Erbe VIO 300 D User manual

VIO 300 D Configured for da Vinci®
User Manual
08.11
V 2.5.x
ERBE
ISI PN 551150-01 Rev. A (English)

VIO 300 D Configured for
da Vinci®
User Manual

EN ISO 9001 EN ISO 13485
User Manual Art. No. 80113-901
All rights to this User Manual, in particular rights of duplication, dissemination and translation, are reserved. No part of this
User Manual may be reproduced in any form (by photocopying, microfilming or other methods) or processed, duplicated or
disseminated by the use of electronic systems without the written consent of ERBE Elektromedizin GmbH.
The information contained in this User Manual can be changed or expanded without prior notice and without obligation on
the part of ERBE Elektromedizin GmbH.
Printed by ERBE Elektromedizin
Printed in Germany
Copyright © ERBE Elektromedizin GmbH, Tübingen 2011

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Table of Contents
80113-901  08.11
Table of Contents
1 Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safety notations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Meaning of the note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Who must read this User Manual? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Compliance with safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Structure of safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Operating errors by persons without training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Risks due to the environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Electric shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fire / explosion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Burns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Defective unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Interference caused by the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Damage to the unit and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2 Safety Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Automatic monitoring of equipment output error . . . . . . . . . . . . . . . . . . . . . . . . 19
Automatic monitoring of the ON time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Protection from operating errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
VIO 300 D example accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
4 Description of the Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Controls on the front panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Controls on the back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 Working with the Electrosurgical Unit . . . . . . . . . . . . . . . . . . . . 27
Make power connection, switch on unit, function test, the Guide window . . . . . 27
Calling up Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6 Description of receptacle hardware . . . . . . . . . . . . . . . . . . . . . . 31
Multifunctional receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7 Bipolar Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
BiClamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Electrical installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Installing the electrosurgical unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

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9 Cleaning and Disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Wipe disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Instructions for cleaning and disinfection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
10 Status Messages, Error Messages . . . . . . . . . . . . . . . . . . . . . . . 41
11 General Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
12 Information on electromagnetic compatibility (EMC) . . . . . . . . 47
Guidelines for avoiding, recognizing and rectifying unwanted electromagnetic
effects on other equipment or systems, which are the result of operating the
VIO system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
13 Maintenance, Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

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Table of Contents
80113-901  08.11
CHAPTER 1
Safety Instructions
Intended use
The Electrosurgical Generator (ESU), unit is intended to deliver High Frequency (HF) current
for the cutting and/or coagulation of tissue.
Safety notations
DANGER
indicates an imminently hazardous situation which, if not avoided, will re-
sult in death or serious injury.
WARNING
indicates a potentially hazardous situation which, if not avoided, could re-
sult in death or serious injury.
CAUTION
indicates a potentially hazardous situation which, if not avoided, may re-
sult in minor or moderate injury.
CAUTION
used without the safety alert symbol indicates a potentially hazardous sit-
uation which, if not avoided, may result in property damage.
Meaning of the note
"Note:"
Refers a) to manufacturer's information that relates directly or indirectly to the safety of
people or protection of property. The information does not relate directly to a risk or dan-
gerous situation.
Refers b) to manufacturer's information that is important or useful for operating or servicing
the unit.

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80113-901  08.11
Who must read this User Manual?
Knowledge of the User Manual is absolutely essential for correct operation of the unit.
Therefore, everyone who is concerned with
•preparing,
•adjusting,
•operating,
•disassembling, as well as
•cleaning and disinfecting
the unit must read the User Manual.
Please pay particular attention to the safety instructions in each chapter.
Compliance with safety information
Working with medical equipment is associated with certain risks to patients, medical per-
sonnel and the environment. Risks cannot be entirely eliminated by design measures alone.
Safety does not depend solely on the equipment. Safety depends to a large extent on the
training of medical personnel and correct operation of the equipment.
The safety instructions in this chapter must be read, understood and applied by everyone
who is working with the equipment.
Structure of safety instructions
The safety instructions are structured according to the following risks:
•Operating errors by persons without training
•Risks due to the environment
•Electric shock
•Fire / explosion
•Burns
•Risks due to incorrect use of the return electrode
•Defective unit
•Interference caused by the unit
•Damage to the unit and accessories
•Notes
Operating errors and incorrect installation by persons with-
out training
WARNING
Operating errors and incorrect installation by persons without
training
Persons without training can operate or install the unit incorrectly.
Risk of injury or death for patients and medical staff! Risk of damage to
property.

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1 • Safety Instructions
80113-901  08.11
¨The equipment may only be used and installed by persons who
have been trained on how to use and install it properly according
to this User Manual.
¨Training may only be carried out by persons who are suitable on
the basis of their knowledge and practical experience.
¨In the event of uncertainties or if you have any questions, please
contact ERBE Elektromedizin. You will find the addresses in the
address list at the end of this User Manual.
Risks due to the environment
CAUTION
Interference with the unit by portable and mobile HF com-
munication devices (e.g. mobile phones, WLAN equipment)
Electromagnetic waves emitted by portable and mobile HF commu-
nication devices can effect the unit.
The unit may fail or not perform properly.
¨Please see the table "Recommended separation distances be-
tween portable and mobile HF communications equipment and
the equipment" at the end of this User Manual.
CAUTION
Unsuitable temperature or level of humidity during opera-
tion
If you operate the equipment at an unsuitable temperature or level
of humidity, it may sustain damage, fail, or not perform properly.
¨Operate the equipment at a suitable temperature and level of
humidity. You will find the tolerances for temperature and hu-
midity in the Technical Data.
¨If other ambient conditions must be observed for operation of
the equipment, you will also find them in the Technical Data.
CAUTION
Unsuitable temperature or humidity in transit or storage
If you transport or store the equipment at an unsuitable tempera-
ture or level of humidity, it may sustain damage and fail.
¨Transport and store the equipment at a suitable temperature and
level of humidity. You will find the tolerances for temperature
and humidity in the Technical Data.
¨If other ambient conditions must be observed for transport and stor-
age of the equipment, you will also find them in the Technical Data.
CAUTION
Insufficient acclimatization time, unsuitable temperature
during acclimatization
If the device was stored or transported below or above a certain
temperature, it will take a certain time and temperature to acclima-
tize.
If you do not observe the rules, the device can sustain damage and fail.
¨Acclimatize the device according to the rules in the Technical Data.

1 • Safety Instructions
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80113-901  08.11
CAUTION
Overheating of the device due to poor ventilation
If ventilation is poor, the device can overheat, sustain damage, and
fail.
¨Install the device in such a way that there is an unobstructed cir-
culation of air around the housing. Installation in confined wall
recesses is prohibited.
CAUTION
Penetration of liquid into the device
The housing is not absolutely watertight. If liquid penetrates, the
device can sustain damage and fail.
¨Make sure no liquid can penetrate the device.
¨Do not place vessels containing liquids on top of the device.
Electric shock
WARNING
Defective grounded power outlet, power supply network
without proper grounding, inferior-quality power cord,
incorrect line voltage, multiple power outlets, extension
cords
Risk of electric shock and other injuries to the patient and medical
personnel! Risk of damage to property.
¨Connect the unit / the equipment cart to a properly installed
grounded power outlet.
¨Only connect the unit to a power supply network with proper
grounding.
¨Only use the ERBE power cord or an equivalent power cord for
this purpose. The power cord must bear the applicable national
test symbol.
¨Check the power cord for damage. You must not use a damaged
power cord.
¨The supply voltage must match the voltage specified on the
unit's rating plate.
¨Do not use multiple power outlets.
¨Do not use extension cords.
WARNING
Incorrect line fuse, defective device
Risk of electric shock to the patient and medical personnel! Risk of
damage to property.
¨Blown line fuses may only be replaced by a competent techni-
cian. Only replacement fuses that have the same rating as the
one specified on the unit’s rating plate may be used.
¨When a fuse has been changed, the function of the unit must be
verified. If the unit does not function properly or if there are any
concerns, please contact ERBE.

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1 • Safety Instructions
80113-901  08.11
WARNING
Connection of unit / equipment cart and power supply dur-
ing cleaning and disinfection
Risk of electric shock to the medical personnel!
¨Switch off the device. Unplug the power cord of the device/
equipment cart.
Fire / explosion
In electrosurgery electric sparks and arcs occur at the instrument. Flammable gases,
vapors, and liquids can be set alight or caused to explode.
DANGER
Flammable anesthetics
Risk of explosion to the patient and medical personnel! Risk of dam-
age to property.
¨Do not use flammable anesthetics when an operation is being
performed on the head or thorax.
¨If use is unavoidable, you must extract the anesthetics before
performing electrosurgery.
DANGER
Flammable endogenous gases in the gastrointestinal tract
Risk of explosion to the patient!
¨Extract the gases before performing electrosurgery or irrigate
with CO2.
DANGER
Combustion-supporting gases, e.g. oxygen, nitrous oxide
The gases can accumulate in materials like cotton wool or gauze.
The materials become highly flammable.
Risk of fire to the patient and medical personnel! Risk of damage to
property.
¨Do not use combustion-supporting gases when an operation is
being performed on the head or thorax.
¨If use is unavoidable, you must extract the combustion-support-
ing gases before performing electrosurgery.
¨Remove any jeopardized (e.g. cotton wool or gauze) materials
before performing electrosurgery.
¨Check the oxygen-carrying tubes and connections for leaks.
¨Check the endotracheal tubes and their cuffs for leaks.
WARNING
Active or hot instruments in contact with combustible mate-
rials
Materials like gauze, swabs, and cloths can catch fire.
Risk of fire to the patient and medical personnel! Risk of damage to
property.

1 • Safety Instructions
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¨Do not bring active or hot instruments into contact with combus-
tible materials.
¨Put instruments down in a safe place: sterile, dry, non-conduc-
tive, and easy to see. Instruments that have been put down must
not come into contact with the patient, medical personnel, or
combustible materials.
WARNING
Flammable detergents and disinfectants, flammable solvents
in adhesives used on the patient and on the device / equip-
ment cart
Risk of fire and explosion to the patient and medical personnel! Risk
of damage to property.
¨Use products that are not flammable.
If the use of flammable products is unavoidable, proceed as fol-
lows:
¨Allow the products to evaporate completely before switching on
the device.
¨Check whether flammable liquids have accumulated under the
patient, in body recesses such as the navel, or in body cavities
such as the vagina. Remove any liquids before performing elec-
trosurgery.
WARNING
Ignition of anesthetics, skin cleansers, and disinfectants in
potentially explosive atmospheres
If you place the device in a potentially explosive atmosphere, anes-
thetics, skin cleansers, and disinfectants can ignite.
Risk of fire and explosion to the patient and medical personnel! Risk
of damage to property.
¨Do not place the device in potentially explosive atmospheres.
Burns
WARNING
Damaged device, damaged accessories, modified device,
and modified accessories
Risk of burns and injury to the patient and medical personnel! Risk
of damage to property.
¨Check the unit and accessories for damage every time before
use.
¨You must not use damaged equipment or damaged accessories.
Replace defective accessories.
¨If the equipment or equipment cart is damaged, please contact
our customer service.
¨For your safety and that of the patient: Never attempt to perform
repairs or make modifications yourself. Any modification will in-
validate liability on the part of ERBE Elektromedizin GmbH.

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1 • Safety Instructions
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WARNING
HF leakage current flows through metal parts
The patient must not have contact with electrically conductive ob-
jects. That includes metal parts of the operating table, for example.
HF current can be discharged through points of contact accidentally
(HF leakage current).
Risk of burns to the patient!
¨Position the patient on dry, antistatic drapes.
¨If the drapes can become wet during the operation due to sweat,
blood, irrigation liquid, urine, etc., lay a waterproof sheet over
the drapes.
WARNING
HF leakage current flows through monitoring electrodes
HF current can be discharged through points of contact between
the skin and monitoring electrodes accidentally (HF leakage cur-
rent).
Risk of burns to the patient!
¨Position monitoring electrodes as far away as possible from the
surgical field (area where electrosurgical instruments are used).
¨Do not use needle electrodes for monitoring during electrosur-
gery.
¨Where possible, use monitoring electrodes that contain devices
to limit high-frequency current.
WARNING
HF leakage current flows through skin-to-skin points of con-
tact
HF current can be discharged through skin-to-skin points of contact
accidentally (HF leakage current).
Risk of burns to the patient!
¨Prevent skin-to-skin points of contact. For example, lay dry gauze
between the patient's arms and body.
WARNING
Unintentional activation of the instrument
Risk of burns to the patient and medical personnel!
¨Put instruments down in a safe place: sterile, dry, non-conduc-
tive, and easy to see. Instruments that have been put down must
not come into contact with the patient, medical personnel, or
combustible materials.
¨Instruments that have been put down must not come into con-
tact with the patient, not even indirectly. An instrument can
come into contact with the patient indirectly through electrically
conductive objects or wet drapes, for example.
CAUTION
Hot instruments
Even non-active instruments that are still hot can burn the patient
or medical personnel.

1 • Safety Instructions
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80113-901  08.11
¨Put instruments down in a safe place: sterile, dry, non-conduc-
tive, and easy to see. Instruments that have been put down must
not come into contact with the patient, medical personnel, or
combustible materials.
¨Instruments that have been put down must not come into con-
tact with the patient, not even indirectly. An instrument can
come into contact with the patient indirectly through electrically
conductive objects or wet drapes, for example.
WARNING
Unintentional activation of the instrument during an endo-
scopic application
If the instrument is activated and remains activated during an endo-
scopic application, the patient can suffer burns when the instrument
is removed.
All points that come into contact with the active part of the instru-
ment are at risk. The cause of unintentional activation can be a fault
in the footswitch or device or operator error, for example.
You will recognize unintentional activation from the continuous ac-
tivation signal.
Risk of burns to the patient!
¨Turn off the power switch on the electrosurgical unit immediate-
ly. Only then should the instrument be removed from the pa-
tient’s body.
WARNING
Capacitive coupling between the cords of two instruments
When one instrument is activated, current can be transferred to the
cord of another instrument (capacitive coupling).
The patient can suffer burns if the non-active but still live instrument
has direct or indirect contact with the patient.
Risk of burns to the patient!
¨Lay the cords of instruments in such a way that they are as far
apart as possible.
¨Put instruments down in a safe place: sterile, dry, non-conduc-
tive, and easy to see.
¨Instruments that have been put down must not come into con-
tact with the patient, medical personnel, or combustible materi-
als.
¨Instruments that have been put down must not come into con-
tact with the patient, not even indirectly. An instrument can
come into contact with the patient indirectly through electrically
conductive objects or wet drapes, for example.
WARNING
Activation signal not audible
You do not hear the signal when the electrosurgical unit is activat-
ed.
Risk of burns to the patient and medical personnel!
¨Adjust the activation signal so that it is clearly audible.

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1 • Safety Instructions
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WARNING
Undesirable contact between the active instrument and
metal objects in the patient's body
Contact with metal hemostats, etc.
Risk of burns to the patient!
¨Do not touch metal objects (e.g. implants) in the patient's body
with the active instrument.
Defective unit
WARNING
Undesirable rise in output level due to failure of electrosurgi-
cal unit
Risk of accidental tissue damage to the patient!
¨The device shuts off independently.
¨To guard against a possible failure of the electrosurgical unit,
have the device checked for safety at least once a year.
WARNING
Technical safety checks not being done
Risk of injury or death for patients and medical staff! Risk of damage
to property.
¨Have the device checked for safety at least once a year.
¨You must not use a device that is not safe.
WARNING
Failure of display elements
If display elements fail, you can no longer operate the device safely.
Risk of injury or death for patients and medical staff!
¨You must not use the unit.
Interference caused by the unit
WARNING
Interference with cardiac pacemakers, internal defibrillators,
or other active implants
Activation of the electrosurgical unit may affect the performance of
active implants or damage them.
Risk of injury or death for patients!
¨In the case of patients having active implants, consult the man-
ufacturer of the implant or the competent department of your
hospital prior to performing surgery.

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80113-901  08.11
CAUTION
Interference with electronic equipment due to the electro-
surgical unit
The activated electrosurgical unit can affect the performance of
electronic equipment by causing interference.
The equipment may fail or not perform properly.
¨Position the electrosurgical unit, the cords of the instruments,
and the cord of the return electrode as far away as possible from
electronic equipment.
¨Position the cords as far away as possible from the cords of elec-
tronic equipment.
CAUTION
Use of non-approved internal cables by Technical Service
This can result in the increased emission of electromagnetic waves
or reduce the immunity of the device.
The unit may fail or not perform properly.
¨Technical Service may only use the internal cables that are listed
in the service manual for the device.
CAUTION
Stacked devices
If you stack the device next to other equipment or with other equip-
ment, the devices can affect each other.
The unit may fail or not perform properly.
¨The device may only be stacked next to or with VIO series units.
¨If it is necessary to operate the device near other equipment or
stacked together with other equipment, check whether the de-
vices are affecting each other: Are the devices behaving unusu-
ally? Do errors occur?
Damage to the unit and accessories
CAUTION
Alcohol-based spray disinfectant for fast disinfection
With membrane keyboards and paint surfaces there is the risk of
cracks. Propanol and ethanol will erode surfaces.
¨Do not use these substances.
CAUTION
Alternate use of disinfectant solutions based on different
active ingredients
A color reaction may occur with plastics.
¨Do not use these substances alternately.

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1 • Safety Instructions
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CAUTION
Very long activation cycles without cooling phases
The electrosurgical unit is designed and tested for a relative ON time
of 25 % (conforming to IEC 60601-2-2). If you perform very long ac-
tivation cycles without appropriate cooling phases, the unit can be
damaged.
¨Keep to the 25 % relative ON time (see also Technical Data, Op-
erating Mode), if you operate the unit for a lengthy period.
Notes
Grounding Note: If necessary, the equipment can be connected to the external grounding sys-
tem of the room with the grounding pin on the back of the unit and/or Cart using a
connecting cable designed for this purpose. Affects of low frequency leakage cur-
rents due to a defective grounding system within the room may be eliminated
through external grounding.
Use of a defibrillator Note: The equipment conforms to the requirements of Type CF and is protected
against the effects of a defibrillator discharge.
Membrane keyboards Note: If alcohol-based disinfectants are used on units with membrane keyboards,
this remove the anti-glare finish. However, the user surfaces remain fully functional.
This does not present a hazard.

1 • Safety Instructions
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2 • Safety Features
80113-901  08.11
CHAPTER 2
Safety Features
Automatic monitoring of equipment output error
The unit is equipped with an automatic monitoring system for the HF output param-
eters. This system monitors any divergence between the actual value and the set-
point of the HF output parameters selected and emits warning signals or switches off
the HF generator if the divergence is so great that the required quality of the respec-
tive effect (CUT or COAG) is no longer guaranteed.
For the operating surgeon the display of any equipment output error allows him to
immediately see, in the event of divergence or absence of the required effect, wheth-
er this defect has been caused by the unit. With the unit, any divergence of the HF
output parameters from the HF output parameters actually selected can only be
caused by loads with an excessively low resistance, e.g. too large coagulation elec-
trodes, short circuit between active electrode and return electrode or by a defect in
the unit.
Automatic monitoring of the ON time
With proper use, a high-frequency generator is only briefly activated to carry out a
cut or coagulation using a fingerswitch, pedal or AUTO START. This generally only
takes a few seconds. A defect in the unit, in the accessories or in usage may cause
the high-frequency generator to be switched on unintentionally. To prevent major
damage being caused by accidental activation of a high-frequency generator the unit
is equipped with a monitor which automatically monitors the ON time of the high-
frequency generator.
When a predetermined maximum ON time is exceeded, the monitor emits a visual
and acoustic signal and automatically switches off the HF generator. However, the
HF generator can be switched back on at any time, resulting in renewed monitoring
of the ON time. This prevents major damage being caused by the accidental activa-
tion of an HF generator for indefinitely long periods.
Protection from operating errors
To prevent operating errors the front panel and the menus are designed so as to au-
tomatically monitor and signal illogical or incomplete settings.
All receptacles of the applied part are arranged in the receptacle strip next to the
front panel. These receptacles are designed so that only connectors of the proper ac-
cessories can be inserted (provided that only the accessories supplied or recommend-
ed by the manufacturer of the unit are used).
Whenever the power switch is switched on, an automatic test program is run inside
the unit, designed to detect and signal the following defects in the operator controls
of the unit and the connected accessories:

2 • Safety Features
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80113-901  08.11
•If a button on the front panel has short-circuited due to an error or was pressed
when the power switch was switched on, this error will be indicated acoustically
and by an error number and message after switch-on of the power switch.
•If a contact of the footswitch has short-circuited due to an error, or a pedal is
jammed or a pedal was pressed while the power switch was switched on, this
error will be indicated acoustically and by an error number and message.
The relevant error message on the display of the VIO tells you how to remedy the
error.