Master Electronics Repair !

Welcome to Master Electronics Repair! website.Here you will find:Service Modes, Circuit Diagrams,Service manuals, Firmware Update procedure, Disassemble procedure, Universal remote control setup codes, Troubleshooting, Diagnosing, Measuring, and more.... of many of LCD/LED TV/Displays,others various electronic apparates,trough many technical notes and tips/tricks to help repairing/fixing Troubles/ faults,for electrical technicians.This site helps you to save the Earth from electronic waste!

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!

Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday, 8 February 2019

SHARP AX-1100 - MICROWAVE OVEN TEST MODE - ERROR CODES

Sharp MICROWAVE OVEN AX-1100 - Test Mode - Error Codes

Sharp AX-1100(R)M - AX-1100(SL)M - MICROWAVE OVEN WITH STEAM AND GRILL

Microwave ovens contain circuitry capable of producing very high voltage and current, contact with any part of the high voltage circuit will result in electrocution. High voltage capacitor, Power transformer, Magnetron, High voltage rectifier assembly, High voltage fuse, High voltage harness.

Sharp recommend that wherever possible fault-finding is carried out with the supply disconnected. It may, in some cases, be necessary to connect the supply after the outer case has been removed, in this event carry out 3D checks and then disconnect the leads to the primary of the power transformer. Ensure that these leads remain isolated from other components and the oven chassis. (Use insulation tape if necessary.) When the testing is completed, carry out 3D checks and reconnect the leads to the primary of the power transformer.

TO CHECK 3D

1) Disconnect the supply.
2) Door opened, and wedged open.
3) Discharge the high voltage capacitor.

[The high-voltage capacitor remains charged about 60 seconds after the oven has been switched off. Wait for 60 seconds and then short-circuit the connection of the highvoltage capacitor (that is, of the connecting lead of the high-voltage rectifier) against the chassis with the use of an insulated screwdriver.]

TO CHECK 4R

1) Reconnect all leads removed from components during testing.
2) Replace the outer case (cabinet).
3) Reconnect the supply.
4) Run the oven. Check all functions.

Microwave ovens should not be run empty. To test for the presence of microwave energy within a cavity, place a cup of cold water on the oven turntable, close the door and set the power level to HIGH (100%). And set the microwave timer for two (2) minutes. When the two minutes has elapsed (timer at zero) carefully check that the water is now hot. If the water remains cold, carry out 3D checks and re-examine the connections to the component being tested.

Some normal boards are found in board units that have been returned due to oven failure. So, most of board replacements may arise from poor harness connection. Accordingly, before replacing any board that was judged to require its replacement, use the following procedure to re-check that the connection terminal of a connector has been properly inserted:

When the connectors have been incorrectly inserted to the control unit.

CN-A > The oven can not be powered on. (Fan motor, oven lamp, damper motor and /or pump motor do not operate.)

CN-B > No heating can be done. Thermistor error EE01 or EE12 appears.

RY1 > Antenna motor, high voltage transformer, oven lamp, engine heating element, and grill heating element do not operate.

RY2 > Engine heating element does not operate.

RY3 > Grill heating element does not operate.

RY4 > Antenna motor and high voltage transformer do not operate.

2. When latch switch adjustment is incorrect
When latch switch adjustment is incorrect, symptoms such as no heating, no heating start, no activation even with start button pressed, etc. will occur.
3. Final error code is memorized in ROM (control unit). (Refer to Error list EE code on page 10-1.)
4. When the intake damper motor is locked or wire leads to it are not connected, cooking mode is stopped minute after starting cooking.
5. minutes after stopping cooking, energy save mode will work and no segment is displayed.

How to operate the test mode

Error List

Operate test mode
(Power on and door closed) ® STOP ® STEAM HIGH ® MICRO ® Door open ® Select Test No. 2by [WEIGHT UP/ DOWN] ® START ® Select Address 04h (or 05h) ® START
EE code: EE code is memorized in the FLASH address 04h as error history. (Only antenna error code is memorized in the FLASH address 05h.)
NOTE: When an error mode occurs except for shortage of water error and the oven stopping state continues for more than 3 minutes, the oven will be powered off by Energy save mode function.