3-1
ELECTRICAL TROUBLESHOOTING GUIDE
SECTION 3 AUDIO PART ELECTRICAL
1. POWER (SMPS)
NO POWER
CHECK AC
LINE PATTERN
CONNECT
THE OPEN LINE
CHECK F901 FUSE
REPLACE FUSE
CHECK BD901 + TO
- PIN IMPEDANCE
LOW IMPEDANCE
CHANGE ASSY
CHECK C986
VOLT(5.6V)
CHECK LINE SHORT
CHECK CONNECTION
CN902, CN903
NO SOUND
INSERT POWER CORD
AFTER 10 SECONDS
CHECK THE AMP
MODULE SHORT
CHECK C961, C951
VOLT (OVER 40V)
CHANGE
FR971, 972, 974, 975
CHECK C958, C968
VOLT (OVER 9V)
PORTECTION
CHECK NO SOUND LISTS
DISPLAY INSERT POWER
CORD AFTER 1 MINUTE
Summary of Contents for MCS902AW
Page 7: ...1 6 REMOTE CONTROL ...
Page 9: ...1 8 MEMO ...
Page 16: ...2 13 2 14 A90A A90B WIRE92 959 958 957 960 951 952 950 A91 961 962 958 3 MODEL MCS902W ...
Page 18: ...2 17 PACKING ACCESSORY VIEW ...
Page 30: ...3 12 INTERNAL BLOCK DIAGRAM OF ICs 1 HA12237F ...
Page 31: ...3 13 2 NJW1190 3 AF330W20FT 3 1 PIN CONFIGURATION ...
Page 32: ...3 14 3 2 BLOCK DIAGRAM 3 3 PIN DESCRIPTION ...
Page 33: ...3 15 4 AF350W01FT 4 1 PIN CONFIGURATION 4 2 BLOCK DIAGRAM ...
Page 34: ...3 16 4 3 PIN DESCRIPTION ...
Page 35: ...3 17 MEMO ...
Page 36: ...3 18 3 19 WIRING DIAGRAM ...
Page 37: ...3 20 3 21 BLOCK DIAGRAM ...
Page 40: ...3 26 3 27 3 AUDIO MAIN SCHEMATIC DIAGRAM ...
Page 41: ...3 28 3 29 4 DECK SCHEMATIC DIAGRAM ...
Page 42: ...3 30 3 31 5 USB AUX2 HEADPHONE AMP SCHEMATIC DIAGRAM ...
Page 43: ...3 32 3 33 6 I O JACK SCHEMATIC DIAGRAM ...
Page 44: ...3 34 3 35 7 AMP SCHEMATIC DIAGRAM ...
Page 45: ...3 36 3 37 8 WOOFER AMP SCHEMATIC DIAGRAM ...
Page 46: ...3 38 3 39 9 FRONT SCHEMATIC DIAGRAM ...
Page 47: ...3 40 3 41 1 MAIN P C BOARD PRINTED CIRCUIT DIAGRAMS ...
Page 48: ...3 42 3 43 2 SMPS POWER P C BOARD 3 SUB SMPS POWER P C BOARD ...
Page 49: ...3 44 3 45 4 FRONT P C BOARD ...
Page 50: ...3 46 3 47 5 AMP P C BOARD TOP VIEW BOTTOM VIEW ...
Page 51: ...3 48 3 49 6 WOOFER AMP P C BOARD MEMO ...
Page 64: ...4 13 4 14 SCHEMATIC DIAGRAMS 1 CD SCHEMATIC DIAGRAM ...
Page 65: ...4 15 4 16 2 USB SCHEMATIC DIAGRAM ...
Page 66: ...CD P C BOARD TOP VIEW BOTTOM VIEW PRINTED CIRCUIT DIAGRAM 4 17 4 18 ...
Page 67: ...4 19 4 20 MEMO MEMO ...