Sylvania 6842THG, Руководство по обслуживанию

Страница: 45 / 123

1-9-6 L0700BLSP
Sub Power Supply Block Diagram
8A 250V
4A 250V
F601 8A/250V
F2000 4A/250V
LINE FIL
TER
L601-L603
CL4601
JK4601
CN603
CN2000
CL4602
FRAME GND
A
C4601
A
C
CORD
HOT CIRCUIT. BE CAREFUL.
HOT CIRCUIT. BE CAREFUL.
BRIDGE RECTIFIER
D2005 - D2008
BRIDGE RECTIFIER
D2000 - D2003
COLD
T2000 IC2000 (FEEDBA
CK)
IC2001 (ISOLA
T
OR)
HO
T
HO
T
ANALOG CB
A
ANALOG CB
A
SUB PO
WER SUPPL
Y CB
A
4 3
1 2
B
A
C120V
2
W
A
C120V
1
CN2002
A
C120V
2
A
C120V
1
CN2005
A
UDIO+21V
7,8
P-ON-H
3
7,8
3
CN2004
CN705 CN704
P-ON-H A
UDIO+21V
+12V T+5V
CN111
VT+33V
9
T+5V
12,13
9
12,13
D+3.3V
5,6
D+2.5V
1,2
+12V
20
VT+33V
1
+5V
4
+3.3V
10
+2.5V
12,13
+1.8V
19
+1.2V
16-18
+3.3V STBY
2
5,6 1,2
CN708 VSB+5V A
C-DET
3 5
PS-SOS PS-ON
4 1
6 4 2 1
9 8 7
11 10 12
Q2001
SWITCHING
Q2003
Q2002
SWITCH
CTL.
4 3
1 2
T
O
MAIN PO
WER
SUPPL
Y
BLOCK DIA
GRAM
(CN2100)
T
O
A
UDIO
BLOCK DIA
GRAM
A
C-DET
PR
O
TECT
-2
SUB-PSU-ON
TO SYSTEM CONTR
OL
BLOCK DIA
GRAM
TO SYSTEM CONTR
OL
BLOCK DIA
GRAM
T
O
MAIN
PO
WER SUPPL
Y
BLOCK DIA
GRAM
(CN8003)
SHUNT REG.
CN2001
A
C-DET
1
A
C-DET
2
P-ON+16V
3
T
O
MAIN PO
WER
SUPPL
Y
BLOCK DIA
GRAM
(CN2101)
T
O
DIGIT
AL
CBA UNIT (CN1111)
+21V REG.
Q2050, Q2051, Q2052
+5V REG.
IC2501
IC2050
+3.3V REG.
IC537
+2.5V REG.
IC531
+1.8V REG.
IC533
+21V REG.
IC532
+12V REG.
Q503
Q2000
RL2000
+3.3V REG.
IC535
TP2050
GND
TP2053
AUDIO+21V
TP2054
T+5V
TP2051
+2.5V
WF8
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F601, F2000) 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 4A, 250V fuse.
CAUTION ! : ATTENTION :
Utiliser un fusible de rechange de m
ê
me type de 4A, 250V.
4A 250V
For continued protection against risk of fire, replace only with same type 8A, 250V fuse.
CAUTION ! : ATTENTION :
Utiliser un fusible de rechange de m
ê
me type de 8A, 250V.
8A 250V
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.