Panasonic DMR-UBS80EG Service Manual page 21

(3) Main P.C.B. IC communication (e.g. EEPROM)
Digital P.C.B. IC communication (e.g. Ether)
< Diagnosis Result >
0
2
4
6
Other
Example: Communication error between Ether-LSI and CPU
5. HDMI (SUB) Diagnosis (DMR-UBS90EG)
< Diagnosis Result >
0
2
Other
No trouble found.
Communication error between the EEPROM of Main P.C.B. and IC.
Check the connection between digital P.C.B. and Main P.C.B.
If no trouble found, malfunction on the Main P.C.B. is suspected.
Communication error between CPU and ETHER-LSI.
There is a high possibility of parts failure on the digital P.C.B.
Communication error between CPU and EEPROM of Main P.C.B., and CPU and ETHER-LSI.
Take measures of above "2" and "4".
Try to run self diagnosis again.
No trouble found on the digital P.C.B.
Communication error between CPU and HDMI-LSI,
There is a high possibility of parts failure on the digital P.C.B.
Try to run self diagnosis again.
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