Basic Troubleshooting Guide For Hdmi Av Output - Panasonic SA-XH201GW Service Manual

10.4. Basic Troubleshooting Guide for HDMI AV output

Problems
1) TV does not have any
display. Set FL display shows
U702/U703
2) When switching the video
output mode from 480p to
720p /1080i, TV display
become blank
3) Error Video Output.
TV screen shows green
Display
4) No audio output from HDMI
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)
- Clock (TXCP/TXCN => Pin 50, 49)
- Data (TXD0P/TXD0N => Pin 52, 51)
- Data (TXD1P/TXD1N => Pin 54, 53)
- Data (TXD2P/TXD2N => Pin 56, 55)
5) HDMI Transmitter communication
lines to TV
- Data, DDCDAT (Pin 46, IC8001)
- Clock, DDCCLK (Pin 47, IC8001)
6) HDMI Transmitter communication
from DVD Decorder (IC8001) +3.3V
Supply
7) HDMI Transmitter DVD Decorder
(IC8001) +1.8 V Supply
8) Hot-Plug Signal
9) HDMI Interface Reference
Resistor
1) Supply to HDMI transmitter
intergrated (IC8001)
2) Check for Capacitor short to GND
Check Digital Signal Data
communication lines from IC8001 to
Serial Flash IC (IC8651)
Check the setting under 'SETUP'
menu if HDMI Audio Output option
is turned 'ON'
43
Checking components
* This year HDMI always ON.
No need to check Setup Menu.
If no resolution selection GUI,
then only check SETUP.
IC3952 (Pin 4)
P3901
HDMI Connector (P3901)
- Clock (TXCP/TXCN => Pin 10, 12)
- Data (TXD0P/TXD0N => Pin 7, 9)
- Data (TXD1P/TXD1N => Pin 4, 6)
- Data (TXD2P/TXD2N => Pin 1, 3)
LB3905, R3905, Q3902, R3904
LB3904, R3907, Q3903, R3906
LB3901 (Pin 57)
LB3902, LB3910, R3910 (Pin 59)
LB3906, R3902, R3903, Q3901
R3901
C8034, C8006, C8029, C8028,
LB3901 (Pin 57), LB3902, LB3910
(Pin 59)
Pin 1, 2, 5, 6 (IC8651)
Pin 105, 106, 107, 109 (IC8001)
* Check for solder short/or
component missing on TDMS line
as well as signal intergrity HDMI
Connector (P3901)
- Clock (TXCP/TXCN => Pin 10, 12)
- Data (TXD0P/TXD0N => Pin 7, 9)
- Data (TXD1P/TXD1N => Pin 4, 6)
- Data (TXD2P/TXD2N => Pin 1, 3)