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4-6. AUDIO CIRCUIT (HI-FI)
A. TROUBLESHOOTING OF EE MODE.
No sound in the EE mode
Is +5V supplied to the pin 8, y of IC251? YES
NO
Check the Power circuit.
Is +5V supplied to the pin I of IC251? YES
NO
Is signal input into the in !, @ of IC251 in TV mode? YES
NO Check the PIF circuit.
Is signal output at the pin E, e of IC251? YES
NO
Are the clock and data supplied to the pin %, ^ of IC251? YES
Check the JK601 (RCA JACK) or JK602 (SCART JACK) adjacent circuit.
Check the SYSCON
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