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Denon AVR-3801 Service Manual
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Denon AVR-3801 Service Manual

Denon AVR-3801 Service Manual

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Hi-Fi Component

SERVICE MANUAL

AVR-3801
MODEL
AV SURROUND RECEIVER
Some illustrations using in this service manual are slightly different from the actual set.

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Summary of Contents for Denon AVR-3801

  • Page 1: Service Manual

    Hi-Fi Component SERVICE MANUAL AVR-3801 MODEL AV SURROUND RECEIVER Some illustrations using in this service manual are slightly different from the actual set.

  • Page 2: Block Diagram

    AVR-3801 BLOCK DIAGRAM...

  • Page 3: Wiring Diagram

    AVR-3801 WIRING DIAGRAM...
  • Page 4 AVR-3801 SCHEMATIC DIAGRAMS (1/15) + 15V - 15V B LINE B LINE SIGNAL WARNING: Parts marked with this symbol have critical characteristics. SCHEMATIC DIAGRAMS (1/15) Use ONLY r eplacement parts recommended by the manufacture. CAUTION: 1U-3320 (1/4) AUDIO/DSP UNIT NOTICE 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 5: Schematic Diagrams

    AVR-3801 SCHEMATIC DIAGRAMS (1/15)
  • Page 7 + 15V - 15V WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: Before returning the unit to the customer, make sure you make either (1) a NOTICE leakage current check or (2) a line to chassis resistance check. If the leakage ALL RESISTANCE VALUES IN OHM.
  • Page 8 B LINE B LINE SIGNAL SCHEMATIC DIAGRAMS (1/15) 1U-3320 (1/4) AUDIO/DSP UNIT...
  • Page 9 AVR-3801 SCHEMATIC DIAGRAMS (2/15) + 5V + 3.3V + 5V NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 10 SCHEMATIC DIAGRAMS (2/15)
  • Page 11 AVR-3801 + 5V...
  • Page 12 NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 13 + 3.3V + 5V B LINE SCHEMATIC DIAGRAMS (2/15) SIGNAL 1U-3320 (2/4) AUDIO DSP UNIT...
  • Page 14 AVR-3801 SCHEMATIC DIAGRAMS (3/15) + 5V + 3.3V + 5V NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 15 AVR-3801 SCHEMATIC DIAGRAMS (3/15)
  • Page 16 + 5V + 3.3V + 5V...
  • Page 18 NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 19 AVR-3801 SCHEMATIC DIAGRAMS (4/15) + 5V - 15V + 5V + 15V B LINE B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 20 SCHEMATIC DIAGRAMS (4/15) + 5V + 5V...
  • Page 21 AVR-3801 - 15V + 15V...
  • Page 23 B LINE B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 24 AVR-3801 SCHEMATIC DIAGRAMS (5/15) - 15V + 15V NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 25 AVR-3801 SCHEMATIC DIAGRAMS (5/15)
  • Page 26 - 15V...
  • Page 28 + 15V NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 29 AVR-3801 SCHEMATIC DIAGRAMS (6/15) + 5V + 15V - 15V + 59V + 59V + 20V - 33V - 59V + 59V + 5.4V + 6V + 5V + 6.4V NOTICE WARNING: ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics.
  • Page 30 SCHEMATIC DIAGRAMS (6/15) + 15V - 15V...
  • Page 31 AVR-3801 + 5V + 59V + 59V + 20V...
  • Page 32 + 6.4V...
  • Page 33 - 33V - 59V + 59V + 5.4V + 6V + 5V NOTICE WARNING: ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM Parts marked with this symbol have critical characteristics. ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD Use ONLY replacemen t parts recommended by the manufacture.
  • Page 34 AVR-3801 SCHEMATIC DIAGRAMS (7/15) + 20V + 15V B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 35 AVR-3801 SCHEMATIC DIAGRAMS (7/15) + 20V + 15V...
  • Page 38 B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 39 AVR-3801 SCHEMATIC DIAGRAMS (8/15) + 20V B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 40 SCHEMATIC DIAGRAMS (8/15) + 20V...
  • Page 41 AVR-3801...
  • Page 42 + 20V...
  • Page 43 B LINE SIGNAL NOTICE ALL RESISTANCE VALUES I N OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES I N MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRE NT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 44 AVR-3801 SCHEMATIC DIAGRAMS (9/15) + 0.4V + 59V + 58.5V + 1.2V + 57.9V + 0.6V + 31V + 1.1V - 1.1V - 1.2V - 59V + 0.3V - 56.8V - 56.2V - 56.2V + 59V - 59V + 6V + 10.5V...
  • Page 45 AVR-3801 SCHEMATIC DIAGRAMS (9/15) + 0.4V + 59V + 58.5V + 1.2V + 57.9V + 0.6V + 31V + 1.1V - 1.1V - 1.2V - 59V + 0.3V - 56.8V - 56.2V - 56.2V...
  • Page 46 + 59V - 59V...
  • Page 47 + 6V...
  • Page 48 + 10.5V B LINE B LINE SIGNAL NOTICE ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
  • Page 49 AVR-3801 SCHEMATIC DIAGRAMS (10/15) + 5V + 9V + 5V + 5V + 6.4V + 10.1V + 20V + 24.6V + 15V - 15V + 25.7V B LINE B LINE SIGNAL WARNING: Parts marked with this symbol have critical characteristics.
  • Page 50 SCHEMATIC DIAGRAMS (10/15) + 5V + 9V + 5V + 6.4V + 10.1V + 20V + 24.6V + 15V - 15V + 25.7V...
  • Page 51 AVR-3801 + 5V...
  • Page 52 WARNING Parts marked Use ONLY r ep CAUTION: Before returni NOTICE leakage curre ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM current excee ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD of the power c EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT WARNING CONDITION.
  • Page 53 B LINE B LINE SIGNAL with this symbol have critical characteristics. placement parts recommended by the manufacture. SCHEMATIC DIAGRAMS (10/15) ing the unit to the customer, make sure you make either (1) a ent check or (2) a line to chassis resistance check. If the leakage 1U-3319-1 REGULATOR UNIT eds 0.5 milliamps, or if the resistance from chassis to either side 1U-3319-4,5 DIGITAL INPUT UNIT...

  • Page 54: Schematic Diagrams

    AVR-3801 SCHEMATIC DIAGRAMS (11/15) + 12V + 5.3V + 6V B LINE SIGNAL WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: Before returning the unit to the customer, make sure you make either (1) a NOTICE leakage current check or (2) a line to chassis resistance check.
  • Page 55 AVR-3801 SCHEMATIC DIAGRAMS (11/15)
  • Page 56 + 12V...
  • Page 57 WARNING: Parts marked with this s Use ONLY r eplacement CAUTION: Before returning the unit NOTICE leakage current check o ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM current exceeds 0.5 mill ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD of the power card is less EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT WARNING:...
  • Page 58 + 5.3V + 6V B LINE SIGNAL symbol have critical characteristics. t parts recommended by the manufacture. t to the customer, make sure you make either (1) a or (2) a line to chassis resistance check. If the leakage liamps, or if the resistance from chassis to either side s than 460 kohms, the unit is defective.
  • Page 59 AVR-3801 SCHEMATIC DIAGRAMS (12/15) + 4.8V + 6.3V + 6.3V WARNING: B LINE Parts marked with this symbol have critical characteristics. SIGNAL Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM.
  • Page 60 SCHEMATIC DIAGRAMS (12/15) + 6.3V...
  • Page 61 AVR-3801 + 4.8V...
  • Page 62 WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM leakage current check or (2) a line to chassis resistance check.
  • Page 63 + 6.3V B LINE SIGNAL SCHEMATIC DIAGRAMS (12/15) 1U-3318-3 S-VIDEO UNIT...
  • Page 64 AVR-3801 SCHEMATIC DIAGRAMS (13/15) + 6.3V + 6.3V B LINE SIGNAL WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM.
  • Page 65 AVR-3801 SCHEMATIC DIAGRAMS (13/15) + 6.3V...
  • Page 66 + 6.3V...
  • Page 67 WARNING: Parts marked with t Use ONLY r eplace CAUTION: NOTICE Before returning th ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM leakage current che ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD current exceeds 0.5 of the power card is EACH VOLTAGE AND CURRENT ARE MEASUERD AT NO SIGNAL INPUT CONDITION.
  • Page 68 B LINE SIGNAL this symbol have critical characteristics. ement parts recommended by the manufacture. he unit to the customer, make sure you make either (1) a eck or (2) a line to chassis resistance check. If the leakage 5 milliamps, or if the resistance from chassis to either side s less than 460 kohms, the unit is defective.
  • Page 69 AVR-3801 SCHEMATIC DIAGRAMS (14/15) - 59V + 6.4V + 6V + 12V + 5V + 15V - 15V WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM.
  • Page 70 SCHEMATIC DIAGRAMS (14/15) + 12V...
  • Page 71 AVR-3801 - 59V + 6.4V + 6V + 5V...
  • Page 72 NOTICE ALL RESISTANCE VALUES IN OHM B LINE ALL CAPACITANCE VALUES IN M EACH VOLTAGE AND CURRENT A B LINE CONDITION. CIRCUIT AND PARTS ARE SUBJE SIGNAL NOTICE.
  • Page 73 + 15V - 15V WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: Before returning the unit to the customer, make sure you make either (1) a HM. k=1,000 OHM M=1,000,000 OHM leakage current check or (2) a line to chassis resistance check.
  • Page 74 AVR-3801 SCHEMATIC DIAGRAMS (15/15) - 33V + 5V B LINE B LINE WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM.
  • Page 75 AVR-3801 SCHEMATIC DIAGRAMS (15/15) - 33V...
  • Page 77 WARNING: Parts marked with this symbol have critical characteristics. Use ONLY r eplacement parts recommended by the manufacture. CAUTION: NOTICE Before returning the unit to the customer, make sure you make either (1) a ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM leakage current check or (2) a line to chassis resistance check.
  • Page 78 + 5V B LINE B LINE SCHEMATIC DIAGRAMS (15/15) 1U-3316-2 DISPLAY UNIT 1U-3316-3 VOL UNIT...