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3.2.
Troubleshooting Guide
3.2.1.
No Power Supply
27M/24M/24.576M
/16.93M/12.28M
No Power
+6V at JK100 between
Pin 2-3
Yes
Check continuity at
IP101
Yes
Is there +3.3V at
pin 4 at IC108 ?
Yes
Oscillating signal
at IC104 ?
Yes
Yes
Yes
+3.3V at
LB118
Yes
Is there output at IC1001
/IC1002 ?
Yes
Is there oscillator signal at
IC1008 ?
Yes
RESET signal at
IC1009 - high ?
Yes
IC1000 or ROM/RAM check
No
AC adaptor / DC Jack Faulty
No
IP101 abnormal
No
IC108 abnormal
No
IC104/X100 abnormal
No
IC104/PANEL P.C.B/IR P.C.B/FFC
No
Q104/QR105 abnormal
No
Check IC100 circuit
No
IC1001/IC1002 circuits
No
IC1008/X1004 circuits
No
IC1009 abnormal
8
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