Basic Troubleshooting Guide For Hdmi Av Output - Panasonic SA-PT550GCP Service Manual

SA-PT550GCP

22.2. Basic Troubleshooting Guide for HDMI AV output

Problems
1) TV does not have any
display. Set FL display
shows U702/U703
Checking Points
1) Check setting of the set
in Setup Menu whether the
HDMI Video output is
turned On
2) +5V Supply to the TV
3) HDMI Connector
Solderability condition
4) HDMI Output TDMS
signal lines (IC3901)
- Data (Pin 72, 73, 76,
77, 80, 81)
- Clock (Pin 10,12)
5) HDMI Transmitter
communication lines to TV
- Data, SDA (Pin 120,
IC8001)
- Clock, SCL (Pin
121, IC8001)
6) HDMI Transmitter
communications from LSI
(IC8001)
7) Local Port Slave Address
setting resistor
8) HDMI Transmitter
+3. 3V Supply
9) HDMI Transmitter
+1.2V Supply
10) HDMI Up -Con +3.3V
Supply
11) HDMI Pixel Clock
Output from Up -Con to
HDMI Transmitter
12) Up -Con IC I2C Data
and Clock Line
13) Hot -Plug Signal
14) TDMS Output swing
amplitude control resistor
15) Host Interface External
Input Clock from LSI
(IC8001) to Up - Con IC
(IC3901) OSC27M
16) Video Data Lines from
LSI (IC8001) to Up-Con
(IC3901)
120
Checking Components
*This year HDMI always
ON. No need check Setup
Menu.
If no resolution selection
GUI, then only check
SETUP.
IC3952 (Pin 4)
P3901
L3903, L3904, L3905,
L3906
LB3905, R3905, Q3902,
R3904
LB3904, R3907, Q3903,
R3906
RX3901
R3921
LB3901, IC3901 (Pin 26,
42, 47, 52, 70, 84, 100, 106,
115)
IC3901 (Pin 5, 26, 47, 42,
55, 75, 85, 102, 109, 116,
123), LB3908, IC8151 (Pin
2, 4)
LB3901
R8902
RX3706
LB3906, R3902, R3903,
Q3901, D3901
R3901
LB8702
RX3707, RX3708