Samsung HPS5053X/XAA (HP-S5053) Service Manual page 122

Circuit Description
■ Drive Circuit Architecture and Function Description
- Description of the function of each board
Y-Buffer (Upper)
Y Drive B'd
- Sustain Pulse
(Energy Recovery)
- Rising Ramp Pulse
- Falling Ramp Pulse
- Vscan Pulse
Y-Buffer (Lower)
Y Pole Terminal
(6 Block)
1) X Drive Board
This is connected to the X port part of the panel. 1) Sustain voltage waveform (including ERC) is output, and 2) Ve bias in the Scan
section is maintained.
2) Y Drive Board
This is connected to the Y port part of the panel. It outputs 1) Sustain voltage wave form (including ERC), and 2) Y Rising, Falling
Ramp waveform, and maintains 3) Vscan bias.
3) Y Buffer Board
A board, which applies the Scan waveform to the Y terminal block, consists of 12 Scan Driver ICs (TI SN755870: 64 Outputs).
13-18
Logic E-Buffer
Logic F-Buffer
Logic G-Buffer
Logic B'd
X Drive B'd
- Sustain Pulse
(Energy Recovery)
- Ve Bias
X Pole Terminal
(4 Block)
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