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Akai ACR-57 Service Manual

Pull synthesized stereo radio with compact disc player digital

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PULL SYNTHESIZED STEREO RADIO WITH
COMPACT DISC PLAYER DIGITAL
OPEN
CLK SET
DSP
P-EQ
RESET
COLOR
MONO
LOC
MUTE
ST
LOUD
CDP
DUAL TIME CAR COMPACT PLAYER
1
2
3
4
PAU
SCN
RPT
MINUTE
EJECT
5
6
SHF
CD
CD
POWER
HOUR
IR
DIGITAL TIME
MANU/
SKIP
AMS
AM
PM
LOUD
MODE
BAND

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Summary of Contents for Akai ACR-57

  • Page 1 PULL SYNTHESIZED STEREO RADIO WITH COMPACT DISC PLAYER DIGITAL OPEN POWER CLK SET HOUR DIGITAL TIME MANU/ SKIP LOUD P-EQ RESET MINUTE COLOR DUAL TIME CAR COMPACT PLAYER EJECT LOUD MONO MUTE MODE BAND...
  • 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 Wiring Diagram ..............................15 Exploded Views (Panel)............................. 16 Exploded View Parts Lists (Panel) ........................17 Exploded Views (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 the screw (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 Modulation 400 Hz 30% MOD. FM Stereo 1 kHz 75 kHz DEV. 90% for L only or R only pilot level 10% AF output level FM/MW/LW...
  • Page 6: Block Diagram

    BLOCK DIAGRAM...
  • Page 7: Alignment Locations

    ALIGNMENT LOCATIONS FM/AM 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...
  • 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 LAMP BOARD...
  • Page 15: Wiring Diagram

    WIRING DIAGRAM...