4-1
ELECTRICAL TROUBLESHOOTING GUIDE
SECTION 4 DVD PART ELECTRICAL
1. POWER
POWER ON
CHECK DVD
MD MODULE.
OK
YES
YES
YES
YES
YES
DOES
DVD / CD APPER
AT FLD?
DOES
DISK1 APPEAR
AT FLD?
DOES
IT APPEAR DVD ERROR
AT FLD?
PUSH KARAOKE
DVD BUTTON
MICOM
(IC302) CHANGE
YES
DOES
AUX, FM 87.5 APPEAR
AT FLD?
YES
CHECK
CONNECTOR PN709
CHECK CONNECTOR
(P4703, P4004, CN709).
CHECK AN AUDIO
MICOM OR INTERFACE
RECONNECT (P4703)
DOES NO
DISC OR TIME ARE
APPEARED AT
FLD?
NO
NO
CHECK
THE VOLTAGE OF
EACH PIN ON
CN709
NO
NO
NO
NO
YES
OK
RECONNECT
IT.
Summary of Contents for MDS902S
Page 9: ...1 8 MEMO ...
Page 17: ...2 15 2 16 MEMO MEMO ...
Page 18: ...2 17 PACKING ACCESSORY SECTION ...
Page 31: ...3 13 INTERNAL BLOCK DIAGRAM OF ICs 1 HA12237F BLOCK DIAGRAM ...
Page 32: ...3 14 2 NJW1190 BLOCK DIAGRAM 3 AF330W20FT 3 1 PIN CONFIGURATION ...
Page 33: ...3 15 3 2 BLOCK DIAGRAM 3 3 PIN DESCRIPTION ...
Page 34: ...3 16 4 AF350W01FT 4 1 PIN CONFIGURATION 4 2 BLOCK DIAGRAM ...
Page 35: ...3 17 4 3 PIN DESCRIPTION ...
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 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP VIEW ...
Page 48: ...3 42 3 43 MAIN P C BOARD BOTTOM VIEW ...
Page 49: ...3 44 3 45 2 SMPS POWER P C BOARD 3 SUB SMPS POWER P C BOARD ...
Page 50: ...3 46 3 47 4 FRONT P C BOARD TOP VIEW ...
Page 51: ...3 48 3 49 FRONT P C BOARD BOTTOM VIEW ...
Page 52: ...3 50 3 51 5 AMP P C BOARD TOP VIEW BOTTOM VIEW ...
Page 53: ...3 52 3 53 6 WOOFER AMP P C BOARD MEMO ...
Page 65: ...4 12 8 TRACKING SIGNAL 1 Tro 2 Tr 3 Tr 9 RF WAVEFORM ...
Page 66: ...4 13 10 DISK TYPE JUGEMENT WAVEFORM 1 F 2 FDO 3 SVRRF DVD CD ...
Page 67: ...4 14 MEMO ...
Page 68: ...4 15 4 16 SCHEMATIC DIAGRAMS 1 MPEG SCHEMATIC DIAGRAM ...
Page 69: ...4 17 4 18 2 SERVO SCHEMATIC DIAGRAM ...
Page 70: ...4 19 4 20 3 USB SCHEMATIC DIAGRAM ...
Page 71: ...4 21 4 22 4 INTERFACE SCHEMATIC DIAGRAM ...
Page 72: ...4 23 4 24 DVD P C BOARD TOP VIEW PRINTED CIRCUIT DIAGRAM ...