Daewoo DP-42GM Service Manual page 28

2) Y_SUSTAIN PCB Structure
SUSTAIN BLOCK
Structured with HIC
RAMP_UP , RAMP_DOWN waveform generating circuit
RAMP_UP_S/W , RAMP_DOWN_S/W
Y_SCAN -62V(based on GND) Applying Circuit
Y_SHELF 70V(based on GND) Applying Circuit
Yer 166V Applying Circuit
RAMP_UP / Y_SCAN_VH / DC-DC converter circuit that generating Y_SCAN_GND s
voltage
LOGIC Circuit that processes various waveform timing signal
3) Power Supply
Vsus - Supplied from POWER MODULE.(173V)
15V - Supplied from POWER MODULE and used for FET s driving power and input powers of 3
DC-DC converter. Also, generates output voltage of each Y-RAMP_UP / Y-SCAN /
Y_SHELF(Y_SCAN_GND).
5V - Supplied from POWER MODULE through DIGITAL-board. Used for LOGIC IC power
supply. Also, power supply of 5V_Y2, 5V_Y3 is supplied through 7805 regulator from DC-
DC converter Trans TY2 s output.
Yer - Supplied by POWER MODULE. (166V)
GND - Power supply GND / Y1 / Y2 / Y3
4) Signal
Y_SUSTAIN SUS_H / SUS_L / ER_H / ER_L(supplied by P102A)
Y_ERASE (supplied by P103A)
Y_SCAN (supplied by P103A)
Y_RAMP_DOWN & S/W (supplied by P103A)
Y_RAMP_UP & S/W (supplied by P103A)
SCAN CLK / SI1 / SI2 / BLK (supplied by P103A)
SUS_H / SUS_L / ER_H / ER_L (Energy Recovery Circuit)
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