Denon DRA-395 Service Manual
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Denon DRA-395 Service Manual

Denon DRA-395 Service Manual

Hi-fi am-fm stereo receiver
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See also: Service Manual
MODEL
AM-FM STEREO RECEIVER
SAFETY PRECAUTIONS ............................................ 2
SPECIFICATIONS ....................................................... 2
DISASSEMBLY ........................................................... 3
ADJUSTMENT .......................................................... 4,5
BLOCK DIAGRAM ....................................................... 6
LEVEL DIAGRAM ........................................................ 7
SEMICONDUCTORS ............................................ 8~12
PRINTED WIRING BOARDS .............................. 13~17
NOTE FOR PARTS LIST ........................................... 18
PARTS LIST OF P.W.B. UNIT ASS'Y ................. 19~24
EXPLODED VIEW ..................................................... 25
PARTS LIST OF EXPLODED VIEW ......................... 26
PACKING VIEW ........................................................ 27
Some illustrations using in this service manual are slightly different from the actual set.
14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011 JAPAN
SERVICE MANUAL
DRA-395

- TABLE OF CONTENTS -

WIRING DIAGRAM .................................................... 28
SCHEMATIC DIAGRAMS ................................... 29~34
Telephone: 03 (3584) 8111
For U.S.A. & Canada model
Hi-Fi AM-FM Stereo Receiver
(1/6)
INPUT UNIT ........................................................... 29
(2/6)
VOLUME UNIT ....................................................... 30
(3/6)
MAIN UNIT ............................................................. 31
(4/6)
VIDEO UNIT ........................................................... 32
CONNECTOR UNIT ............................................... 32
(5/6)
FRONT UNIT .......................................................... 33
SWITCH UNIT ........................................................ 33
POWER SW/HP UNIT ............................................ 33
(6/6)
TUNER UNIT .......................................................... 34
X0118 842 NC 0108

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Summary of Contents for Denon DRA-395

  • Page 1: Table Of Contents

    For U.S.A. & Canada model Hi-Fi AM-FM Stereo Receiver SERVICE MANUAL DRA-395 MODEL AM-FM STEREO RECEIVER — TABLE OF CONTENTS — SAFETY PRECAUTIONS ..........2 PARTS LIST OF PACKING & ACCESSORIES ..27 SPECIFICATIONS ............2 WIRING DIAGRAM ............ 28 DISASSEMBLY ............

  • Page 2: Safety Precautions

    DRA-395 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check.

  • Page 3: Disassembly

    DRA-395 DISASSEMBLY (Follow the procedure below in reverse order when reassembling) Top Cover Remove 6 screws and 3 screws , detach the Top Cover Top Cover in the arrow direction. Front Panel 1. Remove 4 screws and 2 screws 2. Detach the Front Panel in the arrow direction.

  • Page 4: Adjustment

    DRA-395 ADJUSTMENT Tuner Section CONNECTION DIAGRAM OF MEASURING INSTRUMENTS T402 T403 STEREO R471 MODULATOR IC402 75ohm FM SSG VR402 Digital Voltmeter TUNER B'D FM ALIGNMENT Input Output Adjustment Tuning Alignment Step Frequency Input Item Type Frequency Modulation Coupling Type Connect to...
  • Page 5 DRA-395 Audio Section Idling Current Required measurement equipment : DC Voltmeter Preparation (1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture 15 °C ~ 30 °C (59 °F ~ 86 °F).

  • Page 6: Block Diagram

    DRA-395 BLOCK DIAGRAM...

  • Page 7: Level Diagram

    DRA-395 LEVEL DIAGRAM INPUT POWER AMP MAIN VOL BUFFER SPK OUT H/P OUT MUTE MULTI OUT MAIN SPK OUT 2.83V (1W/8ohms) +27dB CD IN (200mV) -35.5dB -18dB +15.5dB H/P OUT 47mV (1W/8ohms) VOL 00 MULTI ROOM +16.2dB MULTI ROOM OUT 1.2V...

  • Page 8: Semiconductors

    DRA-395 SEMICONDUCTORS Pin Name Function IC’s SPEAKER B LED 2 SPEAKER B LED indicator control CXP82840-319Q (IC900) STBY LED 3 STANDBY LED indicator control PD2/A53 FL P38 PD3/A52 FL P37 PD4/A51 FL P36 PD5/A50 FL P01 PD6/A49 FL P02 PD7/A48...
  • Page 9 DRA-395 LC72131M (IC401) LA1266 (IC402) AM-IF FM-IF FM-IN XOUT XI N V cc POST FM - IF Q.D. BUFFER BUFFER V ss AOUT AM - I N AM-IF AI N NARROW S-METER BUFFER S-METER DRIVER F MI N AMI N...
  • Page 10 DRA-395 TC9274N-008 (IC303) KIA7805AP (IC103) NJM7915FA (IC102) NJM7805FA (IC104) KIA7815AP (IC101) FRONT FRONT VIEW VIEW PC74HC4094 (IC604) KIC9459F (IC601) L-OUT R-OUT L-IN R-IN L-ch R-ch L-LD1 R-LD1 L-LD2 R-LD2 L.A.GND R.A.GND DATA M62446FP (IC603) DATA OUT4 OUT3 OUTPUT PORT volume...
  • Page 11 DRA-395 TRANSISTORS DTA114EK DTC series DTA series DTA114YK DTC114YK VIEW DTA114ES DTA144ES 10kohm 10kohm 10kohm 10kohm DTC114ES DTA114EK DTC114ES 10kohm 10kohm DTC114YK 10kohm 47kohm DTA114ES 10kohm 10kohm 47kohm DTA114YK 47kohm DTC114YS DTC114YS DTA114ES 47kohm 47kohm DTC144ES 47kohm 47kohm DTC144ES FRONT...
  • Page 12 DRA-395 FL DISPLAY 16-st-42GNK (FL900) TUNED STEREO PHONO TUNER DVD / - 2 - 3 AUTO V.AUX TAPE MULTI PRO LOGIC DIGITAL DIGITAL ANALOG G2~G16 G12 G10 TUNED STEREO PHONO TUNER DVD / VDP TV / DBS - 2 - 3 V.AUX...

  • Page 13: Printed Wiring Boards

    DRA-395 PRINTED WIRING BOARDS MAIN P .W.B. UNIT Ass'y COMPONENT SIDE...
  • Page 14 DRA-395 FRONT P .W.B. UNIT Ass'y COMPONENT SIDE...
  • Page 15 DRA-395 FOIL SIDE...
  • Page 16 DRA-395 TUNER P .W.B. UNIT Ass'y COMPONENT SIDE...
  • Page 17 DRA-395 FOIL SIDE...

  • Page 18: Note For Parts List

    DRA-395 NOTE FOR PARTS LIST Part indicated with the mark " " are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused. When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying.
  • Page 19 DRA-395 PARTS LIST OF P.W.B. UNIT MAIN P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP R162-164 244 2055 996 Metal film 1.2kohm 1W (NB) C060012265050 R165 244 2043 937 Metal oxide 10ohm 1W (NB)
  • Page 20 DRA-395 Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks Q'ty C301 Electrolytic 10uF/50V D040100087050 RLY104 960 0181 605 Relay (G5PA-1-8) G680120502010 C302,303 963 9005 273 Ceramic 220pF/50V D004221067060 C304 Electrolytic 10uF/50V D040100087050 T101 960 0185 708 Power trans. (Sub)
  • Page 21 DRA-395 FRONT P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks SEMICONDUCTORS GROUP R977-980 963 9004 397 Carbon chip 56kohm 1/16W C20005636M160 R982 963 9004 397 Carbon chip 56kohm 1/16W C20005636M160 IC601...
  • Page 22 DRA-395 TUNER P.W.B. UNIT ASS'Y Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks C701-712 Electrolytic 10uF/50V D040100087050 SEMICONDUCTORS GROUP C713 Electrolytic 47uF/25V D040470084070 IC401 963 0043 700 IC LC72131 J120721310030 C714 Electrolytic 100uF/35V D04010108505C...
  • Page 23 DRA-395 Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks R428 963 9004 847 Carbon chip 3.3kohm 1/16W C20003326M160 C422 963 9004 656 Ceramic chip 470pF/50V D010471167160 R429 963 9004 850 Carbon chip 82ohm 1/16W...
  • Page 24 DRA-395 Ref. No. Part No. Part Name Remarks Ref. No. Part No. Part Name Remarks Q'ty C521 963 9004 504 Ceramic 0.01uF/50V D004103097060 SW935 963 0045 708 Tact switch G180000270010 C550 Electrolytic 0.1uF/50V D040R10087070 SW937,938 963 0045 708 Tact switch...

  • Page 25: Exploded View

    DRA-395 EXPLODED VIEW...

  • Page 26: Parts List Of Exploded View

    DRA-395 PARTS LIST OF EXPLODED VIEW Ref. No. Part No. Part Name Remarks Q'ty Ref. No. Part No. Part Name Remarks Q'ty 963 0080 200 Main P.W.B. unit Ass’y 7025HK0010010 31 963 0074 009 8P speaker terminal JACK102 Main P.W.B. unit G61408103610A Input P.W.B.

  • Page 27: Packing View

    DRA-395 PACKING VIEW PARTS LIST OF PACKING & ACCESSORIES Ref. No. Part No. Part Name Remarks Q'ty Ref. No. Part No. Part Name Remarks Q'ty 2 963 0080 006 Instruction manual 5707210170270 10 963 0080 103 Carton case 6007210310030 ...

  • Page 28: Wiring Diagram

    DRA-395 WIRING DIAGRAM...
  • Page 29 DRA-395 SCHEMATIC DIAGRAMS(1/6) + B LINE - B LINE NOTICE WARNING: SIGNAL LINE Parts marked with this symbol have critical characteristics. ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture.
  • Page 30 DRA-395 SCHEMATIC DIAGRAMS(1/6) + B LINE - B LINE NOTICE WARNING: SIGNAL LINE Parts marked with this symbol have critical characteristics. ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture.

  • Page 31: Schematic Diagrams

    SCHEMATIC DIAGRAMS(1/6)
  • Page 32 DRA-395...
  • Page 33 WARNING: NOTICE Parts marked with this symbol ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Use ONLY replacement parts recommen ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 34: Input Unit

    + B LINE - B LINE SIGNAL LINE have critical characteristics. commended by the manufacture. ustomer, make sure you make either (1) a ne to chassis resistance check. If the leakage SCHEMATIC DIAGRAMS(1/6) r if the resistance from chassis to either side INPUT UNIT 60kohms, the unit is defective.
  • Page 35 DRA-395 SCHEMATIC DIAGRAMS(2/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 36 DRA-395 SCHEMATIC DIAGRAMS(2/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 37 SCHEMATIC DIAGRAMS(2/6)
  • Page 38 DRA-395...
  • Page 39 WARNING: NOTICE Parts marked with this symbol ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Use ONLY replacement parts recommen ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 40: Volume Unit

    have critical characteristics. ecommended by the manufacture. + B LINE customer, make sure you make either (1) a - B LINE SCHEMATIC DIAGRAMS(2/6) ine to chassis resistance check. If the leakage SIGNAL LINE or if the resistance from chassis to either side VOLUME UNIT 60kohms, the unit is defective.
  • Page 41 DRA-395 SCHEMATIC DIAGRAMS(3/6) WARNING: NOTICE ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 42 DRA-395 SCHEMATIC DIAGRAMS(3/6) WARNING: NOTICE ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 43 SCHEMATIC DIAGRAMS(3/6)
  • Page 44 DRA-395...
  • Page 45 NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol Use ONLY replacement parts recommend ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 46: Main Unit

    have critical characteristics. ommended by the manufacture. + B LINE - B LINE ustomer, make sure you make either (1) a SCHEMATIC DIAGRAMS(3/6) e to chassis resistance check. If the leakage SIGNAL LINE r if the resistance from chassis to either side MAIN UNIT 0kohms, the unit is defective.
  • Page 47 DRA-395 SCHEMATIC DIAGRAMS(4/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture. + B LINE...
  • Page 48 DRA-395 SCHEMATIC DIAGRAMS(4/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture. + B LINE...
  • Page 49 SCHEMATIC DIAGRAMS(4/6)
  • Page 50 DRA-395...
  • Page 51 WARNING: NOTICE Parts marked with this symbol ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Use ONLY replacement parts recommen ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 52: Video Unit

    have critical characteristics. ecommended by the manufacture. + B LINE - B LINE customer, make sure you make either (1) a SCHEMATIC DIAGRAMS(4/6) ine to chassis resistance check. If the leakage or if the resistance from chassis to either side VIDEO UNIT 60kohms, the unit is defective.
  • Page 53 DRA-395 SCHEMATIC DIAGRAMS(5/6) NOTICE WARNING: + B LINE Parts marked with this symbol have critical characteristics. ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture.
  • Page 54 DRA-395 SCHEMATIC DIAGRAMS(5/6) NOTICE WARNING: + B LINE Parts marked with this symbol have critical characteristics. ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recommended by the manufacture.
  • Page 55 SCHEMATIC DIAGRAMS(5/6)
  • Page 56 DRA-395...
  • Page 57 WARNING: NOTICE Parts marked with this symbol ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacement parts recomm EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 58: Front Unit

    + B LINE have critical characteristics. recommended by the manufacture. SIGNAL LINE e customer, make sure you make either (1) a SCHEMATIC DIAGRAMS(5/6) a line to chassis resistance check. If the leakage FRONT UNIT s, or if the resistance from chassis to either side 460kohms, the unit is defective.
  • Page 59 DRA-395 SCHEMATIC DIAGRAMS(6/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 60 DRA-395 SCHEMATIC DIAGRAMS(6/6) NOTICE WARNING: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture. ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD + B LINE...
  • Page 61 SCHEMATIC DIAGRAMS(6/6)
  • Page 62 DRA-395...
  • Page 63 WARNING: NOTICE Parts marked with this symbol ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM Use ONLY replacement parts recommen ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CAUTION: CONDITION.

  • Page 64: Tuner Unit

    have critical characteristics. commended by the manufacture. + B LINE ustomer, make sure you make either (1) a SIGNAL LINE SCHEMATIC DIAGRAMS(6/6) ne to chassis resistance check. If the leakage r if the resistance from chassis to either side TUNER UNIT 60kohms, the unit is defective.

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