remove the three metal screws from two upper and lower left corner of the board. Step 7 Remove the printer board from the chassis. GSI TympStar Version 1 and Version 2 Service Manual 5 - 11...
  • Page 150 Chapter 5 Removing the Step 1 Remove the printer board as described earlier. Rotate the printer LCD up and back away from the front panel. Step 2 Open the printer door. Step 3 Remove the two screws (left and right) that secure the printer doorframe to the cover.
  • Page 151 CAUTION The ground strap screw is metric and might be difficult to replace in your geographic location. Store the screw with care. GSI TympStar Version 1 and Version 2 Service Manual 5 - 13...
  • Page 152 Chapter 5 Step 7 Remove the bundle of black printer cable wires from the cable clamp un- der the top cover. Step 8 Remove the printer retainer screws at the front and rear of the printer as- sembly. Step 9 Carefully remove the printer assem- bly from the top cover, while guiding the printer cables through the slots in...
  • Page 153 Step 5 Disconnect the 26-pin LCD board cable from the PC104 board by pull- ing the connector straight up. PC 104 board Digital board GSI TympStar Version 1 and Version 2 Service Manual 5 - 15...
  • Page 154 Chapter 5 Step 6 Disconnect the digital board cable from the PC104 board by pulling the connector straight up. Step 7 Remove the four retaining screws at the corners of the PC104 board. Step 8 Remove the PC104 board by pulling the connector on the end of the board straight away from the digital board.

  • Page 155: Removing The Digital Board

    Disconnect the 4-wire and 8-wire analog board cables. Step 5 Disconnect the six pump assembly cables by disengaging each locked connector and pulling the connectors straight away from the board. GSI TympStar Version 1 and Version 2 Service Manual 5 - 17...
  • Page 156 NOTE GSI recommends that all digital board cables connected to the PC 104 board remain temporarily connected to facilitate proper cable placement and orientation when in- stalling a new digital board.
  • Page 157 When the connectors on the board have cleared the holes, lift the board straight out of the cover. GSI TympStar Version 1 and Version 2 Service Manual 5 - 19...

  • Page 158: Removing The Lcd

    Chapter 5 Removing the LCD Step 1 or Softkeypad cables Disconnect the LCD cable from the digital board. Step 2 Remove the surge-suppressor cable clamp retaining screw, and remove the cable clamp. 3 Surge suppressors Step 3 Unclamp and remove the three surge suppressors.
  • Page 159 Gently lift the LCD back cover straight off the LCD enclosure. Step 9 Remove the four screws located un- der the top panel that secure the left LCD panel hinge. GSI TympStar Version 1 and Version 2 Service Manual 5 - 21...
  • Page 160 Chapter 5 Removing the LCD Step 10 or Softkeypad cables Remove the screw located under the LCD enclosure that secures the cable (continued) clamp to the top-left of the chassis. The cable clamp rests on top of a ground cable connector and folded metal conductor. CAUTION The cable clamp and two conductors must be re-assembled in exactly the same orientation.
  • Page 161 Step 17 Remove the braided ground strap. Step 18 Remove the shielded display cable. GSI TympStar Version 1 and Version 2 Service Manual 5 - 23...
  • Page 162 Chapter 5 Removing the LCD Step 19 or Softkeypad cables Move the flat cable against the out- (continued) side of the cable opening, and using needle-nose pliers, carefully orient the black cable header sideways in the cable opening. Gently pull the LCD cable header through the hole.
  • Page 163 The brown cable wire should be connected to pin 1 on the board when the cable is re-installed. Step 5 Unplug the white cable connector near the hinge assembly. GSI TympStar Version 1 and Version 2 Service Manual 5 - 25...
  • Page 164 Chapter 5 Step 6 Unplug the black inverter cable con- nector. Step 7 Remove the four screws that retain the LCD circuit board to the cover, and carefully remove the LCD board/ screen assembly. The LCD is attached to the rear of the board.

  • Page 165: Removing The Lcd Front Panel Label (Softkey Panel)

    LCD panel label through the cable slot in the front LCD enclosure panel. The right lower corner of the label will lift off the surface of the panel. GSI TympStar Version 1 and Version 2 Service Manual 5 - 27...
  • Page 166 Chapter 5 Step 5 From inside the LCD case, remove the screw that secures the cable clamp and grounds in the left-top of the chassis. Fold the flat keyboard ground connec- tion sheet and slide it through the slot in the left lower corner of the LCD enclosure panel while peeling the la- bel off the panel.

  • Page 167: Removing The Instrument Front Panel Label

    NOTE One-key and two-key modules are cut from four-key modules. GSI TympStar Version 1 and Version 2 Service Manual 5 - 29...
  • Page 168 Chapter 5 Grason-Stadler 5 - 30...

  • Page 169: System Level Parts

    Overall assembly page 6-4 LCD assembly page 6-5 Top case assembly page 6-6 Bottom case assembly page 6-7 Instrument assembly page 6-8 Labels page 6-9 Printer assembly page 6-11 GSI TympStar Version 1 and Version 2 Service Manual 6 - 1...

  • Page 170: Case/Chassis

    Chapter 6 Case/chassis Grason-Stadler 6 - 2...
  • Page 171 System Level Parts GSI TympStar Version 1 and Version 2 Service Manual 6 - 3...

  • Page 172: Overall Assembly

    Chapter 6 Overall assembly Grason-Stadler 6 - 4...

  • Page 173: Lcd Assembly

    System Level Parts LCD assembly GSI TympStar Version 1 and Version 2 Service Manual 6 - 5...
  • Page 174 Chapter 6 Top case assembly Grason-Stadler 6 - 6...
  • Page 175 System Level Parts Bottom case assembly 3V Lithium Battery Panasonic BR1632 (or equivalent) GSI TympStar Version 1 and Version 2 Service Manual 6 - 7...

  • Page 176: Instrument Assembly

    Chapter 6 Instrument assembly Grason-Stadler 6 - 8...

  • Page 177: Labels

    System Level Parts Labels GSI TympStar Version 1 and Version 2 Service Manual 6 - 9...
  • Page 178 Chapter 6 Grason-Stadler 6 - 10...

  • Page 179: Printer Assembly

    System Level Parts PrinterAssembly GSI TympStar Version 1 and Version 2 Service Manual 6 - 11...
  • Page 180 Chapter 6 Grason-Stadler 6 - 12...

  • Page 181: Hardware Description

    The chapter begins with a de- scription of the system boot sequence. NOTE: GSI will make available instructions, schematic diagrams and other system drawings as it deems appropriate to be repaired in the field. System boot sequence Pre-CP Control 1.
  • Page 182 Chapter 7 8. The DAT subsystem is initialized to allow for reading/writing of data to the Disk- On-Chip as well as the SEREE (although the SEREE is not actually accessed at this time – see below). NOTE SEREE is the serial EEPROM in the probe. 9.

  • Page 183: Set_Op_Mode()

    32. The “GSI TympStar” logo is displayed on the LCD and CRT (both driven at the same time). This is the first graphic output to the LCD/CRT since it was initialized.

  • Page 184: Tymp_Sk()

    41. Altitude information is read from the probe SEREE. Calculates site altitude oc- clusion and probe in ear limits are calculated. 42. Initialize current RTL values from either GSI default RTL or USER selected values. If error reading RTL values, GSI defaults are loaded.

  • Page 185: Interconnection Diagram

    Hardware Description Interconnection diagram GSI TympStar Version 1 and Version 2 Service Manual 7 - 5...

  • Page 186: Block Diagram Description Of Assemblies

    Compo- nent-level troubleshooting and parts replacement should only be performed by GSI service technicians at the factory. The TympStar is comprised of the following 9 major assemblies: ·...

  • Page 187: Digital Board

    · Noise generation · Click generation · Probe tone, IPSI and contra amplifiers · Probe interface · Signal multiplexing for probe tone, microphone, reflex stimuli and pressure signals GSI TympStar Version 1 and Version 2 Service Manual 7 - 7...

  • Page 188: Power Supply Board

    Chapter 7 Power supply board The power supply is a UL2601, CSA22.2 and IEC 601.1 approved switching power supply. The various supply outputs are as follows: · +5V +/- 2% rated for 12Amp continuous load · +24V +/- 10% rated for 3.5Amp continuous load ·...

  • Page 189: System Assembly Diagram

    Hardware Description System assembly diagram LCD front LCD rear AC Power module Probe GSI TympStar Version 1 and Version 2 Service Manual 7 - 9...
  • Page 190 Chapter 7 Printer board Digital board Power supply board Pump Analog board PC 104 board Grason-Stadler 7 - 10...

  • Page 191: Troubleshooting

    Pins 4,5,6,7 ground reference Pins 8, 9 =+24 VDC Pins 10,12= 0VDC Pin 11= -12VDC Pin 13= +12VDC Pin 1 (Red wire) Pin 13 Reference J2 - Set to +5.00 (+or-10mVDC) GSI TympStar Version 1 and Version 2 Service Manual 8 - 1...

  • Page 192: Power Supply (Set +5Vdc)

    Chapter 8 Power Supply (set +5VDC) Location of potentiometer is in the left rear corner of the power supply. Analog Board (J7) Pins 1,2,3 = +5.00 Volts DC Pins 4,5,7 ground reference Pins 8, 9 = +24 VDC Pins 10,12= 0VDC Pin 11= -12VDC Pin 13= +12VDC Pin 13...

  • Page 193: Analog Board (J10)

    Pin 2,3= Probe Ground Pin 4= +12VDC Pin 5= -12VDC Pin 6,7= Ground Reference Pin 8= +5.00VDC Pin 1 Digital Board (J34) Pin 1= +5.00VDC Pin 2,3,4=Ground Reference Pin 1 GSI TympStar Version 1 and Version 2 Service Manual 8 - 3...

  • Page 194: Printer Board (Full View)

    Chapter 8 Printer Board (Full View) Printer Board (J6) Pin 1=+24VDC Pin 2=ground reference Pin 3=+5.00VDC Pin 4= ground reference Pin 1 Printer Board (J4) Pin 1,2= +24VDC Pin 3,4= ground reference Pin 5,6,7= STROBE 1,2,3 Pin 8= THERMISTOR Pin 9= STROBE 4 Pin 10= PRTLATCH Pin 11= STROBE 5 Pin 12= +5.00VDC...

  • Page 195: Printer Board (J8)

    Pin 1= +5.00VDC Pin 4= ground reference Pin 1 Pressure Potentiometer (Digital Board) Pin 1(Red)= Ground Reference Pin 2(White)= @+200dapa= +4.29VDC @-400dapa= +3.84VDC Pin 3(Black)= +5.00VDC Pin 1 (Red wire) GSI TympStar Version 1 and Version 2 Service Manual 8 - 5...

  • Page 196: Error Codes

    Chapter 8 Error Codes Error codes are alphanumeric and are generated by the Control Processor (CP) on the PC 104 board and the Signal Processor (SP) on the Digital board. The Control Processor is the main host computer and controls the overall operation of the instru- ment.
  • Page 197 1 = num_free_pages > 0 but all pages indicate already data stored. Likely Causes: This is an internal check; problems indicate an internal software failure. Corrupted CP memory could also account for this. GSI TympStar Version 1 and Version 2 Service Manual 8 - 7...
  • Page 198 Chapter 8 CP Error codes 1700 ABORT_PROBE_GAIN_TIMEOUT Timeout on wait for SP to set the probe tone gain to the specified level. Subcodes: 0 = SP does not complete 75 dB AGC (3 seconds) 1 = SP does not start sending compliance data after completing AGC (15 seconds) Likely Causes: SP failure is the most likely cause or problems in the hardware path between SP and CP (including...
  • Page 199 SP and FPGA. It could be a problem with the FPGA itself responsible for the SP watchdog timer and control lines to the SP and to the CP. GSI TympStar Version 1 and Version 2 Service Manual 8 - 9...
  • Page 200 Chapter 8 CP Error codes 2300 ABORT_FPGA_PROGRAM_READBACK_FAIL FPGA Failed to program correctly. Subcodes: none Likely Causes: During bootup, the CP software reads the FPGA.BIN file from disk and programs the FPGA one byte at a time (through the parallel port). At the end of the programming sequence, a known special byte pattern is requested from the FPGA;...
  • Page 201 With any new release that requires an update in .INI file, the system must be booted to the CAL DEFAULTS screen and the GSI USER/KEY DATA must be loaded. If this is not the source of the problem, one or more data files...
  • Page 202 Chapter 8 CP Error codes 2503 ABORT_INI_WRITE_FILE_NOT_FOUND Ini file not found during write. Subcodes: none Likely Causes: The .INI file was not found for read access; it should be part of the initial TympStar installation. In this case one or more data files may have been corrupted due to a previous system crash (possible if a file was open for write and system crashes for any reason).
  • Page 203 3001 ABORT_RT_SEREE_TEST_FAIL Serial EEPROM failure Subcodes: read data byte Likely Causes: Probe EE faulty or a problem with the data/control path from probe back to the digital board. GSI TympStar Version 1 and Version 2 Service Manual 8 - 13...
  • Page 204 Chapter 8 CP Error codes 3100 ABORT_DIAG_SP_NOT_RESPONDING SP Not responding during entry to DIAG mode. Subcodes: none Likely Cause: When the system first enters the Diagnostics Mode, the DPRAM is enabled and the SP is taken out of reset (i.e. initialized). The unit can detect the SP state of being initialized since the SP writes to key DPRAM locations that are monitored.
  • Page 205 (including noise that may be causing retried reads). Less likely is a software problem that sees the shadow read task failing and this would indicate an internal software failure. GSI TympStar Version 1 and Version 2 Service Manual 8 - 15...

  • Page 206: Sp Error Codes

    Chapter 8 SP Error codes Code Short Description Description 0002 System RAM Test Failure System RAM is checked for integrity at reset. Subcodes: Specific address that failed. Likely Causes: Shorted data line, open data line, intermittent address/control line, defective component at U30. EPROM Checksum Mismatch The EPROM is checksummed at reset;...
  • Page 207 DFT calculation. Subcodes: Out-of-range nominal DFT base. Likely Causes: Clogged probe; mic circuit; filter circuit; wrong cavity size used; bad probe SPL calibration data. GSI TympStar Version 1 and Version 2 Service Manual 8 - 17...
  • Page 208 Chapter 8 SP Error codes 0041 DFT Limit Too Big While performing 2.0cc compliance calibration, the signal processor ensures that the measured compliance at a nominal gain setting allows for enough span in DFT calculation. Subcodes: Out-of-range nominal DFT base. Likely Causes: Clogged probe;...

  • Page 209: Error Messages

    Error messages are text and are generated by the Control Processor. The following messages may occur either as the result of an improper selection made by the op- erator or by a fault internal to the GSI TympStar: ERROR INVALID SELECTION An unlabeled softkey was pressed.
  • Page 210 INVALID SPL LIMIT REACHED An attempt was made to modify the set SPL value to more than ±10 dB HL away from the GSI set SPL value for that stimulus. NR <> Screening reflex test result indicating that the test was stopped for that stimulus with no reflex detected due to an attenuator limit error when setting the attenuator for the intensity being tested.
  • Page 211 Perform an altitude calibration. ALERT PROBE MUST BE IN A CAVITY BEFORE PRESSING DATA TRANSFER The probe was detected out of the cavity while attempting to calibrate the compli- ance. GSI TympStar Version 1 and Version 2 Service Manual 8 - 21...

  • Page 212: Lcd Problem Symptoms And Probable Causes

    Chapter 8 LCD problem symptoms and probable causes Lcd completely blank, but probe led’s blinking Check the contrast adjustment potentiometer. Check LCD backlight inverter operation. Lcd completely blank and probe led’s off Check the integrity of power supply voltages at each board, CPU supply (+5 VDC) being the most critical.

  • Page 213: Pump Problem Symptoms And Probable Causes

    2) Check cables between the digital board and printer board for intermittent con- nections. Check the the printer to printer board ribbon cable for intermittent connections. GSI TympStar Version 1 and Version 2 Service Manual 8 - 23...

  • Page 214: Hardware Diagnostic Mode

    The following text describes the circuit functions that can be controlled by the Diag- description nostic Mode. NOTE: GSI will make available instructions, schematic diagrams and other system drawings as it deems appropriate to be repaired in the field. The Pressure Multiplexer is a CMOS analog switch located on Analog Schematic.

  • Page 215: Mic. Mux

    Routes the Ipsi channel to the Ipsi transducer I-C: Routes the Ipsi channel to the Contra transducer C-I: Routes the Contra channel to the Ipsi transducer C-C: Routes the Contra channel to the Contra transducer GSI TympStar Version 1 and Version 2 Service Manual 8 - 25...

  • Page 216: Ipsi/Contra And Osc L/Osc 2

    Chapter 8 IPSI/CONTRA and Oscillator 1 (Analog Schematic) and Oscillator 2 can be programmed and routed in OSC l/OSC 2 this mode. Also the Ipsi and Contra channels can be turned on or off in this mode. With this combination of oscillator programming/routing and channel control, either oscillator can be routed to either channel and the desired stimulus can be selected.
  • Page 217 Calibration test functions 4-36 Version 2 3-25 Case/chassis 6-2 Automatic Auto Zero Changing from a Version 1 to a Version 2 3-13 Version 1 3-18 Version 2 3-25 GSI TympStar Version 1 and Version 2 Service Manual Index - 1...
  • Page 218 Index Changing from a Version 2 to a Version 1 3-11 Data Transfer 3-2 Changing Instrument Versions 3-11 Data Transfer hardkey 3-2, 4-28 Changing parameter settings 1-7 Date and time settings 4-18 Cleaning Default data 4-53 Probe 4-4 Default parameter settings 1-7 Contra phone 4-5 Diagnostic 4-49 Wires 4-4...
  • Page 219 Hardkey or softkey activations 4-21 LCD hardkeys 3-3 Hardkeys 1-5, 3-1, 3-2, 4-27 LCD or Softkeypad cables 5-20 Tymp 3-2 LCD panel 1-5, 3-4 LCD 3-3 LCD panel hinge 5-21 GSI TympStar Version 1 and Version 2 Service Manual Index - 3...
  • Page 220 Index LCD panel label 5-27 LCD panel softkeys 4-28 Navigating menus 4-29 LCD problem symptoms and probable causes 8-22 Negative over-pressure 7-6 LCD screen 3-4, 3-6 Noise generators 7-7 Leak rate 4-45 Noise Stimulus LED 1-4, 4-20 Version 1 2-3 Left column printout data 3-10 Version 2 2-13 License Code...
  • Page 221 Probe tone frequencies 1-2, 1-3, 3-5 Version 1 2-6 Version 1 3-5 Resolving problems 4-27 Version 2 3-5 Return hardkey 3-3 Probe tone generation 7-7 Return key 4-28 GSI TympStar Version 1 and Version 2 Service Manual Index - 5...
  • Page 222 Index Returning to Normal Test Mode 4-66 Environmental Returning to the Normal Test Mode 4-50 Version 1 2-6 ROM 7-6 Version 1 2-17 Routine calibration sequence 4-33, 4-51 Mechanical ROUTING 4-14, 4-54, 8-25 Version 1 2-9 RS-232 loopback connector. 4-16 Version 2 2-20 RS-232 ports 4-15 Pneumatic system...
  • Page 223 Test mode choices 1-2, 1-3 Version 2 External reflex test stimuli 3-7 Test modes and menu navigation 1-5 Version 2 LCD graphic traces 3-5 Test parameters 3-3, 3-4 GSI TympStar Version 1 and Version 2 Service Manual Index - 7...
  • Page 224 Index Version 2 probe tone frequencies 3-5 Version 2 Specifications 2-10 Version 2 test procedures 3-22 Version 2 to Version 1 Changing 3-11 Versions Changing, Instrument 3-11 VGA interface 7-7 VGA monitor 1-2, 1-3 Voltage controlled amplifiers 4-9 Voltage requirement 4-55 Warm-Up Time Version 1 2-6 Version 2 2-17...

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