Bovie DERM 101 and 102 Service Guide Rev 0

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SERVICE GUIDE

Service Guide • DERM 101/102

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This Service Guide and the equipment it describes are for qualified technicians who maintain and repair the Bovie® DERM 101/102

High Frequency Desiccator. Additional User information is available in the Bovie® DERM 101/102 User’s Guide.

This document covers technical descriptions of the Bovie® DERM 101/102including its physical appearance, all operator controls

and indications, operational specifications, component functional descriptions (module level), diagrams of the electronic circuits

used, and troubleshooting guidelines (with chart comparisons).

The Bovie DERM 101/102 was constructed with the highest quality components. In the unlikely event that your generator fails within two years of purchase date, Bovie Medical Corporation will warranty the product and effect factory repairs. Please refer to

Appendix A, Warranty for what is covered, length of coverage, and “How to Receive a Return Authorization Number.”

Equipment Covered in this Manual

Bovie DERM 101™, Bovie DERM 102™:

Reference No.: DERM101, DERM102

For Information Contact

Bovie Medical Corporation • 5115 Ulmerton Road, Clearwater, FL 33760 USA

U.S. Phone 1-800-537-2790 Fax 1-800-323-1640 • International Phone +1-727-384-2323 Fax +1-727-347-9144

www.boviemed.com • sales@boviemed.com

DERM 101/102 Electrosurgical Desiccator: Reference No.: DERM 101, Reference No.: DERM 102 Manufactured by BovieBulgaria Ltd., Boul. Tsarigradsko shose No133, Building 3, fl.3 and fl.5, 1784 Sofia, Bulgaria, for Bovie Medical Corporation.

©2014 Bovie Medical Corporation. All rights reserved. Contents of this publication may not be reproduced without the written

permission of Bovie Medical Corporation.

Bovie Part Number MC-55-229-002 Rev. 0

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SAFETY PRECAUTIONS WHEN OPERATING THE GENERATOR

The safe and effective use of electrosurgery depends to a large degree on factors solely under the control of the operator. There is no

substitute for a properly trained and vigilant medical staff. It is important that they read, understand, and follow the operating

instructions supplied with this electrosurgical equipment.

To promote the safe use of the Bovie® DERM 101/102, please refer to the User’s Guide for standard operating precautions.

APPLICABLE SAFETY STANDARDS

Conforms To

ANSI/AAMI STD ES60601-1

IEC STD 60601-1-6 & 60101-2-2

Certified To

CAN/CSA STD C22.2 No. 60601-1

CONVENTIONS USED IN THIS GUIDE

WARNING:

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious

injury.

CAUTION:

Indicates a hazardous situation which, if not avoided, may result in minor or moderate injury.

NOTICE:

Indicates an operating tip, a maintenance suggestion, or a hazard that may result in product

damage.

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Theory Of Operation .............................................................................................................4-1

Block Diagram.................................................................................................................4-2

Functional Overview of Key Circuits ...............................................................................4-2

System Logic...................................................................................................................4-4

Bovie DERM 101/102 Control Signal Inputs and Outputs ..............................................4-4

Operating the Bovie DERM 101/102 ....................................................................................5-1

Inspecting the Generator and Accessories .....................................................................5-2

Service Personnel Safety................................................................................................5-2

Installation and Placement ..............................................................................................5-3

Functional Checks...........................................................................................................5-3

Unit Operations ...............................................................................................................5-5

Maintenance...........................................................................................................................6-1

Cleaning ..........................................................................................................................6-2

Periodic Inspection..........................................................................................................6-2

Fuse Replacement ..........................................................................................................6-2

Troubleshooting ....................................................................................................................7-1

Recommended Equipment for Troubleshooting..............................................................7-2

Troubleshooting the Bovie DERM 101/102.....................................................................7-2

Inspecting the Generator.........................................................................................7-2

Inspecting the Receptacles .....................................................................................7-2

Inspecting Internal Components..............................................................................7-3

Understanding Error Codes and Audio Tones.................................................................7-4

Correcting Common Problems........................................................................................7-5

Main Board Test Points ...................................................................................................7-8

Return Policy and Procedures.............................................................................................8-1

Responsibility of Manufacturer........................................................................................8-2

Returning the Unit for Service.........................................................................................8-2

Warranty ................................................................................................................................A-1

Board Drawings, Schematics, & Assemblies ....................................................................B-1

How to Order Parts from Bovie Medical Corporation .....................................................B-2

Bovie DERM 101/102 Design Breakdown and Drawing Reference...............................B-2

Bovie® Drawing and Schematic Package ......................................................................B-3

Service Guide • DERM 101/102

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LIST OF FIGURES

Figure 2 – 1

Figure 2 – 2

Figure 2 – 3

Figure 2 – 4

Figure 3 – 1

Figure 3 – 2

Figure 3 – 3

Figure 3 – 4

Figure 3 – 5

Figure 3 – 6

Figure 4 – 1

Figure 5 – 1

Figure 5 – 2

Figure 6 – 1

Layout of controls, indicators, and receptacles on the front panel..................2-2

Controls for the cut, blend, and coag modes ..................................................2-4

Location of the front panel receptacles and power switch ..............................2-5

Layout of controls and labeling on the rear panel...........................................2-6

Output power versus power setting for all modes...........................................3-8

Power setting versus voltage (Vpeak) for all modes.......................................3-8

Output Power versus Load • Bipolar 100% / 50% ..........................................3-9

Bipolar Mode waveform ..................................................................................3-9

Output Power versus Load • Monopolar 100% / 50% ....................................3-10

Monopolar Mode waveform.............................................................................3-10

Functional block diagram of the Bovie DERM 101/102 system......................4-2

Installation and placement...............................................................................5-3

Unit setup ........................................................................................................5-4

Fuse.................................................................................................................6-2

SCHEMATICS AND BOARD DRAWINGS

Main Board ..............................................................................................................................B-3

Logic Center ............................................................................................................................B-4

RF Amplifier Circuit .................................................................................................................B-5

Activation Sense Circuit (Hand, Foot, Power Up and Power Down) ......................................B-6

Power Supply ..........................................................................................................................B-7

ADC Measurement Circuit ......................................................................................................B-8

AC/DC SMPS Power Supply...................................................................................................B-9

Audio (Buzzer) Control Circuit...............................................................................................B-10

Printed Circuit Board Main ....................................................................................................B-11

Bovie DERM 101/102 Assembly ...........................................................................................B-12

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THE BOVIE® DERM 101/102

HIGH FREQUENCY DESICCATOR

This section includes the following information:

● Functional Description

● Unit Description

● Safety Precautions When Repairing the Generator

● General Warnings, Cautions, and Notices

● Active Accessories

● Fire/Explosion Hazards

● Generator Electric Shock Hazards

● Servicing

● Cleaning

CAUTION

Read all warnings, cautions, and instructions provided with this generator before using.

Read the instructions, warnings, and cautions provided with electrosurgical accessories before

using. Specific instructions are not included in this manual.

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FUNCTIONAL DESCRIPTION

The Bovie® DERM 101/102 is a multipurpose High Frequency Desiccator for use in physician’s offices and

surgi-centers. It provides unsurpassed performance, flexibility, reliability, and user convenience in one compact

package.

TheBovie® DERM 101/102 High Frequency Desiccator includes digital technology. This new technology is evident

in the self-checking circuitry and error code readouts. The DERM 101™ unit offers monopolar electrosurgical operations. The DERM 102™ unit offers monopolar and bipolar electrosurgical operations.

The following are key advantages and benefits.

Power Capabilities

Up to 10 watts of Coagulation @ 1000 Ω.

Up to 10 watts of Bipolar @ 150 Ω.

Memory

The generator automatically powers up to the last

power setting.

Self Diagnostics

These diagnostics continually monitor the unit to ensure

proper performance.

Whenever they detect a problem, medical personnel

receive audible and visual alarm responses, and the output

is suspended until the alarm condition is cleared.

UNIT DESCRIPTION

TheBovie® DERM 101/102 High Frequency Desiccator is a self-contained unit, consisting of the main enclosure and

power cord. The main components incorporated in the generator include:

• FRONT PANEL COMPONENTS Dial for controlling power output; receptacles for connecting

electrosurgical accessories; footswitch receptacle; and 7-segment display.

• REAR PANEL COMPONENTS Volume control.

• OTHER COMPONENTS Power switch (located on side of unit); power cable receptacle

(located on bottom of unit); connector to A902 pencil.

• INTERNAL COMPONENTS Main PCB

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SAFETY PRECAUTIONS WHEN REPAIRING THE GENERATOR

Before servicing the Bovie® DERM 101/102 High Frequency Desiccator it is important that you read, understand,

and follow the instructions supplied with it. Also, be familiar with any other equipment used to install, test, adjust, or

repair this generator.

General Warnings, Cautions, and Notices

WARNING

The instrument receptacles on this generator are designed to accept only one instrument at a

time. Do not attempt to connect more than one instrument at a time into a given receptacle.

Doing so will cause simultaneous activation of the instruments.

To avoid risk of electric shock, this equipment must only be connected to a supply mains with

protective earth.

CAUTIONS

Do not stack equipment on top of the generator or place the generator on top of electrical

equipment. These configurations are unstable and/or do not allow adequate cooling. Unit is

designed to be wall mounted or mounted on a mobile stand.

Provide as much distance as possible between the electrosurgical generator and other electronic

equipment (such as monitors). An activated electrosurgical generator may cause electrical

interference with them.

Do not turn the activation tone down to an inaudible level. The activation tone alerts the surgical

team when an accessory is active.

No modification of this equipment is allowed.

NOTICE

Connect the power cord to a wall receptacle having the correct voltage. Otherwise, product

damage may result.

Active Accessories

WARNINGS

Shock Hazard – Do not connect wet accessories to the generator.

Shock Hazard – Ensure that all accessories and adapters are correctly connected and that no

metal is exposed.

Associated equipment and active accessories should be selected that have a rated accessory voltage equal to or greater than the maximum output voltage.

Accessories must be connected to the proper receptacle type. In particular, bipolar accessories

must be connected to the Bipolar Instrument output jack only. Improper connection may result in

inadvertent generator activation.

CAUTIONS

Accessories must be connected to the proper receptacle type. In particular, bipolar accessories

must be connected to the Bipolar Instrument receptacle only. Improper connection may result in

inadvertent generator activation.

Examine all accessories and connections to the electrosurgical generator before use. Ensure that

the accessories function as intended. Improper connection may result in arcs, sparks, accessory

malfunction, or unintended surgical effects. Refer to the accessories instructions for use for more

detailed instructions.

Set power levels to the lowest setting before testing an accessory.

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NOTICES

To avoid incompatibility and unsafe operation, we recommend using only Bovie®/Aaron®

accessories.

During bipolar electrosurgery, do not activate the generator until the forceps have made contact

with the patient. Product damage may occur.

Fire / Explosion Hazards

WARNINGS

Explosion Hazard – Do not install the generator in the presence of flammable anesthetics, gases,

liquids, or objects.

Fire Hazard – Do not place active accessories near or in contact with flammable materials (such

as gauze or surgical drapes). Electrosurgical accessories that are activated or hot from use can

cause a fire. Use a holster to hold electrosurgical accessories safely away from personnel and

flammable materials.

Fire Hazard – Do not use extension cords.

Fire Hazard – For continued protection against fire hazard, replace fuses only with fuses of the

same type and rating as the original fuse.

Generator Electric Shock Hazards

WARNINGS

Connect the generator power cord to a properly grounded receptacle. Do not use power plug

adapters.

To avoid risk of electric shock, this equipment must only be connected to a supply mains with protective earth.

Connect the power cord to a properly polarized and grounded power source with the frequency

and voltage characteristics that match those listed on the back of the unit. Disconnect power cord

from power source to isolate the internal circuits from the supply mains.

Do not connect a wet power cord to the generator or to the wall receptacle.

To allow stored energy to dissipate after power is disconnected (caps discharge) wait at least five

minutes before replacing parts.

Always turn off and unplug the generator before cleaning.

Do not touch any exposed wiring or conductive surfaces while the generator is disassembled and

energized. Never wear a grounding strap when working on an energized generator.

When taking troubleshooting measurements use appropriate precautions such as using isolated

tools and equipment, using the “one hand rule,” etc.

Potentially lethal AC and DC voltages are present in the AC line circuitry, high voltage DC circuitry,

and associated mounting and heat sink hardware described in this manual. These potentials are

not isolated from the AC line. Take appropriate precautions when testing and troubleshooting this

area of the generator.

High frequency, high voltage signals that can cause severe burns are present in the RF output

stage and in the associated mounting and heat sink hardware. Take appropriate precautions when

testing and troubleshooting this area of the generator.

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Servicing

CAUTIONS

Read all warnings, cautions, and instructions provided with this generator before servicing.

The generator contains electrostatic-sensitive components. When repairing the generator, work at

a static-control workstation. Wear a grounding strap when handling electrostatic-sensitive

components, except when working on an energized generator. Handle circuit boards by their

nonconductive edges. Use an anti-static container for transport of electrostatic-sensitive

components and circuit boards.

Cleaning

NOTICE

Do not clean the generator with abrasive cleaning or disinfectant compounds, solvents, or other

materials that could scratch the panels or damage the generator.

Service Guide • DERM 101/102

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CONTROLS, INDICATORS, AND RECEPTACLES

This section describes the front, rear, and side panels, including all controls, indicators, receptacles, and ports.

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FRONT PANEL

Figure 2 – 1 Layout of controls, indicators, and receptacles on the front panel - DERM 101™

Figure 2 – 2 Layout of controls, indicators, and receptacles on the front panel- DERM 102™

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CONTROLS AND INDICATORS OVERVIEW

Users may control most Bovie® DERM 101/102 functions from the front panel. Each Control is plainly

marked on the front panel for quick reference. The volume control is located on the rear panel.

Normal operations involve activating the generator with either a front connected handswitch or footswitch.

The following components are the User Interface for the Bovie® DERM 101/102 High Frequency

Desiccator:

Power Switch

The rocker ON/OFF switch on the lower right corner.

The switch turns power on and off to the unit.

Power Control Knob

This rotary knob allows you to select the desired

RF power level for all modes of operation. The Power

Control Knob moves at a graduated .1 watt per notch

(incrementally) up to 10 watts.

Watts Display

The large power output display reports the generator’s

output power setting from .1 to 10 watts.

Visual LED Indictors

The blue activation indicator reports when the unit

is activated.

Audible Indicators

An activation tone sounds whenever the Bovie® DERM

101/102 High Frequency Desiccator is activated. The

volume may be adjusted to a high or low setting. The

volume adjust ment is located on the rear of the unit.

An alarm siren sounds during all alarm conditions.

The volume of this alarm cannot be adjusted.

Service Guide • DERM 101/102

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COAGULATION AND BIPOLAR CONTROLS

Figure 2 – 3 Controls for the coag and bipolar modes

Coag and Bipolar

Activation Indicator

Illuminates when you

activate Coag or

Bipolar.

Coag and Bipolar

Power Display (watts)

Indicates the power set for

Coag or Bipolar.

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Coag and Bipolar Power

Control Dial

Increases or decreases the

Coag or Bipolar power

output.

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ACCESSORY RECEPTACLES

Figure 2 – 4 Location of the front panel receptacles and power switch

Power Switch

Powers the unit

on or off.

Handpiece Holder

Securely holds

Bovie® handpiece

when not in use.

Monopolar Handswitching Receptacle

Accepts only Bovie handpieces.

Patient Return

Electrode Receptacle

Accepts only Bovie return

electrode plugs designed

for the DERM 101/102.

Service Guide • DERM 101/102

Bipolar Receptacle

Accepts only Bovie cables

for bipolar handpieces.

Footswitching Receptacle

Accepts only Bovie footswitch.

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REAR PANEL VIEW

Figure 2 – 5 Layout of controls and labeling on the rear panel

Figure 2 – 6 Rear view mounted on stand

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FRONT VIEW ON WALL MOUNT AND STAND

Figure 2 – 7 Front view on wall mount

Figure 2 – 8 Front view on stand

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SIDE VIEW LEFT AND RIGHT

Figure 2 – 9 Side view right (On/Off switch and power control knob)

Figure 2 – 10

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Side view left (pencil holster)

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SYMBOLS ON THE FRONT AND REAR PANELS

The following table lists descriptions for symbols found on the DERM units

Warning: Dangerous voltage.

Caution: Read directions for use prior to using equipment.

On (power: connection to the mains).

Off (power: disconnection from the mains).

* Do not dispose of this device in the unsorted municipal waste

stream.

Monopolar output jack (hand control pencil jack).

Bipolar output jack.

Patient Plate, for use with Monopolar modes.

Footswitch jack, for foot controlled activation of monopolar (optional)

and bipolar devices.

Type BF Equipment.

Non-ionizing radiation.

Neutral Electrode referenced to earth.

Volume control.

Explosion Risk if used with flammable anesthetics.

Manufacturer

Mandatory: Refer to instruction manual / guide

Compliant RoHS Directive (2011/65/EU)

Fuse type and rating. Slow blow (T), high capacity (H)

Conforms to European Union medical Directives 93/42/ECC and its

revision 2007/47/EC.

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Notice:

*Please note that infected medical devices must be disposed of as medical/biohazard waste and

cannot be included in used electronic equipment disposal/recycling programs.

In addition, certain electronic products must be returned directly to Bovie Medical Corporation.

Contact your Bovie® sales representative for return instructions.

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TECHNICAL SPECIFICATIONS

All specifications are nominal and subject to change without notice. A specification referred to as “typical” is within

± 20% of a stated value at room temperature (25° C / 77° F) and a nominal input power voltage.

PERFORMANCE CHARACTERISTICS

Input Power

Input Voltage

100-240 VAC ~ ± 10%

Mains line frequency range (nominal):

50 – 60 Hz

Power consumption:

28 VA

Fuses (two):

T 400mAH, 250V

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Duty Cycle

Under maximum power settings and rated load conditions (Coagulation 10 W @ 1000 Ω load), the generator is

suitable for activation times of 10 seconds on, 30 seconds off for one hour.

NOTICE

The internal temperature of the unit is constantly being monitored. If the temperature rises above

75°C an alarm sounds, the system displays an error code, and the system disables output power.

Dimensions and Weight

Width

20.8 cm (8.2 in.)

Depth

6.9 cm (2.7 in.)

Height

18.4 cm (7.2 in.)

Weight

< 1.4 kg (< 3 lbs.)

Operating Parameters

Ambient temperature range

10° to 40° C

Relative humidity

30% to 75%, non-condensing

Atmospheric pressure

70kPa to 106kPa

Warm-up time

If transported or stored at temperatures outside the operating temperature range,

allow one hour for the generator to reach room temperature before use.

Transport

Ambient temperature range

-40˚ to +70˚ C

Relative humidity

10% to 100%, including condensation

Atmospheric pressure

50kPa to 106kPa

Storage

Ambient temperature range

10˚ to 30˚ C

Relative humidity

10% to 75%, non-condensing

Atmospheric pressure

70kPa to 106kPa

Audio Volume

The audio levels stated below are for the activation tone (bipolar and monopolar) and the alarm tone at a distance of

one meter. Audio levels meet the requirements for IEC 60601-2-2.

Activation Tone

Volume (adjustable)

40 to 65 dB

Frequency

All Modes: 833Hz +/- 25Hz

Duration

Continuous while the generator is activated

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Alarm Tone

Volume (adjustable)

40 – 60 dB

Frequency

2.44 kHz +/- 25Hz 1⁄2 seconds / 1.22kHz +/- 25Hz 400-500ms 1⁄2 seconds

Duration

Continuous while the error or fault condition is present

Low Frequency (50-60 Hz) Leakage Current

Enclosure source current, ground open

< 500 µA

Source current, patient leads, all outputs

Normal polarity, intact ground: < 10 µA

Normal polarity, ground open: < 10 µA

Reverse polarity, ground open: < 10 µA

Sink current at high line, all inputs

< 10 µA

High Frequency (RF) Leakage Current

Bipolar RF leakage current

< 22 mA rms at 10 watts

Monopolar RF leakage current (additional tolerance)

< 150 mA rms

STANDARDS AND IEC CLASSIFICATIONS

Class I Equipment (IEC 60601-1)

Accessible conductive parts cannot become live in the event of a basic insulation failure because of the way in which

they are connected to the protective earth conductor.

Type BF Equipment (IEC 60601-1)

The Bovie® DERM 101/102 High Frequency Desiccator provides a high degree of protection against electric

shock, particularly regarding allowable leakage currents. It is type BF equipment.

Drip Proof (IEC 60601-2-2)

The generator enclosure is constructed so that liquid spillage in normal use does not wet electrical insulation or other

components which, when wet, are likely to affect adversely the safety of the generator.

Electromagnetic Interference

When other Bovie® equipment is placed on or beneath an activated Bovie® Medical High Frequency Desiccator, the

Bovie® DERM 101/102 High Frequency Desiccator operates without interference. The generator minimizes electromagnetic interference to video equipment used in the operating room.

Electromagnetic Compatibility (IEC 60601-1-2 and IEC 60601-2-2)

The Bovie® DERM 101/102 High Frequency Desiccator complies with the appropriate IEC 60601-1-2 and

IEC 60601-2-2 specifications regarding electromagnetic compatibility.

Service Guide • DERM 101/102

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