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.

How to use the site:

- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 9 March 2019

PANASONIC SA-AKX32PH SERVICE MODE SMPS POWER SUPPLY CIRCUIT AND CLASS D AMPLIFIER CIRCUIT - PANASONIC AUDIO SYSTEM

PANASONIC SA-AKX32PH

SERVICE MODE SMPS POWER SUPPLY CIRCUIT AND CLASS D AMPLIFIER CIRCUIT

Self-Diagnostic and Special Mode Setting
Cold-Start
Here is the procedure to carry out cold-start or initialize to shipping mode.
1. Unplug AC power cord
2. Press & hold [POWER] button
3. Plug AC power cord while [POWER] button being pressed
4. Release [POWER] button

Doctor Mode

1.In CD Mode:
Press [ STOP ] button on main unit follow by [4] and [7] on remote control.
2.To exit, press [OK] button on remote control or press [POWER] button on main unit or remote control.

Micro-P Version Display

In Doctor Mode: 1.Press [2] button on remote control.

Cold Start

To active cold start upon next AC power up when reset start is execute the next time.

In Doctor Mode Press [DISPLAY/-DIMMER] button on remote control.

Volume Setting Check

To check the volume setting of a main unit.

In Doctor Mode Press [7],[8],[9], [PLAY MENU/RADIO MENU] button on remote control.

FL Display Check

To check the FL segment display All segment will light up while all LED blink at 0.5s,intervals.(if any)

In Doctor mode Press [1] button on remote control.

CD Open Check

To excute CD Open operation.

In Doctor mode Press [DEL] button on remote control.

BRS1C Reliability Test (Traverse)

To determine CD Mechanism BRS1C Access Inner & Outer disc operation.
In this mode,ensure the CD is in the main unit.

In Doctor Mode:
1. Press [10] [1] [2] button on remote control.
2. To cancel, press [0] on remote control.

BRS1C Reliability Test (Combination)

To determine CD Mechanism Unit(BRS1C) Open/Close & Access Inner & Outer Disc Operation.
In this mode,ensure the CD is in the main unit.

In Doctor Mode:
1. Press [10] [1] [5] button on remote control.
2. To cancel, press [0] on remote control.

BRS1C Reliability Test (Loading)

In this mode, the tray will open & close.
To determine CD Mechanism Unit (BRS1C) Open/Close operation.

In Doctor Mode:
1. Press [10] [2] [1] button on remote control.
2. To cancel, press [0] on remote control.

Self-Diagnostic Mode

Service Mode

To enter into Service Mode
In CD Mode:
1.Press and hold [ STOP ] button on main unit for 2 secs.
2.Do not release [ STOP ] button, press
and hold [ FORWARD /NEXT ] on the remote control for 2 secs. 3.To exit, press [POWER] button on main unit.

Error Code History

Checking the records for Error Code.
If there’s no error code.Display will remain as [T]

In Service Mode:
1.Press button [1] on remote control.
2.To clear history,press & hold [0] for
5 seconds or more

Software Display Version.

To check for following:
1)System Version.
2)Jupiter Micro-processor Version.
3) Opecon Version.

In Service Mode:
1.Press button [2] on remote control.

Display of AD value of main body key

To check the AD input value

In Service Mode:
1.Press button [ 4 ] on remote control for 2 secs.

USB Error Code History
To check for USB error Codes.

In Service Mode:
1.Press button [5] on remote control.
2.To clear history,press & hold [0] for
5 seconds or more.

CD Mechanism Error Code Table

Error Code	Description Of error
CD H15	During operation POS_SW_R On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.
CD H16	During operation POS_SW_CEN On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.
F26	During switch to CD func tion, if SENSE = “L” within failsafe time of 20ms.

Entering into sales Demo Mode
Here is the procedures to enter into Sales Demonstration Lock.
Step 1: Turn on the unit.
Step 2: Select to any mode function, press and hold [ OPEN/CLOSE] key and follow by [PLAY /STOP ] key pressed within 0.5 sec.
Step 3: Hold both [ OPEN/CLOSE] and [ PLAY/STOP ] keys for 5 sec.
Step 4: The display will show upon entering into this mode.

Cancellation
Step 1: To cancel only can be triggered in CD Mode and Volume 19.
Step 2: Press and hold [ OPEN/CLOSE] key and follow by [PLAY /STOP ] key pressed within 0.5 sec.
Step 3: Hold both [ OPEN/CLOSE] and [ PLAY/STOP ] keys for 5 sec.
Step 4: The display will show after exit from this mode.

POWER SUPPLY CIRCUIT