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.

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 !

Monday 18 March 2019

SONY DVP-S530D - TROUBLSEHOOTING HINTS [DIGITAL VIDEO PLAYER]

SONY DVP-S530D - TROUBLSEHOOTING HINTS [DIGITAL VIDEO PLAYER]


TROUBLESHOOTING
  When the model DVP-S530 DVD player is first plugged in and turned on, several things occur before “NO DISC” is displayed on the front panel. One operation is performed after the next until it reaches the end of the chain. A failure will prevent it from reaching the end and often a side trip is taken to protect the unit by shutting down. Finding out where in the chain the unit has stopped will help locate the failure. Below is general description of the start-up operations followed by problems and answers. Use the information below as a troubleshooting guide to remain on track throughout your testing.
                Operations
            Details found in:


Communications between Interface IC201 and Syscon IC202 on the serial bus.
Power Control section
Front panel blue Digital Dolby indicator lights.
Power Control section
Communications with other ICs on the parallel bus.
Parallel Data Communications section
SONY DVD appears on the fluorescent display.
Power Control section
Sensors are checked and the Transport is returned to the initial state (tray is closed, sled goes to home position).
Mechanism section
Sony DVD logo appears on the monitor (OSD)
See no logo problem listed below
Search for a disc is initiated using the focus search operation and other servos
Use the Test Mode section in the service manual to test the Laser,Focus,Spindle and Trackingservos. Then see the problem servo section
NO DISC is displayed in the fluorescent display
Serial Data Communications / Power Control section

GENERAL PROBLEMS
No Power ON
  • Unplug unit and press the POWER button to discharge the power supply.
  • Watch the front panel Dolby Digital indicator while plugging the unit into AC. If there is Interface IC201 to Syscon IC202 serial communications, the blue indicator will light momentarily.
  • Press the power ON button. If the unit does not remain ON, there is a loss of communication between Syscon IC202 and a slave IC or the servo IC701 failed to reset the mechanism.  Communications occur when Syscon IC202 Chip Selects several ICs, sends data and waits for an interrupt reply from each. Use the scope to look for a low interrupt reply pulse at these ICs highlighted (in bold) while repeatedly pressing the power button to reinitiate the sequence:
  • After the brief communications above, the servo IC701 must initialize the mechanism by closing the tray and moving the sled to home position. When completed, IC701 replies to Syscon IC202. If no reply is received within approximately 2 seconds of powering ON, IC202 instructs Interface IC201 to power down (set OFF).

   Interrupt pulse From
     Through IC601
               To
ARP2 IC303/pin 86 (Wait)
In pin 108 (arpwt)
Out pin 157 (wait)

A/V Decoder IC401/pin 198(wait)
In pin 72 (avdwt)
Out pin 157 (wait)
IC202/pin 19 (Ready)
A/V Decoder IC401/pin 196 (interrupt)
Direct
IC202/pin 95 (interrupt)
Interface IC201/pin 78
(CN006/pin 2)
In pin 22 (interrupt)
Out pin 155 (Interrupt 3)
IC202/pin 88 (interrupt)
ARP2 IC303/pin 83 (Interrupt)
In pin 107 (interrupt)
Out pin 156 (Interrupt 1)
IC202/pin 94 (interrupt)
Servo IC701/pin 128 (Interrupt)
In pin 107 (interrupt)
Out pin 156 (Interrupt 1)

EEProm IC201/pin 1
(busy)
In pin 25 Out pin 155 (Interrupt 3)
IC202/pin 88 (interrupt)
DSP IC501/pin 55
(Interrupt 0)
IN pin 29 Out pin 155 (Interrupt 3)

DSP IC501/pin 56
(Interrupt 1)
IN pin 30 Out pin 155 (Interrupt 3)

NO DVD OSD LOGO
The DVD initial OSD power ON logo is stored in Flash ROM IC205. This information takes the following path to become video that outputs the AU212 board:
  • Flash ROM IC205 (storage)
  • Syscon IC202 (extraction and processing)
  • ARP2 IC303 (pass through)
  • A/V Decoder IC401 (sub-picture generation)
  • Video Buffers on the AU212 board
   In the test mode (Syscon Diagnosis/A/V Decoder test), the A/V Decoder can generate a main picture (color bar) or a sub picture CHG_COLCON”) from the flash ROM data. Unfortunately they take the same path as the logo, finally separating inside the A/V decoder IC401. Therefore if the logo, test bars or test sub picture does not appear, the problem may be the storage area in Flash ROM IC205. If none appear, the path from Flash ROM to A/V Decoder IC401 is broken.
NO DVD [CD-PB OK]
Use the test mode to perform the DVD auto adjustments using the DVD test disc.
Use the test mode to examine the OSD emergency code entries for failures. The emergency code list description is in the DVP-S330/S530/S550/S705 service manual on page 6-10E. The front panel customer code errors are preceded by a C and listed on the manual.
Use the test mode to manually play the DVD disc by activating servos 1-6 individually.
The minimum (marginal) eye pattern amplitude is 0.8Vp-p @ CN012/pin 1. Clean lens or replace laser. Follow eye pattern into ARP2 IC303/pin 17 (1.4Vp-p) which should produce less than 0.5Vdc at IC303/pin 57 if the PLL clock is able to lock to the data. Insufficient IC303/pin 17 input level will prevent a lock and so will a defective IC303.

   This DVD player uses the laser and focus servos to identify the DVD.  One may not be working. From the test mode, manually turn on the laser and focus search servos (Drive Manual Operation/Servo Control) for observation. · Laser test – using a light meter measure the laser light (never look directly at the laser) and measure voltage across R006 (laser current). 1Vdc or more across R006 means the laser is at the end of life.  The light measurement is quick but not a definitive test. The current measurement is better.
Focus search test – Scope FE (test connector CN012/pin 3) for 1.5Vpp minimum sine wave used for disc layer ID. Scope MIRROR output at CN002/pin 16 for 3Vp-p pulses during the search. The Mirror signal is an amplified the PI signal. Both come from RF Amplifier IC001.
NO DVD DL PB [OTHER DISC PB OK]
  • Perform the test mode’s “Drive Auto Adjustments” using a Single, and then a Dual layer disc, to reload data into the EEProm IC201.
  • Check the operation of the tilt circuit in the test mode by seeing if the tilt incline gear moves manually (Test mode/Drive Manual Operation/
  • Manual Adj/Tilt Position).
  • A single layer DVD Eye pattern’s minimum level is 0.8Vp-p at the MB-85 board test connector CN012/pin 1. The laser level is affected by dirt/oil in the lens and the tilt circuit. A new laser will output approximately 1.2Vp-p.
NO DISC PB
  • Use the test mode to perform the CD auto adjustments.
  • Use the test mode to examine the emergency code entry for failures.
  • Use the test mode to manually PB the CD disc by activating servos 1-6 individually to see if one is faulty.  4. The minimum (marginal) eye pattern amplitude is .8Vp-p @ CN012/pin 1. Clean lens or replace laser. Follow eye pattern into ARP2 IC303/pin 19 (1.4Vp-p) which should produce less than 0.6Vdc at IC303/pin 57 if PLL clock is locked (3V= no lock, 0V = defective IC or external short).
Posted By: FRANK at 03:13
TAG: , ,