LG MCV903 - Page 32

3-11
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12. MIC PART CHECK
OK
NO
Check the power at
both terminals ofFB301
Apply JK302, JK303
and check. CN301
2PIN, 4PIN output
Check the P312
2PIN. 4PIN input
Check the IC304
(BA3308) 8 PIN input
Check the P306 15PIN output
(FRONT PCB Ass`y)
Check the P7302 15PIN
input (MAIN PCB Ass`y)
Check the input at both
terminals of R804,812
YES
Check the IC603
1, 2PIN input
MIC PART
Check the
IC304 (BA3308) 3PIN
output
NO
Check
IC304 6PIN 12V
YES
YES
YES
YES
YES
YES
YES
YES
YES