Philips 20PHH4109/88 Service Manual page 45

PWR_12V_AUD
C
PWR_12V
B
PWR_12V/5V
A
<2.5A
+5V_STB
12V
Q757
12V
Q750
5V-STB
AON4421
Figure 7-8 DC/DC converters ( for 20"/22"/24"/40"/47"PxH4109/88 & 20"/24"PxH4109/60)
Circuit Descriptions
POWER SWITCH
AON4421
Q757
Depend on panel
POWER SWITCH
PWR_12V
AON4421
+5V_STB
Q750
PANEL_VCC_ON/OFF
BUCK CONVERTER
+5V_STB
RT8079ZQW DV11
U701
<1.7A
PWR_ON
LDO
+5V_STB
AP2125N_0.3A DV33SB
U704
POWER SWITCH
+5V_STB +5V_SW
AON4421
Q701
PWR_ON
LDO
+5V_SW
G1117_1A
U101_SOT-223
POWER protect
+5V_SW
G5250M1T1U
U102
LDO
+5V_SW G1117_1A
U702_SOT-223
BUCK CONVERTER
AP3417C_1.2A
+5V_SW
U703_SOT_23_5
LDO
+5V_SW G1117_1A
U705_SOT-223
PVDD
AMP STA381BWTR
PANEL_VCC
back to
div. table
TPN14.1E LA
AUDIO AMP
PVDD
STA381BWTR
PANEL_T-CON
+5V or +12V
PANEL_22"
~55"
MAIN CHIP
<1820mA
NT72567BG
1mA
MAIN CHIP
<10mA
NT72567BG
USB multi-media
500 mA
USB PWR
SILICON TUNER
? = <230 mA
+5V_TUNER
ST03CS-2-E
PCMCIA CARD
VCC_CI
CI CARD PWR
CI_PWR_EN
MAIN CHIP
<210 mA
DV33
NT72567BG
MAIN CHIP
<430 mA NT72567BG
DV15
? = <370 mA
MAIN CHIP
? = <290 mA
AV25 NT72568
7. EN 45
NAND FLASH
K9F1G08U0D
-SIB0
? = <210 mA
DDRIII
DV15 K4B2G1646E
-BCH9
19530_206_130812.eps
130812
2014-Feb-21