Service manual
7-6
Power Supply Block Diagram
P7151BLP
4A/125V
F601
4A/125V
LINE
FILTER
L601
AC601
AC CORD
DEGAUSSING
COIL
DG691
CN691
PS691
BRIDGE
RECTIFIER
D605 - D608
HOT COLD
T601
7
5
3
2
4
3
IC601
ERROR
VOLTAGE DET
Q601
Q602
LIMITER
SWITCHING
Q652
VR661
+B ADJ
MAIN CBA
Q674
P-ON-H
HOT CIRCUIT. BE CAREFUL.
1
2
FEED
BACK
AL+30V
DEF +B
AL+9V
P-ON+5V
P-ON+3.3V
9
10
12
11
16
15
13
AUDIO +B
P-ON+5V
P-ON+5V
+5.7V-CTRL
IC903
+1.8V REG.
MCU+5.7V-CTRL
Q112
Q113
Q672
+9V REG.
RESET
+B
+BTP601
Q321
Q111
Q681
SW+8V
Q322
SW+5V
SWITCHING
RESET
Q673
SWITCHING
SW+10V SW+5V
+3.3V REG.
14
CN102
DTV-ON+3.3V44
CN1002
DTV-ON+2.5V55
DTV-ON+1.8V66
DTV-ON+3.3V
DTV-ON+1.8V
DTV-ON+2.5V
CN101
DTV-ON+5V33
CN1001
DTV-ON+5V
DTV MODULE
CBA UNIT
IC905
SHUNT
REG.
Q903
SW+2.5V
IC911
SHUNT
REG.
Q910
SW+3.3V
Q901
SW+7.5V
Q904
SW+5V
Q902
SWITCHING
DTV-ON-H
P-ON+8V
+8.7V-CTRL
Q682
SW+5V
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
TO
SYSTEM
CONTROL
BLOCK
DIAGRAM
GND
J095
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F601) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
For continued protection against risk of fire,
replace only with same type 4 A, 125V fuse.
CAUTION ! :
ATTENTION : Utiliser un fusible de rechange de même type de 4A, 125V.
4A/125V
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.