- 2-20 -
PLAY MODE CHECK
IC201 46Pin VCC CHECK
VOLTAGE CHECK LIST
YES
NO
Deck Mecha CHANGE
NO
IC201 3,6 Pin Signal Output CHECK
Muting SECTION CHECK
Deck Mecha MOVE CHECK
YES
NO
IC201 CHANGE
YES
REC CHECK (Q202,Q252 ON:R220,270 HIGH)
IC203 2,8Pin INPUT SIGNAL CHECK
Q202,Q252 Base "Low"CHECK
YES
NO
IC203 3,7 Pin OUT
IC202 6(12V),4 Pin High check
IC203 6Pin VCC volt check
YES
NO
IC203 Troubleshooting
NO
Q202,Q252 CHANGE
YES
L201 2,3PIN check
Power Check,IC202 Troubleshooting
YES
NO
VOLTAGE CHECK LIST
NO
DECK CHANGE
C227(+)INPUT VOLT CHECK
YES
NO
Q205 Base 0.6V CHECK
YES
IC203 Troubleshooting
NO
Q205 Collector Low
YES
Q205 CHANGE
NO
Q204 CHANGE
YES
L201 CHANGE
NO
OK
YES
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 ...
