Panasonic PT-RS30K Service Manual page 67

SECTION 1 SERVICE INFORMATION
■ Main microprocessor operation check
Check the clock waveform at R3622.
A
35.455MHz
Check the voltage [3.3V] at pin1 of A1 connector and [5V] at pin
A
3.
A Check that the voltage is 1.2V at R3826.
Check IC3716(FLASH ROM) and peripheral circuit.
A
(If there are still problems, go to next step.)
Check IC3721(SRAM) and peripheral circuit.
A
(If there are still problems, go to next step.)
A Check IC3501(CPU) and peripheral circuit.
OK
OK
OK
OK
OK
NG
A Check X3501 and peripheral circuit.
NG
Replace cable [P6] - [A1], and [PF]/[PB]-P.C.Board.
NG
A Check IC3821 and peripheral circuit.
INF-57
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