- 2-19 -
PLAY
Check the B+ Power to LEAF Switch
Checks the B+ power to Q201 “E”
Check the CN901 pin8, 9 and IC903 output
Check the signal to
IC202 pin4, 11
Check the SW201 and
HEAD connector
Check the output to
speaker
Check the CN202
Check the CN201
YES
YES
YES
YES
NO
NO
NO
REC
Check the signal input of IC201 pin4, 11
Check the of CN201 pin4, 5
Check the oscillation of L201
Check the signal input to
PN201 pin8, 9
Check the HEAD connector
Check the B+ of LEAF
switch
Check the R218,
L201, L204
YES
YES
YES
NO
NO
NO
Summary of Contents for LX-140
Page 1: ...MICRO COMPONENT...
Page 6: ...1 5 SPECIFICATIONS...
Page 7: ...1 6 MEMO...
Page 9: ...2 2 CD PART TROUBLESHOOTING...
Page 10: ...2 3 OPEN CLOSE NG...
Page 11: ...2 4 READING DISPLAY CHECK ONLY CD DISPLAY...
Page 12: ...2 5 READING OK CHECK NO DISC DISPLAY...
Page 13: ...2 6 READING OK CHECK A NO DISC DISPLAY...
Page 14: ...2 7 READING OK CHECK B NO DISC DISPLAY...
Page 15: ...2 8 READING OK CHECK C NO DISC DISPLAY...
Page 16: ...2 9 READING OK CHECK D NO DISC DISPLAY...
Page 17: ...2 10 READING OK CHECK E NO DISC DISPLAY...
Page 18: ...2 11 WAVEFORMS OF MAKOR CHECK POINT...
Page 20: ...2 13 AUDIO PART...
Page 21: ...2 14...
Page 22: ...2 15...
Page 23: ...2 16...
Page 27: ...2 20 MEMO...
Page 28: ...BLOCK DIAGRAM 2 21 2 22...
Page 29: ...2 23 2 24 SCHEMATIC DIAGRAMS FRONT POWER SCHEMATIC DIAGRAM...
Page 30: ...2 25 2 26 MAIN DECK SCHEMATIC DIAGRAM...
Page 31: ...2 27 2 28 TUNER SCHEMATIC DIAGRAM...
Page 32: ...2 29 2 30 CDP SCHEMATIC DIAGRAM...
Page 33: ...2 31 2 32 WIRING DIAGRAM...
Page 34: ...2 33 2 34 PRINTED CIRCUIT DIAGRAMS FRONT P C BOARD...
Page 35: ...2 35 2 36 MAIN P C BOARD...
Page 36: ...2 37 2 38 CDP P C BOARD...
Page 37: ...2 39 INTERNAL BLOCK DIAGRAM OF ICs IC300 LC87F73C8A 1 Pin Assignment...
Page 38: ...2 40 IC601 TDA7468D 1 BLOCK DIAGRAM...
Page 39: ...2 41 2 PIN CONNECTION...
Page 40: ...2 42 IC301 BU1923 1 BLOCK DIAGRAM...
Page 41: ...2 43 IC102LA1837 1 BLOCK DIAGRAM IC102LA1837 2 Test Circuit Diagram...
Page 42: ...2 44 IC103 LC72131D 1 Pin Assignments...
Page 43: ...2 45 IC201 AN7312 1 BLOCK DIAGRAM IC701 LA4631 1 BLOCK DIAGRAM...
Page 46: ...4 1 SECTION 4 SPEAKER SECTION MODEL LXS M140 855 854 853 852 851 861 850 850...
Page 47: ...4 2 MEMO...
