Circuit Descriptions
7.
7.2
Power Architecture
Refer to figure
for the power architecture of this
platform (DC/DC power conversion).
Figure 7-3 Power Architecture
7.2.1
Power Supply Unit
All power supplies are a black box for Service. When defective,
a new board must be ordered and the defective one must be
returned, unless the main fuse of the board is broken. Always
replace a defective fuse with one with the correct
specifications! This part is available in the regular market.
Consult the Service website for the order codes of the boards.
The output voltages to the chassis are:
•
+5-STANDBY (stand-by-mode only)
•
+12V (panel-on)
•
+24V (audio power)
DDR2
U4201
U4202
+
3
V
3
_ON
TUNER
TU1601
NVT726
33
U4101
+5V_ON
TU1602
+12V
S
I4
83
5
Q7106
S
Y
S
TEM_PWR_EN
G90
3
T6
3
UF
U720
3
G912T6
3
U
+
3
.
3
V_
S
TBY
+5V_
S
TBY
G5657F
U7210
1V
8
_NT
FLA
S
H
U4205
G5657F
U7211
PANEL_ON
VDD1V2_
S
TBY
AP10
8
4D
U7205
24C02
U1101
U5102
U510
3
A
u
dio OP
U1401
U1501
U6202
U5101
HDMI
S
W
+5V
M24C
3
2
U4102
G10
8
4
U7201
+24V_16V_
S
W
AD
8
25
8
1B
U620
3
+24V_16V
Q6102
S
I4
83
6
1
8
V_PWR_
S
W
FOR PANEL POWER 5V
U7209
S
C1
8
9
+1V2_ON
U7204
P
a
nel
1
88
60_20
8
_100507.ep
s
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