Akai ACR-127MMC Service Manual
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Akai ACR-127MMC Service Manual

Akai ACR-127MMC Service Manual

Cd/mp3–reciver
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CD/MP3–RECIVER
Model:
ACR127MMC
SERVICE MANUAL
www.akai.ru

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Summary of Contents for Akai ACR-127MMC

  • Page 1 CD/MP3–RECIVER Model: ACR127MMC SERVICE MANUAL www.akai.ru...

  • Page 2: Table Of Contents

    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 View Parts Lists (Panel) ........................19 Exploded Views (Cabinet) ........................... 20 Exploded View Parts Lists (Cabinet) ........................

  • Page 3: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS 1. Using the unlock key that 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.

  • Page 4: Disassembly Diagram

    DISASSEMBLY DIAGRAM...

  • Page 5: Operation Check

    OPERATION CHECK GENERAL SPECIFICATIONS OF SIGNAL Standard frequency 98.1 MHz (87.5, 108 MHz) 1000 kHz (522, 1620 kHz) 200 kHz (144, 288 kHz) Signal output 5 mV 5 mV Modulation 400 Hz 30% MOD. FM Stereo 1 kHz 75kHz DEV. 46% for L only or R only pilot level 8% AF output level...

  • Page 6: Block Diagram

    BLOCK DIAGRAM...

  • Page 7: Alignment Locations

    ALIGNMENT LOCATIONS FM TUNER BOARD...

  • Page 8: Alignment Procedures

    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. Signal generator output must be kept as low as possible to avoid overload and clipping.

  • Page 9: Printed Circuit Boards

    PRINTED CIRCUIT BOARDS MAIN BOARD TOP VIEW...
  • Page 10 MAIN BOARD BOTTOM VIEW...
  • Page 11 KEY BOARD TOP VIEW...
  • Page 12 KEY BOARD BOTTOM VIEW...
  • Page 13 CD SERVO BOARD TOP VIEW...
  • Page 14 CD SERVO BOARD BOTTOM VIEW...
  • Page 15 FRONT/EJ BOARD TOP VIEW...
  • Page 16 FRONT/EJ BOARD BOTTOM VIEW...
  • Page 17 SD CARD PCB BOARD...

  • Page 18: Exploded Views (Panel)

    EXPLODED VIEW PANEL...

  • Page 19: Exploded View Parts Lists (Panel)

    EXPLODED VIEW PARTS LIST PANEL Ref. No. Description RS Part No. Mfr’s Part No. Lens; (OPC0000) LCD X59.16 N/IR/SW 53-J2122-333 Panel –F (OP2001/White) LCD X60.16 “USB” 51-J2121-31A Panel Bottom (F) 51-J2137-00 VOL Knob (E. Silver) 52-J2130-90E Round Decoration (E-Silver) 52-J2131-90E Open Key (L-Up) (OP0000) 52-J2147-30 RE Knob Spring...

  • Page 20: Exploded Views (Cabinet)

    EXPLODED VIEW CABINET...

  • Page 21: Exploded View Parts Lists (Cabinet)

    EXPLODED VIEW PARTS LIST CABINET Ref. No. Description RS Part No. Mfr’s Part No. Panel Ring (S. OP2001) 51-G2121-30G Base (F) (MMS+SD) 51-E2126-00 61-E2005-04 Side Bracket (CD200/Wire) CD MECH. CDM-1684EUK W/O 146A NO BP 94-01684-12 Heat Sink (For Wire) 61-E2006-00 Top Cabinet 61-B0105-01 Bottom Cabinet (For Wire)
  • Page 22 Ref. No. Description RS Part No. Mfr’s Part No. Hexagon Nut M5 35-40005-00 Screw Ø2X3 CH/MA Black 40-12003-09H Screw Ø2X4 BH/MS Black 40-12004-21 Screw Ø2X6 PA/ST Black 40-12006-20 Screw Ø2.6X4 BH/MS 40-02604-01 Screw Ø2.6X5 BH/TAPTITE 40-02605-03 Screw Ø2.6X6 PH/MS 40-02606-00 Screw Ø2.6X6 BH/MS 40-02606-01 Screw Ø2.6X6 PH/MS Black...

  • Page 23: Exploded Views (Deck)

    EXPLODED VIEW (DECK)

  • Page 24: Exploded View Parts Lists (Deck)

    EXPLODED VIEW PARTS LIST (DECK) Ref. No. Description Parts No. Q’ty SENSOR ST-23G SENSOR PCB SCREW CA/H 0” TT 2*3 COVER-UPPER SECC T1.0 LEVER DISC POM (F20-03) GUIDE UP POM (F20-03) BUSHING ROLLER POM (F20-03) ROLLER DISC SLICON SHAFT ROLLER SUS 303 PIN ROLLER SUM24L-NI (PLATE)
  • Page 25 EXPLODED VIEW PARTS LIST - CONTINUED (DECK) Ref. No. Description Parts No. Q’ty CLAMP DISC POM (F20-03) HOLD CLAMPER SECC T1.0 S/P CLAMPER SUS304WPB TURN TABLE ABS G/F 20% BASE PU POM (F20-03) PIN SIDE (A) SUM24L-NI (PLATE) SCREW CA/H 0” M/S 1.7*2.5 PIN SIDE (B) SUM24L-NI(PLATE) DAMPER...

  • Page 26: Schematic Diagram

    SCHEMATIC DIAGRAM (MAIN BOARD)
  • Page 27 SCHEMATIC DIAGRAM (KEY BOARD)
  • Page 28 SCHEMATIC DIAGRAM (CD SERVO BOARD) C58 101P NPO 101 NPO OPIN1+ OPIN4+ R100 OPIN1- OPIN4- OPOUT1 OPOUT4 102 NPO OPEN OPIN2+ OPIN3+ OPIN2- OPIN3- OPOUT2 OPOUT3 101 NPO C60 101P NPO R101 PGND PGND 102 NPO OPEN REGO VCCI MUTE VOL- BIAS VOL+...

  • Page 29: Electrical Parts List

    ELECTRICAL PARTS LIST Ref. No. Part No. Description Q’ty PC BOARD ASSY, MAIN BOARD Q801 01-00435-00S TR. BD435 TO-126 FAIRCHLD Q817 01-00435-00S TR. BD436 PNP TO-126 SAMSUNG Q104,802/9 01-00812-00 TR. 2SA812 Q812 01-01240-00 TRANSISTOR B1240 Q105~7,601,801/3~6/8,811/6 01-03875-07 TRANSISTOR 2SC3875G IC802 01-07805-00 IC-REGULATOR 78L05 Q807...
  • Page 30 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty C702 06-10227-01 E. CAP 220µF 10V (Ø6MM MINI) C102,125,608,629,813,D811 TO GND 06-10476-01 E. CAP 47µF 10V (Ø4X7 MINI) C106,809,812 06-16106-01 E. CAP 10µF 16V Ø4X7MM C837 06-16107-01 E. CAP 100µF 16V (Ø6.3X7MM) C618,819 06-16226-01 E.
  • Page 31 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty R121,615,633/4 07-63222-00 CHIP RES. 2.2kΩ ±5% 0603 SMT R319,702/3,805~8,813,858 07-63223-00 CHIP RES. 22kΩ ±5% 0603 SMT R318,614,626,649 07-63224-00 CHIP RES. 220kΩ ±5% 0603 SMT R704/9,710/5 07-63273-00 CHIP RES. 27kΩ ±5% 0603 SMT R108 07-63331-00 CHIP RES.
  • Page 32 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty PC BOARD ASSY, KEY BOARD ZD601 02-00062-07 E.S.D. DIODE NNCD6.2G (5PIN) 02-A1560-09 LED B.LIGHT QB02002-09 23.5X99 WHT DLP1~8 02-30553-60T P. LAMP AA 3V 60MA Ø3X5.5 K.T. ZD602/3 02-50051-00A ZENER DIODE 5.1V 0.5W AT. ±2% IC601 03-75823-00 IC LC75823ED...
  • Page 33 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty 02-50036-00 ZENER DIODE 3.6V ±5% 0.5W D2~7 02-50062-54 ZENER DIODE SMD 6.2V (LLDS) 1206 ZD301 02-50091-00A ZENER DIODE 9.1V ±5% 0.5W AT. 03-00760-00 USB+MMC (SD) DSP TCC760 TQFP-128 TELECHIPS 03-01642-00 VOLTAGE LDO REGULATOR IC IP1642L INTERPION 03-05341-00...
  • Page 34 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty R26/7 07-63015-00 CHIP RES 1.5Ω 0603 SMT R42/3 07-63030-00 CHIP RES 3.0Ω ±5% 0603 SMT 07-63051-00 CHIP RES 5.1Ω ±5% 0603 SMT R39,93/4 07-63100-00 CHIP RES 10Ω ±5% 0603 SMT R125~7 07-63101-00 CHIP RES 100Ω...
  • Page 35 ELECTRICAL PARTS LIST - CONTINUED Ref. No. Part No. Description Q’ty 11-20081-348 CD2008 (SD+MMC CARD) BOARD 45X35 12-05802-130 PCB USB SB D/S 110X101X1.2MM 64MB SDRAM 16-00033-01 MICRO SWITCH MPU10371MLBO (MIC) PC BOARD ASSY, LINE OUT SECTION C707/8 06-50105-03 E. CAP 1µF 50V (Ø4X5MM) R721/2 07-63102-00 CHIP RES 1kΩ...

  • Page 36: Specifications

    SPECIFICATIONS T. H. D............................Less than 0.35% Signal to Noise Radio ........................More than 60 dB Channel Separation ........................More than 60 dB Frequency Response .......................... 20Hz-20kHz Stereo Separating (FM) ........................30 dB (at 1kHz) Signal to Noise Ratio (FM) ......................Better than 50 dB Output Power.............................

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