REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

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!

©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 !

Tuesday 19 March 2019

PHILIPS MCM277/05/12/98 - MICROSYSTEM - MAIN BOARD - MCU BOARD - SCHEMATIC DIAGRAM - COMMON FAULTS & CHECKS

PHILIPS MCM277/05/12/98 - MICROSYSTEM - MAIN BOARD - MCU BOARD - SCHEMATIC DIAGRAM - Common Faults & Checks


MAIN BOARD SCHEMATIC - TYPE -1
Click on schematics to Magnify
MAIN BOARD SCHEMATIC - TYPE - 2
CD & MCU BOARD SCHEMATIC
MCU PORTION

COMMON FAULTS
PROBLEM
SOLUTION
“NO DISC” is displayed
Insert a disc. Wait until the moisture condensation at the lens has cleared.
Replace or clean the disc, see “Maintenance”.
Use a finalised CD-RW or a correct MP3/WMA -CD format disc
Some files on the USB device are not
displayed
Check if the number of folders exceeds 99 or
the number of titles exceeds 999
Radio reception is poor
If the signal is too weak, adjust the antenna or
connect an external antenna for better
reception.
Increase the distance between the Micro HiFi
System and your TV or VCR
The system does not react when buttons
are pressed
Remove and reconnect the AC power plug and switch on the system again
Sound cannot be heard or is of poor quality
Adjust the volume.  Disconnect the headphones.
Check that the speakers are connected correctly.
Check if the stripped speaker wire is clamped.
Make sure the MP3-CD was recorded within
32~256 kbps bit rate with sampling frequencies at 48 kHz, 44.1 kHz or 32 kHz
The left and right sound outputs are reversed
Check the speaker connections and location
The remote control does not function
properly.
elect the source (CD or TUNER, for example)
before pressing the function button (>|| , |< , >| )
Reduce the distance between the remote
control and the system. Insert the battery with its polarities (+/– signs) aligned as indicated.
Replace the battery.
Point the remote control directly toward
IR sensor on the front of the system.
he timer is not working.
Check the set is switched off.  Set the clock correctly.
Press TIMER to switch on the timer
The Clock/Timer setting is erased
Power has been interrupted or the power cord
has been disconnected. Reset the clock/timer
Posted By: FRANK at 04:38
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