FUNAI LT6-M32BB - Power Supply Block Diagram

7-7
A8CF0BLP
Power Supply Block Diagram
HOT
HOT
COLD
POWER SUPPLY CBA
INVERTER CBA
HOT CIRCUIT. BE CAREFUL.
Q401
SWITCHING
CONTROL
14
3 2
IC603
T400
CLN400
TO INVERTER BLOCK DIAGRAM
CN1901
3
HOT-GND 2 ACL 1
3 1
LINE FILTER
L1901
AC1901 AC CORD
LINE FILTER
L1902
BRIDGE RECTIFIER
D1901 - D1904
5
11 14 12 17 18 13 16 15
19
9 7 8
FEED
BACK
Q400
SWITCHING
Q631
Q632,Q634
SWITCHING
Q646
SW-6.8V
Q600
Q645,D648
SW+13V
Q650
IC637
+3.3V
REG.
23
JS651
Q633
Q639,Q671
JS652
Q637
SW+5V
Q602
SW+9V
Q638,D634
SW+3.3V
P-ON-H1
TO SYSTEM CONTROL BLOCK DIAGRAM
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
ACL HOT-GND
CN104A CN3601 CN101A CN3701 CN102A CN4503
LCD+24.5V8
18
AL+3.3V3
23
P-ON+5V1,2
24,25
LCD+3.3V12
14
P-ON+9V14
12
LCD-6.8V10
16
LCD+13V5-7
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
DIGITAL MAIN CBA 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.