156-587 approach - Check Point Certified Troubleshooting Expert (CCTE) - R81.20 Updated: 2024

Product Details

For Trainers and Service Managers

This Package Features:

Two Trainer Textbook Resources That Include A Technician Textbook and Power Point Presentation

“HVACR Troubleshooting Fundamentals: Electricity & Wiring Diagrams”

“HVACR Troubleshooting Fundamentals: Refrigeration & Air Flow Systems”

Two Video Training Programs That Include A Disc Containing Quiz Questions and Resource Materials

“Electrical Fundamentals For HVACR Technicians” …Run Time 120 Minutes

“Refrigeration Fundamentals For HVACR Technicians” …Run Time 90 Minutes

Two Copies Each Of Two Technician Textbooks

“HVACR Troubleshooting Fundamentals: Electricity & Wiring Diagrams” … 420 Pages

“HVACR Troubleshooting Fundamentals: Refrigeration & Air Flow Systems” …310 Pages

Additional Free Bonus Video Program That Includes A Resource Material Disc

“Proper Use Of Test Instruments” DVD With Training Resource Guide …Run Time: 60 Minutes   A $40 Value

When these resources are implemented into your staff development program, technicians-in-training use their textbook for study and accomplishing end-of-chapter exercises.

At your regularly scheduled training sessions, the Instructor Guide and/or Power Point gives you the opportunity to assess technician progress, and the DVDs allow you to present video segments to supplement the training process.

Regular Retail If Purchased Individually:

1. Electrical Fundamentals For HVACR Technicians DVD……………$80.00

1. Refrigeration Fundamentals For HVACR Technicians DVD……….$80.00

1. HVACR Troubleshooting Fundamentals: Electricity & Wiring Diagrams: Instructor Package……………………………………………………..$125.00

1. HVACR Troubleshooting Fundamentals: Refrigeration & Air Flow Instructor Package……………………………………………………...$120.00
2. HVACR Troubleshooting Fundamentals: Electricity & Wiring Diagrams: Student Text: $75.00 Ea………………………………………………..$150.00

2. HVACR Troubleshooting Fundamentals: Refrigeration & Air Flow Systems: Student Text: $70.00 EA……………………………………$140.00

Total Price If Purchased Individually………………………………………….$695.00

Your Package Price…………………………………………………………….$610.00

With the proliferation of smart home devices, cloud gaming, and video-streaming services, maintaining a strong internet connection is more important than ever. If you're experiencing lag while playing League of Legends, or it takes forever to get music, there's a good chance the problem is on your end and not an issue with your internet service provider. Before you schedule a service call with your cable company, check out our tips for troubleshooting your internet connection.

1. Try Another Device or Website

(Credit: Google)

Start with the obvious: Is the problem only happening on one device or all your devices? If your computer's having problems, see if your tablet or someone else's laptop can connect to the internet. If the problem only happens on one device, you can safely narrow the problem down to that particular machine.

If a specific website won't load, try another site. If you can visit other websites just fine, it's likely that the problem is with the website you're trying to visit, and you'll have to wait for them to fix things on their end. Try typing the website's address into downforeveryoneorjustme.com or downdetector.com to see if there's a known service outage.

If there is no known outage, it could be an issue with your browser's cache. You may want to try visiting the site in a private browsing window or from a different browser to see if that fixes the connection problem. And clear your browser's cache and cookies.

2. Check the Wi-Fi Settings

(Credit: PCMag / Apple)

Check the Wi-Fi settings on your device and make sure you are connected to the proper SSID. If not, you may be accidentally connected to the wrong network by default. Windows users and those with macOS Monterey or older can change the connection priority to ensure you can connect to the correct network. Alternatively, you can deselect the auto-connect option next to any unwanted network names.

(Credit: Whitson Gordon / Microsoft)

If you're connected to the right network and still have problems, Windows can help you diagnose the issue. Right-click on the network icon in your system tray and select Troubleshoot problems (Windows 10) or Diagnose network problem (Windows 11) to run the Windows Network Diagnostic routine. This can sometimes correct common issues by resetting the adapter.

You can also check your network adapter settings under Network and Sharing Center in the Control Panel to make sure the adapter is using the correct gateway address and other settings.

3. Check Your Internet Package

(Credit: PCMag / Ookla)

If your internet is working, but it's slower than expected, it may be time to doublecheck with your ISP on what speeds you should be getting. Head to a site like Speedtest.net and run a speed test. You'll get a number in megabits per second denoting the speed your computer is actually experiencing. From there, open to your ISP's website and check your bill.

(Credit: Whitson Gordon)

If the number on your bill is the same as your speed test, then you're getting the correct speeds you pay for. If that feels too slow, you'll need to upgrade to something faster. If your speed test is significantly slower than the speed you pay for, then you are indeed having problems, and should continue with troubleshooting.

4. Scan for Viruses

(Credit: AVG Technologies)

Sometimes your internet connection can be affected by malicious code on your computer. Spyware, viruses, and malware can each have a significant impact on your web-surfing speed and overall system performance. If nothing else is making sense, do a virus scan to be sure.

Windows comes with Windows Defender built in, which can do the job nicely, though there are plenty of free and paid utilities available as well. And yes, even if you have a Mac, you should still invest in good antivirus software—despite what you might have heard, they are not immune to infection.

5. Bypass Your DNS Server

(Credit: Whitson Gordon / Microsoft)

When you type a website into your browser, your computer looks up the IP address of that website using a Domain Name System server. Occasionally, these servers can have problems, making it difficult to visit websites using their friendly domain names (like PCMag.com). It's like having a working phone with no contact list—you technically have the ability to call people, but you don't know anyone's number.

You can try to fix the issue by flushing your DNS cache. Sometimes these things get stuck, and hitting reset can help. Otherwise, you can change the DNS server outright, either on an individual device or at the router level so it affects everything on the network.

6. Decode the Blinking Lights

If you can't connect to the internet at all, take a look at your modem and/or router and their LED status indicators. If some of the lights are on, but some aren't—or they're flashing repeatedly—you'll want to look more closely at what they're telling you. Check the documentation for your modem and/or router to diagnose what these lights.

For example, if your router's network light is on but the Wi-Fi lights aren't, you may need to press the Wi-Fi button on the side, or re-enable Wi-Fi from its configuration menu. Your modem's lights may be flashing rather than solid, which could mean is it unable to find an internet connection, necessitating a new modem (or a call to your ISP).

If none of them are lit up, then the modem or router is likely off. Check to make sure that nothing has been accidentally unplugged and that the power switch (if there is one) is turned on. Otherwise, disconnect the power cords and wait a minute or two. If your modem and router are separate, plug in the modem first. If the lights turn on, you can then plug in your router. If you still don't see lights after plugging them in, you may have a failed power adapter, a faulty power strip, or a fried router.

7. Check Your Bandwidth

(Credit: PCMag / Microsoft)

It's possible that everything is working properly, but a program on your computer is using up all your bandwidth. On Windows, open up the Task Manager by pressing Ctrl + Shift + Esc and click on the Network column to sort by network usage. On a Mac, press Command + Space to open Spotlight, type "Activity Monitor," and head to Activity Monitor's Network tab.

If a certain app is using a lot of bandwidth—like if you're downloading a big file—you may just need to wait until that process is finished, or cancel it to get your internet snappy again. If you don't see any obvious culprits, see if someone else in the house is downloading a large file on their machine, and tell them to knock it off.

If someone is using a game streaming service, don't let them hog all the bandwidth on the network. There's also always the chance that a neighbor is stealing your Wi-Fi. We have instructions on how to see who is on your network and kick them off.

8. Get a Better Signal

Google Nest Wi-Fi (Credit: Zlata Ivleva)

If you're using Wi-Fi, there are plenty of problems that can slow down your connection. Try connecting your computer directly to the router with an Ethernet cable. If that solves the problem, then your Wi-Fi signal is poor enough to degrade your internet speed.

Check the Wi-Fi icon on your computer: How many bars do you have? If you're low on bars, you may need to move your router to a more central location in your house, or buy a Wi-Fi extender. (If you already have a Wi-Fi extender, it may just be poor quality—a mesh system will probably do a better job).

If you have full bars but there are a lot of Wi-Fi networks in your building, it may just be too congested, and changing the channel or using the 5GHz band may help solve the problem. Check out our guide to boosting your Wi-Fi signal for more tricks to improving reception.

9. Update Your Firmware

(Credit: Whitson Gordon / Trendnet)

Firmware is the low-level embedded software that runs your modem, router, and other network hardware. Most vendors provide downloadable firmware updates that can resolve performance issues, add new features, and increase speed. If there's a known issue with your router, it's possible an update will iron things out.

Look for the firmware update tool in the System section of your router's settings and follow the instructions carefully to ensure that you're installing the correct firmware version. Do not get firmware from a third-party site.

10. Wipe Your Settings Clean

(Credit: Whitson Gordon / Asus)

If you have previously changed any router settings, and now there's a problem, try resetting your router to its factory default configuration. For most routers, this involves pressing a very small reset button on the rear panel and holding it down for several seconds until the LED lights begin flashing, but there may also be a reset option in the settings menu.

Once reset, you can log into the web interface and set it up from scratch as if you're hooking it up for the first time. Just be careful not to enable the same setting that caused the problem in the first place.

11. Upgrade to a Faster Router

(Credit: Acer)

If you're using an older 802.11b or 802.11g router, you may want to consider upgrading to a newer, more powerful one, especially if you have multiple computers, smartphones, and other devices vying for bandwidth.

A dual-band router gives you two radio bands to choose from and allows you to dedicate a band to clients that require lots of bandwidth, like streaming video devices and gaming consoles. A tri-band will offer three bands, and can support even more activity on your network.

Moreover, newer routers employ the latest technologies to deliver speedy throughput, with enhanced Wi-Fi range. The latest router standard is 802.11ax, also known as Wi-Fi 6, and it's enhanced version Wi-Fi 6E. Check out our list of the best wireless routers when you're ready to take the plunge.

12. Head to the Source

A coaxial cable splitter (Credit: RadioShack)

If troubleshooting your modem and router doesn't help, the problem may come from further down the line. Inspect the connection coming into your home. This is usually located on the side of your house, and may or may not be housed in an enclosure. Make sure that the main cable hasn't been chewed up by squirrels or knocked loose by a storm. (If you have Starlink, we can help you repair a damaged cable).

If you see a cable splitter, make sure each connection is tight and the connectors are properly crimped. If the splitter looks suspect (i.e., rusty or dirty), try replacing it. Cheap splitters can also degrade signal strength, so if you don't need to split the signal, try getting rid of it altogether.

13. Last Resort: Dial Up Your ISP

If you've tried everything and are still experiencing internet connection woes, it's time to call your service provider. The problem could be on their end, and may require a new connection at the pole coming into your house or new equipment, such as a better modem or an amplifier.

If you're experiencing slowdowns at certain times of the day (think after work hours), it's possible that your ISP is simply unable to handle the increased user load, in which case you may want to find a new service provider. Lucky for you, we've tested them to find the best ISPs in the country.

Disclosure: Downdetector and Speedtest.net are owned by Ookla, a subsidiary of PCMag's parent company Ziff Davis.

The Device Manager Error Code 46, Windows cannot gain access to this hardware device because the operating system is in the process of shutting down, generally occurs while the Windows OS is shutting down. The error, in its true essence, relates to the malfunctioning of a hardware device, and its occurrence can disrupt the normal shutdown process. However, systematic troubleshooting can help resolve and restore the system’s stability.

What caused Device Manager Error Code 46?

The Code 46 Error generally happens when the Windows OS shuts down or starts up. The error, in its entirety, signifies that the operating system is unable to access certain hardware device/s at that specific instance, leading to the error.

• Device Driver Malfunction: Incompatible or corrupted device drivers are a prevalent cause of the error. If the driver needed for a hardware component has malfunctioned, Windows may scramble to communicate with the hardware during the shutdown process.
• Software Conflicts: A few software applications may throw up challenges to the shutdown process, preventing Windows from accessing the hardware device. Background processes that have not been terminated correctly can contribute to the error.
• Malfunctioning Hardware: Sometimes, malfunctioning hardware devices can contribute to the error. Hardware components may not respond appropriately if they are faulty or malfunctioning.

Resolving the aforesaid error requires a systematic approach to address its underlying causes. Follow these steps to fix Error Code 46, Windows cannot gain access to this hardware device because the operating system is in the process of shutting down in Device Manager in Windows 11/10:

1. Restart PC
2. Perform System Restore
3. Hardware Check for possible malfunction

1] Restart PC

A preliminary countermeasure for the Code 46 error involves restarting the system. Since restarting the computer re-initializes the hardware device contributing to the error, this step might be a significantly effective remedy.

2] Perform System Restore

Any undue changes made to the system can also be responsible for the error. Hence, restoring the system’s settings to a previous point can repeal the undesired changes.

Follow our complete guide to System Restore Windows PC to a working state.

3] Hardware Check for possible malfunction

Since the error in discussion involves possible malfunctioning of a hardware device, an effective troubleshooting approach would also involve checking the hardware devices in the system. An isolation process can be followed during such a check that involves removing a particular device like hard disk, RAM, graphics card, etc., and testing it in another system to check for its functionality.

I hope this helps.

How do I fix Device Manager Error Code in Windows?

If some of your devices are not working properly, running the Hardware and Devices Troubleshooter or reinstalling the driver may help. But if it doesn’t, you may have to find out the error code associated with your problem and manually go for specific troubleshooting. This post shows how to fix Device Manager Error Codes.

Gaurav Aggarwal is Co-Founder of Sleek and Forbes U30. An engineer-turned-entrepreneur helping small businesses survive and thrive with AI.

Have you ever wondered why so many products have prices ending in .99? There is strong evidence suggesting that consumers perceive the .99 prices to be lower than they actually are. That is an example of how psychological pricing works.

Psychological pricing is a concept where the price of a product or service is based on the consumers' psychological impact. The famous "good-better-best" price points used for the iPhone are another example of it. The effect of all these human factors is why many consider pricing to be an art. In contrast, others think of pricing as a science that's based on empirical analysis of consumer data such as the demand curve.

In either case, pricing is crucial for any business of any size. Even a marginal increase in a product's price can have huge ramifications on any business's top line. That, coupled with massive amounts of consumer data, has led to the advent of dynamic pricing, also known as surge pricing.

We all are familiar with the dreaded surge pricing prompts by Uber and Lyft, but not all of us know that dynamic pricing has been with us for a long time. Flight pricing has been based on the travel calendar since the beginning of time, but the travel industry had also adapted to applying dynamic pricing much before Uber and Lyft did.

The flight prices you see depend not just on the high-level inputs, such as yearly travel pattern, weather, events and timing, but also on the consumer itself. You may see a different price for the same flight from your desktop and your phone because you searched for the same itinerary from your desktop a couple of times last week. Airlines are using very sophisticated technologies for this price discrimination, and it's no longer just the travel giants that have been engaged in this kind of pricing. An unconventional example is Luckin Coffee, a Chinese coffee company that quotes dynamic pricing as its edge.

From a capitalistic point of view, it makes sense to optimize the profits as much as possible, although it can anger consumers. Still, profit is not the only motivator for using dynamic pricing. Surprisingly, Uber implemented surge pricing to solve demand-supply issues on its platform and not just for profit margins. Uber figured that there is a massive demand for its ride-hailing services on certain occasions, such as early morning office timings. It realized that this revenue loss and poor consumer experience were due to the lack of available drivers. Even though the drivers used to be available in the other nearby cities, it was not worth the effort to drive too far for just picking a ride.

Uber solved this problem by applying surge pricing and motivating new riders to be available in the region with the price surge. Uber had lots of consumer data and historic ride patterns to predict consumer demand and driver availability, which enabled it to implement the sophisticated algorithms required for implementing dynamic pricing.

Similarly, at Sleek, we are leveraging dynamic pricing for enabling a business to offer a great user experience where no consumer has to be physically in-line and waste their time. We charge a fee determined by dynamic pricing to allow a very small (fewer than 5%) and a limited number of consumers to "skip the line." This enables us to generate extra revenue for the business and serve the other 95% of consumers of the business by holding their spot in the line at no cost. Think of it like a small percentage of consumers are willingly subsidizing the system for everyone involved. This is an example of an ecosystem where all parties are happy with the outcome.

Dynamic pricing could be a big help for businesses, especially in this Covid-19 era. Research by the Wharton School has shown that transparency is the key to dynamic pricing. Transparency can enable customers to make informed decisions and plan accordingly. Surprisingly, many organizations start implementing dynamic pricing by running A/B tests without letting their users figure out they are being experimented upon. Also, some food-delivery services recently enabled dynamic pricing, marking up prices as high as 91% on their platforms. This kind of behavior can lead to a bad consumer experience and can build mistrust due to a lack of transparency.

In our experience, A/B tests are the right start, and they should be done—but they shouldn't blindside users. Instead, a clear marker with an "info" icon that will open an explanation for the higher prices when clicked on should do the trick. Communication is the other side of the coin along with the transparency in dynamic pricing. Most people will appreciate a business being upfront instead of being sneaky. They're looking for a reasonable system with an explanation for why things work the way they are working. For instance, economy-class passengers are fine with a separate boarding gate for first-class passengers on a plane. However, things will likely get really messy if people start randomly skipping the line. Getting a clear message to your consumers is the key. 

We should not think of dynamic pricing as just a tool for capitalistic greed to make more money but as a tool to Improve the overall product experience, similar to how Uber did it back in the day, It is possible to apply dynamic pricing for good, but we need to be upfront about what part of pricing is "dynamic" and provide enough value to the consumers to justify paying it.

Forbes Technology Council is an invitation-only community for world-class CIOs, CTOs and technology executives. Do I qualify?