3-1
SECTION 3 ELECTRICAL
CONTENTS
ONE POINT REPAIR GUIDE
............................................................................................................................
3-2
1. NO POWER PROBLEM ......................................................................................................................... 3-2
2. SPEAKER NO AUDIO OUTPUT ............................................................................................................ 3-3
3. USB NO OUTPUT .................................................................................................................................. 3-4
4. NO BOOTING ......................................................................................................................................... 3-5
ELECTRICAL TROUBLESHOOTING GUIDE
...................................................................................................
3-6
1. POWER (SMPS) ..................................................................................................................................... 3-6
2.
μ
-COM PART CHECK-1 ......................................................................................................................... 3-7
3.
μ
-COM PART CHECK-2 ......................................................................................................................... 3-7
4. FLD DISPLAY CHECK ........................................................................................................................... 3-8
5. TOUCH PART CHECK ........................................................................................................................... 3-9
6. AMP PART CHECK .............................................................................................................................. 3-10
7. TUNER FUNCTION CHECK................................................................................................................. 3-11
8. DAB FUNCTION CHECK (OPTIONAL) ................................................................................................ 3-12
9. BLUETOOTH FUNCTION CHECK (OPTIONAL) ................................................................................. 3-12
10. USB FUNCTION CHECK ...................................................................................................................... 3-13
11. CD FUNCTION CHECK ........................................................................................................................ 3-14
WAVEFORMS
..................................................................................................................................................
3-15
1. SERVO .................................................................................................................................................. 3-15
2. MOTOR DRIVE ..................................................................................................................................... 3-16
3. AUDIO PATH ........................................................................................................................................ 3-17
4. ADC ....................................................................................................................................................... 3-19
5. USB ....................................................................................................................................................... 3-20
6. CRYSTAL .............................................................................................................................................. 3-21
WIRING DIAGRAM
..........................................................................................................................................
3-23
BLOCK DIAGRAM
..........................................................................................................................................
3-25
CIRCUIT DIAGRAMS
......................................................................................................................................
3-27
1. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-27
2. MAIN - MICOM CIRCUIT DIAGRAM .................................................................................................... 3-29
3. MAIN - MPEG CIRCUIT DIAGRAM ...................................................................................................... 3-31
4. MAIN - RF SERVO CIRCUIT DIAGRAM .............................................................................................. 3-33
5. MAIN - I/O & ADC CIRCUIT DIAGRAM ............................................................................................... 3-35
6. MAIN - PWM & AMP CIRCUIT DIAGRAM ........................................................................................... 3-37
7. MAIN - DC/DC CIRCUIT DIAGRAM ..................................................................................................... 3-39
8. VFD CIRCUIT DIAGRAM...................................................................................................................... 3-41
9. TOUCH CIRCUIT DIAGRAM ................................................................................................................ 3-43
10. TOP JACK CIRCUIT DIAGRAM ........................................................................................................... 3-45
CIRCUIT VOLTAGE CHART
...........................................................................................................................
3-47
1. ICs ......................................................................................................................................................... 3-47
2. CAPACITORS ....................................................................................................................................... 3-49
3. CONNECTORS ..................................................................................................................................... 3-50
PRINTED CIRCUIT BOARD DIAGRAMS
.......................................................................................................
3-51
1. SMPS P.C.BOARD ............................................................................................................................... 3-51
2. MAIN P.C.BOARD ................................................................................................................................ 3-53
3. VFD/ TOUCH/ TOP JACK P.C.BOARD ............................................................................................... 3-57
Содержание CM2630B
Страница 19: ...2 8 A60L A60R 4 SPEAKER SECTION ...
Страница 37: ...3 18 Figure 3 3 IC602 Pin22 23 24 Figure 3 4 AUDIO_L R BCK AUDIO_L AUDIO_R LRCK DATA 16 17 18 16 17 18 ...
Страница 39: ...3 20 5 USB Figure 5 1 USB D D IC501 Pin117 118 D D 26 25 25 26 ...
Страница 40: ...3 21 6 CRYSTAL Figure 6 1 12 MHZ CRYSTAL IC101 Pin57 58 XI XO 27 28 27 28 ...
Страница 41: ...3 22 MEMO ...
Страница 57: ...3 53 3 54 2 MAIN P C BOARD TOP VIEW ...
Страница 58: ...3 55 3 56 MAIN P C BOARD BOTTOM VIEW ...
Страница 59: ...3 57 3 58 3 VFD TOUCH TOP JACK P C BOARD TOP VIEW ...
Страница 60: ...3 59 3 60 VFD TOUCH TOP JACK P C BOARD BOTTOM VIEW ...
Страница 61: ...3 61 3 62 MEMO MEMO ...