Akai ACR-224MMU Service Manual
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Akai ACR-224MMU Service Manual

Cd/mp3/wma/usb/mmc/sd-receiver
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Summary of Contents for Akai ACR-224MMU

  • Page 2 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 3: Disassembly Diagram

    DISASSEMBLY DIAGRAM...

  • Page 4: Operation Check

    OPERATION CHECK GENERAL SPECIFICATIONS OF SIGNAL Standard frequency 98.1 MHz (65.0, 74.0MHz) (87.5, 108.0 MHz) 1000 kHz (522, 1620 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 5: Block Diagram

    BLOCK DIAGRAM...

  • Page 6: Alignment Locations

    ALIGNMENT LOCATIONS MITSUMI BOARD...

  • Page 7: 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 8: Main Board

    PRINTED CIRCUIT BOARDS MAIN BOARD TOP VIEW...
  • Page 9 MAIN BOARD BOTTOM VIEW...
  • Page 10 KEY BOARD TOP VIEW...
  • Page 11 KEY BOARD BOTTOM VIEW...
  • Page 12 CD SERVO BOARD TOP VIEW...
  • Page 13 CD SERVO BOARD BOTTOM VIEW...

  • Page 14: Front Board

    FRONT BOARD TOP VIEW...
  • Page 15 FRONT BOARD BOTTOM VIEW...
  • Page 16 BT BOARD TOP VIEW...
  • Page 17 BT BOARD BOTTOM VIEW...
  • Page 18 TC ISO BOARD TOP VIEW...
  • Page 19 TC ISO BOARD BOTTOM VIEW...

  • Page 20: Exploded View

    EXPLODED VIEW PANEL...

  • Page 21: Exploded View Parts List

    EXPLODED VIEW PARTS LIST PANEL Ref. No. Description RS Part No. Mfr’s Part No. LENS(S.N0000/PMS422C)XN5.16W/RDS N/IR ROHS 5300-506020-33Y TOP PANEL(S.N0000+N1204/PMS422C+PMS426C)ROHS 5100-506020-31Y BOTTOM FOR BTSO60 ROHS 5100-506021-000 MODE/PAIR KB(S.N1204)ROHS 5200-506026-810 POWER/MUTE KB (S.N1204)ROHS 5200-506027-810 1 PAU KB(S.N0000)ROHS 5200-506028-310 2SCN KB(S.N0000)ROHS 5200-506029-310 3RPT KB(S.N0000)ROHS 5200-506030-310 4SHF KB(S.N0000)ROHS...
  • Page 22 EXPLODED VIEW CABINET...
  • Page 23 EXPLODED VIEW PARTS LIST CABINET Ref. No Description RS Part No. Mfr’s Part No. Panel Ring (S.N02001) ROHS 5100-0G2121-30G Base (F) (MMS+SD) ROHS 5100-0E2126-00 Rear-right Cabinet W/Spring For CD-ISO ROHS 6100-300006-002 Deck CDM-1624EUK(SF-CP2)CHUDONG (R01-3A) ROHS 9400-001684-13C Left Cabinet-heat Sink W/Spring ROHS 6100-300004-003 Top Cabinet ROHS 6100-300001-000...
  • Page 24 Ref. No Description RS Part No. Mfr’s Part No. Connector ISO Female 36Pin P=1.5MM ROHS 2500-012245-36 BT Board 1121-506030-1400 Screw Ø2X6 PA/ST (Black) ROHS 4000-012006-20 Camera Screw M2X3 P/H (Black) ROHS 4000-012003-09H Screw Ø2.6X4 BH/MS ROHS 4000-002604-01 Screw Ø2.6X5 BH/TAPTITE ROHS 4000-002605-03 Screw M2.6X20 PH/MS ROHS 4000-002606-00...

  • Page 25: Exploded View (Deck)

    EXPLODED VIEW (DECK)

  • Page 26: Exploded View Parts List (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 27 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 28: Schematic Diagram (Main Board)

    SCHEMATIC DIAGRAM (MAIN BOARD)

  • Page 29: Schematic Diagram - Key Board

    SCHEMATIC DIAGRAM (KEY BOARD)
  • Page 30 SCHEMATIC DIAGRAM (CD SERVO BOARD)

  • Page 31: Electrical Parts List

    ELECTRICAL PARTS LIST Ref. No. Part No. Description Q’ty PC BOARD ASSY, MAIN BOARD Q610 0100-000812-00 TR PNP 2SA812 SOT-23 KEC ROHS Q608 0100-001132-00 TR PNP 2SB1132Q SOT-89 ROHM ROHS Q605,609 0100-003875-07 TR NPN 2SC3875G SOT-23 NEC ROHS D609,610 0200-004148-02 DIODE SMD RLS4148 LL-34 ROHM ROHS C650~652 0500-063104-01...
  • Page 32 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty Q607,703,801,803~806,808 0100-003875-07 TR NPN 2SC3875G SOT-23 NEC ROHS ,816,818,820,107,201,202,2 03,330 D802 0200-004001-01 DIODE SMD IN-4001 SOD-106 TAPPING ROHS D804,807,811 0200-004148-02 DIODE SMD RLS4148 LL-34 ROHM ROHS ZD802 0200-050036-02 ZENER DIODE SMD 3.6V 0.5W ±2% LL-34 ROHS ZD603 0200-050056-01 ZENER DIODE SMD 5.6V 0.5W ±2% LL-34 ROHS...
  • Page 33 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty C702,606 0600-016227-54 E.CAP CHIP 220u/16V +/-10% 6.3X7.6 ROHS C813,845,102,125 0600-016476-54 E.CAP SMD 47uF 16V ±10% 5×5.5MM ROHS C711 0600-035336-54 E.CAP SMD 33uF 35V ±10% 6.3×5.5MM ROHS R888,889 0700-005102-54 RES SMD 1K ±5% 1/10W 0805 ROHS R17,18 0700-005221-54 RES SMD 220 ±5% 1/10W 0805 ROHS...
  • Page 34 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty XT602 0400-000327-00 CRYSTAL 32.768KHZ +/-20PPM ZDT-38( 3X8MM) 12.5PF SW-0227 ROHS C810 0600-016338-00 E.CAP 3300uF 16V ±20% 13×25MM ROHS L801 1500-027012-11 TOROIDAL COIL XC-169-110uH V-TYPE 27×12MM Xin- DeXing ROHS RESET-SW 1600-001138-00 TACT SWITCH FOR DVD248 RESET ROHS PC BOARD ASSY, MAIN BOARD AM TUNER SECTION Q205 0100-003875-07...
  • Page 35 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty R5,12,610 0700-063561-00 RES SMD 560 ±5% 1/10W 0603 ROHS R8,625 0700-063562-00 RES SMD 5.6K ±5% 1/10W 0603 ROHS R6,13,613 0700-063821-00 RES SMD 820 ±5% 1/10W 0603 ROHS 0900-070100-54 CHIP WIREING 10uF SMD 1210 ROHS 1121-506030-30 PCB D/S BT-CD5060 DOT LCD 132×40 KB 1.2×41.2×158.7MM...
  • Page 36 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty 0300-039010-00 IC W39F010P-70B (PLCC-32PIN) ROHS C1,2,76,175 0500-016106-10 TAN CAP SMD 10uF 16V ±10% 3.2×1.6×1.6MM ROHS 0500-016475-10 TAN CAP SMD 4.7uF 16V ±10% 3.2×1.6×1.6MM ROHS C11,20,68 0500-063102-01 CER.CAP SMD 1000PF 50V ±10% X7R 0603 ROHS C3,9,10,13,14,15,23,24,27,3 0500-063104-01...
  • Page 37 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty R9,14 0700-063332-00 RES SMD 3.3K ±5% 1/10W 0603 ROHS R324 0700-063391-00 RES SMD 390 ±5% 1/10W 0603 ROHS R322,37 0700-063471-00 RES SMD 470 ±5% 1/10W 0603 ROHS R46,48 0700-063472-00 RES SMD 4.7K ±5% 1/10W 0603 ROHS R4,23 0700-063473-00 RES SMD 47K ±5% 1/10W 0603 ROHS...
  • Page 38 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty FB/EJ BOARD 1121-506030-36 PCB D/S BT-CD5060 FB/EJ 99.9X27.6X1.2MM EJECT 1600-001140-04 SWITCH TACT SMD KPS-1107SW 6.1×3.7×2.5MM TAPPING ROHS CON2 2500-506023-01 FFC 23PIN P=1.0MM L=60MM ROHS LED2 0200-030000-12 LED RED LUM=0.6MCD WL=690NM WIDE ANGLE ROHS DTHSW 1600-051377-00 SWITCH PUSH SPPB51377A(DS-20)
  • Page 39 ELECTRICAL PARTS LIST-CONTINUED Ref. No. Part No. Description Q’ty 0500-063150-00 CHIP CAP 15PF NPO 0603 SMT ROHS C9-12 0500-063473-01 CER.CAP SMD 0.047uF 50V ±10% X7R 0603 ROHS 0600-063107-55 TAN CAP SMD 100uF 6.3V ±20% 3.5×2.8×2.0MM ROHS 0700-005000-51 CHIP RES ON 1/8W 1206 +/-5% ROHS R38,42 0700-063000-00 RES SMD 0 ±5% 1/10W 0603 ROHS ROHS...

  • Page 40: 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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