Philips 22HFL5662H/F7 Service Manual page 30

EN 30 7. TPB1.2HU LA
7.2 Power Architecture
Refer to figure Figure 7-4
platform (DC/DC power conversion).
24V
Standby 3.3V
12V
7.2.1 Power Supply Unit
Refer to the Wiring Diagram 22"
Before repair or replacement check whether 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.
The output voltages to the chassis are:
• +3.3 stand-by/power
• +24V audio power
• +12V panel
2011-Mar-11
Circuit Descriptions
for the power architecture of this
Switching Power
SC4525B
5V
5V
LDO
G1084-3.3V
3.3V
1.2V
LDO
G912T43U-1.2V
Figure 7-4 Power architecture of back-end board
for connector information.
IR/Key
Scaler
Audio Amp
FX18(Smart Module)
Panel T-CON
Clock module
Zigbee module
18890_214_100927.eps
101018