FUNAI LT6-M32BB, Руководство по обслуживанию

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7-7
A8CF0BLP
Power Supply Block Diagram
HO
T
HO
T
COLD
PO
WER SUPPL
Y CB
A
INVER
TER CB
A
HOT CIRCUIT. BE CAREFUL.
Q401 SWITCHING
CONTR
OL
1
4 3
2
IC603
T400
CLN400
TO INVER
TER
BLOCK DIA
GRAM
CN1901
3
HO
T
-GND
2
AC
L
1
3 1
LINE FIL
TER
L1901
A
C1901
A
C
CORD
LINE FIL
TER
L1902
BRIDGE RECTIFIER
D1901 - D1904
5
11 14 12 17 18 13 16 15 19
9 7 8
FEED
BA
CK
Q400
SWITCHING
Q631
Q632,Q634
SWITCHING
Q646
SW
-6.8V
Q600
Q645,D648
SW+13V
Q650
IC637
+3.3V REG.
2
3
JS651
Q633
Q639,Q671
JS652
Q637
SW+5V
Q602
SW+9V
Q638,D634
SW+3.3V
P-ON-H1
T
O
SYSTEM
CONTR
OL
BLOCK DIA
GRAM
P-ON-H2 RESET
+5V REG.
PROTECT2 PROTECT1
SWITCHING
+35V P-ON+5V AL+3.3V AL+13V P-ON+9V
RESET
Q601
F1901 T4A H 250V
2
11
5 8
T1902
AC
L
HO
T
-GND
CN104A
CN3601
CN101A
CN3701
CN102A
CN4503
LCD+24.5V
8
18
AL+3.3V
3
23
P-ON+5V
1,2
24,25
LCD+3.3V
12
14
P-ON+9V
14
12
LCD-6.8V
10
16
LCD+13V
5-7
19-21
P-ON+3.3V
15-17
9-11
+3.5V
22-24
2-4
+3.0V
18,19
7,8
LCD+24.5V LCD-6.8V LCD+13V P-ON+3.3V +3.5V +3.0V LCD+3.3V AL+3.3V P-ON+5V P-ON+9V
DIGIT
AL MAIN CB
A UNIT
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.
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F1901) 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.
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