Valleylab LigaSure Manuals

Valleylab LigaSure Manuals

Manuals and User Guides for Valleylab LigaSure. We have 1 Valleylab LigaSure manual available for free PDF download: Service Manual

Valleylab LigaSure Service Manual

Valleylab LigaSure Service Manual (168 pages)

Vessel Sealing Generator

Brand: Valleylab | Category: Medical Equipment | Size: 10.01 MB

Table of Contents

Conventions Used in this Guide
4
Table of Contents
6
Chapter 1. Service Personnel Safety

12
- Safety Information
  13
- Warnings, Cautions, and Notices
  13
  - General
    13
  - Active Accessories
    14
  - Fire/Explosion Hazards
    14
  - Electric Shock Hazards
    14
  - Servicing
    15
  - Calibration
    16
  - Cleaning
    16
Chapter 2. Introduction

18
- General Description
  19
- Vessel Sealing
  19
- Bipolar Operation
  20
- Instant Response Technology
  20
Chapter 3. Controls, Indicators, and Receptacles

22
- List of Components
  23
- Front Panel
  24
- Rear Panel
  29
Chapter 4. Technical Specifications

32
- Performance Characteristics
  33
  - General
    33
  - Dimensions and Weight
    33
  - Operating Parameters
    33
  - Transport and Storage
    34
  - Duty Cycle
    34
  - Internal Memory
    34
  - Audio Volume
    34
  - Serial Port
    35
  - RF Activation Port
    36
  - Expansion Port
    36
  - Low Frequency (50-60 Hz) Leakage Current (AAMI HF-18-1993)
    37
  - High Frequency (RF) Leakage Current (IEC 60601-2-2)
    37
  - Input Power
    38
  - Power Cord Specification
    38
- Standards and IEC Classifications
  39
- Output Characteristics
  45
  - Maximum Generator Output
    45
  - Output Waveform
    46
- Output Power Vs. Impedance Graphs
  48
Chapter 5. Principles of Operation

50
- Block Diagram
  51
- Functional Overview
  52
  - Vessel Sealing
    52
  - Bipolar Operation
    52
  - Instant Response Technology
    52
- Control Board
  53
  - Microcontrollers
    53
  - Feedback Microcontroller
    54
  - Feedback Microcontroller Memory
    54
  - Shared RAM
    55
  - I/0 Expansion
    55
  - Keyboard Interface and Activation Inputs
    55
  - Power Supply Supervisor Circuit
    55
  - A/D and D/A Conversion
    56
  - Waveform Generation (T_ON)
    56
  - T_ON Average Check
    56
  - Audio Alarm
    57
  - Serial Interface
    57
  - Dosage Error Algorithm
    57
  - Instant Response Algorithm
    58
- Front Panel
  59
  - Membrane Keyboard
    59
- Power Switch
  
  59
  - Display Board
    59
    
    RF Indicator Lamps
    59
    
    LED and Seven-Segment Display Drivers
    60
    
    Regrasp Display
    61
    
    Mode Select and Power Control Switches
    61
  - Footswitch Board
    62
    
    Footswitch Decode Circuit
    62
    
    Audio Circuit
    63
  - High Voltage (HV) Power Supply Board
    64
    
    Power Entry Circuit
    64
    
    Auto Mains Switching Circuitry
    64
    
    AC/DC Converter
    64
    
    DC/DC Switching Regulator
    65
    
    Thermal Sensing (High Temperature Limit)
    66
  - RF Board
    67
    
    Operative Modes
    68
    
    RF Driver
    69
    
    RF Output
    69
    
    RF Output Relays
    70
    
    EKG Output Relay
    70
    
    Primary Sense Circuits
    71
    
    Redundant Sense Circuits
    72
    
    Single Fault Protection Circuit
    73
    
    Heat Sink
    74
    
    Isobloc Circuit
    74
    
    Integration Functions
    75
  - Smart Connector Boards
    77
Chapter 6. Setup, Tests, and Adjustments

78
Chapter 7. Troubleshooting

98
- Inspecting the Generator
  99
  - Inspecting Receptacles
    99
  - Inspecting Internal Components
    101
- Correcting Malfunctions
  102
- Responding to System Alarms
  107
Chapter 8. Replacement Procedures

120
- Safety
  121
- Map of Major Components
  122
- Cover
  123
  - Tools Needed
    123
  - Remove the Cover
    123
  - Re-Install the Cover
    124
- High Voltage (HV) Power Supply Board
  124
  - Tools Needed
    124
  - Remove the High Voltage Power Supply Board
    124
  - Install a New HV Power Supply Board
    126
- Control Board and Battery
  128
  - Tools Needed
    128
  - Remove the Control Board
    128
- Replacing the Battery
  130
  - Tools Needed
    130
  - Procedure
    130
  - Install the Control Board
    131
- Footswitch Board
  132
  - Tools Needed
    132
  - Remove the Footswitch Board
    132
  - Install a New Footswitch Board
    132
- Low Voltage (LV) Power Supply Board
  134
- Front Panel and Display Board
  136
  - Tools Needed
    136
  - Remove the Front Panel
    136
  - Remove the Display Board
    138
  - Install the Display Board
    139
  - Power Switch
    141
  - Install a New Power Switch
    143
- RF Board and Heat Sink
  144
  - Remove the Heat Sink
    147
  - Install the RF Board
    148
- Power Entry Module
  149
  - Install the Power Entry Module
    150
- Fuses
  151
  - Three Fuses on the RF Board
    152
  - Repair Policy
    154
Chapter 9 . Repair Policy

155
- Responsibility of the Manufacturer
  155
- Returning Circuit Boards
  157
- Service Parts
  158
Chapter 10 . Service Parts

159
- Ordering Replacement Parts
  159
- List of Parts
  160
  - Generator Assemblies
    161
  - Front Panel Assembly
    162
  - High Voltage Power Supply Board Assembly
    163
  - RF Board Assembly
    164
  - Control Board Assembly
    165

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