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FR-DAW450
U(S)

SERVICE MANUAL

RADIO RECEIVER
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
(S/M Code No. 09-008-349-8T1).
S/M Code No. 09-008-349-8R1

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Summary of Contents for Aiwa FR-DAW450

  • Page 1: Service Manual

    FR-DAW450 U(S) SERVICE MANUAL RADIO RECEIVER This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-008-349-8T1). S/M Code No. 09-008-349-8R1...
  • Page 2: Specifications

    SPECIFICATIONS • Design and specifications are subject to change without notice ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 8A-RU4-901-010 IB,U(3L)C...
  • Page 3: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C409 87-010-380-010 CAP,E 47-16 SME C502 87-012-286-080 CAP, U 0.01-25 8A-RUA-605-010 IC,CXA1619BS C503 87-010-831-080 C-CAP,U,0.1-16F 8A-RU4-609-010 IC,NJM567 C504 87-010-831-080 C-CAP,U,0.1-16F 8A-RU4-610-010 IC,LC72343G CF101 87-A91-162-010 FLTR,PFS450A7 CF102 87-PC4-617-010...
  • Page 4: Transistor Illustration

    • Regarding connectors, they are not stocked as they are not the initial order items. The connectors are available after they are supplied from connector manufacturers upon the order is received. CHIP RESISTOR PART CODE Chip Resistor Part Coding Figure Resistor Code Value of resistor Chip resistor...
  • Page 5 BLOCK DIAGRAM-1 (TUNER) BLOCK DIAGRAM-2 (CPU)
  • Page 6 WIRING-1 (MAIN) MAIN C.B MAIN C.B (INSERTED PARTS) (CHIP PARTS) WH401 SW403 SW402 ALERT TEST ALERT LOCK • ON • ON WH402 • OFF • OFF SW404 SW402 ALARM MODE DIMMER • RADIO IC401 • HIGH • BUZZER • LOW SW405 SUMMER VR101...
  • Page 7 SCHEMATIC DIAGRAM-1 (MAIN) L101 L102 L103 L104 VC101 FM FREQENCY TV FREQENCY FM TRCKING TV TRCKING MW TRCKING MW TRCKING MAIN C.B RANGE ADJ. RANGE ADJ. ADJ. ADJ. ADJ. ADJ. VOLUME KV1460TL VR102 ALERT FREQENCY RANGE ADJ. BAND SW 3.3K ALERT DETECTOR Q109,Q110 Q107,Q108...
  • Page 8 WIRING-2 (LCD) WIRING-3 (KEY) LCD C.B (INSERTED PARTS) KEY C.B (CHIP PARTS) WH403 SW500 WH401 WH402 RESET WH404 SW503 SW504 SW502 RESET RESET RESET SW507 SW513 SW512 SW509 SW511 SW510 STANDBY ON SLEEP BAND DOWN SW506 SW508 SW501 SW505 WEATHER SNOOZE ALERT RESET...
  • Page 9 SCHEMATIC DIAGRAM-2 (LCD/KEY) LCD C.B Q505,Q506 STEP ALM CTL 33/25 2SC4116GR Q510,Q501 VT FILETR KEY C.B Q502,Q503 DC-DC CONVERTER WH401 10 PINS IFT939825 WEATHER ALERT 47/6.3 STANDBY WH402 10 PINS WH403 WH403 2SC4116GR 2SC4116GR NM : NO MOUNT...
  • Page 10 WIRING-4 (CONNECTION DIAGRAM) LCD DISPLAY...
  • Page 11: Electrical Adjustment

    ELECTRICAL ADJUSTMENT...
  • Page 12: Equipment Connection Diagrams

    EQUIPMENT CONNECTION DIAGRAMS...
  • Page 13: Voltage Chart

    VOLTAGE CHART...
  • Page 14: Ic Block Diagram

    IC BLOCK DIAGRAM IC, CXA1619BS IC, NJM567 3.9k PHASE INPUT LOOP DETECTOR PASS FILTER CURRENT TIMING R CONTROLLED TIMING CR OSCILLATOR QUADRATURE OUTPUT PHASE DETECTOR VREF GROUND OUTPUT FILTER...
  • Page 15 IC DESCRIPTION IC, LC72343G Pin No. Pin Name Description Pin No. Pin Name Description ________ XOUT Connections for a 75kHz crystal oscillator element. System reset input. TEST2 IC test pins. These pins must be tied to ground. HCTR Universal counter dedicated input port. —...
  • Page 16 MECHANICAL EXPLODED VIEW 1/1 PLATE, SILICON PLATE, AC P.W.B SH, LCD FELT, LCD P.W.B BAR-ANT P.W.B...
  • Page 17: Mechanical Parts List

    MECHANICAL PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8A-RU4-003-010 PANEL,FRONT U 16 8A-RU3-201-010 HLDR,DIS 2 8A-RU3-013-010 WINDOW,LCD 17 8A-RU3-208-010 HLDR,BAR-ANT 3 8A-RU4-001-010 CABI,FRONT U 18 8A-RU3-209-010 FOOT,RUBBER 4 8A-RU3-008-010 BTN,SUMMER 19 8A-RU3-204-010 PLATE,LCD 5 8A-RU4-004-010 BTN,ALERT...
  • Page 18 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 H251701 Printed in Singapore...

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