NAD C 320BEE Service Manual
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NAD C 320BEE Service Manual

Nad c 320bee stereo amplifier service manual
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See also: Owner's Manual
NAD
C 320BEE
STEREO
AMPLIFIER

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Summary of Contents for NAD C 320BEE

  • Page 1 C 320BEE STEREO AMPLIFIER...

  • Page 2: Product Safety Servicing Guidelines

    PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY.

  • Page 3: Servicing Precautions

    SERVICING PRECAUTIONS CAUTION : Before servicing the A/V Receiver covered by this Electrostatically Sensitive (ES) Devices service data and its supplements and addends, read and follow the Some semiconductor (solid state) devices can be damaged easily by SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances static electricity.

  • Page 4: Specifications

    SPECIFICATIONS POWER AMPLIFIER SECTION STEREO MODE CONTINUOUS AVERAGE POWER 50 W (17 dBW) OUTPUT INTO 8 OHMS OR 4 OHMS (Min. power per channel, 20 Hz – 20 kHz, with no more than rated distortion) Rated Distortion 0.03% (THD 20 Hz – 20 kHz) Clipping power 68 W (maximum continuous power per channel 4 and 8).

  • Page 5: Preamplifier Section

    PREAMPLIFIER SECTION LINE LEVEL INPUTS (Disk, CD, Video, Auxiliary, Tuner, Tape 1,Tape 2) Input impedance (R and C) 200 kohms + 320 pF Input sensitivity (ref. rated power) 220 mV Maximum input signal Signal / Noise ratio, A-weighted 93.0 dB ref. 1W (from CD Input to Speakers Output, Volume Setting for 500mV in , 8ohms 1W out) Signal to noise ratio preamp out, IHF “A”...

  • Page 6: Alignment Procedures

    ALIGNMENT PROCEDURES I. INITIAL ADJUSTMENT (No load connected) A. OUTPUT OFFSET VOLTAGE 1. Connect a DC Millivoltmeter to L Channel speaker output terminals. 2. Turn unit ON and adjust VR21 (100 ohms) to get the reading of 0V+/-30mV. 3. Connect the DC Millivoltmeter to R Channel speaker output terminals and adjust VR11 (100ohms) to get a reading of 0V+/-30mV.
  • Page 7 1K2/2W 1K2/2W R153 R253 150/1/4W R249 R149 2K7/1W 2K7/1W 2200u/6.3V C216 2200u/6.3V C116 R146 R246 3.3/0.5W 330/0.5W 330/0.5W 3.3/0.5W 3.3/0.5W 330/0.5W 330/0.5W 3.3/0.5W R225 R128 R124 R125 R129 R228 R224 R229...
  • Page 8 C320BEE INPUT SELECT CIRCUIT ON THE MAIN BOARD RL31A DISC C325 C320BEE TONE CONTROL CIRCUIT C341 L PRE-OUT R335 K363 47u/25 47u/25 R349 100p R325 R347 C343 390 MF 100K RL32A 220p RT33A R333 R321 C321 C345 R329 4.7K 3K3 MF 0.1U 20KB 0.1U...
  • Page 9 +12V IND. SOFT VOL- VOL+ MUTE REMOTE PROTECTION...
  • Page 11 EXPLODED VIEW PARTS LIST 0011 C026 0012 C025 C023 C024 R004 R005 C020 0011 C023 0012 C019 C022 0007 C018 C027 R002 R003 0020 C021 0007 0005 C011 T001 0005 C012 0007 C015 C017 C010 C016 0008 0009 R001 C008 C006 C009 0005...

  • Page 12: Exploded View Parts List

    EXPLODED VIEW PARTS LIST Ref. No. Part No. Description Qt'y Ref. No. Part No. Description Qt'y C001 66-014001-0 Chassis F009 74-001002-0 Input Button C002 66-001004-0 Base Cover F010 76-001001-0 LED Lens C003 75-001008-0 Foot F011 76-001002-0 IR Lens C004 78-001002-0 Rubber Pad F012 66-001005-1...

  • Page 13: Parts List

    PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION DIODES 33-44148-01 Switch Diode 1N4148 D61 D62 D63 D64 D12 D13 D14 D15 D16 D17 D22 D23 D24 D25 D26 D27 D37 D38 D39 D310 D311 33-44148-02 Switch Diode 1N4148 D312 D313 D403 D412 D417 D418 D423 D428 D429 D510 D511 D512 D513 D515 D42 D43...
  • Page 14 PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION 05-40012-00 Ceramic Capacitor 40p,100V,20% C611 05-15012-00 Ceramic Capacitor 15p,100V,20% C611 C31 C32 C33 C34 C35 C36 C37 C38 C39 C310 C311 05-10151-01 Ceramic Capacitor 100p,50V,20% C312 C313 C314 C315 C316 C317 C318 05-10151-00 Ceramic Capacitor 100p,50V,20% C69 C610...
  • Page 15 PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION 07-20512-10 Metal Film Resistor 5.1K,1/4W,5% R359 R360 07-21402-10 Metal Film Resistor 14K,1/4W,5%(OMIT) R319 R320 07-20202-10 Metal Film Resistor 2K,1/4W,5% R412 07-20222-10 Metal Film Resistor 2.2K,1/4W,5% R414 07-24301-00 Metal Film Resistor 4.3K/1/2W 1% R146 R246 07-21500-10 Metal Film Resistor 150R,1/4W,1%...
  • Page 16 PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION 07-10184-10 Carbon Film Resistor 180K,1/4W,5% R438 R12 R22 R102 R104 R202 07-10224-10 Carbon Film Resistor 220K,1/4W,5% R204 R457 R345 R346 07-10334-10 Carbon Film Resistor 330K,1/4W,5% R451 R483 07-10474-10 Carbon Film Resistor 470K,1/4W,5% R472 07-10564-10 Carbon Film Resistor 560K,1/4W,5%...
  • Page 17 PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION S52 S53 S57 S55 S54 S56 11-04101-00 Tact Switch IT-1102D-116 11-02202-00 Tone Switch SPUN19K605 SW31 FUSES 20-12501-00 Fuse T0.5AL/250V 20-12632-00 Fuse T6.3AL/250V F41 F42 F43 F44 20-20000-00 Fuse Holder HF-004 TRANSFORMERS 18-33201-20 Transformer TD-230-0150A T401 18-33201-10...
  • Page 18 PARTS LIST DESCRIPTION PART NUMBER PARTS LOCATION 61-022204-6 Self Taping Screw BTB2.6X4 61-044514-0 Machine Screw MT4X14 61-022510-5 Machine Screw MB2.5X10 61-022514-5 Machine Screw MB2.5X14 62-010202-5 M2.5 64-108050-0 Bolt M8X50 62-010802-0 63-020820-0 Spring Washer MECHANICAL MISCELLANEOUS 78-001002-0 Rubber Pad 78-001001-0 Sleeve Boot 811810-23 85-001001-0 PCB SPACER...
  • Page 19 © NAD 2003 NAD ELECTRONICS LTD TORONTO...

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