Magnavox 19MDTR20 - Dvd-video Player, Service Manual

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1-10-7
Power Supply Block Diagram
T0102MCBLP
LINE FIL
TER
BRIDGE
RECTIFIER
T1601
IC1601
ERR
OR
V
O
LT
A
GE DET
W1601
F1601 4A/125V
L1601
D1603 D1606
DEGA
USSING
COIL
CN1601
DG1601
PS1601
HO
T
COLD
SUB CB
A
MAIN CB
A
SWITCHING
Q1601
Q1604
Q1605
Q1683
Q1606
Q1609
Q1607
Q1613
Q1614
Q1688
Q1681
Q1221
Q1602
VR1601 +B ADJ
Q2610,Q2611
CN1
CN2502 CN2503
CN1602 CN1301
P-DO
WN
D
VD-MAIN-PO
WER
P-ON-H
Q2612
Q2616
Q2617
Q2615
SW+5V
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(5) P-ON+5V(2) P-ON+5V(3) P-ON+5V(1)
+5.7V REG.
SW +5V
SW +5V
SW +5V
IC2602
IC3604
IC3603
+1.2V
REG.
1
2
4
SW CTL
SW CTL
TO SYSTEM CONTROL/SERVO BLOCK DIAGRAM
77
D
V
D-MAIN-PO
WER
17
17
EV+4V
18
18
EV+4V
11
AL+9V
11
EV+1.2V
22
EV+1.2V
66
EV+9V
55
D
VD-ON+5V
44
D
VD-ON+3.3V
33
EV+3.3V
99
PO
WCON
D
VD MAIN CB
A UNIT
EV+9V D
VD-ON+5V
D
VD-ON+3.3V
EV+1.2V EV+3.3V PWRCON
T
O
D
VD SYSTEM
CONTR
OL / SER
V
O
BLOCK DIA
GRAM
<D
VD SECTION>
4A 125V
Q1682
SW +5V
P-ON+5V(4)
IC1682
+5V REG.
+5.7V
-CTRL
TO TV PROCESS BLOCK DIAGRAM
CN1A
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
.)
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.