28
28
DVD-2900
Power Supply Block Diagram
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) 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.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
IC1006
(SHUNT REGULATOR)
REG
AC1001 AC CORD
F1001
LINE
FILTER
L1001
D1001, D1002
D1004, D1005
Q1003
Q1001
1
3
4
3
4
IC1001
ERROR
VOLTAGE DET
T1001
6
7
8
10
9
11
12
13
SWITCHING
SWITCHING
CONTROL
1
2
5
BRIDGE
RECTIFIER
HO
T
HOT CIRCUIT. BE CAREFUL.
D1003
RECTIFIER
D1030
RECTIFIER
D1016
RECTIFIER
Q1016
TO SYSTEM
CONTROL/SERVO
BLOCK DIAGRAM
INV-POWCON
Q1005
Q1011
Q1015
Q1002
CN1001
Q1004
-FL
EV+5V
F1
P-ON+11V
EV+3.3V
P-ON+5V
5,6
EV+1.2V
7,8,9
EV+3.3V
12,13
EV+11V
11
P-ON+5V
2,3,4,10
P-ON+3.3V
21
PWRCON
+1.2V
REG.
IC1003
D1006
SCHOTTKY
BARRIER
SCHOTTKY
BARRIER
D1008
F2
A
V
CB
A
T
O
CN401
Q1008
LATCH
T1.6A L 250V
Q1014
2
Q1013
Q1021
Содержание DVD DVD-1930
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Страница 32: ...32 DVD 1930 DVD Main 2 7 Schematic Diagram...
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Страница 36: ...36 DVD 1930 DVD Main 5 7 Schematic Diagram...
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Страница 40: ...40 DVD 1930 AV 2 3 Schematic Diagram 2...
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