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

MARANTZ - CD-7300 - SERVICE MODE - ERROR CODE DISPLAY - EMERGENCY EJECT

MARANTZ - CD-7300 - SERVICE MODE - ERROR CODE DISPLAY - Emergency Eject


SERVICE MODE
  • While pressing DISPLAY and QUICK REPLAY buttons, press POWER button.  Mode0 (Display :   Ver : P00 Version number of the micro computer is displayed).  Status: [FOCUS OFF] [SPINDLE OFF] [RADIAL OFF] [MUTE ON]
  • While pressing ►► and ◄◄ buttons, the sledge  moves toward the outer edge.  Release the button makes the sledge return to the origin.
  • Press EASY JOG or NEXT ►►| button on the remote to go to Mode 1.
Mode 1 (Display : Ver : P01). Status: [FOCUS ON] [SPINDLE OFF] [RADIAL OFF] [MUTE ON].
  • Press NEXT ►►| button to go to Mode 2.
  • Press PREV |◄◄ button to go to Mode 0.
Mode 2 (Display : Ver : P02).  Status: [FOCUS ON] [SPINDLE ON] [RADIAL OFF] [MUTE ON]
  • Press NEXT ►►| button to go to Mode 3.
  • Press PREV |◄◄ button to go to Mode 1.
Mode 3 (Display : Ver : P03).  Status: [FOCUS ON] [SPINDLE ON] [RADIAL ON] [MUTE OFF]
  • Press PREV |◄◄ button to go to Mode 1.
  • In this Service Mode, all of the following button functions work in any status.
  1. Press DISPLAY button to light up all the FL segments. Press it again then each FL segment lights up one by one.
  2. Press STOP button. Then press a button on the unit. The name of the button is displayed. Pressing a button on the remote displays the RC-5 code of the button.
  3. Press PLAY button in Mode 1, 2 or 3 then normal operation can be performed. If an error occurs the error number is displayed.
Terminating Service Mode
Turn off power to quit Service Mode.
ERROR CODES & DETAILS
DISASSEMBLY
Emergency Eject
  • To open the stucked tray, insert a pin into the eject pinhole and push the eject lever.
  • Use a pin φ 4mm or less.
This picture shows the unit upside down. The eject lever is pointed by the arrow.  The lever is thin so aim the narrow area carefully.
When removing the flat wire PS01, connecting the optical pick up and the CD decoder board, short-cut the two lands pointed by the arrow with solder. Otherwise the laser diode may be damaged by static electricity.
CD Decoder Board (PS01) Repair
When Repairing the CD decoder board PS01, you can fix the board on the loader unit as shown in the picture below with the flat wires that are provided as service parts.
Disk Tray Open/Close Speed Adjustment
  • Open/Close speed of the tray can be changed.
  • When vibration occurs upon tray open/close and some unusual behavior happens, change the tray speed to stop vibration.

Vibration on Disc Tray Open / Close
Step 1.  With pressing DISPLAY and QUICK REPLAY buttons, press POWER button.
Step 2.  Press EASY JOG button. “T-OnTime 015”(means Tray On Time 015ms default) is displayed.
Turn n EASY Jogtrot change tray open/close speed from 000 to 255ms. Turn the number smaller to make the open/close speed slower. Turn the number bigger to make the speed faster. Set bigger number to stop the tray vibration. But the open/close speed becomes faster. Press EASY JOG button again.
The display changes as shown below so you can change other parameters for the open/close speed.
Step 3.Press EASY JOG button to complete adjustment.
Step 4.Press STOP button to store the settings in memory.
To reset all the settings to default status, press number 0 button in Service Mode 0  (Display : Ver   P00).
When miss-operated, press number 0 button to retry.
{Click on pictures to Zoom In}
Posted By: FRANK at 02:01
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