Get Your Fanuc Alarm Manual PDF | Instant Download


Get Your Fanuc Alarm Manual PDF | Instant Download

The term identifies a specific type of technical documentation pertaining to FANUC industrial robots and automation systems. This document, typically formatted as a Portable Document Format (PDF) file, catalogs and explains the various error and warning messages that a FANUC system might display during operation. For example, it will list alarm codes like “SRVO-001 Operator Panel E-Stop” and provide a detailed explanation of the cause and recommended corrective actions.

Accessing such a document is critical for troubleshooting and maintaining FANUC-controlled machinery. It allows technicians and engineers to quickly diagnose problems, minimizing downtime and optimizing system performance. Historically, these resources were provided in printed form, but the digital version enables faster access and searchability, improving efficiency in resolving operational issues. Its utilization directly contributes to the reliability and longevity of automated manufacturing processes.

The following sections will delve into the content typically found within such a guide, explore the information available for different types of alarms, and outline how to effectively utilize the guide for rapid issue resolution and preventive maintenance procedures related to FANUC systems.

1. Alarm Code Identification

Every blinking light, every abrupt halt of a robotic arm, every cryptic message displayed on the teach pendant all are symptoms, outward signs of potential problems lurking within a FANUC automation system. The key to deciphering these symptoms lies in the precise Alarm Code Identification. This is where the specified documentation becomes invaluable. Each numerical or alphanumeric code represents a specific fault, a distinct area of malfunction. Without proper identification, a technician might spend hours, even days, chasing phantom issues, replacing perfectly functional components while the true source of the problem festers, unaddressed.

Imagine a scenario on a high-volume automotive assembly line. A robot tasked with welding body panels suddenly stops, displaying alarm code MOTN-035, “Joint speed limit error.” Without consulting the reference documentation, the maintenance team might suspect mechanical failure in the arm’s joints, initiating a lengthy and costly inspection. However, the manual clarifies that this alarm often points to an incorrectly programmed trajectory, pushing the robot’s joint speeds beyond their permissible limits. A simple adjustment to the robot’s program, guided by the manual’s explanation and recommended solutions, restores the system to full operation within minutes, averting significant production losses. The effect of precise Alarm Code Identification, supported by the information within the manual, is, in this case, directly translatable to tangible cost savings and increased operational efficiency.

The accurate identification of alarm codes is not merely a matter of convenience; it is the bedrock of effective troubleshooting and maintenance. The manual is engineered as a comprehensive reference tool, where each code acts as an entry point to a wealth of diagnostic information. Challenges remain in ensuring technicians are properly trained to interpret these codes and apply the guidance effectively. However, with dedicated training and a commitment to utilizing these resources, manufacturers can transform potential downtime disasters into manageable incidents, significantly enhancing the reliability and productivity of their FANUC automation systems. The success of modern automated manufacturing hinges, in no small part, on the diligent and informed use of this critical resource.

2. Troubleshooting Procedures

The hum of the FANUC robot, once a constant reassurance of productive motion, now held a menacing silence. The alarm, a stark red glare on the teach pendant, displayed code SRVO-202, “Servo error excess.” This was more than a simple glitch; it threatened to halt an entire production line dedicated to manufacturing precision medical devices. The shift supervisor, a veteran of countless robot breakdowns, knew the solution resided not in brute force or guesswork, but within the hallowed pages of the designated document. He instructed his most experienced technician, Maria, to retrieve the digital file and begin the diagnostic process.

Maria, familiar with the robot’s intricacies, navigated directly to the troubleshooting section associated with SRVO-202. The manual outlined a series of potential causes: faulty servo amplifier, damaged motor cable, or, most concerning, mechanical binding within the robot’s joint. Each cause had a corresponding set of diagnostic steps, from voltage checks on the amplifier to careful observation of the robot’s movement under manual control. Following the procedures meticulously, Maria discovered a frayed wire in the motor cable of the robot’s elbow joint. This seemingly insignificant imperfection was disrupting the servo signal, leading to the error. Without the systematic approach outlined in the manual, the team might have overlooked this subtle issue, potentially replacing expensive components unnecessarily or, worse, causing further damage to the robotic system. The structured troubleshooting significantly shortened the diagnostic timeline, preventing extended manufacturing disruptions and cost increases.

The incident underscored the intrinsic connection between troubleshooting procedures and comprehensive documentation. The referenced document is more than a list of error codes; it is a roadmap for restoring functionality. While experience plays a vital role, a systematic approach, driven by the guidelines provided, minimizes guesswork and maximizes efficiency. This understanding reinforces the value of investing in thorough documentation and training programs that equip technicians with the ability to effectively utilize these resources. The silence on the production line was broken, not by a lucky fix, but by the informed and disciplined application of troubleshooting procedures, restoring the rhythm of automated manufacturing.

3. System Downtime Reduction

The cavernous factory floor, usually alive with the whirring of machines and the rhythmic clang of metal, stood eerily silent. A critical FANUC robot, a linchpin in the automotive assembly line, had ground to a halt, its teach pendant displaying a cryptic alarm code. Each minute of inactivity translated into lost production, escalating costs, and a looming deadline for a major client. The plant manager, a seasoned veteran of countless production crises, understood the gravity of the situation: system downtime was the enemy, and its rapid reduction was paramount. The solution, he knew, lay within the digital archives, specifically, in the systematic application of the information contained within the document. Its prompt accessibility and effective use were direct drivers of the resumption of operations.

The alarm code indicated a potential issue with the robot’s encoder. A hastily assembled team of technicians, armed with laptops displaying the relevant section of the manual, began a systematic process of elimination. The documented troubleshooting steps guided their actions: checking power supplies, inspecting cable connections, and finally, testing the encoder itself with a multimeter. The manual’s clear diagrams and precise voltage specifications allowed them to quickly isolate the problem: a faulty encoder, damaged beyond repair. The manual further provided the exact part number for a replacement and outlined the procedure for encoder replacement and calibration. Because the manual provided the proper avenues to a solution, the company was able to take the proper course of action. The team managed to replace the faulty encoder and recalibrate the robot within a few hours, averting a potential shutdown of the entire assembly line.

This incident underscored the profound connection between readily available reference materials and system uptime. The reduction of downtime wasn’t simply about fixing a broken robot; it was about having the right information at the right time, presented in a way that facilitated rapid diagnosis and repair. The value of the resource extended beyond immediate crisis management; it served as a knowledge repository, enabling technicians to learn from past incidents and implement preventative maintenance procedures to minimize future disruptions. The factory floor hummed back to life, not through luck or guesswork, but through the deliberate and effective use of this essential resource, a silent testament to the power of knowledge in the relentless pursuit of operational efficiency.

4. Preventative Maintenance

The relentless rhythm of automated production masks a delicate balance. Every robotic arm, every servo motor, every electrical connection is subject to wear and tear, a gradual erosion of performance that, if left unchecked, culminates in catastrophic failure. Preventative maintenance, the proactive care and inspection of equipment, stands as a bulwark against this inevitable decline. The referenced resource plays a central role in this strategy, transforming it from a reactive fire drill to a calculated and efficient process. Alarm codes, typically viewed as harbingers of trouble, can also serve as early warning signs, indicators of impending failure detectable during routine inspections. A specific alarm, triggered intermittently under heavy load, might point to a weakening servo motor, allowing for timely replacement before complete system shutdown occurs. The manual provides the context to understand the genesis and trajectory of problems, offering a holistic perspective.

Consider a high-speed packaging line, where a FANUC robot tirelessly packs delicate electronic components into shipping containers. The preventative maintenance schedule, guided by the manual, includes regular checks of the robot’s joints for wear and tear. Technicians scrutinize the data logs, searching for subtle shifts in motor current or deviations from programmed trajectories. These seemingly minor anomalies, when cross-referenced with the alarm code descriptions, can reveal early signs of joint degradation, prompting preventative measures such as lubrication, component replacement, or complete overhaul. Without the manual’s detailed information on alarm code causes and effects, these early warnings would be easily missed, leading to unscheduled downtime and potential damage to valuable components. Accessing the manual’s instructions facilitates proactive intervention, preventing expensive system failures.

Preventative maintenance, informed by the knowledge contained within these guides, transcends the simple act of fixing broken equipment. It transforms into a data-driven, proactive approach to asset management. By understanding the triggers and consequences of alarm codes, maintenance teams can anticipate failures, schedule repairs during planned downtime, and optimize the lifespan of their robotic systems. The manual’s contribution extends beyond reactive troubleshooting; it empowers organizations to cultivate a culture of preventative care, maximizing the productivity and reliability of their automated manufacturing processes. The challenge lies in consistently implementing these procedures and ensuring that technicians are properly trained to interpret the subtle nuances of alarm code data. However, the rewards – reduced downtime, lower repair costs, and increased operational efficiency – are substantial, solidifying the manual’s critical role in modern manufacturing environments.

5. Safety Guidelines

The imposing FANUC robot, a marvel of engineering prowess, stood dormant. Its articulated arm, capable of lifting tremendous weight with exacting precision, was now still, a consequence of an alarm triggered deep within its control system. The safety light, usually a reassuring green, pulsed a warning red. The technician, seasoned in the art of robotic maintenance, approached with caution, the electronic document held firmly in hand. This was not merely a technical issue; it was a potential hazard, a situation demanding strict adherence to safety protocols. Within the document resided the key to understanding not only the fault, but also the specific safety precautions required to mitigate any risks involved in the diagnostic process. The technician knew that circumventing or neglecting those guidelines could have dire consequences.

The alarm code indicated a servo fault in the robot’s wrist joint. The corresponding section detailed the procedures for safely disabling the servo power, preventing unexpected movement during inspection. It also warned of the potential for stored energy in the drive capacitors, a hazard that could deliver a dangerous electrical shock. The technician, following the manual’s instructions with meticulous care, first isolated the robot from the power source, verifying the complete discharge of the capacitors with a specialized meter. Only then, confident in the system’s safe state, did the technician begin to troubleshoot the fault, discovering a damaged cable that had short-circuited the servo motor. The manual’s detailed schematics and clear warnings about potential hazards proved invaluable, preventing a potentially serious injury.

This incident highlights the intrinsic connection between safety guidelines and robotic maintenance. The document is not merely a technical reference; it is a safety manual, a critical tool for protecting personnel from the inherent dangers of working with powerful automated machinery. Alarm codes serve as prompts, reminding technicians to consult the safety section and adhere to the recommended precautions. The challenge lies in ensuring that technicians are not only trained to diagnose faults, but also instilled with a deep respect for safety protocols. The ultimate goal is to create a work environment where safety is not an afterthought, but an integral part of every maintenance procedure, guided by the knowledge and warnings contained within the essential electronic document. This ensures the well-being of personnel and maintains the integrity of the robotic system, a harmonious balance of technology and safety.

6. Parameter Settings

The machine shop floor fell silent, a stark contrast to its usual cacophony. The newly installed FANUC-controlled milling machine, hailed as the next step in efficiency, sat motionless. A string of alarms blinked ominously on the control panel, a digital barrier preventing operation. Initial attempts to resolve the issue proved futile. The technicians, despite their expertise, struggled to understand the root cause. The problem, they soon discovered, wasn’t a mechanical failure or a software glitch, but a subtle discrepancy in the parameter settings. These numerical values, often hidden deep within the control system, dictated the machine’s operational behavior, from motor acceleration rates to safety limits. Incorrect settings, entered during initial setup, triggered the alarms, rendering the machine unusable. The solution rested not in replacing parts or rewriting code, but in meticulously reviewing and correcting these values, guided by the precise specifications detailed within the designated document.

The guide acts as a Rosetta Stone, translating the cryptic language of alarm codes into actionable insights. Each alarm, triggered by a parameter violation, pointed to a specific section within the manual. These sections provided not only the default values for the affected parameters but also a detailed explanation of their function and potential impact on machine performance. The technicians, working systematically through the alarms, compared the actual settings to the recommended values, identifying several discrepancies. A safety limit, set too low, triggered an over-travel alarm, preventing the machine from reaching its full range of motion. An acceleration rate, set too high, caused the servo motors to overload, resulting in a separate set of error messages. By carefully adjusting these parameters, guided by the manual’s instructions and warnings, the technicians gradually resolved the alarms, bringing the milling machine back to life. The machine resumed operation, its movements precise and efficient, a testament to the importance of correct parameter settings.

The experience underscored a crucial lesson: the performance and reliability of FANUC-controlled machinery depend not only on hardware and software but also on the meticulous configuration of its parameter settings. The document serves as the definitive reference, providing the essential knowledge for understanding and adjusting these values. Challenges remain in ensuring that technicians are adequately trained to interpret the manual’s instructions and understand the implications of parameter changes. However, the benefits reduced downtime, optimized performance, and enhanced safety are substantial, making the manual an indispensable tool for any organization operating FANUC automation systems. The silent factory floor returned to its bustling rhythm, a tangible reminder of the power of precise parameter settings and the critical role of the associated documentation.

7. Software Versions

Deep within the automated factory, a silent battle unfolded. The FANUC robots, normally synchronized in a ballet of precision, began to falter. Alarms flashed erratically, their cryptic codes hinting at an underlying problem. The head technician, a veteran of countless system upgrades and software patches, suspected the culprit: a recent software update, intended to improve performance, was instead sowing chaos. He knew the solution wasn’t in blindly replacing components or rewriting code, but in understanding the delicate interplay between the system’s software and the corresponding documentation. Each software iteration, designated by a specific version number, brought with it a unique set of operating parameters, compatibility requirements, and, crucially, a revised edition of the troubleshooting guide. The technicians immediate thought: “I need the correct alarm guide!”

The robot in question, operating under software version R-30iB Plus, displayed alarm code SRVO-062, “Brake abnormal.” The factory’s standard troubleshooting procedure, based on an older R-30iA manual, suggested a faulty brake resistor. The technician, however, recalled a service bulletin detailing a known issue with the R-30iB Plus software: a false alarm triggered by a sensitive brake monitoring circuit. The bulletin, accessible through the FANUC support portal, specifically advised updating the servo software to a newer revision. Heeding this advice, he initiated the software update. After the update was complete, the robot sprang back to life, the alarm vanished, and the production line resumed its rhythmic activity. The technician had just witnessed first hand the importance of software versions and their respective alarm guides.

The incident highlighted a critical reality: the document’s value hinges on its relevance to the specific software version running on the FANUC system. An outdated guide, while potentially useful for general troubleshooting, could lead to incorrect diagnoses, unnecessary repairs, and prolonged downtime. The challenge lies in ensuring that technicians have access to the correct version of the document, readily available and easily searchable. Modern automation systems often feature integrated documentation portals, automatically linking alarm codes to the corresponding software version’s manual. This integration, while a significant advancement, requires diligent maintenance, ensuring that the software and its associated documentation are always in sync. The seamless operation of automated manufacturing depends on more than just the machinery; it depends on the effective management of its software and the diligent use of its accompanying reference materials. Ensuring the correct versioning across the software, control system, and the “fanuc alarm manual pdf” is paramount to swift, correct, and effective operation.

8. Hardware Components

The network of wires, motors, and circuit boards that animate a FANUC robot are subject to the ravages of time, environmental stressors, and the sheer intensity of repetitive motion. When these physical components falter, the “fanuc alarm manual pdf” becomes an indispensable resource. It’s not merely a guide to software glitches, but a detailed roadmap for diagnosing and resolving hardware-related failures, providing the information needed to determine courses of action regarding the tangible elements of the FANUC system.

  • Motor and Encoder Failures

    Imagine a scenario: a FANUC robot arm stutters mid-motion, triggering a “Servo Error” alarm. The guide’s troubleshooting section directs technicians to examine the servo motors and their associated encoders. Detailed schematics show the location of each component, and diagnostic procedures guide the use of multimeters to check for voltage irregularities. The guide explains that if the encoder is damaged, the control system cannot accurately track the motor’s position, leading to the alarm. The guide specifies acceptable values and replacement procedures, bridging the gap between alarm code and hardware diagnosis.

  • Cable and Connector Degradation

    A recurring “Communication Error” alarm plagues a welding robot, disrupting the workflow. The user manual’s detailed descriptions of the robot’s wiring harness and connector types become crucial. Technicians can visually inspect the cables for fraying or damage and use the guide’s pinout diagrams to test continuity. The alarm manual underscores the fact that vibration and constant flexing can weaken connections, causing intermittent signals and triggering the error. Without the schematics and testing procedures, identifying the source of the communication breakdown becomes a time-consuming and potentially fruitless endeavor.

  • Power Supply Malfunctions

    An entire robotic cell shuts down, displaying a cascade of seemingly unrelated alarms. The maintenance team, consulting the document, focuses on the power supply unit, the central nervous system feeding electricity to all components. The guide contains detailed specifications for voltage and current outputs and troubleshooting steps for diagnosing power supply failures. It warns of the dangers of working with high-voltage components and emphasizes the importance of proper grounding. The error’s explanation helps the team identify if there are cascading faults across the entire operation.

  • Circuit Board Issues

    An intermittent “System Failure” alarm, accompanied by erratic robot behavior, suggests a problem with one of the control system’s circuit boards. The referenced PDF provides detailed diagrams of the circuit board layout, identifying key components and test points. It might direct the technician to check for overheating, loose connections, or damaged capacitors. The alarm, once identified in the code list, then specifies particular hardware causes to investigate. The manual’s insights are important because they can guide circuit board replacement, saving considerable time in the process of diagnosis.

These examples highlight a common truth: understanding the hardware components of a FANUC robot is inextricably linked to the effective use of the designated technical document. The alarm codes are not abstract symbols; they are pointers to potential hardware failures. The document provides the essential bridge, enabling technicians to translate error messages into actionable diagnoses and effective repair strategies, ultimately minimizing downtime and maximizing the lifespan of the automated system. The synergy between physical components and the digital documentation is critical for maintaining the precision and reliability of modern robotic automation.

Frequently Asked Questions Regarding FANUC Alarm Information

The following seeks to address prevalent misconceptions concerning access and utilization of error documentation for FANUC robotic systems. These inquiries reflect common challenges encountered by maintenance personnel and automation engineers alike, and are presented within a context of practical application.

Question 1: Where does one reliably obtain the definitive guide tailored to a specific FANUC robot model?

Locating the precise documentation requires diligence. A sprawling online search often yields outdated or incomplete files. The most reliable avenue remains the official FANUC Robotics website or direct contact with their support team. Ensure the document’s publication date aligns with the robot’s manufacturing date, as alarm codes and troubleshooting procedures evolve with each hardware and software iteration. A misstep here can send a technician down a diagnostic rabbit hole, chasing phantom problems with obsolete solutions.

Question 2: How is the information used to differentiate between a critical system fault and a minor operational nuisance?

Not all alarms are created equal. Some signal imminent system failure, demanding immediate intervention. Others reflect transient conditions, easily resolved with a simple reset. The key lies in understanding the alarm severity level, often indicated within the manual’s alarm description. A “SERVO OFF” alarm, for instance, necessitates a thorough investigation of motor and drive systems, while a “Program Paused” alarm might simply require operator intervention to resume execution. A failure to discern this crucial distinction can lead to wasted resources and unnecessary downtime.

Question 3: Is it possible to troubleshoot effectively without a thorough understanding of robot programming?

While deep programming knowledge is beneficial, effective troubleshooting does not always require expertise in robot code. Many alarms stem from hardware failures, sensor malfunctions, or communication errors, issues that can be diagnosed with basic electrical and mechanical skills. The documents often provide step-by-step procedures, guiding technicians through a logical process of elimination, regardless of their programming proficiency. Overreliance on programming skills can sometimes obscure simpler, more readily addressable causes.

Question 4: What role does the guide play in preventing recurring alarm events?

The resource is not simply a reactive tool for addressing immediate crises; it’s a proactive instrument for preventing future incidents. Detailed alarm descriptions often reveal underlying causes, such as excessive wear, inadequate lubrication, or environmental contamination. By addressing these root causes, technicians can implement preventative maintenance measures, reducing the likelihood of recurring alarms and extending the lifespan of the robotic system. Ignoring these subtle clues transforms the guide into a mere band-aid, masking systemic problems that will inevitably resurface.

Question 5: How can the information be effectively integrated into a broader maintenance management system?

The data contained within is most effective when integrated into a comprehensive maintenance management system. This involves tracking alarm occurrences, documenting troubleshooting procedures, and analyzing recurring patterns. By correlating alarm data with maintenance schedules and operational parameters, organizations can identify potential weaknesses in their automated processes and optimize their preventative maintenance strategies. Disconnecting alarm management from the broader maintenance context diminishes its value, reducing it to an isolated, reactive response.

Question 6: Are there limitations to relying solely on these documents for complex robotic malfunctions?

While comprehensive, the information cannot address every conceivable scenario. Complex or intermittent malfunctions often require specialized diagnostic tools, advanced programming skills, and the expertise of experienced robotics engineers. The referenced documentation serves as a valuable starting point, but should not be considered a substitute for expert assistance when faced with particularly challenging problems. Overconfidence in the manual’s capabilities can delay crucial intervention, potentially exacerbating the problem.

Effective utilization requires a blend of technical proficiency, critical thinking, and a commitment to continuous learning. It serves as a powerful tool, but its true potential is realized when combined with a broader understanding of robotic systems and a willingness to seek expert assistance when necessary.

The next section will explore real-world case studies, illustrating the practical application of the manual in resolving common FANUC robot malfunctions.

Navigating the Labyrinth

The factory floor, a crucible of metal and motion, offered no quarter for ambiguity. A stalled robotic arm was not merely a mechanical inconvenience; it was a financial bleed, each idle moment a stark reminder of lost productivity. The key to unlocking its potential, to silencing its accusatory alarms, lay not in brute force or blind guesswork, but in the methodical application of the knowledge contained within the designated document. It demands a strategic approach, an understanding that it is a map to navigate a complex system.

Tip 1: Master the Art of Version Control: Before even opening the document, ascertain its compatibility with the robot’s software version. A mismatch between the guide and the system can lead to misdiagnoses, wasted effort, and prolonged downtime. Document control ensures alignment between instruction and mechanism.

Tip 2: Treat Alarm Codes as Clues, Not Conclusions: Each alarm code is a pointer, directing investigation toward a potential source of the problem. Do not assume it’s the definitive answer. A “Servo Error” alarm, for example, could stem from a faulty motor, a damaged cable, or a software glitch. Follow the troubleshooting steps outlined in the manual to systematically eliminate possibilities. Treating an alarm code as a final diagnosis is a path to wasted effort.

Tip 3: Embrace the Schematics: The “fanuc alarm manual pdf” often contains detailed wiring diagrams and component layouts. These are invaluable tools for tracing signals, testing connections, and identifying faulty hardware. Familiarize yourself with these schematics, as they can provide a visual representation of the robot’s inner workings, often revealing insights that are not immediately apparent from the text. The map of these elements must be consulted to understand the entire process.

Tip 4: Prioritize Safety Protocols: Many alarms indicate potentially hazardous conditions, such as exposed high voltage or the risk of unexpected robot movement. The guide emphasizes the importance of following safety protocols before attempting any repairs. Ignoring these warnings can have devastating consequences. Safety steps are not mere suggestions, but integral components of diagnosis.

Tip 5: Document Everything: Maintaining a detailed log of alarm occurrences, troubleshooting steps, and repair actions can prove invaluable for preventing future problems. This historical record can reveal recurring patterns, identify systemic weaknesses, and facilitate more efficient troubleshooting in the future. These notes provide a unique historical perspective that is not available from any other avenue.

Tip 6: Calibrate with Fanuc Support: When faced with persistent or complex issues, don’t hesitate to consult FANUC’s technical support team. They possess a wealth of expertise and can often provide insights or solutions that are not readily apparent from the manual. Expert consultation turns technical documentation into technical solutions.

Tip 7: Adopt Preventative Measures: Use the document not only for immediate crisis management but to devise preventative procedures to address future problems. The document describes the path to a stable system.

By embracing these tips, any skilled person can transform the ominous blinking of an error alert into a manageable solution.

This information serves as a foundation, but deeper analysis will be beneficial. It will prove valuable to analyze some case studies for reference.

The Enduring Legacy of the Alarm Key

The preceding exploration has illuminated the multifaceted significance of the fanuc alarm manual pdf. Its not merely a dry repository of error codes, but a critical instrument that bridges the gap between technological complexity and practical resolution. From identifying obscure malfunctions to ensuring the safety of personnel, this seemingly simple document serves as a cornerstone of reliable automation. The effective utilization of the guides translates directly into minimized downtime, optimized productivity, and a heightened awareness of potential risks. Its impact extends beyond the immediate troubleshooting of technical glitches, fostering a culture of preventative maintenance and informed decision-making within the manufacturing environment.

As the landscape of industrial automation continues to evolve, the imperative for readily accessible, comprehensive documentation will only intensify. The reliance on human expertise, augmented by digital tools like this, will remain paramount in navigating the increasingly intricate systems that drive modern manufacturing. Remember its principles, and the hum of the machines will prove it was worthy.