Panasonic PT-52DL52, Руководство по обслуживанию

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When symptoms like “the power fails sometimes” or “sometimes there is no picture and/or
sound” can not be confirmed at the time of servicing, the self-check function can be used to
confirm the occurrenceand to find the defective circuit.
In case of “power failure”, flashing of the “POWER” indication (red) at the front of the unit can be
used to narrow down the +B line.
7.1. Self-check of the microcomputer control system (bus line)
Indicaton method
Press the Power “ACTION” button in the control panel of the unit simultaneously with the
“VOLUME DOWN” button in the control panel of the unit. Hold them few seconds.
Return to he normal screen
Press any button on the unit or in the remote control.
Screen Display
Display Ref. No. Description Board
MEMORY IC1142 EEPROM for Main MPU DG
SOUND IC2451 Sound Control H
YUV_SW IC2501 YUV switch H
DG_EEP IC1004 EEPROM for DG MPU DG
GC2M1 IC9007 Global Core 2 for main DG
GC2S1 IC9012 Global Core 2 for sub DG
DG_JLC IC9066 External I/O DG
TNR1 TNR001 Tuner 1 A
MTS IC2201 Multiplex sound A
AVSW IC3001 AV switch 1 A
HAD IC9044 HD A/D conversion DG
GC2M2 IC9007 Global Core 2 for main DG
GC2S2 IC9012 Global Core 2 for sub DG
AMDP2 IC9039 AMDP DG
TNR2 TNR002 Tuner 2 A
JLC IC2506 External I/O H
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