47
11 Block Diagram
11.1. Power Supply Block Diagram
H
H
H
H
TIMER +5V
UNREG +38V
8
IC7503-
D7506
TO
U/V
TUNER
A
B
C
D
F
E
X SW+3.3V
X SW+3.8V
IC7501- 16
(X SW+3.3V OUT)
Q1502
DI P ON
IC7501- 44
SECTION
TIMER
FROM
14,15
P1501
P1102
X SW+3.8V
1,2,3
P1501
P1102
X SW+5.8V
9,10,11,12
P1501
P1102
X SW+12V
TRANSFORMER
POWER SWITCHING
DISPLAY HEATER
T7501
7
1
IP1501
2
1
IP7501
2
1
PS+11.6V
8
8
46
IC3001- , IC4009-
PWR SAVE :ON
IC7501- 79
SECTION
TIMER
FROM
( :ON)
QR7401
(REG.PS+11.6V)
IC7401
VOUT
VIN
3
5
:ON
2
1
GND
H
H
DR+12V
DR P ON
IC7501- 42
SECTION
TIMER
FROM
( :ON)
QR1501
FET
D
S
G
Q1509
(DR+12V OUT)
1
2
3
5
6
7
8
4
AC INLET
P1101
SURGE
SUPPRESSOR
AND
SURGE
ABSORBER
F1101
VA1110,L1120,L1121
D1140,C1143
RECTIFIER
T1150
POWER
SWITCHING
TRANSFORMER
6
P1
2
1
3
4
9
5
IC1150
(SWITCHING IC)
VCC
GND
Z/C
F/B
4
2
1
P2
B1
B2
7
VIN
G
G
NS12
NS12
8
11
1
3
2
D1270
1
2
7
6
Vin
V5
FET
Gate
Drive
GND
IC1601
(DC/DC CONVERTER)
FET
D
S
G
2
4
5
6
7
1
3
8
Q1600
(REG.X SW+5.8V)
4
3
2
1
Q1200
(FEEDBACK)
1
2
3
IC1200
(ERROR VOLTAGE DET.)
COLD
HOT
POWER P.C.B.
MAIN P.C.B.
DMR-EH59GA/GC/GN
Power Supply Block Diagram (1/2)
8
Current
Sense
12
7
, IC4012-
Summary of Contents for DMR-EH59GC
Page 5: ...5 1 2 Caution for AC Cord For EH59GC only ...
Page 14: ...14 ...
Page 18: ...18 NOTE Use the replacement parts RMV0335 when the Sheet has not being stickability ...
Page 35: ...35 9 2 P C B Positions ...
Page 42: ...42 10 1 2 Checking and Repairing of RAM Digital P C B Module ...
Page 43: ...43 10 1 3 Checking and Repairing of Main P C B ...
Page 44: ...44 10 1 4 Checking and Repairing of HDD ...
Page 90: ...90 14 1 6 Waveform Chart ...