Harman-Kardon-CA-260-Service-Manual(1) 电路图 维修手册.pdf

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1、G. Tannenbaum Electronic Service Data P.O. Box 386/Ambler PA 19002 Phone 215 657 0106 Fax 215 657 0520 Web Page harman/kardon MODEL CA-260 CAR AMPLIFIER RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 The Harman Kardon 3 7 Model CA260 Manual No.74A HIGH FIDELITY CAR AM PLIFIER DlJ mJ 0 1RUTI mJ QJJ

2、harman / kardon 240 CROSSWAYS PARK WEST, WOODBURY. N.Y. 11797 1112.H15274A8 P.08846 1650 PRINTED IN JAPAN RadioFans.CN 收音机爱 好者资料库 I Power Output, RMS : 60 watts per channel into 4 Ohms, 20 20,000Hz : 90 watts per channel into 2 Ohms, 20 20,000Hz : 180 watts bridged mono into 4 Ohms, 20 20,000Hz HCC

3、(High Instantaneous: :t 30A Current Capability) THD Negative Feedback Power Bandwidth Frequency Response Signal-to-Noise Ratio I nput Sensitivity Line Level High Level : No more than 0. : 25dB : 10Hz to 100000Hz : 10Hz to 100,000Hz : 80dB + 0 , - 3dB : 0.25V 10.8V (switchable) : 3V Active Crossover

4、Characteristics High Pass : 200Hz, 12d B/Octave Low Pass : 200Hz, 6dB/Octave Power Supply : DC + 13.8V (11 16V usable), negative ground Typical Input Current Requirements At Idle : 2. Full Power Music Signal: 6.7 A (4 Ohms/ch. : lOA (2 Ohms/ch. Full Power Sine Wave : 20A (4 Ohms/ch. : 30A (2 Ohms/ch

5、. Dimensions (W x H x D) : 15-5/8x3-7/8x7-1/8 (396 x 98 x 180 mm) : 101bs. 20z (4.6kg) Weight All specifications and features subject to change without notice. DISASSEMBLY PROCEDURES (REFER TO PAGES 4 AND 10) Note: When replacing parts, discharge by shorting between terminals of the capacitor (C51,

6、C52) at the power source with 8D 1O0W resistor as it may have charge accumulated. IIJ CABINET BOTTOM ASSEMBLY (101) REMOVAL Remove 7 screws and remove the Cabinet Bottom Assembly (101). IZJ MAIN P.C. BOARD (PCB-1) REMOVAL 1. Remove the Cabinet Bottom Assembly (101). (Refer to step rn . 2. Remove 9 s

7、crews fY and remove the Main PC. Board (PCB-l) with Cabinet Back (142), Line Input P Board (PCB-2), Bridged-Mono Switch PC. Board (PCB-3) and terminals (TEl and TE2). 3. Unsolder the lead wires from the Line Input P Board (PCB-2) and Bridged-Mono Switch P.C. Board (PCB-3) and remove the terminals (T

8、El and TE2) by unsoldering. 4. Remove 2 screws and remove the Cabinet Back (142) with the Line Input PC. Board (PCB-2), Bridged-Mono Switch PC. Board (PCB-3) and ter- minals (TEl and TE2). PROTECTION CIRCUIT If the temperature inside the CA260 rises above 80 the protection circuit comes into operati

9、on, decreasing output. At this time the protect indicator blinks. If the temperature comes back below 80 C by natural cooling, output returns as it was. If the temperature rises above 100 , the power supply circuit is shut off. Not only does the output stop, but also the protect indicator goes out.

10、If this happens, it is possible that the CA260 is broken. However, even in this state, it cannot be always said that it is broken because the unit may operate when the temperature comes back below 80C by natural cooling. POWER SUPPLY P.C. BOARD (PCB-4) REMOVAL 1. Remove the Cabinet Bottom Assembly (

11、101). (Refer to step rn . 2. Unsolder the lead wires from the Power Transformer (Tl ). 3. Remove 7 screws C!) and remove the Power Supply C. Board (PCB-4) with the Cabinet Back (143), Fuse with Holder (Fl), Insulator (186) and terminal (TE3). 4. Remove the terminal (TE3) by unsoldering. 5. Remove sc

12、rew C) and remove the Cabinet Back (143) with Fuse with Holder (Fl), Insulator (186) and terminal (TE3). At this time, disconnect the connector from Fuse with Holder (F 1). 141 POWER TRANSFORMER (T1) REMOVAL 1. Remove the Power Supply PC. Board (PCB-4). (Refer to step . 2. Remove 4 screws () and rem

13、ove the Power Trans- former (T1). ToSw;tch;ng 03 : -Q -,0,-.2 _138V PROTECT D W i- I ; Jrl i. ALIGNMENT PROCEDURES (REFER TO PAGES 9 AND 10 ) -Idling current adjustment Conditions: -Connect the DC voltmeter between TPl and TP2 and between TP3 and TP4. -Connect a 13.8V power supply to the 12V Battery

14、 Power In terminal. -After the power on, wait for 5 minutes before measur- ing to be sure of the most stable operation. Inspection: -Confirm that the idling current is 50mA :t 20mA (voltage: 33mV:t 13mV). If the current measured does not fall within the range specified, adjust it with the procedure

15、below. Adjustment Note: When replacing or disconnecting a resistor, disconnect the power supply first. CurrentVoltage Procedure less than 29mAless than 19mVAdd R481 and R482 between TP5 and TP6 and between TP7 and TP8. 71mA 100mA46mV 66mVAfter cutting out R477 and R478, add R481 and R482 between TP5

16、 and TP6 and between TP7 and TP8. 101mA 200mA67mV 132mVAfter cutting out R479 and R480, add R481 and R482 between TP5 and TP6 and between TP7 and TP8. 201 mA 250mA133mV 165mVCut out R477 and R478. more than 251 mAmore than 166m VCut out R479 and R480. After the adjustment is complete, let the unit s

17、ettle down for 10 minutes, than double-check that the idling current is set properly. BLOCK DIAGRAM AMPLI FIER Line Input Output High Level Input Input Select Switches FILTER POWER AMP High/Low Pass Fi Iter Switch Input Select Line Input Switches Output FILTER POWER AMP POWER SUPPLY +13. Switching C

18、ircui t + 31.0V Remote - 31.0V + 35.5 V GND - 35.5 V Protect Signa! Input -0 GENERAL UNIT EXPLODED VIEW GENERAL UNIT PARTS LIST Ref. No. 101 102 119 120 121 122 123 124 125 129 130 142 143 145 147 154 155 156 157 158 159 161 162 163 164 165 166 167 169 170 171 174 175 176 177 179 180 181 183 184 185

19、 186 191 192 193 194 202 250 301 302 303 304 305 306 Part No. A424-CA260A B222-CA260A 2310-7028 2346-501641 2440- 70 1 8 2412-5042 2414-504 2557-401649 2440- 7019 2218-7035 2218-7036 1424-12101 1424-12201 1443-07701 1662-05002 2112-11768 2132-7118 2132-7119 2132-7120 2132-7123 2132-7124 2219-7965 22

20、19-7966 2219- 7967 2219-7968 2219- 7969 2219-7971 2219-7972 2219-7994 2219-7995 2219-7998 2222- 71 58 2222- 71 59 2222- 7160 2222- 7161 2222- 7163 2222- 7106 2222- 7168 2224-7092 2224- 7093 2224-7094 2224- 7098 2240- 7120 2240- 7220 2240- 7224 2240- 7225 2440- 7016 2114-YC40B 2347-3006K7 2347-301026

21、 2347-300627 2347-300626 2347-301227 2557-301229 ll11-J30179 llll-J30180 1756-09901 1221-717169 1222-7267 1222- 7268 I Description Cabinet Bottom Assembly Heat Sink Assembly, Right Hexagon-Head Bolt Hexagon-Head Tapping Screw Hexagon Nut Spring Washer Toothed Lock Washer Bolt Hexagon Nut Bracket Bra

22、cket Cabinet Back Cabinet Back Front Panel Push Button, Filter Switches Sponge Spacer Spacer Spacer Spacer Spacer Bracket Bracket Bracket Bracket Bracket Bracket Bracket Bracket Bracket Bracket Heat Sink Heat Sink Heat Sink Heat Sink Heat Sink Heat Sink Heat Sink Insulator Insulator Insulator Insula

23、tor Holder Holder Holder Holder Special Nut Bushing Self-Tapping Screw (+) (3 x 6mm) Self-Tapping Screw (+) (3 x 10mm) Self-Tapping Screw (+) (3 x 6mm) Self-Tapping Screw (+) (3 x 6mm) Self-Tapping Screw (+) (3 x 12mm) Screw with Washer (+) (3 x 12mm) Owner Guide (for U.A. model) Owner Guide (for Ge

24、neral :;, TE1 HIGH LEVEL INPUT R505 560R523 35. R ch R99 SWI SW2 SW3 SW4 C79 O/25V $ C77 47/25V FiI, ON/OFF H;gh Po35/Low Po Flit., B;dge-Mona Line op, Sen5;,;vlty . C78 47/25V .,. cao 0/25 V r. - R539 C504 25V R 506 560 I L -, l!:. C516 *0. lei MN40llB IC 4 MN4027B 3-9 RII IOOOP lei MN40llB PT2 SWI

25、TCHING TRANSISTOR SENSOR R457 220K C421 R69 Q401 2sel7751FJTE2 C401 /50V R4I3 Q407 2sIC2603(E) o,F) :sO :. :so Q402 2Sel775(FJ C402 66/50V R458 220K g Q408 2SC2603 E)o,F) D408 HZI2B-2L 3t, 3tOV PROTECT NOTES 1. ALL RESISTANCES VALUES ARE IN D. KD = 1 OOO MD = 1000KD. 2. THE WATTAGE OF RESISTORS IS 1

26、/4W UNLESS OTHERWISE NOTED. 3, ALL CAPACITANCES VALUES ARE IN /IF UNLESS OTHERWISE NOTED, P=/l/lF 4. V: DC VOLTAGE AT NO SIGNAL 5. SAFETY-REQUIREMENTS COMPONENTS IN ACCORDANCE WITH PRESENT SAFETY ill REGULATIONS, THESE COMPONENTS MUST ONLY BE REPLACED BY ORIGINAL PARTS. f,. The Harman Kardon Model C

27、A260 HIGH FIDELITY CAR AMPLIFIER Manual 74C SUPPLEMENTARY MANUAL MODIFICATIONS WERE MADE AT SERIAL NUMBER 9008201 TO IMPROVE PERFORMANCE. EXCEPT FOR THE CHANGES AS NOTED IN THIS SUPPLEMENT, REFER TO MANUAL 74A AND 74B FOR ALL OTHER PARTS AND SERVICE INFORMATION. SPECIFICATIONS : 60 watts per channel

28、 into 4 Ohms, 20-20,000Hz : 90 watts per channel into 2 Ohms, 20- 20000Hz : 180 watts bridged mono into 4 Ohms, 20- 20000Hz HCC (High Instantaneous: :I: 30A Current Capability) THD (4 Ohms/2 Ohms) Negative Feedback Power Bandwidth Frequency Response Signal-to-Noise Ratio Input Sensitivity Line Level

29、 High Level Power Output, RMS : No more than 0,1 %/0. : 25dB : 10Hz to 100000Hz : 10Hz to 100,000Hz + 0, - 3dB : 80dB : 0.1 V /0. 5V (switchable) : lV Active Crossover Characteristics High Pass : 200Hz, 12dB/Octave Low Pass : 200Hz, 6dB/Octave Power Supply : DC + 13.8V (11 - 16V usable), negative gr

30、ound Typical Input Current Requirements At Idle : 2. Full Power Music Signal: 6.7A (4 Ohms/ch. : lOA (2 Ohms/ch. Full Power Sine Wave: 20A (4 Ohms/ch. : 30A (2 Ohms/ch. Dimensions (W x H x D) : 15-5/8 x 3-7/8 x 7-1/8 (396 x 98 x 180 mm) : 101bs. 20z. (4.6kg)Weight Specifications and components subje

31、ct to change without notice, Overall performance will be maintained or improved, I Description ELECTRICAL PARTS LIST Ref. No, I Part No. R419,420 R421, 422 RESISTORS 5174-393381 5174-221381 39kO, :I: 1 %, 1/4W, Metal 2200:I: 1 %, 1/4W, Metal C405, 406 CAPACITORS 5345-477C0952470F, :1:20%, 16V, Elect

32、rolytic 040 041 TRANSISTORS 5613-3422(0) 5611-1359(0) 2SC3422(0) or 2SC3422(Y) 2SA 1359(0) or 2SA 1359(Y) C519, 520 C521, 522 CAPACITORS 5359-4715851 5359-2715851 470pF, :1:5%, 100V, Polypropylene 270pF, :1:5%, 100V, Polypropylene harman/kardon 240 Crossways Park West, Woodbury, 11797 l112-H15274C P

33、-088511 1650 PrintedlnJapan WIRING DIAGRAM IpCB-11 BLK C429 SW2 SVfI HIGH PASS- LOW PASS - 0 FILTER SPEAKER SYSTEM TE2 HIGH LEVEL INPUT TE1 SW4 LINE INPUT SENSITIVITY LINE INPUT J2 L J 1 OFF SW3 BRIDGE MONO PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS. 28C224028C260328C287728B646 28C334528C

34、2626182473 HZ9B-2L MV104VGL5HD10PB101 28A97028A 11152SA28D666 28C259128C3182HZ15-2L AGL5HY10 25C177528D669 QI2SA122SA 10DF2 28A999L28B64928C3246HZ12B2L 28C2320L182471 EROCO1 02F ,. DIODE Anode C BC E C E HZ6A-AnodeCathode -:;:; , FI30A SYSTEM POWER eLK eLK eLK eLK GND +8 REMOTE 12V BATTERY POWER TE3

35、 PB101FMN4011 B M5223P MN4 Anode 14 -WIRE COLOR ABBREVIATIONS RED: Red ORG : Orange BLU : Blue WHT : White GRN : Green BLK : Black VEL: Yellow PUP: Purple PIK : Pink PROTECT IND. POWER IND. PT2 : : C:;: - J- R457 220K reV) 3S. R99 92L 32L 1217(O) I I or(Y) 1006 -3S. . L -, 31.0V (jJ C51 10000/Sov (j

36、J C52 10000 /50V 1-31.ov . 35. C53 17/50V C 54 / 17/50V -35. PROTECT R48 10K R49 10 K ,:.c R458 220K C421 R405,2 R407 1.5K1.5K R69 Q31 2SC2240( BL) ore GR) L405 C401 /50V R469 22 low) R47t 22 lOW)R475 OW) R413 22 K R473 OW) C419 0.033 Q407 2sIC2603(E) or(F) C411 22/50V (jJ Q39 SAI1I5(E) / or(FJ 4,6V

37、 R76 R432 22K R82 47K 35, C422 0, 31.OV D414 Q402 2SC2240 C402 (BL) 6S/50V 13) Q404 2slc2240(BL) L406 R470 22 lOW) R4722210WJ.(;:R476 OWl R474 OW) C41S 5 P R440 12KC420 0.033 Q408 12.4V 2SC2603 R416 (EJor(F) 560 R426 -13:9iNv- R41S . D408 HZI2B2L 34. C424 -31, 31.0V 1, ALL RESISTANCES VALUES ARE IN.

38、!1. K.!1=1000.!1, M.!1=1000K.!1. 2. THE WATTAGE OF RESISTORS IS 1!4W UNLESS OTHERWISE NOTED, 3. ALL CAPACITANCES VALUES ARE IN J.lF UNLESS OTHERWISE NOTED. P=J.lJ.lF 4, V: DC VOLTAGE AT NO SIGNAL 5, SAFETY-REQUIREMENTS COMPONENTS IN ACCORDANCE WITH PRESENTSAFETY ill REGULATIONS, THESE COMPONENTS MUS

39、T ONLY BE REPLACED BY ORIGINALPARTS. TE2 SPEAKER e SYSTEM (3;) R , ,-. :, SCHEMATIC DIAGRAM J 1 L ch r-. R515 R535C503 C513470 10/25V Q501 01 2SA999L(F) R519 330 R521 lOOK 5W25WI R507 R517R537 470 R505 C515 560R523C517 0, O LINE INPUT Rch L ch TE1 HIGH LEVEL INPUT 13, 14.5V R53 lOOK t4, R ch C79 220

40、/25V SW I Filter ON/OFF SW2 High Poss /Low Poss Filter SW3 Bridge-Mono SW4 Line Input Sensitivity C80 220/25 V 14. R539 r.- L_- C504 10/25V (!) R520 330 SW3 R508 R538 470 C518 I 0, L_- R 506 560 R 524 r-: 110 13. lC1: TC40llBP R 15 22011/2W) IC 4 TC4027BP 3-9 RIIRI2 R53 (1/2W) 100/25 C I 1000P 152473 33 K R23 10 K ICI:TC40IlBP I C I C 12 200P R24 R25 180K 15K R I IC I : TC4011 BP IC3: TC4069)JBP IC 3 TC4069)JBP IC5: M5223P CI4 R30 lOOK PT I IC2: TC401lBP E!J C 3V 1- :J GND +8 REMOTE