8
3.2.
Troubleshooting Guide
3.2.1.
No Power Supply
No
AC adaptor / DC Jack Faulty
Yes
No
IP101 abnormal
Yes
No
IC108 abnormal
Yes
No
IC104/X100 abnormal
No
IC104/PANEL P.C.B/IR P.C.B/FFC
Yes
No
Q104/QR105 abnormal
Yes
No
Check IC100 circuit
Yes
No
IC1001/IC1002 circuits
Yes
No
IC1008/X1004 circuits
Yes
No
IC1009 abnormal
Yes
No Power
+6V at JK100 between
Pin 2-3
Check continuity at
IP101
Is there +3.3V at
pin 4 at IC108 ?
Oscillating signal
at IC104 ?
㪧㪦㪮㪜㪩㩷㪪㪮㪆㪩㪜㪤㪦㪫㪜㩷㪚㪦㪥㪫㪩㪦㪣
㪧㫀㫅㩷㪐㩷㪸㫋㩷㪠㪚㪈㪇㪋㩷
㪂㪍㪭㩷㩽㩷㪂㪌㪭㩷㪭㪦㪣㪫㪘㪞㪜㩷
㪘㪫㩷㪨㪈㪇㪋㩷㪖
+3.3V at
LB118
Is there output at IC1001
/IC1002 ?
Is there oscillator signal at
IC1008 ?
RESET signal at
IC1009 - high ?
IC1000 or ROM/RAM check
27M/24M/24.576M
/16.93M/12.28M
Yes
Summary of Contents for MW-20EB
Page 13: ...13 5 Location of Controls and Components 5 1 Main Unit Key Button Operations ...
Page 14: ...14 5 2 Remote Control Key Button Operations ...
Page 16: ...16 6 2 About the internal memory CDs and SDs ...
Page 17: ...17 6 3 Preparation for power source ...
Page 18: ...18 6 4 Connecting Recharging an iPod iPhone ...
Page 19: ...19 6 5 Connection to PC ...
Page 31: ...31 8 2 Types of Screws 8 3 Main Parts Location Diagram ...
Page 62: ...62 ...
Page 82: ...82 ...