BOWA-electronic
BOWA ARC 250 and 303 Service Manual Ver 2.2 Oct 2013
Service Manual
110 Pages
Preview
Page 1
SERVICE MANUAL HIGH FREQUENCY SURGICAL EQUIPMENT
ARC 250
ARC 303
900-301_SM_V2.2_11068-S1-20130425-EN
ARC 250/303 Service Manual
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4
ARC 250/303 Service Manual
900-301_SM_V2.2_11068-S1-20130425-EN
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ARC 250/303 Service Manual
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Key
Key 1 2 3/4 5/6 7 8 9 10/11 12 13 14
*
15 16/17 18 19 20 21 22 23/24 25 26 27 28 29 30
31
32 33 34 35 36 37
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Front ARC250/303 “Monopolar Cut” indicator arrow (yellow) Monopolar Cut” 7-segment display Power limitation for monopolar cutting Key for the degree of scabbing during monopolar cutting "Monopolar Cut" blending factor indicatorBlend setup 0-9 “Monopolar Coag” indicator arrow (blue) “Monopolar Coag” 7-segment display Power limitation for monopolar coagulation Key/indicator for “Moderate Coagulation” current mode Key/indicator for “Forced Coagulation” current mode Key/indicator for “Spray Coagulation” current Main display: programs and information Live data, 2-line display Program key Fault status indicator EASY neutral electrode monitoring, single piece EASY neutral electrode monitoring, split “Bipolar Coag” indicator pointer (blue) “Bipolar Coag” 7-segment display Power limitation for bipolar coagulation Key/indicator for "Bipolar output" FOOTSWITCH (connection socket 31) Only for bipolar coagulation! Key/indicator for "Bipolar output" AUTOSTART (connection socket 31) Only for bipolar coagulation! On/off switch Socket for the neutral electrode (NE) Connection socket for hand operated monopolar instruments *(only for ARC 303) Connection socket for monopolar instruments with hand or foot switch, Bovie connector or 4 mm monopolar endoscope connector, or 3-pin connector Socket connector for bipolar instruments with foot switch or AUTOSTART ARC250/303 rear face Connection socket for footswitch for socket 30 and socket 31 Fibre optic signal output connector socket Fibre optic signal output connector socket Rating label Connection for equipotential bonding Power connection for cooling device connector
ARC 250/303 Service Manual
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900-301_SM_V2.2_11068-S1-20130425-EN
ARC 250/303 Service Manual
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Table of Contents
Table of Contents Key ... 6 1.
2.
3.
Using this service manual ...12 1.1.
Revision index ...12
1.2.
Validity...12
1.3.
Other applicable documents ...12
1.4.
Icons and labelling ...13 Format of warning instructions ...13
1.4.2.
Risk levels in warning instructions...13
1.4.3.
Information ...13
1.4.4.
Other symbols and marks ...14
Safety information for service technicians ...15 2.1.
Safety information ...15
2.2.
Warnings and safety instructions ...15 2.2.1.
General notes ...15
2.2.2.
Special notes ...16
2.2.3.
Working with live equipment ...16
2.2.4.
Working with the equipment switched off ...17
Construction and functionality ...18 3.1.
3.2.
8
1.4.1.
Power board ...19 3.1.1.
Mains rectifier / AC/DC Converter ...20
3.1.2.
Power supply unit (PSU) ...20
3.1.3.
Low voltage power supply ...21
3.1.4.
Generator ...23
3.1.5.
Control electronics ...25
Control board...26 3.2.1.
Sensors ...27
3.2.2.
Connectors for finger switch modules (3) ...28
3.2.3.
Connection to Relay-autostart board (5) ...28
3.2.4.
Interfaces (6)...29
3.2.5.
Tone generator / audio circuit (7) ...29
3.2.6.
MCU (8) ...29
3.2.7.
Connection to LWL board (9) ...30
3.2.8.
Footswitch input socket (10) ...30
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Table of Contents
3.2.9.
4.
Connection to front plate (11)...30
3.3.
Front plate unit ...31
3.4.
LWL board ...31
3.5.
Relay-autostart board ...32
Maintenance ...33 4.1.
Technical safety inspection (TSI) ...33 4.1.1.
4.2.
Menu programs ...34 4.2.1.
4.3.
Carrying out the TSI ...33
Overview...34
Service programs ...36 4.3.1.
Service program 10 “Connect to …”...37
4.3.2.
Service program 11 “Calibration” ...37
4.3.3.
Service program 12 “Burn In” ...38
4.3.4.
Service program 13 “Show Sys-Param” ...38
4.3.5.
Service program 14 “Delete Sys-Param”...39
4.3.6.
Service program 15 “Delete EEPROM” ...40
4.3.7.
Service program 16 “Check Ext. ADC” ...40
4.3.8.
Service program 17 “Check Int. ADC” ...42
4.3.9.
Service program 18 “Check DAC” ...42
4.3.10. Service program 19 “Check Sensors” ...43 4.3.11. Service program 20 “Set Output” ...44 4.3.12. Service program 21 “Read Input” ...45 4.3.13. Service program 22 “Set Relays” ...45 4.3.14. Service program 23 “Check SCI” ...45 4.3.15. Service program 24 “Safety Check” ...46 5.
Problem solving ...47 5.1.
Functional test of boards ...47 5.1.1.
5.2.
5.3.
Dealing with faulty boards ...47
HF equipment information messages ...48 5.2.1.
Dealing with information messages when they appear...48
5.2.2.
Classification of information messages ...48
5.2.3.
Overview of information messages and procedures ...49
5.2.4.
Key table for Information number 43 ...52
Troubleshooting and clearing faults ...53 5.3.1.
Dealing with a board fault...53
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Table of Contents
6.
5.3.2.
Faults during start-up ...53
5.3.3.
Display faults ...55
5.3.4.
Faults in the voltage generators ...56
5.3.5.
Functional faults...57
5.3.6.
Interference with other equipment ...57
Repairs...58 6.1.
Repair on site ...58 6.1.1.
6.2.
Repair in the factory ...59 6.2.1.
7.
Ordering of spares ...58
ARC 250/303 fault analysis form ...60
Removal and insertion of parts ...63 7.1.
Mains fuses ...64
7.2.
Opening and closing the HF equipment ...65
7.3.
Power board ...66
7.4.
Low voltage power supply ...68
7.5.
Fingerswitch module...69
7.6.
Control board...70
7.7.
Relay-autostart board ...72
7.8.
Poag connection...74
7.9.
Equipment connecting plug ...75
8.
Parts list ...76
9.
Technical specifications ...82
10.
APPENDIX TSI test report ...85 10.1.
Test instructions for TSI ...87 10.1.1. Visual inspection (see TSI record sheet) ...88 10.1.2. Functional inspection (see TSI record sheet) ...89 10.1.3. EASY neutral electrode monitoring (see TSI record sheet) ...93 10.1.4. Measuring the Cut / Coag mode od HF output power (see TSI record sheet)...94 10.1.5. Electrical tests (see TSI record sheet) ...96
10.2.
Instructions for service program 11 “Calibration” ...101 10.2.1. Call service program 11 “Calibration” ...101 10.2.2. Power supply setup...102 10.2.3. Monopolar setup ...103 10.2.4. Bipolar setup ...106
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Table of Contents
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1 Using this service manual
1.
Using this service manual This service manual is a part of the product. BOWA electronic GmbH & Co will accept no liability or warranty for any damage and harmful consequences caused due to noncompliance with the service manual.
Carefully read through the service manual before using the equipment.
Keep the service manual throughout the lifetime of the product.
Keep the service manual available for service technicians. Pass on the service manual to all subsequent owners/users of the product.
1.1.
Update the service manual with any amendments provided by the manufacturer.
Revision index Software version
Last revised
2.2
2013 / 02
1.2.
Validity
This service manual applies only to the product indicated on the title page.
1.3.
Other applicable documents Pay attention to other applicable documents in the attachments or in the other information.
Other applicable documents are:
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Appendix (optional)
Operating instructions, especially Sections 4 & 11.
ARC 250/303 Service Manual
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1 Using this service manual
1.4.
Icons and labelling
1.4.1.
Format of warning instructions ATTENTION Type, source and consequences of the risk (personal injury)!
Precautions for risk prevention.
NOTE Type, source and consequences of the risk (damage to property)!
1.4.2.
1.4.3.
Precautions for risk prevention..
Risk levels in warning instructions Symbol Risk level
Probability of occurrence
Consequences of noncompliance
DANGER
Immediate risk
Death, serious injuries
WARNING
Possible risk
Death, serious injuries
CAUTION
Possible risk
Minor injuries
NOTE
Possible risk
Damage to property
Information Additional information, to facilitate working with the HF equipment.
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1 Using this service manual
1.4.4.
Other symbols and marks Symbol or mark
Meaning
Prerequisite for an activity
Activity with one step
1.
Activity with several steps in strict sequence
2. 3.
Result of preceding activity
List (first level)
14
List (second level)
High-lighting
Emphasis
... (see Section xxx, P. xxx)
Cross reference
... key 35
Emboldened numbers (here: 35) refer to the schematic diagram of the equipment and the related key
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2 Safety information for service technicians
2.
Safety information for service technicians BOWA-electronic places great emphasis on safety when working with electro-surgical equipment. This section contains information on:
Safety instructions
Warning notes
The safety instructions in the User Manual contain information relevant to correct practice when working with high-frequency equipment.
2.1.
Safety information
Electro-surgical equipment is subject to strict inspections by specially trained personnel. Only experienced and trained personnel may work with HF equipment. BOWA expects that the HF equipment will be maintained by qualified or authorised personnel. Service technicians must be trained in the basic principles, maintenance regulations and risks of HF equipment and thus entrusted to be safe and reliable in avoiding danger to patients, personnel and equipment.
2.2.
Warnings and safety instructions
2.2.1.
General notes
Before using the HF equipment, carry out the appropriate self-test procedure (see User Manual).
Position the HF equipment safely, do not place it on top of electrical equipment.
Do not place any objects (e.g. tools) on the HF equipment.
Avoid harmful interference effects, by placing the equipment as far away as possible from other electrical equipment.
Take suitable safety precautions before working with the HF equipment, use isolating transformers, insulated tools and materials.
Connect the supply only to the socket provided.
Set the activation signal volume loud enough to be heard.
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2 Safety information for service technicians
2.2.2.
Special notes
If necessary, the HF equipment can be connected to the potential equalisation system by means of an earthing cable.
Replace components only with components of the same type and quality.
Use antistatic containers to transport components that could be damaged by static electricity.
2.2.3.
Working with live equipment DANGER Since the equipment components are not isolated against intrusion of foreign objects, there is high risk of electric shock with fatal consequences.
Work may be carried out only by qualified or authorised personnel.
Connect the HF equipment directly to an earthed socket. Do not use mains extension cables, adapters or multi-way sockets.
Use a 1000 VA isolating transformer if you are working on the equipment when it is open.
Ensure that the HF equipment and all its accessories are kept dry.
Do not touch any unprotected cables or conducting plates.
Do not use any earthing bands when working on live HF equipment.
Overheated or unsuitable components or inflammable materials may hold the risk of fire or explosion.
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Ensure that the HF equipment has sufficient cooling.
Do not use any inflammable materials in the presence of the HF equipment, such as anaesthetics, gases or fluids.
Remove any heated item from the HF equipment and keep it away from equipment and personnel.
ARC 250/303 Service Manual
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2 Safety information for service technicians
2.2.4.
Working with the equipment switched off
The components are not protected against external access. There is a risk of electric shock from electrically charged components even after the equipment is switched off.
Switch off the HF equipment and withdraw the plug at least 5 minutes before commencing any service work. Check for absence of voltage by measuring the DC voltage between measuring points X8 and X10 on the power board (in the mains rectifier area, see Fig. 3-2). Use earthing and wrist straps and electrostatic discharge (ESD) mats, to prevent damage to the electronic components.
The HF equipment can be damaged by incorrect use of tools and associated materials.
Do not clean the HF equipment with cleansing agents, which could damage or scratch the parts.
Follow the cleaning instructions in the User Manual.
When carrying out maintenance work, also follow the warning and safety instructions in the User Manual.
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3 Construction and functionality
Construction and functionality
3.
The HF equipment consists of several sub-assemblies connected together as blocks or modules:
Power board (70151)
Control board (70251)
Relay-autostart board (70249) Front plate (70128)
LWL board (70099)
The block diagram gives an overview of the components and their functions. 1P 70064 1P 70065
POAG 10347
Mains input 10348
Upper board Power board 70151
2P 70068
X708 X709
Mains switch
X781 X780
2P 70166
Switch-mode J2 power supply 10665
J1 5P 70159
Sheet metal 10667 / 10668
5P 70159
X6/X7
J2
X2/X3
J3
JPC2
6P 70158
X4/X5
26P 70060
J3
X7/X8
JPC2
Lower board Control board 70251
J2
JP6
Fingerswitch module 70248 TP8 TP1
JPX4/JPX5
J4
5P 70163
JPC3
JP4 JP1
26P 70164
Fingerswitch module 70248 TP8 TP1
Front plate 70128
5P
4P 70105
1P 70064 JP17
JPX1
JP16 JPX8 JPX9 JPX6
JPX7
5P 70255
X4 X6
8P 70275
(only for GastroCut option)
LWL-board 70099
Footswitch socket 70254
JPX2/JPX3
JP18
JP7
JP16 JP17
JP6 JP15 JP2 JP3
JP4
Relais-autostart board 70249 JP11
NE socket 70199
JP9 JP10
Monopolar socket 70195
JP14
JP12 JP13
Monopolar socket 70195
Bipolar socket 70197
Figure 3-1: Block diagram
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3 Construction and functionality
3.1.
Power board
The power board contains all the circuits required to generate the HF power from mains-frequency current. The power board is composed of various individual functions:
Mains rectifier (1)
Power supply (2)
Low voltage supply (3)
Generator (4)
Control electronics (5)
2
1
5
3 4 Figure 3-2: Power board (70151)
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3 Construction and functionality
3.1.1.
Mains rectifier / AC/DC Converter
The mains rectifier is connected to the incoming supply via the mains switch with integral mains filter. It converts the mains voltage (AC) into two DC voltages (±160V) for the switch-mode power supply. The supply voltage can be set between 115V and 230V via bridging contacts (see table below).
Figure 3-3: Mains rectifier
Supply voltage Bridge Pin1-Pin2 Bridge Pin2-Pin3 115V 230V
3.1.2.
X X
Power supply unit (PSU)
The power supply unit is a full-resonance switch-mode power supply, with output voltage regulated by the MCU. IT supplies output voltages between 0V and 380V.
Figure 3-4: Power supply unit
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3 Construction and functionality
3.1.3.
Low voltage power supply
Figure 3-5: Low voltage power supply The low voltage power supply supplies all the boards with the required low voltage power. It can accept a wide range of inputs, from 100V-240VAC, and generates DC voltages of +5V, +15V and -15V. Layout of J2 connectors on the power board:
Pin
Voltage
Test point
1
+5V
TP33
2
+5V
TP33
3
GND
TP1
4
GND
TP1
5
-15V
TP34
6
+15V
TP32
All intermediate circuits that are connected here are earthed here. Output parameters of low voltage power supply
Output voltage
Max. output current Max. output power
-15V
0.5A
7W
+15V
2.5A
37W*
+5V 8A 40W* * The total aggregate output power may not exceed 60W
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