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Aiwa FR-A270 Service Manual
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Aiwa FR-A270 Service Manual

Aiwa FR-A270 Service Manual

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FR-A270
U(H),EZ(L,H)
FR-A275
U(H),HRJ(L),K(H)
EZ(H)
SERVICE MANUAL
RADIO RECEIVER
S/M Code No. 09-015-356-7N1

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Summary of Contents for Aiwa FR-A270

  • Page 1 FR-A270 U(H),EZ(L,H) FR-A275 U(H),HRJ(L),K(H) EZ(H) SERVICE MANUAL RADIO RECEIVER S/M Code No. 09-015-356-7N1...
  • Page 2 ACCESSORIES/PACKAGE LIST-1/1 REF. NO PART NO. KANRI DESCRIPTION 1 8B-RUB-905-010 IB,EZ(EGF)C 270<A270 EZLC,A270 EZHC> 1 8B-RUA-905-010 IB,EZ(EGF)C 275<A275 EZHC> 1 8B-RUB-907-010 IB,EZ(PHNCZ)C 270<A270 EZLC,A270 EZHC> 1 8B-RUA-907-010 IB,EZ(PHNCZ)C 275<A275 EZHC> 1 8B-RUB-906-010 IB,EZ(SID)C 270<A270 EZLC,A270 EZHC> 1 8B-RUA-906-010 IB,EZ(SID)C 275<A275 EZHC> 1 8B-RUA-902-010 IB,HR(ECC)C 275<A275 HRJLC>...

  • Page 3: Specifications

    SPECIFICATIONS FRA270U MODEL FRA270EZ MODEL • • Design and specifications are subject to change without Design and specifications are subject to change without notice notice FRA275U MODEL FRA275HRJ MODEL • • Design and specifications are subject to change without Design and specifications are subject to change without notice notice FRA275K, EZ MODEL...
  • Page 4 ELECTRICAL MAIN PARTS LIST-1/2 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 87-010-391-010 CAP,E 10-35 M SM 87-012-348-080 CAP,CER 0.1-50 F 87-A21-200-010 IC LM8562 87-A10-576-080 CAP,CER 0.01-50 Z YF <EXCEPT A270 UHC,A270 EZLC,A270 EZHC> <A270 UHC,A270 EZLC,A270 EZHC> 87-A21-201-010 IC,LM8560N 87-012-348-080...

  • Page 5: Chip Resistor Part Code

    ELECTRICAL MAIN PARTS LIST-2/2 • 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...
  • Page 6 BLOCK DIAGRAM-1/1 FM-ANT ROD-ANT MAIN C.B U2 KA22426D AM FM IF POWER IC FM RF AM/FM AUDIO AM RF IF+DET POWER AMP Q1,Q2 LM8562 (A275 MODEL) LM8560 (A270 MODEL) AM-ANT AUDIO SWITCH DISPLAY CONTROL A275 MODEL HRJLC MODEL SW11 RADIO 110-120V BUZZER CLOCK / DISPLAY...
  • Page 7 WIRING-1/2 (A275 MODEL) BAND MAIN C. B (PARTS SIDE) VOLUME (BLK) (BLK) (RED) SNOOZE DOWN SW8A SW9D SW9A SW8B SW9C SW9B Note ALARM2 ALARM1 12/24H 50/60Hz MODEL STAND SELECT BUZZER RADIO – 50Hz EXCEPT – No Mount HRJLC MODEL ALARM POWER 60Hz –...
  • Page 8 SCHEMATIC DIAGRAM-1/2 (A275 MODEL) ANT1 FM ANT L5,TC1 L2,TC2 L3,TC3 L6,TC4 MAIN C.B AM TRACKING ADJ FM TRACKING ADJ FM FREQUENCY AM FREQUENCY FM IF ADJ RANGEADJ RANGEADJ IFT FM DES 1015GR PVC1 TUN-CAP,20P-160P-82P (UHC MODEL) C7 30P KHC, HRJLC, EHC MODEL TUN-CAP,20P-126P-126P (KHC,HRJLC,EZHC MODEL) 27P UHC MODEL VOLUME...
  • Page 9 WIRING-2/2 (A270 MODEL) BAND MAIN C. B (PARTS SIDE) VOLUME (BLK) (BLK) CLOCK SET (RED) DOWN SNOOZE ALARM SET SLEEP ALARM SW8A SW8B Note STAND BUZZER RADIO 12/24 50/60 SELECT 50Hz – POWER 60Hz – No Mount No Mount – –...
  • Page 10 SCHEMATIC DIAGRAM-2/2 (A270 MODEL) ANT1 FM-ANT L5,TC1 L2,TC2 L3,TC3 L6,TC4 MAIN C.B AM TRACKING ADJ FM TRACKING ADJ FM FREQUENCY AM FREQUENCY FM IF ADJ RANGE ADJ RANGE ADJ 1015GR VOLUME PVC1 TUN-CAP,20P-160P-82P (UHC MODEL) C7 27P (UHC MODEL) VR,RTRY 50K-BF-12NPD TUN-CAP,20P-126P-126P (EZLC,EZHC MODEL) 30P (EZLC,EZHC MODEL) 0.01...
  • Page 11 TRANSISTOR ILLUSTRATION-1/1 E B C 2SC1815GR 1015GR -11-...
  • Page 12 ELECTRICAL ADJUSTMENT-1/2 (A275 MODEL) MAIN C.B (PARTS SIDE) Test point TP3 Input point TP2 Input point TP1 ANT1 C1 < TUNER SECTION > 1. AM IF Adjustment 5. FM Frequency Range Adjustment Settings: • Test point TP3 Settings: • Input point TP1 •...
  • Page 13 ELECTRICAL ADJUSTMENT-2/2 (A270 MODEL) MAIN C.B (PARTS SIDE) Test point TP3 Input point TP2 Input point TP1 < TUNER SECTION > 1. AM IF Adjustment 4. FM IF Adjustment Settings: • Test point TP3 Settings: • Input point TP2 • Adjustment location: T3 •...
  • Page 14 VOLTAGE CHART-1/1 -14-...

  • Page 15: Anode Connection

    FL (LED, DISPLAY 0.9 INCH 12H/24H GREEN) GRID ASSIGNMENT/ANODE CONNECTION-1/1 GRID ASSIGNMENT ANODE CONNECTION -15-...
  • Page 16 IC BLOCK DIAGRAM-1/1 IC, KA22426D FM/AM BAND RIPPLE SELECT FILTER METER IF IN IF IN AM IF AGC TUNING METER AM FE AF POWER AMP FM IF DISCRIMINATOR FM FE FM/AM MUTE DISCRI RF IN RF IN RF IN FE OUT IC, LM8562 50/60 SEL MODE...
  • Page 17 MECHANICAL EXPLODED VIEW-1/1 FR-A275K WIRE,FM ANT BLK SH,SW FR-A275HRJ SH,SW PLATE, POINTER -17-...
  • Page 18 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 1 8B-RUB-006-010 PANEL,FRONT EZ L<FR-A270 EZLC> 15 8B-RUA-101-010 HLDR,BER ANT 1 8B-RUB-005-010 PANEL,FRONT U H 16 8B-RUA-102-010 COVER, POWER CORD <FR-A270 UHC,FR-A270 EZHC> 17 8B-RUA-613-010 SPKR,57 8OHM 0.5W...

  • Page 19: Color Name Table

    COLOR NAME TABLE Basic color symbol Color Basic color symbol Color Basic color symbol Color Black Cream Orange Green Gray Blue Transparent Blue Gold Pink Silver Titan Silver Brown Violet White Transparent White Yellow Transparent Yellow Metallic Blue Light Blue Transparent Green Dark Blue Transparent Orange...
  • Page 20 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 H251941 Printed in Singapore...

This manual is also suitable for:

Fr-a275