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EN 24
7.
TPM8.3A LA
7.2
Power Supply
7.2.1
Power Supply Unit
Before checking other parts first check whether fuse on the
PSU is not broken. Always replace a defective fuse with one
with the correct specifications! This part is available in the
regular market.
Consult the Philips Service web portal for the order codes of the
boards.
7.3
Power Management
+24V
+12V
5VSB
5
V
S
B
5VSB
OPWRSB
VCCK(1.2V)
5VSB
+12V
+12V
+12V
LVDS_PWR_EN
STANDBY
AO4449
Q708
+24
+24_SW
D603
The on-board DC/DC converters deliver the following voltages
(depending on set execution):
•
+5V-STANDBY, permanent voltage for the Stand-by
controller, LED/IR receiver and controls; connector CN701
pin 11 and 12.
•
+12V, input from the power supply for panel and tuner;
connector CN701 pins 3 and 4.
•
+24V, input from the power supply for audio (in active
mode); connector CN701 pins 8 and 9.
2011-Nov-11
Circuit Descriptions
3
V
3
S
B
LDO
G903T63UF
U705
BUCK (3A)
VCCK(1.2V)
G5657F12U
U704
AO4449
5V_SW
Q707
DV33_TMDS
AMUX_5V
5V_SW
5V_SW
5V_SW
+5V_TUNER
LDO
G9084TU3U
U7007
5V_SW
PANEL_VCC
AO4449
Q709
5V_SW
+24_AMP
FB603
Figure 7-3 Power Architecture
The output voltages to the chassis are:
•
+5V-STANDBY (Stand-by mode only)
•
+12V (on-mode)
•
+24V for audio circuit
7.2.2
Diversity
The diversity in power supply units is mainly determined by the
diversity in screen sizes, but please note to always order the
correct replacement.
DVDD3V3
BUCK (3A)
5V_SW
3V3_BUCK
TPS54319RTE
U701
AVDD3V3
HDMI SW
TMDS361BPAGR
U501
5VDD
G903T63UF
U709 (NC)
HDMI EEPROM
M24C02
5V_SW
U502
U505
U506
5
V
_
S
W
Audio in /SW
CD4052
U102
V1.2
G912T63U
U708(NC)
EEPROM
CAT24C02YI
U105
V3.3
V3.3
G903T63UF
U707
5V_USB
BUCK (3A)
AOZ1212AI
U703
+B_5V
60Hz
PANEL CON
CN414
LDO
Aud3V3
G903T63UF
U607
MAX9728AETC+
U606
HP AMP
ADAC_PWR
NVRAM
DVDD3V3
CAT24C128YI
U405
NAND FLASH
DVDD3V3
HY27US08561A-TPCB
U403
Nor flash
DVDD3V3
MX25L6445
U404 (NC)
BUCK (1.5A)
SC189ASK
U706
BUCK (1.5A)
5
V
_
S
W
SC189ASK
U702
VDD1V2
De_mod
ATBM8848
VDD33
U101(NC)
ASIC_3V3
USB Connect
VUSB_5V
CN103
CN104
V3.3
TUNER
TU101
+B_5V
(ATV)
+24_AMP
STA339BWTR
U602
Aud3V3
AUDIO AMP
+24V_AMP
STA515W
U603
Aud_3V3
WOOFER AMP
DVDD3V3
DV33SB
VCCK (1.2V)
MT5301B
U401
AVDD1V2
DDRV(1V5)
DDR2
NT5TU64M16DG-BD
DDRV(1.5V)
1Gb U402
19170_207_110704.eps
111107
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