Philips 32HFL5662L/F7 - Page 24

Circuit Descriptions
EN 24 TPB1.1HU LA7.
2010-Nov-05
Figure 7-4 I2C Architecture of smart module board
7.1.2 TPB1.1HU back-end board architecture overview
For details about the chassis block diagrams refer to chapter 9.
Block Diagrams. An overview of the TPB1.1HU LA
architecture can be found in Figure 7-5
.
Figure 7-5 Back-end board architecture of TPB1.1HU LA
7.1.3 TPB1.1HU smart link board architecture overview
For details about the chassis block diagrams refer to
chapter 9. Block Diagrams
. An overview of the TPB1.1HU LA
architecture can be found in Figure 7-6
.
Troubleshooting
The following tests could help to analyze the failures:
1. RSSI (Received Signal Strength Indication) Test Fails:
Check both high TX and low TX oscillators, 7T94, 7T95
and surrounding components, switch IC 7T92 and TX amp
7T97 and surrounding components.
2. High and/or Low Test Fails: Check RF path, 1T43, 1T44,
5TB3 and surrounding components.
3. Game/Data Test Fails: Check MCU 7T71, level shifter
7T01 and 7T02.
4. TV Interface Test Fails: Check MCU 7T71.
5. TV Test Fails: Check RF path, 1T43, 1T44, 5TB3 and
surrounding components.
6. Code Version and Address Test Fails: It means the RF
communication loop does not work properly. Check 7T91,
its oscillator(s)1T41, 1T47 and filter 1T42. Check MCU
7T71.
18890_218_101020.eps
101020
FX18
Scaler
RTD2472FD-GR
RTD2482FD-GR
Audio Amp
BD5444EFV
Panel
Connector-40 pin
Zigbee Module
Connector-5 pin
Clock Module
Connector-6 pin
IR /Key Board
Connector-9 pin
Speaker
Connector-4 pin
Control signal
HDMI
IBC(RS232)
Flash
EEPROM
Audio R/L
LVDS
RS232
I2C
Key Voltage to ADC
18890_211_100927.eps
101018