MP3/CD Section
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Trouble Shooting Guide
1
2
3
4. Focusing operation
5. Spindle motor rotation
6. Read in CD/MP3 disc operation
7. Read in USB file and USB Encoding operation
Focusing
operation
Yes
no
1. Check (IC502 SA5888 of 13pin and 14pin)
13pin 3.95V >>3.99V, pin18 3.72V >> 3.75V >>>
in case of play.
2. Check +1.58V(IC500 M5675 of 126pin).
Spindle motor
rotation
Yes
no
1. Check SPDO +1.90V(IC500 M5675 of 123Pin)
in case of play
。
2. Check (IC502 SA5888 of 12pin and 11pin) SL- 3.81V,
SL+ 3.91V.
3. Check (IC502 SA5888 of 17pin and 18pin)SP+ 4.41V ,
SP- 3.41V
Read in CD/MP3
disc
Yes
no
Yes
1.Check CN704
2.Check IC707(MCU IC) of 23/24/25/26/27/28pin
3.Check IC705 of 5/12/13pin
4. Check CN502,CW504.CN505
5. Check IC504 of 3pin:5.0V
6. Check Q501 col3.3V
7. Check +3.3V (IC500 pin8/18/23/25/38/57/85/113/116/122)
8. Check (IC502 SA5888 of 17pin and 18pin)SP+ 4.41V ,
SP- 3.41V
9. Check SPDO +1.90V (IC500 M5675 pin123)
10. Check (IC502 SA5888 of 12pin and 11pin) SL- 3.81V,
SL+ 3.91V
11. Check CD Board(Around IC solder short,cold soldering )
Yes
Read in USB file
operation
1. Check IC500(M5675) of 52pin and 53pin.
2. Check CW507,CN707.
3. Check J702.
no
USB Encoding
no
1. Check IC500 (M5675) of 52pin and 53pin.
2. Check CN502 7pin 8pin and 9pin.
3. Check IC500(M5675) 40pin,43pin input signal.
4. Check IC500(M5675) 33pin,36pin output signal.
Summary of Contents for NC-8112E
Page 3: ...Safety Precautions 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9...
Page 4: ...1 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 Safety Precautions 1...
Page 19: ...3 3...
Page 21: ...4 4 Wiring Diagram Only NC 8112E Model...
Page 22: ...4 4 Wiring Diagram Only NC 8114E NC 8115E Model...
Page 23: ...4 4 Wiring Diagram Only NC 8117E Model...
Page 24: ...5 5 Block Diagram Only NC 8112E Model...
Page 25: ...5 5 Block Diagram Only NC 8114E NC 8115E Model...
Page 26: ...5 5 Block Diagram Only NC 8117E Model...
Page 27: ...6 6 Schematic Diagram FRONT TUNER Section...
Page 28: ...7 7 Schematic Diagram MP3 CD Section...
Page 29: ...6 6 Schematic Diagram MAIN Section Only NC 8112E Model...
Page 30: ...6 6 Schematic Diagram MAIN Section Only NC 8114E NC 8115E Model...
Page 31: ...6 6 Schematic Diagram MAIN Section Only NC 8117E Model TI POWER...
Page 32: ...6 6 Schematic Diagram SMPS Section Only NC 8112E Model...
Page 34: ...6 6 Schematic Diagram SMPS Section Only NC 8117E Model...
Page 35: ...7 7 P C B Pattern Layout FRONT Section Top View...
Page 36: ...7 7 P C B Pattern Layout FRONT Section Bottom View...
Page 37: ...7 7 P C B Pattern Layout TUNER Section Top View...
Page 38: ...7 7 P C B Pattern Layout TUNER Section Bottom View...
Page 39: ...7 7 P C B Pattern Layout MP3 CD Section Top View...
Page 40: ...7 7 P C B Pattern Layout MP3 CD Section Bottom View...
Page 41: ...7 7 P C B Pattern Layout MAIN Section Only NC 8112E Model Top View...
Page 42: ...7 7 P C B Pattern Layout MAIN Section Only NC 8112E Model Bottom View...
Page 43: ...7 7 P C B Pattern Layout MAIN Section Only NC 8114E NC 8115E Model Top View...
Page 44: ...7 7 P C B Pattern Layout MAIN Section Only NC 8114E NC 8115E Model Bottom View...
Page 45: ...7 7 P C B Pattern Layout MAIN Section Only NC 8117E Model Top View...
Page 46: ...7 7 P C B Pattern Layout MAIN Section Only NC 8117E Model Bottom View...
Page 47: ...7 7 P C B Pattern Layout SMPS Section Only NC 8112E Model Top View...
Page 48: ...7 7 P C B Pattern Layout SMPS Section Only NC 8112E Model Bottom View...
Page 49: ...7 7 P C B Pattern Layout SMPS Section Only NC 8114E NC 8115E Model Top View...
Page 50: ...7 7 P C B Pattern Layout SMPS Section Only NC 8114E NC 8115E Model Bottom View...
Page 51: ...7 7 P C B Pattern Layout SMPS Section Only NC 8117E Model Top View...
Page 52: ...7 7 P C B Pattern Layout SMPS Section Only NC 8117E Model Bottom View...
Page 57: ......
