Horizontal Sustain Influence for Z and Y SUS PWBs, Y Drive Upper and Y
Drive Lower PWBs.
(Note: Defect Line shown is on the bottom, so the back X-Drive Left PWB
would be involved or the Z-SUS output from the bottom connector).
Note: The Screen can be broken down into 8 Horizontal Rows. (See the
Bottom PWB layout) from the Drive PWBs (4 from Upper Drive PWB and 4 from Lower
Drive PWB) and 2 Rows from the Z-SUS PWB (Top and Bottom). Each of the
connectors from the Control, X-Drive Left and Right PWBs controls each column.
Try to determine which area of the screen is affected to determine the PWB
involved.
SUS open (line off)
Horizontal Sustain Influence for Z and Y SUS PWBs, Y Drive Upper and Y
Drive Lower PWBs.
(Note: Defect Line shown is on the bottom, so the back X-Drive Left PWB
would be involved or the Z-SUS output from the bottom connector).
Note: The Screen can be broken down into 8 Horizontal Rows. (See the
Bottom PWB layout) from the Drive PWBs (4 from Upper Drive PWB and 4 from Lower
Drive PWB) and 2 Rows from the Z-SUS PWB (Top and Bottom). Each of the
connectors from the Control, X-Drive Left and Right PWBs controls each column.
Try to determine which area of the screen is affected to determine the PWB
involved.
X DRIVE LEFT AND RIGHT PWB INFORMATION:
Each X Drive PWB Receives LOGIC signals from CONTROL PWB and makes
ADDRESS PULSE (generates Address discharge) by ON/OFF operation, and supplies
this waveform to COF (data) "Chip On Film".
CONTROL PWB:
This picture shows the Control PWB and it’s 3 connectionsat the bottom
to the COF connectors. Creates signal processing (Contour noise, reduction
ISM,..) by an order of many FETs turning on/off for each DRIVER. Controls R, G,
B (each 8 bit outputs, then parallel split). Uses
3.3V / 5V (2 kinds of power regulators on board ).
CONTROL PWB:
This is a blow up of the Left side of the Control PWB showing the 3.3V
and 2.5V Regulators.
