Sharp VL-A111UL Service Manual - Page 43

43 Power control IC (8CH) CH1 ERROR AMP. CH1 output 1 IN- Comparator Drive circuit section (Voltage drop) CH2 ERROR AMP. CH2 output Drive 2 IN- Comparator circuit (Rise and section fall voltage) CH3 ERROR AMP. CH3 output Drive 3 IN- Comparator circuit (Rise and section fall voltage) 4 5 DRUM ERROR 6 CAP ERROR 7 B/L CTL 8 CH4 ERROR AMP. IN- Comparator section CH4 output Drive circuit (Rise and fall voltage) CH5 ERROR AMP. IN- Comparator section CH5 output Drive circuit (Voltage drop) CH6 ERROR AMP. IN- Comparator section CH7 ERROR AMP. IN- Comparator section IN+ CH8 ERROR AMP. IN- Comparator section IN+ Standard power CH6 output Drive circuit (Voltage drop) CH7 output Drive circuit (Rise and fall voltage) CH8 output Drive circuit (NPN) NON REG (3V~7V) 1 3.3V Power Rise and fall voltage circuit (PNP Tr) 2 2.8V Power Valtage drop circuit (PNP Tr) 3 4.9V Power Rise and fall voltage circuit (PNP Tr) 4 Mecha 5V Rise and fall voltage circuit (PNP Tr) 5 DRUM VS Valtage drop circuit (PNP Tr) 6 CAP VS Valtage drop circuit (PNP Tr) 7 B/L POW Rise and fall voltage circuit (PNP Tr) 8 Trans circuit (NPN) P-CON 3.3V 3.1V REG Circuit (P-CON3.1V) DSP 1.85V P-CON 4.9V MECHA 5V(5.7V) DRUM VS CAP VS BACK LIGHT 15V +7V -4.9V -8V -15.2V 2.65V REG Circuit I/O power SW 13.2V REG CAM15V SW D/A4.9V SW D/A3.3V SW DSP (DELTA) 2.65V 3.1V 1.85V RF 4.9V I/O YC4.9V YC-4.9V 4.9V A/D, DSP 4.9V 3.3V MOTOR DRIVER MECHA 5V 4.9V DRUM VS CAP VS LCD 4.9V 13.2V +7V -15.2V AUDIO MECHA 5V 4.9V 3.3V CAM HEAD 3.1V MECHA 5V 4.9V -8V 15V SYS 3.1V 4.9V NONREG SYSDAC P-CON4.9V D/A4.9V D/A3.3V 7-3. POWER SYSTEM BLOCK DIAGRAM VL-A111U/AH131U VL-AH151U/AH161U