File name A458,B458 SERVICE MANUAL.pdfMP3/USB PLAYER CAR AUDIO
SERVICE MANUAL
A458 PICTURE
B458 PICTURE
AM/FM STEREO RADIO AND MP3/USB PLAYER
CONTENTS
1. SPECIFICATION ... 3
2. DUMMY LOAD ... 5
3. HELPFUL HINTS ... 6
4. REAR VIEW AND CONNECTION ... 8
5. BLOCK DIAGRAM ... 10
6. KEY MATRIX ... 12
7. MAIN P.C.BOARD ... 13
8. MAIN SCHEMATIC DIAGRAM ... 14
9. FRONT P.C.BOARD ... 18
10. FRONT SCHEMATIC DIAGRAM ... 19
11. WIRING CONNECTION ... 21
12. AM/FM TUNER ... 22
13. DECK P.C.BOARD ... 23
14. DECK SCHEMATIC DIAGRAM ... 24
15. ELECTRICAL PARTS LIST ... 25
16. EXPLODED VIEW & MECHANICAL PARTS LIST ... 35
17. DECK EXPLODED VIEW & PARTS LIST ... 36
18.GENERAL INFORMATION ... 38
19. TROUBLE SHOOTING ... 47
1.SPECIFICATION
1. GENERAL SECTION
1 POWER SUPPLY 14.4 DC (10.6V ~ 16V)
2 TONE CONTROL ±10dB at 100 Hz (BASS)
±10dB at 10 KHz (TREBLE)
3 DIMENSIONS (W x H x D) 178 mm(W) × 50 mm(H) × 175 mm(D)
4 MAXIMUM POWER OUTPUT 40W x 4ch
5 CURRENT CONSUMPTION Less than 15A
6 WEIGHT 1.5kg
7 GROUND POLARITY NEGATIVE
8 SPEAKER IMPEDANCE 4
2. AM SECTION
NO DESCRIPTION UNIT NORMAL LIMIT
1 FREQUENCY RANGE KHz 522~1620
2 INTERMEDIATE FREQUENCY KHz 450
3 USABLE SENSITIVITY 603 KHz dBµ 30 35
(AT 20dB S/N) |