9-4
Samsung Electronics
9-2 CD
9-2-1 Disc Revolution Malfunction
Power On and CD Function
Is CD : B+ = 8V
Is CD LSI : Vcc = +5V
Check NTR1,NFR1,NIC9258
(SHORT/OPEN)
Yes
No
Yes
Yes
Yes
No
No
-Check Oscillation of MXF1(16.93MHz)
-Check the signal of NC05
(MDATA,MCK,MLT)
-Check the limit switch(#3,#4 of NC03)
-Check pin #43 of KB9223(SLO)
-Check pin #11,#12 of KA9258
Is focus search done
properly?
-Check pin #3 of KB9223(FRSH)
-Check pin #48 of KB9223(FEO)
-Check pin #1,#2 of KA9258
-Check pin #73,#75,#76 of KS9286
-Check pin #23,#24,#25 of KB9223
-Check pin #46 of KB9223(SPDLD)
-Check pin #17,#18 of KA9258
-Check Spindle Motor of CD DECK
-Check pin #69,#70 of KB9223
-Check TR NQ100, Resistor NR14
-Check Laser Diode of pick-up
-Check pin #74,#75 of KB9223
-Check NC125(472)
No
No
No
No
Yes
Yes
Yes
Yes
Does SLED move to inner?
Check Power Line of Main Board
Does laser ON during
focus search?
Is FOK "H"?
Does Disc rotate ?
Next Page
Troubleshooting
Содержание Wingo S-2450
Страница 2: ...ELECTRONICS Samsung Electronics Co Ltd SEP 2000 Printed in Korea Code no AH68 00036D ...
Страница 14: ...Samsung Electronics 5 1 5 Block Diagram 5 1 Main ...
Страница 16: ...Samsung Electronics 6 1 6 Printed Circuit Board Diagram 6 1 FRONT 6 2 Headphone PCB 6 3 Open Close PCB ...
Страница 17: ...6 2 Samsung Electronics 6 4 Jack PCB 6 5 Motor PCB 6 6 POWER S 2400 2450 ...
Страница 18: ...Samsung Electronics 6 3 6 7 MAIN ...
Страница 19: ...6 4 Samsung Electronics 6 8 CD 6 9 MP3 Charge MP3 Jack ...
Страница 20: ...Samsung Electronics 6 5 6 10 Adapter Batt Sense 6 11 ENCODER ...
Страница 21: ...ENCODER PCB DIAGRAM only S2450 Model ...
Страница 22: ...ENCODER PCB DIAGRAM only S2450 Model ...
Страница 23: ...Samsung Electronics 7 1 7 Wiring Diagram Optical Output Option NCW100 ...
Страница 24: ...Samsung Electronics 8 1 8 Schematic Diagram 8 1 Main Part ...
Страница 25: ...8 2 Samsung Electronics 8 2 CD ...
Страница 26: ...Samsung Electronics 8 3 8 3 ENCODER ...
Страница 27: ...ENCODER SCHEMATIC DIAGRAM only S2450 Model ...
Страница 28: ...ENCODER SCHEMATIC DIAGRAM only S2450 Model ...
Страница 41: ...Samsung Electronics 10 5 IC Internal Diagram Audio ICs BA3121 BA3121F BA3121N FBlock diagrams ...
Страница 47: ...Samsung Electronics 10 11 IC Internal Diagram Audio ICs BU1923 BU1923F FBlock diagram ...
Страница 56: ...10 20 Samsung Electronics IC Internal Diagram 10 11 TDA7440D JIC1 ...