Wednesday, November 04, 2015

SAMSUNG PPM63H3X/XSF PLASMA SERVICE MODE AND DETAILED POWER SUPPLY CIRCUIT

SAMSUNG PPM63H3X/XSF 

PLASMA DISPLAY 


SERVICE MODE AND POWER SUPPLY CIRCUIT

SERVICE MODE
HOW TO ENTER TO SERVICE MODE 
1. Turn the power off and set to stand-by mode.

2. Press the buttons of the transmitter in this order; Info-Menu-Mute-Power or Mute-1-8-Power to turn the set on.

3. The set turns on and enters service mode.
UP/DOWN Key > Cursor move to select items
LEFT/RIGHT Key > Enable to increase and decrease the data of the selected items
White Balance Adjustment
1. W/B Adjustment is required for the following four modes: DVI > DTV > PC > CVBS(VIDEO) > CVBS(VIDEO PIP)

2. Adjustment Method (DVI, DTV, PC : VG828, CVBS : Adjust RF signals to match the Toshiba pattern (in-house signal)

A. Adjust the target set by adjusting the panel logic and the video DNIe adjustment register in register in order to determine the referential W/B of the panel with a DVI input, which is the full digital path.

B. For DTV adjustment, adjust the adjustment register of ad9888 to align the DTV signal to the DNIe and logic panel value which was fixed with a DVI adjustment so that they are in effect considered to be the same signals. (At this time, do not adjust the gain of AD988> the Highlight W/B does not need to be adjusted since its deviation falls within valid distribution range.)

C. PC adjustment is same as DTV adjustment. (The offset can be applied to the values obtained through DTV adjustment. However, additional adjustment is required for Y, Cb, and Cr of DTV since PC processes R, G, and B signals.)

D. cvbs adjustment is performed with the Toshiba pattern (in-house signal) and differs from the VG828 signals in the above three modes. Hence, it should be performed with the same method of  DVI adjustment.

E. Finally, activate PIP in video mode, and repeat W/B adjustment.
Thus, Micom saves the W/B data separately for each memory mode of the block
DETAILED POWER SUPPLY CIRCUIT
CLICK ON THE IMAGES TO ZOOM IN