- 2-18 -
IC301 Troubleshooting
IC204 Troubleshooting
IC301 TROUBLE SHOOTING
IC301 17,46,72,90 INUT VOLT.CHECK
VOLTAGE CHECK LIST
YES
NO
IC301 26Pin 5V INPUT CHECK
P-SENS SECTION CHECK
YES
NO
X301 CHECK
X301 CHANGE
YES
NO
IC301 17Pin VOLT INPUT (Low
➝
High)
OK
RESET SECTION CHECK
YES
NO
IC204 16Pin INUT VOLT.CHECK
VOLTAGE CHECK LIST
YES
NO
IC204 2,3 Pin CLK Data CHECK
IC301 3,4Pin Data CHECK (CD,TAPE FUNCTION MODE)
YES
NO
CONTROLL FUNC.CHECK
OK
IC204 CHANGE
YES
NO
IC301 CHANGE
IC301,IC204 pattern check
YES
YES
NO
Summary of Contents for LX-U250A
Page 7: ... 1 6 ...
Page 29: ... 2 22 INTERNAL BLOCK DIAGRAM of ICs NJW1190 BLOCK DIAGRAM ...
Page 30: ... 2 23 PIN FUNCTION SSOP44 ...
Page 31: ... 2 24 PIN FUNCTION QFP48 P1 ...
Page 35: ... 2 28 PIN DESCRIPTION ...
Page 36: ... BLOCK DIAGRAM 2 29 2 30 ...
Page 37: ...2 31 2 32 WMA USB BLOCK DIAGRAM ...
Page 38: ...2 33 2 34 SCHEMATIC DIAGRAMS MAIN SCHEMATIC DIAGRAM ...
Page 39: ...2 35 2 36 FRONT SCHEMATIC DIAGRAM ...
Page 40: ...2 37 2 38 POWER SCHEMATIC DIAGRAM ...
Page 41: ...2 39 2 40 DECK SCHEMATIC DIAGRAM ...
Page 42: ...2 41 2 42 CD SCHEMATIC DIAGRAM ...
Page 43: ...2 43 2 44 USB SCHEMATIC DIAGRAM ...
Page 44: ...2 45 2 46 WIRING DIAGRAM ...
Page 45: ...2 47 2 48 PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD ...
Page 46: ...2 49 2 50 FRONT P C BOARD ...
Page 47: ... CDP P C BOARD COMPONENT SIDE 2 51 2 52 ...
Page 48: ...2 53 2 54 CDP P C BOARD SOLDER SIDE ...
Page 49: ...2 55 2 56 LINEAR POWER ...
Page 53: ...3 5 3 6 ...
Page 54: ... 4 1 MODEL LXS U250 850 851 860 852 857 856 855 854 853 861 SECTION 4 SPEAKER SECTION ...
Page 55: ... 4 2 ...
