Block Diagram; Power Block Diagram - Panasonic DMR-EH54DEG Service Manual

19 BLOCK DIAGRAM

19.1. POWER BLOCK DIAGRAM

VA1110,L1120,L1121 D1140,C1143
AC INLET
F1101
P1101
250V2A
SURGE RECTIFIER
SUPPRESSOR
AND
SURGE
ABSORBER
IC1150
(SWITCHING IC)
VIN 7
2 F/B 9
5
Z/C GND VCC
1 3 4
T1150
POWER
SWITCHING
TRANSFORMER
D1270
1
P1 S2D
7 18 2 X SW+12.4V
3
S2C
17
S2B
16
S2A
15
P2
5
S1A
14
S1B
13
V2
3
S1C
12
V1 S1D
2 11
QR1303
(POWER ON/OFF
CONTROL SW.)
Q1200
(FEED BACK)
4 1
3 2
2
1 3
IC1200
(ERROR VOLTAGE DET.)
HOT COLD
IC1400
(DC/DC CONVERTER)
1 VIN VOUT 8 D+1.5V
ON/OFF GND
2 5
Q1700
(REG.X SW+3.8V)
QR1301
1
(POWER ON H :ON)
S D
4 FET 2
G
IC1701 5
(DC/DC CONVERTER)
6
Current
1 Vin 8 3
Sense
FET
Gate 7
Drive
PW
2 GND 6
ON
Q1600
(REG.X SW+5.8V)
1
S D
4 FET 2
G
IC1601
5
(DC/DC CONVERTER)
IP1601 6
Current
2 1 1 Vin 8 3
Sense
FET
Gate 7
Drive
QR1800,QR1801
PW
SWITCHING 2 GND 6
ON
Q1400
(REG.DR+5V)
1
S D
4 FET 2
G
IC1401 5
(DC/DC CONVERTER)
IP1401 6
Current
2 1 1 Vin 8 3
Sense
FET
Gate 7
Drive
PW
2 GND 6
ON
QR1302
( H :ON)
Q1270
(DR+12V OUT)
1
S D
2 FET 5
G
3 6
7
8
4
47
POWER P.C.B. MAIN P.C.B.
D+1.5V P1102 P1501
12,13
POWER ON H P1102 P1501
11
X SW+3.8V P1102 P1501
14
X SW+5.8V P1102 P1501
2,3
HDD PFAIL L P1102 P1501
22
5 4
VCC VOUT
IC1501
-
+ (HDD PFAIL L OUT)
Vref
2 3
DR P ON H P1102 P1501
15
DR+12V P1103
1
TO
DR+5V P1103 HDD
4
DR+5V P1102 P1501
20,21 TO
DR+12V P1102 P1501 DVD-RAM/R DRIVE
16,17
QR1304
( H :ON)
X SW+12.4V P1102 P1501
4,5
DMR-EH54DEG
A
B
C
D
TO
HDD PFAIL L
TIMER
IC7501- 47
SECTION
FROM
DR P ON H
TIMER
IC7501- 49
SECTION
IP1501
1 2 E
DMR-EH54DEG
POWER 1/2
BLOCK DIAGRAM