NAD-C165BEE-pre-sm维修电路原理图.pdf

《NAD-C165BEE-pre-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《NAD-C165BEE-pre-sm维修电路原理图.pdf（37页珍藏版）》请在收音机爱好者资料库上搜索。

1、NAD SERVICE MANUAL C 165BEE STEREO PREAMPLIFIER C 165BEE STEREO PREAMPLIFIER RadioFans.CN 收音机爱 好者资料库 TABLE OF CONTENTS DESCRIPTION P A G E SERVICE CAUTION.3-4 REAR PANEL/FRONT PANEL VIEW.5 SPECIFICATIONS 6 WIRING DIAGRAM7 BLOCK DIAGRAM. .8-12 ALIGNMENT PROCEDURE.13 SCHEMATICS.14-16 PCB LAYOUT.17-20

2、TROUBLE SHOOTING GUIDE.21 ELECTRICAL PARTS LIST.22-34 EXPLODED VIEW.35 EXPLODED VIEW PARTS LIST.36 C725BEE PACKING ACCESSORY AND PARTS LIST.37 ? RadioFans.CN 收音机爱 好者资料库 PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATI

3、ONS WITHOUT MANUFACTURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERV

4、ICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM AC LINE SHOCK. SAFETY CHECKS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. A CHECK SHOULD BE MADE OF THE FOLLOWING. SUBJECT :

5、FIRE CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD, 150V AC TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE

6、 AC PLUG AND REPEAT AC VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT : GRAPHIC SYMBOLS SUBJECT : T

7、IPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATOR

8、S WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCAL MOUNTING KIT MUST FOLLOW T

9、HE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUS

10、TOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WI

11、TH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCRE

12、EN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE

13、 PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” WITHIN THE PRODUCTS ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING)

14、 INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. ? RadioFans.CN 收音机爱 好者资料库 SERVICING PRECAUTIONS CAUTION : Before servicing the A/V Receiver covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create conf

15、lict between the following servicing precautions and any of the safety precautions in this publication, always follow the safety precautions. Remember Safety First: General Servicing Precautions 1. Always unplug the A/V Receiver AC power cord from the AC power source before: (1) Removing or reinstal

16、ling any component, circuit board, module, or any other assembly. (2) Disconnecting or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an electrolytic capacitor. Caution : A wrong part substitution or incorrect polarity inst

17、allation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this A/V Receiver or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts w

18、ith a pipe cleaner, cottontipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service manual might be equipped. 5. Do not ap

19、ply AC power to this A/V Receiver and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 6. Always connect test instrument ground lead to the appropriate ground before connecting the test instrument positive lead. Always remove the test instrument g

20、round lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive par

21、ts (Note 1) should be more than 1M-ohm. Note 1 : Accessible Conductive Parts including Metal panels, Input terminals, Earphone jacks, etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are calle

22、d Electrostatically Sensitive (ES) Devices. Examples of typical Es devices are integrated circuits and some field effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediatel

23、y before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reas

24、ons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to s

25、older or unsolder ES devices. 4. Use only an antistatic solder removal device. Some solder removal devices not classified a “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use freonpropelled chemicals. These can generate electrical charge sufficient to damage

26、 ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material). 7. lmmedia

27、tely before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

28、 8. Minimize bodily motions when handing unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.) ? RadioFans.CN 收音机爱 好者资料库 ?

29、 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? RadioFans.CN 收音机爱 好者资料库 OVERALL SPECIFICATIONS LINE LEVEL INPUT Input impedance (R and C) 100 k+ 320 pF Input sensitivity 158 mV (ref. 500 mV out) Maximum input signal 9 V

30、 Signal/Noise ratio, A-weighted 108 dB (ref. 500 mV in 500 mV out, volume set to unity gain) 106 dB (ref. 2V out, Volume maximum) Channel Separation 80 dB (ref. 1 kHz/10 kHz) Frequency response 0.1 dB (ref. 20 Hz - 20 kHz, Tone defeat ON) 0.5 dB (ref. 20 Hz - 20 kHz, Tone defeat OFF) Frequency respo

31、nse (subwoofer out) 100 Hz (ref. -3 dB) OUTPUT Output impedance - Pre out 75 Tape out Source Z + 440 Sub out 100 Headphones 10 Maximum output level - Pre out 10 V into 600 Tape out 10 V into 10 k load Sub out 7 V into 1 k load Headphones 5 V into 600 2 V into 32 THD (CCIF IMD, DIM 100) 0.001 % dB (r

32、ef. 20 Hz 20 kHz, 2 Vout) TONE CONTROLS Treble 5 dB at 10 kHz (ref. 2V in 500 mV out) Bass 5 dB at 100 Hz (ref. 2V in 500 mV out) POWER CONSUMPTION Normal operation 21 W Standby mode 0.8 W PHONO INPUT Input impedance - MC 40,100,600 (R) 1 nF (C) MM 47 k (R) 220,300,400 pF (C) Input sensitivity - MC

33、0.15 mV (ref. 1 kHz 500 mV out) MM 2.63 mV (ref. 1 kHz 500 mV out) Input overload - MC 1 mV/10 mV/100 mV (20 Hz/1 kHz/20 kHz) MM 16 mV/147 mV/1.4 (20 Hz/1 kHz/20 kHz) Gain - MC in - Tape out 59.8 dB1 (ref. 1 kHz, 10 k load) MM in - Tape out 36.5 dB (ref. 1 kHz, 10 k load) THD (CCIF IMD, DIM 100) 78

34、dB2 (ref. 0.5 mV) MM 86 dB3 (ref. 0.5 mV) RIAA response accuracy 0.5 dB (ref. 20 Hz 50 Hz) 0.3 dB (ref. 50 Hz 20 kHz) Infrasonic filter 10 Hz (at -3 dB) 5 Hz (at -14 dB) Channel Separation - MC 60 dB (ref. 1 kHz/10 kHz) MM 60 dB (ref. 1 kHz/10 kHz) DIMENSION AND WEIGHT Dimensions (W x H x D) 435 x 8

35、0 x 286 mm (Net) 435 x 99 x 315 mm (Gross Net weight 6 kg Shipping weight 7.8 kg ? RadioFans.CN 收音机爱 好者资料库 PHONO SWITCH NAD C165 KEY BOARD Vm1.0 COPYRIGHT C 2008 NAD ELECTRONICS HEADPHONE Vm1.0 C165BEE PHONE AMP Vm1.0 UL1672#18AWG UL1672 AWG#22 CZ58 HEADPHONE Vm1.0 CZ102 NAD C165 TRANSFORMER TO SWIT

36、CHED AC OUTLET UL3266 AWG#22 CB52 CB57 UL3266 AWG#18 CB102 CB103 UL2468#26AWG TO AC INLET CB53 UL2468#26AWG CB104 CB55 CB56 UL1672#18AWG UL1672#18AWG UL1672#18AWG CB54 120V VERSION ONLY WIRING DIAGRAM NAD C165BEE TONE BOARD Vm1.0 COPYRIGHT C 2008 NAD ELECTRONICS INSERT INSERT CZ106 INSERT UL2468#26A

37、WG FPC2.5-19 S=1.25mm CZ701 CB101 MM MODULE CZ118 M401 LINE MODULE CZ116 M402 LINE MODULE CZ114 M403 UL1015#16AWG UL2468#26AWG CZ105 P100 NAD C165BEE POT BOARD Vm1.0 COPYRIGHT C 2008 NAD ELECTRONICS CB105 P101 CB106 INSERT INSERT MC INPUT R Vm1.0 CZ111 MC INPUT L Vm1.0 CZ110 MM INPUT Vm1.0 CZ109 INS

38、ERT CB109 CB107 CB111 CB110 UL2468#26AWG C165 BEE MAINBOARD LINE MODULE CZ113 INSERT M303 CB108 INSERT CZ117 INSERT MM MODULE M301 CZ115 INSERT LINE MODULE M302 CZ108 CZ107 ? RadioFans.CN 收音机爱 好者资料库 2SK363 Q109 LINEAR POWERBOARD SECTION MAINBOARD SECTION KEYBOARD SECTION SWITCHING POWER +5.5V TRANSF

39、ORMER MODULE M403 PHONE AMP HP OUT PREOUT RELAYRELAY RL110RL109 +5.5V BLOCK DIAGRAM SUBOUT PHONO IN MM MC INPUT SW1 INPUT SELECTOR INPUT RES S101 RIAA CIRCUIT M302 MODULE M402 LINE BALANCE MP REC OUT AUX TAPE DISC OUTPUT RELAY CD TUNER INPUT RELAY SELECTOR MMINPUT CAP RV13 VOLUME CONTROL CIRCUIT MC

40、AMP MODULE M401 M301S102 MODULE LINE M403 M303 RV14 RL111 DEFEAT CONTROL RV11&RV12 TONE TONE IC73 MCU TONE DEFEAT STANDBY KEY LED ? RadioFans.CN 收音机爱 好者资料库 +5.5V NC 1 NC 2 NC 3 Vss 4 SDA 5 SCL 6 NC 7 Vcc 8 IC71 24C01 Y71 11.0592MHz 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CZ701 CON19 PHO C AU

41、 M TU TP2 TP1 TONE D PHONE MUTE V S G IC703 IS1U60L HEADPHONE DET 1 1 3 3 4 4 2 2 D707 3LED AMBER BLUE +5.5V RED P1.5(MOSI) 1 P1.6(MISO) 2 P1.7(SCK) 3 RST 4 P3.0(RXD) 5 P3.1(TXD) 7 NC 6 P3.2(INT0) 8 P3.3(INT1) 9 P3.4(T0) 10 P3.5(T1) 11 P3.6(WR) 12 P3.7(RD) 13 XTAL2 14 XTAL1 15 GND 16 GND 17 P2.0(A8)

42、 18 P2.1(A9) 19 P2.2(A10) 20 P2.3(A11) 21 P2.4(A12) 22 P2.5(A13) 23 P2.6(A14) 24 P2.7(A15) 25 PSEN 26 ALE/PROG 27 NC 28 EA/VPP 29 P0.7(AD7) 30 P0.6(AD6) 31 P0.5(AD5) 32 P0.4(AD4) 33 P0.3(AD3) 34 P0.2(AD2) 35 P0.1(AD1) 36 P0.0(AD0) 37 VCC 38 NC 39 P1.0(T2) 40 P1.1(T2 EX) 41 P1.2 42 P1.3 43 P1.4 44 IC

43、73 AT89S52-TQFP +5.5V 12 34 56 78 910 J202 ISP MCU CONNECTION DIAGRAM TO LED AND CONTROL SIGNAL TO MAINBOARD KEY ? RadioFans.CN 收音机爱 好者资料库 AT89S52 KEY BOARD IC73 PORT 2 DRIVERS PORT 2 LATCH P2.0 - P2.7 FLASH PORT 0 LATCH RAM PROGRAM ADDRESS REGISTER BUFFER PC INCREMENTER PROGRAM COUNTER DUAL DPTR IN

44、STRUCTION REGISTER B REGISTER INTERRUPT, SERIAL PORT, AND TIMER BLOCKS STACK POINTER ACC TMP2TMP1 ALU PSW TIMING AND CONTROL PORT 1 DRIVERS P1.0 - P1.7 PORT 3 LATCH PORT 3 DRIVERS P3.0 - P3.7 OSC GND VCC PSEN ALE/PROG EA / VPP RST RAM ADDR. REGISTER PORT 0 DRIVERS P0.0 - P0.7 PORT 1 LATCH WATCH DOG

45、ISP PORT PROGRAM LOGIC ? RadioFans.CN 收音机爱 好者资料库 24C01 KEY BOARDIC71 PIN CONFIGURATION CONTROL LOGIC X REDOCED SLAVE ADDRESS REGISTER & COMPARATOR WORD ADDRESS COUNTER HIGH VOLTAGE GENERATOR, TIMING & CONTROL EEPROM ARRAY Y DECODER DATA REGISTER Clock DI/O ACK 8 5 6 7 4GND WP SCL SDA Vcc nMOS FUNCTI

46、ONAL BLOCK DIAGRAM 1 2 3 45 6 7 8 NC NC NC VSS VCC NC SCL SDA ? RadioFans.CN 收音机爱 好者资料库 TNY274 POWERBOARD:IC51 PIN CONNECTION : BLOCK DIAGRAM: ? RadioFans.CN 收音机爱 好者资料库 ? RadioFans.CN 收音机爱 好者资料库 ! AC POWER CORD (120V Version) SW52 POWER SWITCH WH (120V Version) 1 1 2 2 AC OUTLET?UNSWITCHED? BL 1 2 3

47、 CZ55 BK ! ! BK 1 2 3 CZ56 ! RD ! ! RD ! 1 2 3 CZ57 1 1 2 2 AC OUTLET 2?SWITCHED? OR 1 2 3 CZ54 ! ! OR C165 Transformer Blue Blue 1 2 3 4 5 CZ51 CON5 1 2 CZ52 CON2 1 2 3 4 5 CB58 CON5 1 2 3 CB53 CON3 DGND AC S1 V+ + AC S2 V- - D52 DB105 PGND C53 10uF/400V UV 1 BP 2 D 4 S 5 S 6 S 7 S 8 IC51 TNY274 C55 10nF/1KV R572 100K/1W D58 FR107/UF4006 T51 EE16 D59SR540 C58 0.1uF C54 330uF/10V IC53PC817 PGND C52 0.1uF/16V R570100 R571 510 DGND RL51 Relay-SPST D533 1N4148 C510 4N7/400V R5741K Q522 C1815 R5751K DGND +5.5V DGND C5111