- 2-7 -
IC601(NJW1190) TROUBLESHOOTING
IC601 24PIN VOLTAGE INPUT CHECK
IC601 19,20 SDA, SCA PULSE WAVE
CHECK (VOL UP, DOWN TURN CHECK)
IC601 17.22 PIN WAVE OUTPUT CHECK
IC601 OK
FUNCTION INPUT PORT SIGNAL
CHECK(NJW1190 TROUBLESHOOTING)
SMPS VOLTAGE CHECK CONSULT
IC301 10,8PIN CHECK
IC301 TROUBLESHOOTING
IC601 CHANGE
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
AMP MODULE TROUBLESHOOTING
IC501 9 PIN(AMP-PWR)HIGH CHECK
EXPEND IC TROUBLESHOOTING CONSULT
PROTECTION " HIGH"
➞
SMPS VOLTAGE
AND AMP ON/ OFF STATE CHECK
AMP MODULE CHECK : MOS FET BOTH
ARE READ SHORT
➞
AMP DEAD
AMP MODULE CHANGE
IC305 9 PIN(AMP-PWR) HIGH CHECK
IC701 11 PIN "AMP-ON/OFF" HIGH
CHECK
IC701 12 PIN "PROTECTION" LOW
CHECK
PN702 3 PIN "PROTECTION"CHECK
(HIGH
➞
LOW)
NO
NO
NO
IC701 3 ,20 & 5 ,18 EACH +65V &-65V
CHECK
SMPS TROUBLESHOOTING CONSULT
YES
NO
Summary of Contents for LM-U2350A
Page 7: ... 1 6 ...
Page 17: ... 2 10 INTERNAL BLOCK DIAGRAM of ICs HA12237F BLOCK DIAGRAM ...
Page 18: ... 2 11 NJW1190 BLOCK DIAGRAM AF330W20FS BLOCK DIAGRAM ...
Page 20: ... 2 13 AF350W01FS BLOCK DIAGRAM PIN CONFIGURATION ...
Page 22: ...2 15 2 16 BLOCK DIAGRAM ...
Page 23: ...2 17 2 18 WMA_USB BLOCK DIAGRAM ...
Page 24: ...2 19 2 20 SCHEMATIC DIAGRAMS FRONT SCHEMATIC DIAGRAM ...
Page 25: ...2 22 2 21 MAIN SCHEMATIC DIAGRAM ...
Page 26: ...2 23 2 24 DECK SCHEMATIC DIAGRAM ...
Page 27: ...2 26 2 25 MIC SCHEMATIC DIAGRAM ...
Page 28: ...2 27 2 28 USB_AUX2_H P SCHEMATIC DIAGRAM ...
Page 29: ...2 30 2 29 WOOFER AMP SCHEMATIC DIAGRAM ...
Page 30: ...2 31 2 32 AMP SCHEMATIC DIAGRAM ...
Page 31: ...2 34 2 33 POWER SCHEMATIC DIAGRAM ...
Page 32: ...2 35 2 36 POWER SCHEMATIC DIAGRAM ...
Page 33: ...2 37 2 38 SUB POWER SCHEMATIC DIAGRAM ...
Page 34: ...2 39 2 40 CDP SCHEMATIC DIAGRAM ...
Page 35: ...2 41 2 42 USB SCHEMATIC DIAGRAM ...
Page 36: ...2 43 2 44 WIRING DIAGRAMS ...
Page 37: ... PRINTED CIRCUIT DIAGRAMS MAIN P C BOARD 2 45 2 46 ...
Page 38: ...2 47 2 48 MAIN AMP P C BOARD ...
Page 39: ...2 49 2 50 MAIN AMP P C BOARD ...
Page 40: ...2 51 2 52 FRONT P C BOARD ...
Page 41: ...2 53 2 54 CDP P C BOARD ...
Page 42: ...2 55 2 56 CDP P C BOARD ...
Page 43: ...2 57 2 58 POWER P C BOARD ...
Page 44: ...2 59 2 60 POWER P C BOARD ...
Page 45: ...2 61 2 62 SUB POWER P C BOARD ...
Page 46: ...2 63 2 64 WOOFER AMP P C BOARD ...
Page 47: ...2 65 2 66 ...
Page 55: ... 4 4 ...