Is the D125 normal?
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY (SMPS)
No .5.3VA
YES
Is the F101 normal?
Replace the F101 (Use the same fuse)
YES
NO
Is the BD101 normal?
Replace the BD101
YES
NO
Is the R101 normal?
Replace the R101
YES
NO
Is Vcc (13V~27V)
supplied to IC101
Pin4?
Is the D102 normal?
YES
NO
NO
Check or replace the D102
Is the D124 normal?
Replace the D124
YES
NO
Is there about 2.5V
at the IC103 Pin1?
Replace the IC103
YES
NO
Is the IC102 normal?
Replace the IC102
YES
NO
Is the D123 normal?
Replace the D123
YES
NO
Is the D121 normal?
Replace the D121
YES
NO
Is the D132 normal?
Replace the D132
YES
NO
Replace the D125
YES
NO
Is the D126 normal?
Replace the D126
YES
NO
Power line of main PCB is short
3-27
Summary of Contents for M56
Page 14: ...MEMO 2 7...
Page 54: ...5 AUDIO PART S PDIF 15 7601_AUD0_SPDIF 15 3 40...
Page 57: ...BLOCK DIAGRAMS 1 OVERALL BLOCK DIAGRAM 3 43...
Page 65: ...MEMO...
Page 80: ...3 79 38 80 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW...
Page 81: ...3 81 3 82 2 SMPS P C BOARD TOP VIEW BOTTOM VIEW...
Page 82: ...3 M56 FPP SUB USB P C Boards TOP VIEW BOTTOM VIEW 3 83 3 84...
Page 83: ...3 85 3 86 4 FRONT TIMER P C BOARD TOP VIEW BOTTOM VIEW...
Page 84: ...6 WI FI P C BOARD TOP VIEW 5 ANALOG 7 1CH P C BOARD TOP VIEW 3 87 3 88 BOTTOM VIEW BOTTOM VIEW...
Page 85: ...3 89 3 90 MEMO MEMO...
Page 97: ...MEMO...
Page 98: ...4 12 4 11 CIRCUIT DIAGRAM...
Page 100: ...4 15 4 16 PRINTED CIRCUIT BOARD DIAGRAMS TOP VIEW...
Page 101: ...4 17 4 18 BOTTOM VIEW...