Circuit Descriptions
7.
7.2
Power Supply
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 Philips Service web portal for the order codes of the
boards.
The control signals are:
•
Power On (PSU On/Off)
•
Backlight On/Off (BL_On/Off)
•
DIM (PWM-1 to PWM-4)
•
Boost = analog dimming (also PWM), to set the
LED-current.
Three modes of operation:
•
Standby
•
Semi-Standby
•
On
For output voltages to chassis refer to following Table:
Table 7-1 PSU Output Voltages
Note
In this manual, no detailed information is available because of
design protection issues. Refer to GSC in Philips for Servicers
for Electrical diagrams.
7.2.2
Power Architecture
For the power architecture:
•
PSU Connector, refer to Figure
and Figure
.
•
PSU Front End, refer to Figure
•
PSU Back End, refer to Figure
Figure 7-3 Power PSU Connector
Voltage
Testpoint
+3V5-Standby
F003U
+3V3-Standby
F004U
+12V
F009U
+12V-AL
F001U
+5V-SW
F005U
1V2-MTK
F040U
1V5-MTK
F006U
3V3
F008U
1V0-HDMI
F123C
1V1-DVBT2
I002F
3V3-DVBT
F004F
V-LNB
F012F
3V3-LAN
F027U
1V0-M
I057B
1V5-M
F021B
2V5-M
F023B
3V3-NVT
F022B
3V3-BE
1V8
1V2
1V3-HDMI
Voltage
Testpoint
19800_034_151117.eps
15-11-21
AL + Keyboard
CN1106 connector
Wifi + Bluetooth
CN1110 connector
TPS61230
DRCR
U9416
+3V3-WIFI
WIFI-PWR-EN
U4404 or U4405
AMBI-POWER
(2 sides AL)
+12V
CN1190
SIP32429DN-T1-GE4
or AOZ1360DIL5
+3V3
F8203
IR sensor
Standby Led
+
Word mark
Skype
CN1112 connector
+5V-SW
(provision
for TPV)
3D emitter
+3V5-SB
D4300
+12V
(provision for
voice wake up)
+12V
+3V3
Motor
D4303
+3V3
Power Architecture MTK 2k15 - Connector from PSU
+3V5-STANDBY
+3V3-STANDBY
+3V3-STANDBY
+3V3-STANDBY
+3V5-STANDBY
+12V-AMBI
+12V-AMBI
CIP
CN1108 connector
Over
current
protection