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Toubleshooting

The document outlines 5 steps for troubleshooting problems: 1. Verify that there is actually a problem and it is not a simple fix like ensuring power is switched on. 2. Analyze what should be happening versus what is happening to identify potential causes. Suspect the simplest problems first. 3. Isolate the issue by checking components one at a time for damage or replacing them to test. 4. Repair or replace the faulty part. 5. Perform an operational check to ensure the problem is fixed after reassembly. Following these steps can make troubleshooting easier.

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Confused? What do you do first? Follow troubleshooting steps to do the job right!
Troubleshooting Steps 1. Verify 2. Analyze 3. Isolate 4. Repair 5. Ops check
Step 1: VERIFY IS THERE ACTUALLY A PROBLEM ?
The problem might be simpler or more complicated than it looks. Hey, it won’t work! and trying harder just makes it worse!
A simple fix? Is the power switch turned off?
Is it just unplugged?
Is it disconnected at the power source? Is the circuit breaker off? See the tripped one?
Step 1: VERIFY • Is there really a problem? • Is the power switch turned off? • Is it just unplugged? • Has it been disconnected? • Is it getting power? • Do you know how it is supposed to work?
Step 2: ANALYZE • THINK !THINK ! • What should be happening that isn’t or what is happening that shouldn’t? • What could be the cause of the problem? • Which part is most likely the cause of the trouble? • Are there other things that might have an effect? • Is it mechanical or electrical or electronic?
Step 2: ANALYZE • What is the most logical cause of the problem? • Suspect the simplest thing first. • Work toward more complicated things.
Step 2: ANALYZE • Do you know the circuit? • How many things can go wrong? • Identify components most likely to fail.
Step 3: ISOLATE • Look for damage (broken wires, cracked foil traces, burned components, cold solder joints). • Check each part, starting with the simplest. • Check one thing at a time • Check components with a good meter. • Trace continuity with an Ohm meter. • Remember one handed meter readings if circuits are powered.
Step 4: Repair Repair or Replace? Is it more cost effective to replace a part or machine or to repair?
Step 5 Ops Check • Does it work? • Double check to make sure it is operational again. • Reassemble it all back together again after you ops check. • Ops check again after reassembly! • Your job isn’t done unless you make sure it works!
Review 1. VERIFY – is it broken? 2. ANALYZE – how does it work? 3. ISOLATE – which part is broken? 4. REPAIR – fix or replace 5. OPS CHECK – test drive it Follow the steps for success.
Recite the Five steps !
• Makes troubleshooting easier • Set up a bench with all working parts. • Swap out working parts with parts that need troubleshooting and repair. • Swap out and test one part at a time. The Test Bench
stereo tuner TV speakers VCR computer printer monitor scanner camera DVD bad ?
When you receive a part that is not working • Label it with: – who owns it or brought it in – the date it was brought in or reported – the reported or suspected problem – who is responsible to troubleshoot and repair it • Put it in the test bench queue.