Philips 24MC4306/37, Service Manual

Page: 38 / 131

1-10-7
Power Supply Block Diagram
T2221BLP
LINE FIL
TER
BRIDGE
RECTIFIER
T1601
IC1601 ERR
OR
V
OL
T
A
GE DET
W1601
F1601 4A/125V
L1601
D1603 D1606
DEGA
USSING
COIL
CN1601
DG601
COLD
SUB CB
A
MAIN CB
A
SWITCHING
Q1601
Q1604
Q1605
Q1606
Q1609
Q1607
Q1613
Q1614
Q1688
Q1681
Q1221
Q1602
VR1601 +B ADJ
CN1301 CN1602
CN2502
CN2503
P-DO
WN
D
VD-MAIN-PO
WER
P-ON-H
T
O CR
T/H.V
.
BLOCK DIA
GRAM
CN2502
CN1602
+33V
1 2
3 4
10 11 17 12 15 16 14 13
9 8 6 3
FEED BA
CK
1+
B
2+
B
8
+26V
M+12V TIMER+5V AL+5V P-ON+12V P-ON+8V P-ON+9V P-ON+5V(2) P-ON+5V(3)
+5.7V REG.
SW +5V
SW +5V
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM
4A 125V
P-ON+5V(4)
IC1682
+5V REG.
+5.7V
-CTRL
TO TV PROCESS BLOCK DIAGRAM
Q2610
Q2612
Q2617
IC2602
IC3603
IC3604
+1.2V
REG.
3
2
Q2615
Q2618
Q2616
Q2611
SW CTL
SW CTL
17
17
D
VD-MAIN-PO
WER
10
10
EV+4V
11
11
EV+4V
14
14
D
VD+9V
11
11
D
VD-ON+3.3V
10
10
EV+3.3V
14
14
EV+9V
13
13
EV+9V
12
12
D
VD-ON+5V
99
EV+3.3V
33
EV+1.2V
22
EV+1.2V
11
EV+1.2V
15
15
PWRCON
D
VD MAIN
CB
A UNIT
EV+9V D
VD-ON+5V
D
VD-ON+3.3V
EV+3.3V EV+1.2V PWRCON
CN1A
T
O D
VD SYSTEM
CONTR
OL / SER
V
O
BLOCK DIA
GRAM
<D
VD SECTION>
HO
T
CN1
PS1601
RL1601
Q1603
DG-ON-H
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1601) 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 m
ê
me type de 4A, 125V.
4A 125V
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
NO
TE FOR
WIRE CONNECT
ORS:
1.
PREFIX SYMBOL "CN" MEANS CONNECT
OR.
(CAN DISCONNECT AND RECONNECT
.)
2.
PREFIX SYMBOL "CL" MEANS
WIRE-SOLDER
HOLES OF
THE PCB
.
(WIRE IS SOLDERED DIRECTL
Y
.)