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IC1400
(DC/DC CONVERTER)
POWER P.C.B.
MAIN P.C.B.
1 VIN VOUT 8 ON/OFF GND 2 5 T1150 POWER SWITCHING TRANSFORMER
D+1.5V
D+1.5V POWER ON H X SW+3.8V
P1102 P1501 12,13 P1102 P1501 11 P1102 P1501 14
A B C
VA1110,L1120,L1121 AC INLET P1101 F1101 250V2A
D1140,C1143
QR1301 (POWER ON H :ON) D1270 SURGE SUPPRESSOR AND SURGE ABSORBER RECTIFIER 7 P1 S2D 18 3 S2C 1 2 X SW+12.4V Q1700 (REG.X SW+3.8V) 1 17 4 S2B S FET G D 2 5 6 S2A VIN 2 F/B 7 9 5 S1B X SW+12.4V Z/C 1 GND VCC 3 4 5 P2 S1A 14 PW 2 ON 1 Vin 15 Current 8 Sense FET Gate 7 Drive GND 6 3
IC1701
16 (DC/DC CONVERTER)
IC1150
(SWITCHING IC)
Q1600 (REG.X SW+5.8V) 1 2 S FET G D 5 6 7 8 X SW+5.8V P1102 2,3 P1501 D
13
3
V2 S1C 12
IC1601
(DC/DC CONVERTER) 2 V1 S1D IP1601 11 2 1 1 Vin Current 8 Sense FET Gate 7 Drive PW 2 ON GND 6
3
IC1401
(REG.DR+5V) D1401 VOUT 3 1 VIN H :ON GND 2 5
4
QR1800,QR1801 SWITCHING
DR P ON H QR1303 (POWER ON/OFF CONTROL SW.) QR1302 ( H :ON) Q1270 (DR+12V OUT) 1 2 3 S FET G D 5 6 7 Q1200 (FEED BACK) 4 1 QR1304 ( H :ON) 8 4 DR+5V DR+12V
P1102 15
P1501
DR P ON H IC7501- 49
FROM TIMER SECTION
P1102 P1501 20,21 P1102 P1501 16,17
TO DVD-RAM/R DRIVE
3
2
IP1501 X SW+12.4V 2 1 3 P1102 4,5 P1501 1 2 E
IC1200
(ERROR VOLTAGE DET.)
HOT
COLD
DMR-ES20EG/EP/EE Power Supply Block Diagram