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 !

Saturday, 23 February 2019

KENWOOD - KDC-8021 - KDC-M9021 - KDC-X859 - TEST MODE

KENWOOD - KDC-8021 - KDC-M9021 - KDC-X859 - TEST MODE



TEST MODE

To enter Test Mode.
  • While holding [1/5] key and the [3/7] key, reset the unit.
  • To exit from test mode, Hold down the [4/8] key, reset the unit.
  • Test Mode Reset Status

  • Special displays in tuner.
  • When the following display appear in tuner mode, it shows a problem with the fond end.
  1. "TNEP2 NG":  F/E is not aligned and EEPROM is in reset such as when skipped.
  2. "TNCON NG":  Cannot communicate with F/E (fond end).
  • K31 switching.  Each time the Preset '6' key is pressed in Tuner Mode, switches one at a time through the following sequence. [AUTO=>FORCED WIDE=>FORCED MIDDLE=>FORCED NARROW=>AUTO].
  • When reset, displays the following in AUTO.
  1. AUTO  = FMA
  2. FORCED WIDE  = FMW
  3. FORCED MIDDLE  =  FMM
  4. FORCED NARROW  = FMN
CD receiver test mode specifications.
  • No automatic ejection during reset-start.  does not make a CD check in reset with a CD is loaded. 
  • Using the Track Up key jumps to the following tracks.  NO. 9=> NO.15=>NO. 10=>NO. 12=> NO. 14=> and back to NO. 9.
  • Using the Track Down key moves 1 track downwards from the track being played.  
  • When total number of MP3 or WMA disc tracks is '9' or less, playback start from the first track.  
  • With model equipped with the MP3 or Mp3/WMP mechanism, the mechanism model name and version number are displayed at the bottom line.
Audio Items.
  • Momentarily pressing the 'Q' key calls up Audio Adjustment mode.
  • Pressing the [*] key on the remote control calls up Audio Alignment mode.
  • An initial item is set to Feder.
  • Continuous forward is disabled on the remote control.
  • Bass/Middle/Treble/NF are settable in '3' steps of [MIN/CENTER/MAX] with track Up or Dn keys.
  • Balance is settable in '3' steps of Left Max/Center/Right max, with Track Up/Dn keys.
  • Fader is settable in '3' steps of Rear Max/Center/Front Max with Track Up/Dn keys.
  • HPF is settable in '2' steps of THRU/220Hz with Track Up/dn keys.
  • LPF is settable in '2' steps of THRU/120Hz with Track Up/Dn keys.
  • Bass f/ Bass Q/ Bass EXT/Middle f / middle Q.
  • Treble f, do not appear in the audio alignment.
Menu Items
  • The DNPP/SBF keys on the remote control calls up Menu Mode.
  • Continuous forward is disabled on the remote control.
Backup Current Measurement
  • The Mute Terminal turns Off '2' seconds after being reset in ACC Off.  The panel and CD mechanisms are disabled during this time.
Channel Space Switching [K/M mode]:  While holding the [1/5] key and the [4/8] key, reset the unit.

Others
  • Automatic panel close is disabled when CD is inserted.
  • Panel operation is disabled at Power-On or Power-Off.
  • Panel open and closes with press long the 'Q' key.
  • No displays such as "CODE OFF"during Power-On.
  • Pressing the 'T1' [Auto] key during changer operation turns in 2Zone.  Cancel by pressing 'T1'[Auto] key again.
  • Pressing the [4/8] key for '1' second or more during all Off, calls up the Mask Key [security] write mode
  1. Sources are all Off.
  2. All display segments lit up.
  3. Volume at [-10db], shows 30 on display.
  4. Loud is Off.
  5. CRSC is Off.  System Q is in Flat.
  6. BEEP sounds at momentary pressing at any time
Posted By: FRANK at 05:57
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