Video Colposcope 88xxxx and 89xxx series Service Manual Rev A July 1997

Part No

Rev

Description

ECN #

Date

Initiator

880220

A

New Release

5-35922

7/97

R.Settembre

DRAWINGS AND/OR ILLUSTRATIONS AND/OR PART NUMBERS CONTAINED IN THIS DOCUMENT ARE FOR REFERENCE PURPOSES ONLY! FOR CURRENT REVISIONS CALL WELCH ALLYN.

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Table of Contents Help Information ...iii Section 1: General Information ... 1-1 1.1 General Precautions and Symbols ... 1-2 1.2 Summary of Warnings and Cautions ... 1-3 1.3 Basic System Description ... 1-4 1.4 Product and Repair Bill Numbers ... 1-5 1.5 Recommended Initial Settings for Monitor ... 1-6, 1-7 1.6 Cleaning ... 1-8 Section 2: Service... 2-1 2.1 Bench Test ... 2-2, 2-3 2.2 Required Tools ... 2-4 2.3 Camera Alignment Information ... 2-5, 2-6, 2-7 2.4 Hipot and Leakage Current Testing ... 2-8

Section 3: Problem Solving ... 3-1 3.1 Troubleshooting ... 3-2

Section 4: Disassembly and Repair ... 4-1 4.1 Stand Alone Colposcope Disassembly Sequence ... Photos 1- 37 4.2 Reference Photos for Reassembly ... Photos 38-46 4.3 Handle Disassembly ... Photos 47-49 4.4 Pole Clutch Replacement ... Photos 50-52 4.5 Camera Alignment Procedure ... Photos 53-58 4.6 Power Supply ... Photos 59-60 Section 5: Repair Parts Reference Drawings and Interconnect Diagrams 5.1 Stand Alone Colposcope Repair Parts and Drawing References. (5 pages) 5.2 Drawings 5.3 Interconnect Diagrams

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Help Information: ¡

All service and repairs must be performed by authorized Welch Allyn personnel or agents, using Welch Allyn replacement parts. Failure to do so will invalidate the product warranty.

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Customers in North America should return instruments requiring service to the Welch Allyn Technical Service Department list below, or to an authorized Welch Allyn distributor.

Technical Service Department Welch Allyn, Inc. 4341 State Street Road Skaneateles Falls, NY 13153-0220 U.S.A. Telephone: 800-535-6663 Fax: 315-685-4653

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Customers outside of North America should return their units to a local, authorized Welch Allyn distributor, or to their nearest Welch Allyn service center. The part and serial numbers are located on the housing of the colposcope near the fan. Remove the colposcope from the handle to locate these numbers.

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Troubleshooting assistance is contained in Section 3 of this manual.

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Please read and understand Colposcope Users Manual P/N 880136, and all peripheral equipment users manuals.

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Thank you for purchasing the Welch Allyn Video Colposcope. Follow the operation and maintenance instructions found in this manual and your video colposcope will provide you with many years of reliable service. Please read these instructions thoroughly before attempting to use your new video colposcope.

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CAUTION: Federal law restricts sale of this device to, or to the order of, a physician or other appropriately licensed medical professional. WARNING: Users of this equipment should be thoroughly trained in the appropriate medical procedures. Furthermore, they should take the time to read and understand these instructions before performing any procedure. They should also read and understand the instructions for any other equipment used in conjunction with the video colposcope (i.e. electrosurgical generators). Failure to do so may result in injury to the patient and/or damage to the video colposcope.

IMPORTANT: The material outlined in this manual should be reviewed and understood prior to operation of the equipment. NOTE: This equipment has been tested and complies with emissions standard EN60601-1-2: 1993, CISPR Publication 11:1990/EN55011: 1991 for Radiated and Conducted Emissions, Group 1, Class B. This equipment also has been tested and complies with susceptibility standards to electrostatic discharge (ESD), radiated electromagnetic fields, fast transient bursts, and conducted surge interference. The procedures and criteria for conformance are contained in IEC801-2, 801-3, 801-4, 801-5, and EN60601-1-2: 1993. In addition, this equipment has been tested and complies with EN6000-3-2 (1st Edition) covering harmonic disturbances in supply systems caused by household appliances and similar electrical equipment, Part 2, and EN 6000-3-3 (1st Edition) covering voltage fluctuation disturbances in supply caused by household appliances and similar electrical equipment Part 3. INDICATIONS FOR USE: For examination of the tissues of the vagina, cervix, and external genitalia, to investigate, by means of magnification, abnormal cervical cytology or suspicious lesions of the lower female genital tract. Also used for corresponding biopsy and treatment, when indicated. NOTE: This device complies with the guidelines of the American Conference of Governmental Industrial Hygienists threshold limits values for ultraviolet radiation for exposure time and distance consistent with the intended use of this device.

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Section 1

General Information 1.1

General Precautions and Symbols

1.2

Summary of Warnings and Cautions

1.3

Basic System Description

1.4

Product Numbers and Descriptions

1.5

Recommended Initial Settings for Monitor

1.6

Cleaning

Stand Alone Colposcope Service Manual

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1.1 General Precautions and Symbols

General Precautions For safety, the video colposcope should only be coupled to a grounded 110-120VAC hospital-grade outlet (220-240 volt, 50 cycle international). The video colposcope should not be operated in the presence of flammable or explosive gases or chemicals, or installed in areas where these materials are commonly used. To avoid overheating, the video colposcope should not be positioned closer than 6" to any wall. Keep all liquids away from electrical equipment to avoid the possibility of shock and instrument damage. Occasionally inspect the power cord for signs of cuts, abrasions or dents. The video colposcope should never be stored or operated in areas where it could get wet or could be exposed to any environmental conditions like extreme temperature or humidity, direct sunlight, dust, etc. The lamp is extremely bright. DO NOT stare directly into illumination lens when the lamp is lit. All service to the video colposcope must be performed by Welch Allyn or by an authorized repair center. Video colposcope user should adhere to the operating conditions found in this manual. Otherwise, instrument damage may occur and/or operator/patient safety may be comprised. There are no user serviceable parts (other than the lamp and fuses) in this unit or in its accessories. Any attempt to disassemble and/or repair this unit will result in voiding of the warranty.

Stand Alone Colposcope Service Manual

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1.2 Summary of Cautions and Warnings

Stand Alone Colposcope Service Manual

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1.3 Basic System Description The Stand Alone version is not a Video Path product and does not require a light source. It is a camera and light source in one compact housing mounted on either a vertical pole stand or a swing arm stand as shown in Figure 1. The table on Page 1- 6 is a list of product numbers and repair bill numbers. It also lists the product numbers for the camera units only.

Fig. 1

Stand Alone Colposcope Service Manual

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1.4 Product Numbers and Descriptions

Product Number

Repair Bill #

Description/Format (Burned-in & aligned camera)

Market

88000 (88021 Camera/Pole with a 49555 Base)

88021 Repair (Camera/Pole repair bill)

Vertical Stand with RS232 NTSC Camera Unit is PN 880080-501

U.S.

88002 (88022 Camera/Pole with a 49555 Base)

88022 Repair (Camera/Pole repair bill)

Vertical Stand with RS232 PAL Camera Unit is PN 880080-502

Europe

88004 (88024 Camera/Pole with a 49555 Base)

88024 Repair (Camera/Pole repair bill)

Vertical Stand with RS232 Pal Camera Unit is PN 880080-502

United Kingdom

88006 (88026 Camera/Pole with a 49555 Base)

88026 Repair (Camera/Pole repair bill)

Vertical Stand with RS232 PAL Camera Unit is PN 880080-502

Australia

89000 (89021 Camera/Swing Arm with a 89050 Pole and a 89555 Base) (3 cartons)

89021 Repair (Camera/Swing Arm repair bill)

Swing Arm with RS232 NTSC Camera Unit is PN 880080-501 (reposition toe clip for swing arm attachment)

U.S.

89002 (89022 (Camera/Swing Arm with a 89050 Pole and a 89555 base) (3 cartons)

89022 Repair (Camera/Swing Arm repair bill)

Swing Arm with RS232 PAL Camera Unit is PN 880080-502 (reposition toe clip for swing arm attachment)

Europe

89004 (89024 Camera/Swing Arm with a 89050 Pole and a 89555 base) (3 cartons)

89024 Repair (Camera/Swing Arm repair bill)

Swing Arm with RS 232 PAL Camera Unit is PN 880080-502 (reposition toe clip for swing arm attachment)

United Kingdom

89006 (89026 Camera/Swing Arm with a 89050 Pole and a 89555 base) (3 cartons)

89026 Repair (Camera/Swing Arm repair bill)

Swing Arm with RS232 PAL Camera Unit is PN 880080-502 (reposition toe clip for swing arm attachment.)

Australia

89050 Repair (repair bill for the swing arm pole)

Pole, Swing Arm Packaged

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1.5 Recommended initial settings and connections for Sony PVM-1350 Monitor

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Factory “Default” Settings of Monitor: Refer to PG 5 of Sony PVM-1350 Operating Instructions for complete details. Menu Item Number: 1 2 3 4 5 6 7 8 9 10 11

Description: Main Menu Chroma Set up menu Caption Vision menu User Config 1 menu User Config 2 menu Auto Adjust screen Color System Display menu V Hold Screen RGB SYNC menu NTSC Setup Level menu Language Menu

Stand Alone Colposcope Service Manual

Default Factory Setting: follow instructions Setting is OFF Setting is OFF follow instructions follow instructions follow instructions setting is AUTO adjust only if necessary setting is SYNC ON G setting is 7.5 setting is ENGLISH

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Section 2

Service 2.1

Bench Test

2.2

Required Tools

2.3

Camera Alignment Procedure

2.4

Hi-Pot and Leakage Current Testing

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2.1 Bench Test

Bench Checks of the Stand Alone Video Colposcope Perform the following functional checks of the colposcope when it is received for service and after repair: Perform Video Colposcope cleaning per page 16 of Welch Allyn Video Colposcope User’s Manual pn 880136 (reprinted in this service manual in Section 1.) 1

Perform physical examination of returned colposcope and accessory cables, cords etc. A) Make record of what components were received. Note serial numbers where applicable. B) Check the physical and electrical condition of all items including S-video cables, power cords, RS232 cables, all pins and sockets. C) Check the lamp connector. The lamp has a small and a large pin. Make sure the lamp socket has not been ruined by someone connecting the connector in reverse. This would damage the connector and make lamp operation intermittent. Connectors must fit lamp pins securely.

2

Connect Colposcope to monitor, and or other system components such as Video Printerand perform test of colposcope functions listed below: A Lamp operation B Fan operation C Lamp door micro switch safety function. Try to run unit without lamp door. If lamp lights, then micro switch(s) are stuck or defective. D Colposcope attachment to pole or swing arm. E Colposcope functions...allow approximately 10 seconds for the camera unit to stabilize and focus. The camera will stabilize at zoom (-). F Focus: Check focus, zoom G Check video picture quality: view a color bar chart and verify that the colors on the monitor are (visual reference) the same as the bar chart. Verify that the image is free from any visible video noise. H Check green filter operation: the green filter led should flash as it changes into an out of the green filter mode. It will stay slighted while the green filter is on. I Check the Light Director movement. It should move freely and detent in three positions: 45 degrees left, right and back to center. Check the projected spot for uniformity and no dark spots.

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3

Check all mechanical fasteners for tightness. Check all cords and cables for solid connections, (wiggle the connectors and cords while the colposcope is operating and look for any breaks or static on the monitor.)

4

Check the printer functions of the colposcope handle. Verify that the “F” button will freeze the live image as displayed on the monitor or three beeps from the printer and “No Paper” text appears on the monitor and printer. Verify that the “C” button will print the frozen image displayed on the monitor. Verify that the “V” button will cause the monitor to alternately display the live video then the still “frozen” image.

5

Check the stands (swing arm, and vertical pole, casters) for function and smooth operation. Check the brakes...(Do they hold?)

6

Check lenses for scratches, fingerprints, smudges, dust, moisture.

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2.2 Required List of Tools

1) Torx T-15 Driver for housing screws. 2) English Hex Key set for various hex head fasteners 3) One extra hex key 4) RS232 Interface Cable Welch Allyn order number 88500 5) Strap Wrench T-10913 6) Achromatic Lens Assembly Tool - T-14716

You must order the following to check out the Colposcope

Monitor: Service Equipment should include a monitor for your standard. This is a Sony PVM 1350 (NTSC) or a Sony PVM-1450 QM (PAL). Note: this is not an underscan monitor as is the Sony PVM-1351Q AC120V 50/60Hz (NTSC/PAL/SECAM) Printer: To check the RS232 functioning of the Colposcope. This is a Sony VP1800MD (NTSC) or a Sony VP-1800 EPM (PAL). Standard electronic hand tools and Digital Volt Ohm Meter will be required for basic troubleshooting such as checking output voltages and continuity.

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2.3 Camera Alignment Information The information below is intended for those who wish to know how the camera is calibrated: Sony Cameras Welch Allyn PN 880057 (NTSC) and PN 880057-1 (PAL) are processed during manufacturing as follows: Photo 1: 1. Camera is received from Sony with accessory connectors in a bag (background). 2. Camera has a small circuit board (upper left) attached by two small metric screws.

Camera as received from Sony

Before installing Sony Cameras Welch Allyn PN 880057 (NTSC) and PN 880057-1 (PAL) into a Colposcope camera chassis perform the following steps: ● ● ●

Discard bag of connectors and remove and discard circuit board. Camera is now ready to be installed in chassis and have calibration (vignetting) checked. Follow camera vignetting checking / calibration process described in Section 4 Photos 53 through 58.

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The test equipment required for checking and adjusting camera calibration (vignetting) is shown below:

Call Welch Allyn for ordering details.

Camera Calibration (Vignetting) Equipment including: “Sony RE-95 Remote Commander for Adjustment,” suitable printers, and a Sony PVM-1351Q AC 120 V 50/60 Hz Color Monitor

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2.3 Camera Alignment Information

Calibration of the Stand Alone Colposcope Camera: A convenient service strategy regarding camera calibration is to stock one or two Colposcope Sub Assemblies (NTSC Colposcope Sub Assembly PN 880080-501, or PAL Colposcope Sub Assembly PN 880080-502.) These Colposcope Sub Assemblies are used as exchange units if a camera failure occurs. Exchange a failed Colposcope Sub Assembly with a factory calibrated Colposcope Sub Assembly which has had Camera Alignment Procedure performed at the factory. This eliminates the need for calibration equipment at your facility. The camera alignment procedure itself takes only six minutes, but requires additional equipment such as the handheld remote control called a “Sony Remote Commander for Adjustment” and a Sony Underscan monitor (for example, a Sony PVM-1351Q AC 120V 50/60 Hz Color Monitor.) To switch vertical pole type mount to swing arm type mount, simply re-position the toe piece. There is enough information in this manual to elect to equip your service center with the necessary equipment and training to perform the alignment procedure. But an Underscan monitor would have to be purchased instead of a non-Underscan monitor. The exchange process: If a colposcope fails due to a failed camera follow the steps below: ● Your technician tests/diagnoses returned colposcope and determines failure is due to bad camera. ● Technician removes the camera assembly (camera and chassis assembly) from the customer’s housings and installs the factory aligned/burned-in camera assembly from the exchange unit. ● The original housings maintain serialization for repaired colposcope. The unit is tested and returned to owner. ● The failed Colposcope Sub Assembly is returned to Welch Allyn Medical Division Technical Service Department, State Street, where the camera will be replaced and calibrated. It will be returned to your depot parts inventory.

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2.4 Hi-Pot and Leakage Current Testing

Hi-Pot and current leakage tests:

When electrical components have been changed, or if there is any reason to believe that the unit will not meet safety specifications for HI-POT and Leakage current, it is advisable to check HI-POT and Leakage current. If the unit fails these tests, replace the faulty component(s) and re-test.

HI-POT Mains to ground specifications. With the power switch to the “ON” position, the unit must withstand: 1.5KVAC for 1 second.

Leakage current test specifications. Input voltage: 115 +/- 5 vac 60Hz Turn the colposcope unit power switch to the “ON” position. Verify lamp function- lamp is on. Touch leakage probe of the tester to the following parts of the stands: -Vertical pole model: Phillips screw on vertical pole (aluminum pole). -Swing arm model: socket head cap screw at connection of horizontal arm to pole. The leakage current shall not exceed 100 micro Amperes. ( .0001 Amps) When testing in 230 volt countries, the unit must still adhere to the 100 micro Ampere limit on leakage current.

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