Panasonic DMR-PWT550GL Service Manual page 29

(2) IC Communication of TUNER System
<Diagnosis Result Value>
0
1
2
3
Other
(3) Main P.C.B. IC communication (e.g. B-CAS/EEPROM)
Digital P.C.B. IC communication (e.g. Ether)
<Diagnosis Result Value>
0
2
4
6
Other
No abnormality was detected in communication between the Digital Tuner and
IC.
A communication abnormality occurred between the Digital Tuner (OFDM/Digi-
tal Modulation IC) and IC.
There is a high possibility of Digital Tuner (OFDM/Digital Modulation IC) defect,
or a communication failure between ICs.
A communication abnormality occurred between the Digital Tuner (LNB/Digital
Modulation IC) and IC.
There is a high possibility of Digital Tuner (LNB/Digital Modulation IC) defect, or
a communication failure between ICs.
A communication abnormality occurred between the Digital Tuner (OFDM/Digi-
tal Modulation IC) and IC, Digital Tuner (LNB/Digital Tuner Modulation IC) and
IC.
There is a high possibility of Digital Tuner (OFDM/Digital Modulation IC) defect,
Digital Tuner (LNB/Digital Modulation IC) defect, or a communication failure
between ICs.
The Input Code is not correct. Please check the Diagnosis Code again.
No abnormality was detected.
An abnormality was detected in communication between the EEPROM of main
P.C.B. and IC.
Check the digital P.C.B. and main P.C.B. connection connector.
If there is no problem, malfunction in the main P.C.B. is suspected.
Since a communication failure occurred between CPU and ETHER-LSI as well,
there is a high possibility of digital P.C.B. circuit (such as foil cutting) or parts fail-
ure.
Replace the Digital P.C.B..
A communication failure occurred between EEPROM of main P.C.B. and CPU,
CPU and ETHER-LSI.
Take measures for "2" and "4".
The Input Code is not correct. Please check the Diagnosis Code again.
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