Akai-ACR-127-MMC-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL Model: ACR127MMC CD/MP3RECIVER 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) .18 Exploded Vie

2、w Parts Lists (Panel) .19 Exploded Views (Cabinet).20 Exploded View Parts Lists (Cabinet).21 Exploded Views (Deck) .23 Exploded View Parts Lists (Deck) .24 Schematic Diagram .26 Electrical Parts List.29 Specifications.36 RadioFans.CN 收音机爱 好者资料库 3 DISASSEMBLY INSTRUCTIONS 1. Using the unlock key that

3、 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. Ta

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

5、the Deck Front Bracket. Remove two screws (G) from under the deck rear bracket then remove the Deck Rear Bracket and the Deck. 7. Remove the screw (H) from on the right side of the side bracket then remove the IC Bracket. 8. Remove two screws (I) from on the left side of the heat sink then remove th

6、e Spring Sheet. 9. Remove three screws (J) from on the left side of the heat sink then remove the Heat Sink. 10. Remove the screw (K) from on the back of the side bracket and remove two screws (L) from on the main board then remove the Heat Sink (7809/DB435). 10. Remove two screws (M) from on the ba

7、ck of the side bracket then remove Wire Clip. 11. Remove two screws (N) from each side of the base then remove the Base. 12. Remove three screws (O) from under the main board then remove the Side Bracket and the Main Board. 13. Remove two screws (P) from under the main board then remove the two SD P

8、CB Bracket an the SD PCB 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 LW FM MW LW MW FM Stereo 98.1 MHz (87.5, 108 MHz) 1000 kHz (522, 1620 kHz) 200 kHz (144, 288 kHz) 1mV 5 mV 5 mV 400 Hz 30

9、% MOD. 1 kHz 75kHz DEV. 46% for L only or R only pilot level 8% AF output level FM/MW/LW 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 The signal strength read in this section is voltag

10、e 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) GROUND BACK UP (14.4V) 6 BLOCK DIAGRAM 7 ALIGNMENT LOC

11、ATIONS FM TUNER BOARD 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 Note: Press the radio power switch to on the radio

12、. Signal generator output must be kept as low as possible to avoid overload and clipping. Step Generator Coupling Generator Display Setting Adjustment Remarks Stereo Separation Signal Generator to antenna receptacle 98.1 MHz Int. 1 kHz Dev. 75 kHz L+R = 90 % pilot = 10 % 98.1 MHz VR1 Adjust AF outpu

13、t 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 75kHz 98.1 MHz VR3 Adjust AF to stop station. Note

14、: 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 FRONT/EJ BOARD TOP VIEW 16 FRONT/EJ BOARD BOTTOM VIEW

15、 17 SD CARD PCB BOARD 18 EXPLODED VIEW PANEL 19 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 34 35 36 37 38 39 Lens; (OPC0000) LCD X59.16 N/IR/SW Panel F (OP2001/White) LCD X60.

16、16 “USB” Panel Bottom (F) VOL Knob (E. Silver) Round Decoration (E-Silver) Open Key (L-Up) (OP0000) RE Knob Spring Power Knob (L-Up) (OPC0000) RE Slide Spring Decoration 01 (OPC0000) Decoration 02 (OPC0000) Decoration With USB (S. OPC0000) USB Cover (Black) SET Knob (OPC0000) MUT/LOC/MON Key (L-Up)

17、(OPC0000) 1PAU/3RPT/5 Key (L-Up) (OPC0000) 2SCN/4SHF/6 Key (L-Up) (OPC0000) MD Key (Crystal/Purple PMS2572C) Adaptor 01 BND/EQ Key (L-Up) (OPC0000) 0 DSP Key (L-Up) (OPC0000) 8TUNE SKIP/9TUNE SKIP Key (L-Up) (OPC0000) AMS Key (Crystal/Purple PMS2572C) 2175 Adaptor 02 B-Light 01 B-Light 02 B-Light 03

18、 Key Board CD115 ROTATE ENCODER VOL LCD Cover CD-158 TN NGE M. Color PIN TYPE LED B.L. QB02002-09 23.5X99 WHT Axis Post Right Side Block Contact Spring Left Side Block E-Ring 1.5X4X0.4 MM Screw 1.7X4 PH/ST Screw 2X8 BA/ST Black 53-J2122-333 51-J2121-31A 51-J2137-00 52-J2130-90E 52-J2131-90E 52-J2147

19、-30 36-11852-00 52-J2135-01 36-11851-00 52-J2133-30 52-J2136-30 52-J2141-31W 52-J2063-00 52-J2134-30 52-J2124-32A 52-J2125-01 52-J2126-01 52-C2536-51P 52-J2138-00 52-J2129-03 52-J2128-01 52-J2127-01 52-C2537-52P 52-J2140-00 52-J2142-00 52-J2143-00 52-J2145-00 11-21750-318 18-00115-00 39-E2104-01 27-

20、01580-01Y 02-A1560-09 34-24601-00 52-E2128-00 36-78008-00 52-E2129-00 35-00001-00 40-11704-00 40-12008-21 20 EXPLODED VIEW CABINET 21 EXPLODED VIEW PARTS LIST CABINET 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

21、 33 34 35 36 37 38 39 40 Panel Ring (S. OP2001) Base (F) (MMS+SD) Side Bracket (CD200/Wire) CD MECH. CDM-1684EUK W/O 146A NO BP Heat Sink (For Wire) Top Cabinet Bottom Cabinet (For Wire) Main Fiber Main Board Mounting Box (072) Shade CD Windows Sheet Hook Shaft Hook Spring Hook Push Out Spring Panel

22、 Pole Back Light “F” (White) Front Board 20PIN Socket Eject Knob (S. OPC0000) (L-Up) Eject Board Right Bracket Damper Gear Assy /19-24 T/Q Middle Gear (F) Left Bracket Deck Front Bracket Deck Rear Bracket MITSUMI TUNER FAE391-A01 FM Cover IC Bracket (7805) SD PCB Board PCB Bracket (GOODMANS) SD PCB

23、Bracket Spring Sheet Heat Sink (7809/DB435) Wire Clip 1.0MM Screw 5X18 HH Spring Washer M5 51-G2121-30G 51-E2126-00 61-E2005-04 94-01684-12 61-E2006-00 61-B0105-01 61-B0114-01 35-B0101-00 11-20050-089 61-07211-03 81-69005-02 43-A3103-00 34-D2101-00 36-E2101-00 52-E2127-00 36-E2102-00 52-E2126-00 52-

24、J2150-00W 11-21761-348 25-F0217-20A 52-J2149-01 11-21761-348 39-E2101-01 93-12246-01 52-E2130-00 39-E2102-01 39-E2105-00 39-B0101-00 29-00391-01 39-D0507-00 39-B0115-00 11-20081-348 39-B0110-00 39-E2013-00 39-B0102-00 39-B0118-00 39-B1415-00 40-05018-04 35-50001-00 22 Ref. No. Description RS Part No

25、. Mfrs Part No. 41 42 43 44 45 46 47 48 49 50 51 52 Hexagon Nut M5 Screw 2X3 CH/MA Black Screw 2X4 BH/MS Black Screw 2X6 PA/ST Black Screw 2.6X4 BH/MS Screw 2.6X5 BH/TAPTITE Screw 2.6X6 PH/MS Screw 2.6X6 BH/MS Screw 2.6X6 PH/MS Black Screw 2.6X8 BH/MS Screw 2.6X10 BH/MS Screw M2.6X20 PH/MS 35-40005-

26、00 40-12003-09H 40-12004-21 40-12006-20 40-02604-01 40-02605-03 40-02606-00 40-02606-01 40-02606-20 40-02608-01 40-02610-01 40-02620-00 23 EXPLODED VIEW (DECK) 24 EXPLODED VIEW PARTS LIST (DECK) Ref. No. Description Parts No. Qty 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 2

27、7 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) CAM (L) S/P CAM (L) S/P RACK CAM (R) LOCKER GEAR RACK GEAR

28、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 303 SUM24L-NI (PLATE) PVC SECC T1.0 SUM24L-NI (PLATE) SUM24

29、L-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 POM (F20-03) GLASS EPOXY 1.2T P/H TTS 2*2 SUS304WPB POM (F20-

30、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 25 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 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 CLAMP DISC HO

31、LD 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 SPRING PU FIBER PAPER S/P CAM TRANSIT SCREW INSULATOR COVER SWI

32、TCH 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) KNN11 (PCD18) R/H (W/W) TTB2*5 1007 #28 SUS304WPB POM (F20-03)

33、 BSBM SW-110 B/H TTB1.7*8 SF-C99 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 26 SCHEMATIC DIAGRAM (MAIN BOARD) 27 SCHEMATIC DIAGRAM (KEY BOARD) nRESET CDP_nRST MMC_CLK SCLK_BM0 LRCK_BM1 ENC_MCLK DSP_DOUT_BM2 DSP_SCKO DSP_

34、LRCK DSP_DOUT ENC_DAI SD_CKE SD_CLK SD_nCS CDP_nRST NOR_nCE TDO nTRST TCK TMS TDI CDP_nRST MMC_CS NOR_nCE nWE nOE SD_CKE SD_CLK nWE SD_nCS MMC_DO MMC_CLK MMC_DI MMC_CS MMC_CD CDP_A0 CDP_nSTB DSP_LRCK DSP_SCKO DSP_DOUT FEEDF FEEDR CDP_ADSW CDP_SI CDP_SCK CDP_SO CDP_INTQ SCLK_BM0 LRCK_BM1 ENC_MCLK nWE

35、 nOE SLED_ORG LOAD_START nRESET SCLK_BM0 LRCK_BM1 DSP_DOUT_BM2 ENC_DAI MMC_DO MMC_DI nRESET USB_DETECT TXD_R TXD SENS_O CDP_A0 CDP_nSTB FEEDF CDP_SO CDP_SI CDP_SCK TXD_R TXD RXD RXD nRESET DECK_OPTION CDP_INTQ MMC_CD SLED_ORG USB_DETECT FEEDR SCLK_BM0 LRCK_BM1 SENS_O CD_CE LOAD_START CD_CE RFOK RFOK

36、 SENS_IN LDEND_CHK EJEND EJEND CD_LOCK LDEND_CHK CD_LOCK DSP_DOUT_BM2 SVCC VREF SVCC SVCC SVCC SVCC SVCC SVCC VCC SVCC VREF SVCC SVCC VCC AVCC VCCAVCC AVCC VCC VCC 8V VREF 8V 3V8V 8VSVCC3VVCC 8V SVCC USB_5V 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD 760_VDD XVCC

37、760_VDD 760_VDD760_CORE 760_CORE USB_5V USB_5V 760_VDD 760_CORE 760_VDD 760_VDD 760_VDD 3V 760_VDD XVCC 760_VDD USB_5V 760_VDD 760_VDD 760_VDD SVCC SVCC 760_VDD 760_VDD R49OPEN U7 IP1642L 1 2 3 4 5 6 7 8 9 VIN NC NC RST VO1 VO2 Td PGND1 PGND2 C32 104 R8 10K C53 104 ZD26.2V C49 104 U2 UPD63712 1 2 3

38、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 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 LD PD PN AVDD

39、DGND RFOK INTQ RST A0 STB SCK SD SI DVCC DAVDD ROUT DAGND REGC DAGND LOUT DAVDD XVDD XTAL1 XTAL2 XGND DVDD CID1/FZD CID2/TZD C2D1/RMUTE C2D2/LMUTE C2D3/SHOKD/SBSY LOCK/FR WFCK/MIRR RFCK/HOLD PLCK C16M DGND TX EMPHRAMOVER FLAG DVDD LIMIT XTALEN DGND DIN DOUT SCKIN SCKO LRCKIN LRCK DVDD FD+ FD- TD+ TD- SD+ SD- MD+ MD- DGND TESTEN TEST4 TEST3 TES