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 !

Wednesday, 20 March 2019

SONY HCD-SB500W - ADJUSTMENTS - DETAILS

SONY HCD-SB500W - ADJUSTMENTS - DETAILS


ADJUSTMENTS
RELEASING THE DISC TRAY LOCK
  • The disc tray lock function for the anti-theft of a demonstration disc in the store is equipped.
Releasing Procedure:
  • Press two buttons of EJECT and STOP simultaneously for five seconds.
  • The message “UNLOCKED” is displayed and the tray is unlocked.
  • Note: When “LOCKED” is displayed, the tray lock is not released by turning power on/off with the STBY/POWER button.
NOTE OF REPLACING THE DMB07 BOARD
When replacing the DMB07 board, since the adjustment value is not set up correctly, “Drive Auto Adjustment” can’t be performed.  In this case, initialize Memory in the following procedures.
  • Set the test mode. [See the procedure by previous post here]
  • Press the [2] key of the remote commander, and set the “DRIVE MANUAL OPERATION”.
  • Press the [6] key of the remote commander, and set the “2-6, Memory Check”.
  • Press the [CLEAR] key of the remote commander, and initialize Memory.
COLD RESET
The cold reset clears all data including preset data stored in the RAM to initial conditions.
Procedure:
  • Press three buttons of the ►►|, PAUSE and EJECT simultaneously.
  • The message “ColdRESET” is displayed on the fluorescent indicator tube, and the set is reset, then becomes standby mode.
VERSION DISPLAY
This mode is used to check the model and software version.
Procedure:
  • Press the STBY/POWER button to turn the power on.
  • Press three buttons of the [VOL▲] ,  [VOL ▼] and EJECT simultaneously for five seconds. The software version and destination is displayed.
DISPLAY LED TEST
This mode is used to check the fluorescent indicator tube and FL back light LED
  • Press three buttons of the VOL▼ , |◄◄  and EJECT simultaneously.
  • All segments of fluorescent indicator tube and FL back light LED are turned ON.
  • To release from this mode, press the EJECT button.
ROBBERY PREVENTION LOCK
This mode is used to unable to take sample disc out of set in the shop.
Procedure:
  • Press the POWER/STBY button to turn the power on.
  • Press the [FUNCTION] button to select “DVD”.
  • Press two buttons of the STOP and EJECT simultaneously for five seconds.
  • The message “LOCKED” is displayed on the fluorescent indicator tube and the disc tray is locked. (Even if pressing the A button, the message “LOCKED” is displayed on the liquid crystal display and the disc tray is locked)
  • To release from this mode, press two buttons of the STOP and the EJECT simultaneously for five seconds again.
  • The message “UNLOCKED” is displayed on the liquid crystal display and the disc tray is unlocked.
SHIP MODE
This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
  • Press the STBY/POWER button to turn the power on.
  • Press the [FUNCTION] button to select “DVD”.
  • Press three buttons the  ► ►| , |◄◄ and EJECT simultaneously.
  • The message “MECHA LOCK” is displayed on the liquid crystal display and the ship mode is set, then becomes power off.
REPEAT 5 TIMES CANCEL
The number of repeat for DVD playback is 5 times when the repeat mode is “REPEAT”. This mode enables DVD to repeat playback for limitless times.
Procedure:
  • Press the STBY/POWER button to turn the power on.
  • Press the [FUNCTION]button to select “DVD”.
  • Press three buttons of the ►►|,  [VOL +] and EJECT simultaneously.
  • Repeat 5 times limit is canceled.
AUTOSERVO ADJUSTMENT
  • After parts related to the servo circuit (RF amplifier (IC001), DSP (IC509), motor driver (IC501), EEPROM (IC903) so on) are replaced, re-adjusting the servo circuit is necessary. Select “ALL” at “1. DRIVE AUTO ADJUSTMENT”) and adjust DVD-SL (single layer), CD and DVD-DL (dual layer).
Drive Auto Adjustment
  • On the Test Mode Menu screen, press the [1] key on the remote commander, and the Adjustment Menu will be displayed.
Normally, [0] is selected to adjust DVD (single layer), CD and DVD (dual layer) in this order. But, individual items can be adjusted for the case where adjustment is suspended due to an error. In this mode, the adjustment can be made easily through the operation following the message displayed on the screen.  The disc used for adjustment must be the one specified for adjustment.
ALL
  • Press the [0] key on the remote commander, and the servo set data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD disc and 3. DVD-DL disc are adjusted in this order.
  • Each time one disc was adjusted, it is ejected. Replace it with the specified disc following the message. You can finish the adjustment by pressing the [RTURN]button on the remote commander.
Note: During adjustment of each disc, the measurement for disc type judgment is made. As automatic adjustment does not judge the disc type unlike conventional models, take care not to insert wrong type discs. Also, do not give a shock during adjustment.
DVD-SL (single layer)
  • Press the [1] key on the remote commander and insert a DVD single layer disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the EEPROM.
DVD Single Layer Disc Adjustment Steps:
1. Sled reset
2. Disc check memory SL
3. Wait 300 msec
4. Set disc type SL
5. LD on
6. Spindle start
7. Wait 1 sec
8. Focus servo on 0
9. Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 1 sec
14. Sled on
15. Check CLV on
16. Auto focus offset adjust
17. Auto focus gain adjust
18. Auto focus offset adjust
19. EQ boost adjust
20. Auto track gain adjust
21. All servo stop
22. EEP copy loop filter offset.
CD
Press the [2] key on the remote commander and insert a CD disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the EEPROM.
CD Adjustment Steps:
1. Sled rest
2. Disc check memory CD
3. Wait 500 msec
4. Set disc type CD
5. LD on
6. Spindle start
7. Wait 500 msec
8. Focus servo on 0
9. Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. (TC display start)
14. Wait 1 sec
15. Sled ON
16. Check CLV on
17. Auto focus offset adjust
18. Auto focus gain adjust
19. Auto focus offset adjust
20. EQ boost adjust
21. Auto track gain adjust
22. All servo stop.
DVD-DL (dual layer)
Press the [3] key on the remote commander and insert a DVD dual layer disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the EEPROM.
DVD Dual Layer Disc Adjustment Steps:
1. Sled reset
2. Disc check memory DL
3. Wait 500 msec
4. Set disc type DL
5. LD on
6. Spindle start
7. Wait 1 sec
Layer 1 Adjust
8. Focus servo on 0
9. Auto track offset adjust
10. CLVA on
11. Wait 500 msec
12. Tracking on
13. Wait 500 msec
14. Sled on
15. Check CLV lock
16. Auto focus adjust
17. Auto focus gain adjust
18. Auto focus offset adjust
19. EQ boost adjust
20. Auto Track Gain Adjust
Layer 0 Adjust
21. Focus jump (L1 →L0)
22. Auto track offset adjust L0
23. CLVA on
24. Wait 500 msec
25. Tracking on
26. Wait 500 msec
27. Sled on
28. Check CLV lock
29. Auto Focus Adjust
30. Auto focus gain adjust
33. Auto focus offset adjust
34. EQ boost adjust
35. Auto track gain adjust
37. All servo stop.
Drive Manual Operation
Note: This mode is used for design, and not used in service fundamentally.
On the Test Mode Menu screen, press the [2] key on the remote commander, and the Operation Menu will be displayed. For the manual operation, each servo on/off control and adjustment can be executed manually.
Posted By: FRANK at 03:32
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