Monday, December 17, 2012

SONY WEGA TRINITRON _ KV-34FV310 _ KV 38FV310 _ SERVICE MODE _ ADJUSTMENTS





SETTING SERVICE MODE

  • Standby mode (Power off).
  • Press the following buttons on the remote commander within a second of each other: [DISPLAY à Channel 5 à  Sound Volume + à Power]
  • Press [1] or [2] on the Remote Commander to select the item.
  • Press [3] or [6] on the Remote Commander to change the data.
  • Press MUTING then ENTER to write into memory.
  • Press [8] then ENTER on the Remote Commander to initialize.
  • Carry out Step 1 when adjusting ID’s 0-7 and when replacing and adjusting IC003.
  • Press MUTING then ENTER to write into memory.
  • DO NOT turn off set until SERVICE appears
MEMORY WRITE CONFIRMATION METHOD
  1. After adjustment, pull out the plug from the AC outlet, then replace the plug in the AC outlet again.
  2. Turn the power switch ON and set to Service Mode.
  3. Call the adjusted items again to confirm they were adjusted.
SUB CONTRAST ADJUSTMENT [RDRV]
  1. Input a color-bar signal and set the level to 75%.
  2. Set in Pro mode.
  3. Activate the Service Adjustment Mode.
  4. Set GON and BON items. Using 3 and 6 set each to the following values. Leave RON set to “1”.
  5. Select SCON with 1 and 4 .
  6. Connect an oscilloscope probe to C Board, CN705 Pin 3 Blue Out.
  7. Adjust the value of SCON with 3 and 6 for 1.90 ± 0.01Vpp.
  8. Reset GON and BON values to “1”.
  9. R ON: ON (1):  G ON: ON (1):  B ON: ON (1)
  10. Press MUTING then ENTER to save into the memory.
  11. After adjusting SCON, if still out of xpec, use RDRV resistor as a fine adjustment.


WHITE BALANCE ADJUSTMENT:  White balance should be adjusted after Sub Contrast because RDRV is also used in Sub Contrast Adjustment.
  1. Set program palette to STANDARD and push RESET.
  2. Input an entire white signal.
  3. Set to Service Adjustment Mode.
  4. Set the PICTURE and BRIGHT to minimum.
  5. Adjust with SBRT if necessary.
  6. Set RCUT to “14”.
  7. Select GCUT and BCUT with 3 and 5.
  8. Adjust by pressing 1 and 4 for the best white balance.
  9. Set the PICTURE and BRIGHT to maximum.
  10. Select GDRV and BDRV with and .
  11. Adjust with 3 and 6 for the best white balance.
  12. Write into the memory by pressing 3 then 5.

Repeat steps 1-12 for GDR4, BDR4, GCU4 and BCU4 using Video 4 input.

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