Akai-ACR-48-MP-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL Models: ACR-48MP CD/MP3/USB/RDSRECIVER www.akai.ru RadioFans.CN 收音机爱 好者资料库 2 CONTENTS Page Disassembly Instructions.3 Disassembly Diagram.4 Operation Check.5 Block Diagram .6 Alignment Locations .7 Alignment Procedures .8 Printed Circuit Boards.9 Exploded Views (Panel).15 Exploded Vie

2、w Parts Lists (Panel) .16 Exploded Views (Cabinet) .17 Exploded View Parts Lists (Cabinet).18 Exploded Views (Deck).19 Exploded View Parts Lists (Deck) .20 Schematic Diagram .22 Electrical Parts List .25 Specifications.32 RadioFans.CN 收音机爱 好者资料库 3 DISASSEMBLY INSTRUCTIONS 1. Using the unlock key tha

3、t came with the unit or a similar tool, unlock the Mounting Box and remove toward the rear of the unit. 2. Remove two screws (A) located on the rear of the top cabinet then remove the Top Cabinet. 3. Remove two screws (B) located on the rear of the bottom cabinet then remove the Bottom Cabinet. 4. T

4、ake out the Front Panel and the Ring. Remove two screws (C) from on the front side of the Base. 5. Remove two screws (D) from on the right side of the U bracket. Remove two screws (E) from on the left side of the U bracket. 6. Remove two screws (F) from under the deck front bracket then remove the D

5、eck Front Bracket. Remove two screws (G) from under the deck rear bracket then remove the Deck Rear Bracket. 7. Remove two screws (H) from on the left side of the heat sink then remove the Spring Sheet. 8. Remove five screws (I) from on the left side of the heat sink then remove the Heat Sink. 9. Re

6、move the screw (J) from on the back of the U bracket and remove two screws (K) from on the main board then remove the Heat Sink (7809/DB435). 10. Remove two screws (L) from on the back of the U bracket then remove Wire Clip. 11. Remove two screws (M) from each side of the base then remove the Base.

7、12. Remove three screws (N) from under the main board then remove the U Bracket and the Main Board. RadioFans.CN 收音机爱 好者资料库 4 DISASSEMBLY DIAGRAM 5 OPERATION CHECK GENERAL SPECIFICATIONS OF SIGNAL Standard frequency Signal output Modulation FM MW FM MW MW FM Stereo 98.1 MHz (65.0, 74.0MHz) (87.5, 10

8、7.9 MHz) 1000 kHz (530, 1710 kHz) 1mV 5 mV 400 Hz 30% MOD. 1 kHz 75kHz DEV. 46% for L only or R only pilot level 8% AF output level FM/MW Power source voltage DC 14.0V (Backup voltage is the same as this) AF load impedance 4 ohm pure resistance Balance Center position of level Tone Center position T

9、he signal strength read in this section is voltage on the antenna. Test Diagram 4-SPEAKER VTVM DISTORTION METER 2-SPEAKER FRONT SPK. SPK. FL. RL. SPR. MAIN UNIT AM SG VTVM ANTANNA DUMMY FM SG MODULATOR STEREOS MPX ANT FRONT SPK. SPE. FR. RR. 4-SPEAKER SPK. 2-SPEAKER POWER ANTANNA ACC (DV14.4V) GROUN

10、D BACK UP (14.4V) 6 BLOCK DIAGRAM 7 ALIGNMENT LOCATIONS MITSUMI TUNER 8 ALIGNMENT PROCEDURES FM ADJUSTMENT Equipment Required ? ? AM IF/RF signal generator ? ? Solid-state voltmeter (SSVM) ? ? Regulated DC power supply ? ? 2-CH voltmeter ? ? Distortion meter FM Alignment Using FM Signal Generator No

11、te: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible to avoid overload and clipping. Step Generator Coupling Generator Display Setting AdjustmentRemarks Stereo Separation Signal Generator to antenna receptacle 98.1 MHz Int. 1 kHz Dev. 75 kHz L+R =

12、 90 % pilot = 10 % 98.1 MHz VR1 Adjust AF output power at maximum separating more than 30 dB FM SNC Adjustment 98.1 MHz Dev. 75 kHz L+R=90 % Int. 1 kHz 60dBV output 98.1 MHz 40 dB 98.1 MHz VR2 Stereo Separation 25 dB (5 dB) Stop SENS. Signal Generator to antenna receptacle 98.1 MHz Mod. 1kHz Dev 75k

13、Hz 98.1 MHz VR3 Adjust AF to stop station. Note: The tuner module is well-adjust and adjustment is not recommended. 9 PRINTED CIRCUIT BOARDS MAIN BOARD TOP VIEW 10 MAIN BOARD BOTTOM VIEW 11 KEY BOARD TOP VIEW 12 KEY BOARD BOTTOM VIEW 13 CD SERVO BOARD TOP VIEW 14 CD SERVO BOARD BOTTOM VIEW 15 EXPLOD

14、ED VIEW PANEL 16 EXPLODED VIEW PARTS LIST PANEL Ref. No. Description RS Part No. Mfrs Part No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Lens; (S.N0000/WHT)X82.25 W/WMA/RDS N/IR ROHS T. Panel (S.0000/WHT) W/O D ROHS Panel Bottom ROHS Release Key (S. N0

15、000) ROHS Release Spring ROHS Power Key (L-Up) (S.N0000) ROHS PWR Knob Adaptor ROHS Decorate Ring (S.N1202) ROHS +/- Key (L-Up) (S.N1202)ROHS SEL Key (L-Up) (S.N1202)ROHS Eject R Key (L-Up) (S.N0000) ROHS EJ Knob Adaptor ROHS BND Key (L-Up) (S.N0000) ROHS BND Knob Adaptor ROHS Eject/LOU/ENT (S.N0000

16、/WHT) ROHS MUT/LOC/MON Key (L-Up) (S. N0000) ROHS MUT Knob Back Light ROHS 1PAU/3RPT/5 Key (L-Up) (S. N0000) ROHS 2SCN/4SHF/6 Key (L-Up) (S. N0000) ROHS PAU Knob Back Light ROHS 8TUNE SKIP Key (L-Up) (S. N0000) ROHS 9TUNE SKIP/DISP/EQ Key (L-Up) (S. N0000) ROHS EQ Knob Back Light ROHS MOD Key (Cryst

17、al/Blue PMS285C) ROHS AMS Key (Crystal/Blue PMS285C) ROHS MOD Knob Adaptor ROHS MOD Knob Back Light ROHS Key Board LCD Bracket Real (E) ROHS CD3001 LCD TN NEG COLOR Black mask 22X84 PIN ROHS CD1007 B. Light /White ROHS Screw 2X8 BA/ST Black ROHS AKAI Logo (S.N0000) Silver Hot Stamp ROHS 5300-0C2520-

18、357 5100-0C2520-31W 5100-0C2522-00 5200-0C2535-31W 3600-0C2501-00 5200-0C2522-01 5200-0C2548-00 5200-0C2531-80 5200-0C2523-81 5200-0C2524-81 5200-0C2520-01 5200-0C2546-00 5200-0C2521-01 5200-0C2547-00 5200-0C2533-33W 5200-0C2525-02 5200-0C2539-00 5200-0C2526-02 5200-0C2527-02 5200-0C2540-00 5200-0C2

19、528-01 5200-0C2529-01 5200-0C2542-00 5200-0C2536-71B 5200-0C2537-71B 5200-0C2530-00 5200-0C2541-00 1121-300531-3108 3900-0E2004-00 2700-300200-110Y 0200-001007-09 4000-012008-21 5200-0G6240-31 17 EXPLODED VIEW CABINET 18 EXPLODED VIEW PARTS LIST CABINET Ref. No. Description RS Part No. Mfrs Part No.

20、 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Panel Ring ABS (S. N0000) ROHS Base Real (E) /777 ROHS U Bracket (CD200/Wire) ROHS CD MECH. MG205 (205) ROHS Heat Sink (For Wire) ROHS Top Cabinet ROHS Bottom Cabinet (For Wire) ROHS Main Fiber ROHS Main Bo

21、ard Mounting Box (072) ROHS Shade ROHS CD Windows Sheet ROHS Lock Panel Knob ROHS Spring For EJ Panel CD200 ROHS Hook Knob ROHS Spring For Hook Knob CD200 ROHS Deck Front Bracket (CDN200) ROHS Deck Rear Bracket ROHS FM Cover ROHS M.FAE347/P21/P22 East Furepe 1 Pack 65-108MHJ ROHS Spring Sheet ROHS H

22、eat Sink (7809/DB435) ROHS Wire Clip 1.0MM ROHS Screw 5X18 HH ROHS Spring Washer M5 ROHS Hexagon Nut M5 ROHS Screw 2.6 X 4 BH/MS ROHS Screw 2.6 X 5 BH/TAPTITE ROHS Screw 2.6 X 6 BH/MS ROHS Screw 2.6 X 6 BH/MS Black ROHS Screw 2.6 X 8 BH/MS ROHS Screw 2.6 X 10 BH/MS ROHS Screw M2.6 X 20 PH/MS ROHS 51

23、00-0E2022-30 5100-0E2020-00 6100-0N0201-00 9400-002050-01 6100-0N0204-00 6100-0B0105-01 6100-0B0114-01 3500-0B0101-00 1111-500040-020C 6100-007211-03 8100-069005-03 4300-0A3103-00 5200-0E2041-00 3600-0E2001-00 5200-0E2040-01 3600-0E2002-00 3900-0N0201-00 3900-0B0101-01 3900-0W2001-00 2900-000347-03

24、3900-0E2003-00 3900-0B0118-00 3900-0B1415-00 4000-005018-04 3500-050001-00 3500-040005-00 4000-002604-01 4000-002605-03 4000-002606-01 4000-012606-01 4000-002608-01 4000-002610-01 4000-002620-00 19 EXPLODED VIEW (DECK) 20 EXPLODED VIEW PARTS LIST (DECK) Ref. No. Description Parts No. Qty 1 2 3 4 5 6

25、 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 SENSOR SENSOR PCB SCREW COVER-UPPER LEVER DISC GUIDE UP BUSHING ROLLER ROLLER DISC SHAFT ROLLER PIN ROLLER PVC CAP B/K ROLLER PIN PULLEY PIN IDLE GEAR IDLE GEAR PULLEY BELT PULLEY GEAR ROLLEY LOCKER (L)

26、CAM (L) S/P CAM (L) S/P RACK CAM (R) LOCKER GEAR RACK GEAR LOAD GEAR LOAD (D) GEAR LOAD (B) GEAR LOAD (A) PIN LOAD B/K GEAR MOTOR GEAR WORM SERVO PCB ASSY SPECIAL SCREW S/P RO (L) SUPPORT DAMPER S/P RO CHASSIS MAIN ST-23G FR CA/H 0” TT 2*3 SECC T1.0 POM (F20-03) POM (F20-03) POM (F20-03) SLICON SUS

27、303 SUM24L-NI (PLATE) PVC SECC T1.0 SUM24L-NI (PLATE) SUM24L-NI (PLATE) POM (F20-03) POM (F20-03) CR-WRT POM (F20-03) POM (F20-03) POM (F20-03) SUS304WPB SUS304WPB POM (F20-03) POM (F20-03) POM (F20-03) POM (F20-03) POM (F20-03) POM (F20-03) POM (F20-03) SUM24L-NI (PLATE) SECC T1.0 FF-050SH-11190 PO

28、M (F20-03) GLASS EPOXY 1.2T P/H TTS 2*2 SUS304WPB POM (F20-03) SUS304WPB SEEC T1.0 2 1 12 1 1 1 2 2 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 4 1 1 1 1 4 1 3 1 1 21 EXPLODED VIEW PARTS LIST - CONTINUED (DECK) Ref. No. Description Parts No. Qty 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

29、 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 CLAMP DISC HOLD CLAMPER S/P CLAMPER TURN TABLE BASE PU PIN SIDE (A) SCREW PIN SIDE (B) DAMPER S/P BASE MOTOR GEAR PU (B) GEAR PU (A) SCREW MOTOR HOUSING GEAR SHAFT PU SCREW 4P CONT WIRE SPRING TENSION GEAR PU LEAD SCREW SWITCH SCREW PICK UP FPC WIRE SPRI

30、NG PU FIBER PAPER S/P CAM TRANSIT SCREW INSULATOR COVER SWITCH WASHER PE S/P BASE POM (F20-03) SECC T1.0 SUS304WPB ABS G/F 20% POM (F20-03) SUM24L-NI (PLATE) CA/H 0” M/S 1.7*2.5 SUM24L-NI (PLATE) BUTHYL SUS304WPB RF-400CA-12265 HYTRELL 5526 POM (F20-03) CA/H 0” M/S 2*2 FF-050SH-11190 POM (F20-03) KN

31、N11 (PCD18) R/H (W/W) TTB2*5 1007 #28 SUS304WPB POM (F20-03) BSBM SW-110 B/H TTB1.7*8 MG205 POLY AMIDE SUS T0.2 0.55 4.5*18 PE SW-111 PE SUS304WPB 1 1 1 1 1 2 2 2 1 2 1 1 1 6 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 2 2 22 SCHEMATIC DIAGRAM (MAIN BOARD) 23 SCHEMATIC DIAGRAM (KEY BOARD) 24 SCHEMATIC DIAGR

32、AM (CD SERVO BOARD) 25 ELECTRICAL PARTS LIST Ref. No. Part No. Description Qty PC BOARD ASSY, MAIN BOARD IC804 0100-007805-00 IC,78L05 TO-92 ROHS 1 D639,625,630 0200-004148-02 DIODE SMD RLS4148 LL-34 ROHM ROHS 3 IC601 0300-007313-01 IC SC-7313 (SILAN) ROHS 1 IC801 0300-007388-00 IC TDA7388 (4x40W) S

33、T Y ROHS 1 IC602 0300-0F8847-151 CPU RF8847-151 MP3+WMA+TC+RUSSION FONT 1 R704,709,710,715 0700-063273-00 RES SMD 27K 5% 1/10W 0603 ROHS 4 1111-500040-020 C CD(D)5000YMB9X3.90 RUSSIA) 183X152X1.6MM 1 RESET 1600-000244-00 SWITCH TACT KFC-A06-2WA 7.46.56.6MM XYS ROHS 1 2500-0F2006-17 CONNECTOR FEMALE

34、17PIN P=2.0MM DR-F17-2.0 EASTSUN ROHS 1 ANT 3200-083210-01 ANT SOCKET W/GND 3MM L=210MM ROHS 1 Q810,Q305 0100-000435-00S TR NPN BD435S TO-126 FAIRCHLD ROHS 2 Q802,Q809,Q104,Q302,Q304 0100-000812-00F 2SA812-G(ROHS) 5 Q812 0100-001240-00 TRANSISTOR B1240 ROHS 1 Q105107,Q601,Q801,Q8038 06,Q808,Q811,Q30

35、1,Q303,Q70 1 0100-003875-07F TR NPN KTC3875-GR SOT-23 ROHS 14 I802,IC803 0100-007805-00 IC,78L05 TO-92 ROHS 2 Q807 0100-008550-03 TR PNP SS8550C TO-92-B ROHS 1 D802 0200-004001-00 DIODE IN4001 DO-41 ROHS 1 D803,D805 0200-004148-00A DIODE 1N-4148 DO-35 TAPPING ROHS 2 D601,D806,D632,D808 0200-004148-0

36、2 DIODE SMD RLS4148 LL-34 ROHM ROHS 4 D801 0200-005401-00 DIODE IN5401 DO-27 ROHS 1 ZD302 0200-050033-54 ZENER DIODE SMD 3.3V 0.5W 2% LL-34 ROHS 1 ZD802 0200-050036-02 ZENER DIODE SMD 3.6V 0.5W 2% LL-34 ROHS 1 ZD801 0200-050082-01 ZENER DIODE SMD 8.2V 0.5W LL-34 ROHS 1 ZD301 0200-050091-03 ZENER DIO

37、DE SMD 9.1V 0.5W 2% LL-34 ROHS 1 ZD803 0200-050100-02 ZENER DIODE SMD 10V 0.5W 5% LL-34 ROHS 1 IC701,IC702 0300-004558-26S IC UTC4558 SOP (SILAN) ROHS 2 IC603 0300-007035-00 IC KIA7035AP TO-92 ROHS 1 XT601 0400-000072-01H CRYSTAL OSCILLATOR 7.2MHZ 30PPM HC-49U/S ROHS 1 C805808 0500-003102-10 CER.CAP

38、 SMD 1000PF 50V 10% 0805 Y5P ROHS 4 C122,C610,C116,C117,C611,C 801804 0500-003105-10 CER.CAP SMD 1uF 25V 20% X7R 0805 ROHS 9 C601 0500-003270-05S CER.CAP SMD 27PF 50V 5% NPO 0805 ROHS 1 C602 0500-003330-05S CER.CAP SMD 33PF 50V 5% NPO 0805 ROHS 1 C817 0500-063101-00 CER.CAP SMD 100PF 50V 5% NPO 0603

39、 ROHS 1 IC101 0300-009257-00H IC SC9257 ROHS 1 26 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Qty C603,C604,C140 0500-063102-01 CER.CAP SMD 1000PF 50V 10% X7R 0603 ROHS 3 C207 0500-063103-01 CER.CAP SMD 0.01uF 50V 10% X7R 0603 ROHS 1 C110,C111,C607,C811,C833,C 819,C663,C664,C630,C600,C83 9,C837,C818,C108,C123 0500-063104-01 CER.CAP SMD 0.1uF 50V 10% X7R 0603 ROHS 15 C119,C124 0500-0632