Y-DRIVE
- 42PJ350 uses 8 Driver Y-Drive Board works as a path supplying the Sustain and Reset waveforms which are made in the Y-Sustain board and sent to the Panel through Scan Driver IC’s.
- The Y-Drive Boards receive a waveform developed on the Y-SUS board then selects the horizontal electrodes sequentially starting at the top and scanning down the panel. Receiving Logic scan signals from the Control board synchronizes scanning.
- The ICs on one Y-Drive Board commonly called “Y-Drive Buffers” but are actually Gate Arrays.
Y-DRIVE _ KEY POINTS
- There are 6 FPC (Flexible Ribbon Cables) connecting the Y-Drive board to the Panel.
- These FPC connect to a total of 768 individual electrodes determining Vertical resolution.
- If the connector P106 is removed and the unit is powered up with the lugs for Floating Gnd and Scan making contact with the Y-SUS board, the Y-SUS or Y-Drive or both boards will fail.
- Floating Ground is delivered to the Y-Drive board by 4 screw lugs.
- Scan is delivered to the Y-Drive board by 1 screw lugs.
- The Y-Drive board operates from Floating Ground, (no reference to Chassis Gnd).
- Floating Gnd 5V can be measured across C18 or C523 surface mount electrolytic capacitors.
Y-DRIVE LAYOUT
- Warning: Never run the Y-SUS with P106 disconnected. You must remove the Y-Drive board completely due to these FG lugs.
- Connector P106 does not come with a new Y-SUS or Y-Drive.
- Y-Drive signal (VSC), FG5V Volts from the Y-SUS board and Logic Signals from the Control board through the Y-SUS are supplied to the Y-Drive Board on Connector P106.
- The Floating Ground Standoffs deliver FG to the Y-Drive Board. There are 4 total.
- The VScan Standoff delivers the VScan signal to the Y-Drive Boards. There is per/board.
