Akai ACR-48MP Service Manual
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Akai ACR-48MP Service Manual

Cd/mp3/usb/rds–reciver
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CD/MP3/USB/RDS–RECIVER
Models:
ACR 48MP
SERVICE MANUAL
www.akai.ru

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Summary of Contents for Akai ACR-48MP

  • Page 1 CD/MP3/USB/RDS–RECIVER Models: ACR 48MP 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)............................15 Exploded View Parts Lists (Panel) ........................16 Exploded Views (Cabinet) ........................... 17 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 (65.0, 74.0MHz) (87.5, 107.9 MHz) 1000 kHz (530, 1710 kHz) Signal output 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 FM/MW...

  • Page 6: Block Diagram

    BLOCK DIAGRAM...

  • Page 7: Alignment Locations

    ALIGNMENT LOCATIONS MITSUMI TUNER...

  • 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: Exploded Views (Panel)

    EXPLODED VIEW PANEL...

  • Page 16: Exploded View Parts Lists (Panel)

    Key Board 1121-300531-3108 3900-0E2004-00 LCD Bracket Real (E) ROHS CD3001 LCD TN NEG COLOR Black mask 22X84 PIN 2700-300200-110Y ROHS CD1007 B. Light /White ROHS 0200-001007-09 Screw Ø2X8 BA/ST Black ROHS 4000-012008-21 AKAI Logo (S.N0000) Silver Hot Stamp ROHS 5200-0G6240-31...

  • Page 17: Exploded Views (Cabinet)

    EXPLODED VIEW CABINET...

  • Page 18: Exploded View Parts Lists (Cabinet)

    EXPLODED VIEW PARTS LIST CABINET Ref. No. Description RS Part No. Mfr’s Part No. Panel Ring ABS (S. N0000) ROHS 5100-0E2022-30 Base Real (E) /777 ROHS 5100-0E2020-00 6100-0N0201-00 U Bracket (CD200/Wire) ROHS CD MECH. MG205 (205) ROHS 9400-002050-01 Heat Sink (For Wire) ROHS 6100-0N0204-00 Top Cabinet ROHS 6100-0B0105-01...

  • Page 19: Exploded Views (Deck)

    EXPLODED VIEW (DECK)

  • Page 20: 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 21 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 22: Schematic Diagram

    SCHEMATIC DIAGRAM (MAIN BOARD)
  • Page 23 SCHEMATIC DIAGRAM (KEY BOARD)
  • Page 24 SCHEMATIC DIAGRAM (CD SERVO BOARD)

  • Page 25: Electrical Parts List

    ELECTRICAL PARTS LIST Ref. No. Part No. Description Q’ty PC BOARD ASSY, MAIN BOARD IC804 0100-007805-00 IC,78L05 TO-92 ROHS D639,625,630 0200-004148-02 DIODE SMD RLS4148 LL-34 ROHM ROHS IC601 0300-007313-01 IC SC-7313 (SILAN) ROHS IC801 0300-007388-00 IC TDA7388 (4x40W) ST "Y" ROHS IC602 0300-0F8847-151 CPU RF8847-151 MP3+WMA+TC+RUSSION...
  • Page 26 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty C603,C604,C140 0500-063102-01 CER.CAP SMD 1000PF 50V ±10% X7R 0603 ROHS C207 0500-063103-01 CER.CAP SMD 0.01uF 50V ±10% X7R 0603 ROHS C110,C111,C607,C811,C833,C 0500-063104-01 CER.CAP SMD 0.1uF 50V ±10% X7R 0603 819,C663,C664,C630,C600,C83 ROHS 9,C837,C818,C108,C123 C119,C124 0500-063220-00...
  • Page 27 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty R830 0700-063182-00 RES SMD 1.8KΩ ±5% 1/10W 0603 ROHS R645,R646,R001 0700-063220-00 RES SMD 22Ω ±5% 1/10W 0603 ROHS R636 0700-063221-00 RES SMD 220Ω ±5% 1/10W 0603 ROHS R615,R633,R634,R121,R142,R 0700-063222-00 RES SMD 2.2KΩ ±5% 1/10W 0603 ROHS 872,R681,R682,R329,R330,R32 R702,R703,R705~808,R829,R8 0700-063223-00...
  • Page 28 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty C201~3 0500-063223-01 CER.CAP SMD 0.022uF 50V ±10% X7R 0603 ROHS R209 0700-063100-00 RES SMD 10Ω ±5% 1/10W 0603 ROHS R208 0700-063102-00 RES SMD 1KΩ ±5% 1/10W 0603 ROHS R201 0700-063103-00 RES SMD 10KΩ ±5% 1/10W 0603 ROHS R202 0700-063331-00 RES SMD 330Ω...
  • Page 29 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty SW RES 1600-001107-02S TACT SW KPT-1107CD 4.3 2P IN RED PC BOARD ASSY, SDK/CD SERVO BOARD R303,304 0700-063332-00 RES SMD 3.3KΩ ±5% 1/10W 0603 ROHS DECK TO MB 2500-009286-18 FFC WIRE(UNILATERAL PLUG)130MM 18PIN P=1.25MM ROHS DECK TO MB 2500-011101-18...
  • Page 30 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty 0500-063473-01 CER.CAP SMD 0.047uF 50V ±10% X7R 0603 ROHS 0500-063474-01 CER.CAP SMD 0.47uF 25V +80/-20% Y5V 0603 ROHS 0500-063683-01 CER.CAP SMD 0.068uF 50V ±10% X7R 0603 ROHS EC1~5,7~9,16,11,17,EC6 0600-016106-54 E.CAP SMD 10uF ±10% 16V ∮4×5.5MM ROHS EC13,15 0600-016107-54...
  • Page 31 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty 2500-053015-20E SOCKET 4PIN CD DECK BoMu ROHS PC BOARD ASSY, MAIN BOARD LINE OUT SECTION C707,708 0600-050105-03 E.CAP 1uF 50V ±20% ∮4×5MM ROHS R721,722 0700-063102-00 RES SMD 1KΩ ±5% 1/10W 0603 ROHS 2000-020360-08 RCA CABLE WIRE 360MM GREY ROHS...

  • Page 32: 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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