Panasonic SA-XH70PH, Service Manual, Page: 43 / 127

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10.4. Basic Troubleshooting Guide for HDMI AV output
Problems Checking Points Checking components
1) Check setting of the set in
Setup Menu whether the HDMI
Video output is turned ON * This year HDMI always ON.
No need to check Setup Menu.
If no resolution selection GUI,
then only check SETUP.
2) +5V Supply to the TV IC3952 (Pin 4)
3) HDMI Connector Solderability
condition P3901
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)
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)
- Data, DDCDAT (Pin 46, IC8001)
- Clock, DDCCLK (Pin 47, IC8001)
5) HDMI Transmitter communication
lines to TV
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 '
- Clock (TXCP/TXCN => Pin 10, 12)
- Data (TXD0P/TXD0N => Pin 7, 9)
- Data (TXD1P/TXD1N => Pin 4, 6)
- Data (TXD2P/TXD2N => Pin 1, 3)
* Check for solder short/or
component missing on TDMS line
as well as signal intergrity HDMI
Connector (P3901)
LB3905, R3905, Q3902, R3904
LB3904, R3907, Q3903, R3906
LB3901 (Pin 57)
LB3902, LB3910, R3910 (Pin 59)
LB3906, R3902, R3903, Q3901
C8034, C8006, C8029, C8028,
LB3901 (Pin 57), LB3902, LB3910
(Pin 59)
Pin 1, 2, 5, 6 (IC8651)
Pin 105, 106, 107, 109 (IC8001)
R3901
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