Panasonic DMR-EX77EG - Block Diagram; Power Supply Block Diagram

11 Block Diagram
11.1. Power Supply Block Diagram
H
H
H
H
TIMER +5V
UNREG +38V
8IC7503-
D7506
TO
U/V
TUNER
D
B
A
C
E
F
H
G
ANA+3.3V
X SW+3.3V
X SW+3.8V
X SW+3V
IC7501- 16
(X SW+3.3V OUT)
Q1502
(REG.ANA+3.3V)
IC1521
VOUTVIN 1
45
8
GND CONT
DI P ON
IC7501- 44
SECTION
TIMER
FROM
15
P1501P1102X SW+3.8V
12,13
P1501P1102X SW+3V
1,2,3
P1501P1102X SW+5.8V
9,10,11
P1501P1102X SW+12V
TRANSFORMER
POWER SWITCHING
DISPLAY HEATER
T7501
71
IP1501
21
IP7501
21
PS+11.6V 8846IC3001- ,IC4009- ,IC4012-
PWR SAVE :ON
IC7501- 79
SECTION
TIMER
FROM
( :ON)
QR7401
(REG.PS+11.6V)
IC7401
VOUTVIN 3
5
:ON
2
1
GND
H
H
DR+12V
DR P ON
IC7501- 42
SECTION
TIMER
FROM
( :ON)
QR1501
FET
DS
G
Q1509
(DR+12V OUT)
1
2
3
5
6
7
8
4
9
PS90001P7413PS11R6V
TO BACK END P.C.B.
AC INLET
P1101
SURGE
SUPPRESSOR
AND
SURGE
ABSORBER
F1101
VA1110,L1120,L1121 D1140,C1143
RECTIFIER
T1150
POWER
SWITCHING
TRANSFORMER
12
P1
2
134
9
5
IC1150
(SWITCHING IC)
VCCGNDZ/C
F/B 10
8
7
P2
V2
V1
7VIN
S1B
S1A
S1C
S2
S3B
S3A
2
3
4
5
1
3
2
D1270
D1400
SWITCHING
QR1800,QR1801
1
2
7
6
Vin
PW
ON
FET
Gate
Drive
GND
IC1601
(DC/DC CONVERTER)
FET
DS
G
2
4
5
6
7
1
3
8
Q1600
(REG.X SW+5.8V)
4
32
1
Q1200
(FEED BACK)
1
2
3
IC1200
(ERROR VOLTAGE DET.)
COLDHOT
POWER P.C.B. MAIN P.C.B.
DMR-EX77EG/EC/EC1/EB,
EX87EG/EC/EC1/EB
Power Supply Block Diagram (1/2)
8
Current
Sense
6
1
DMR-EX77EG / DMR-EX77EC / DMR-EX77EC1 / DMR-EX77EB / DMR-EX87EG / DMR-EX87EC / DMR-EX87EC1 / DMR-EX87EB
45