Harman Kardon Citation II Скачать руководство пользователя страница 33

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VOLTAGE AND RESISTANCE CHARTS

VOLTAGE READINGS

12BY7A 12BY7A 12BY7A 12BY7A 12BY7A 12BY7A

KT88/6550 KT88/6550 KT88/6550 KT88/6550

V10

150V

0.6V AC

110V

3.1V

150V

450V

1.5V

3.1V

1.5V

3.1V

450V

1.5V

3.1V

1.5V

3.1V

-50V*

3.1V

450V

160V

285V** 285V**

160V

285V** 285V

3.1V

210V

340V

210V

340V

1.5V

150V

―

NOTE:

Readings may vary ±20%.

All measurements to gnd. with VTVM―117 Line―No signal input. All voltages DC unless otherwise noted.
* Differences in these voltages are normal but cathode currents should be equal.

** These voltages will be equal with balanced tubes, but may differ without affecting performance.

RESISTANCE READINGS

12BY7A 12BY7A 12BY7A 12BY7A 12BY7A 12BY7A

KT88/6550 KT88/6550 KT88/6550 KT88/6550

V10

220 ohms

―

0.1 ohm 0.1 ohm 0.1 ohm 0.1 ohm

220 ohms

62 ohms 62 ohms 62 ohms

62 ohms

1 ohm 0.1 ohm 0.1 ohm 1 ohm 0.1 ohm 0.1 ohm 280 ohms 280 ohms 280 ohms 280 ohms

1 ohm 0.1 ohm 0.1 ohm 1 ohm 0.1 ohm 0.1 ohm

120K

0.1 ohm 0.1 ohm 0.1 ohm 0.1 ohm 0.1 ohm 0.1 ohm 20 ohms 20 ohms

20 ohms

16K*

15K**

16K*

15K**

15K** 0.1 ohm 0.1 ohm 0.1 ohm 0.1 ohm

39K*

22K*

39K*

22K*

15 ohms 15 ohms 15 ohms 15 ohms

220 ohms

―

NOTE:

Readings may vary ±20%.
* These readings are measured from B+

(

the Junction of L1 & C15

)

. All other readings to Ground.

** These readings are measured from B+ and depend on the position of the AC balance controls. They may vary ±25%.

Содержание Citation II

Страница 1: ......

Страница 2: ......

Страница 3: ...gh multiple loops HUM AND NOISE Better than 90 db below 60 watts POWER SUPPLY Close B regulation through use of low Z silicon diode rectifier power supply SENSITIVITY 1 5 volt RMS input for 60 watts S...

Страница 4: ...sparent sound Absolute stability with any load Output transformers designed specifically for this amplifier to exacting specifications High power output at the extreme ends of the range enables the am...

Страница 5: ...3 CITATION II CURVES...

Страница 6: ...4...

Страница 7: ...ency response to slightly above the limit of audibility it may have a tendency toward strident reproduction and poor differentiation of instruments in the high overtones Conversely an amplifier which...

Страница 8: ...IATELY IF A SHORTAGE OR ERRONEOUS PART IS DISCOVERED In the event of visible shipping damage notify your dealer at once If the kit was shipped to you notify the transportation company without delay Ha...

Страница 9: ...solder and hold the iron on the connection until the solder flows freely around and into the connection Merely melting drops of solder onto the connection is not satisfactory and will result in fault...

Страница 10: ...you should have difficulty with this kit and cannot resolve the problem through your own efforts write directly to us for advice Harman Kardon has established a special Citation service division to a...

Страница 11: ...stranded wire transformer leads etc should be twisted and tinned after stripping The amplifier is assembled and wired as four separate units Electrolytic Bracket Harness Terminal Boards Main Chassis A...

Страница 12: ...oard insulating sleeve at A Note orientation Twist tabs turn Insert the four silicon diodes into the clips on the holder T5 as shown in the pictorial It is imperative that the silicon diodes are insta...

Страница 13: ...o this hole and bend it over behind the jig to hold it in place If the wire has been accurately cut to size and properly inserted into the jig it will stay in place while the rest of the wires are ins...

Страница 14: ...the jumpers are screened on the board Wrap wire one full turn See Figure A Check TB1 TB2 10 NS to 11 S to 12 S 14 NS to 43 NS 45 S to 20 NS 42 NS to 23 NS 9 NS to 40 S to 28 NS 38 S to 29 NS 36 NS to...

Страница 15: ...own in Pictorial 3 Figure C Check TB1 TB2 Connect a 22 mfd 600V from 1 NS to 33 NS Connect a 47 mfd 600V from 14 S to 21 NS Connect a 22 mfd 600V from 15 NS to 19 S Connect a 47 mfd 600V from E 30 NS...

Страница 16: ...asher and nut supplied Install speaker terminal strip T1 and lug strip T3 Insert screw through T1 and install from outside of chassis Placing lockwasher on screw insert lug strip T3 as shown Install T...

Страница 17: ...Check Connect jumpers using bare wire from Terminal 1 S to Terminal 3 S on each of the miniature sockets V1 through V6 Connect a black 2 wire from P4 1 NS to P4 4 S Connect a 5 6K watt 10 resistor gr...

Страница 18: ...S Connect 120 ohm watt 10 resistor brown red brown silver between V7 2 S and V7 1 NS Connect a brown wire 8 long between V7 1 S and P2 2 NS Connect a 33 ohm watt 20 resistor orange orange black betwee...

Страница 19: ...Connect black wire from power transformer to fuse holder F2 S Connect black white wire to AC 2 NS Slip large rubber grommet over all remaining leads coming from power transformer See Pictorial 6 Conn...

Страница 20: ...18...

Страница 21: ...19...

Страница 22: ...bare wire from T2 G S to T4 2 NS Connect a 039 mfd capacitor marked on body from T4 1 NS to T2 16 NS Connect a 39 ohm 1 watt 10 resistor orange white black silver from T4 2 S to T4 1 S Insert line co...

Страница 23: ...tion Tighten standoffs to chassis Position harness and board leads as per Pictorial 6 prior to mounting boards Starting with right terminal board TB1 Channel B connect the following see Pictorial 8 Co...

Страница 24: ...l board TB2 10K watt 10 brown black orange silver from V10 5 S to TB2 1 S 10K watt 10 brown black orange silver from V9 5 S to TB2 15 S Blue 2 long from V9 3 S to TB2 16 S Blue 2 long from V10 3 S to...

Страница 25: ...ohm 2 watt 10 resistor yellow violet red silver from V5 7 S to TB2 33 S Connect a 33K watt 10 resistor orange orange orange silver from V4 2 S to TB2 27 S FINAL WIRING OF THE TERMINAL BOARDS Refer to...

Страница 26: ...80K ohm 1 watt 10 resistor blue gray yellow silver from TB1 6 NS to TBl 37 NS 4 7 mmf condenser value marked on body of capacitor from TB1 6 S to TB1 37 S 220 ohm 12 watt 10 resistor red red brown sil...

Страница 27: ...is point you may assume that the power supply has been correctly wired and that the KT88 6550 output tubes are being biased IF THE METER DEFLECTS BEYOND THE BIAS MARK OR IF THERE IS NO DEFLECTION AT A...

Страница 28: ...Channel B A C Balance position Allow sufficient time for the 16 ohm 20 watt load resistor to cool and disconnect from the channel A speaker terminal Connect the load resistor to Channel B speaker term...

Страница 29: ...27...

Страница 30: ...ere the readings fail to correspond 6 Check all resistors and condensers with an ohmmeter where the improper operating voltages are noted 7 If you cannot find the difficulty write to Harman Kardon Inc...

Страница 31: ...ipulate the input connections while the amplifier is powered This may re sult in permanent damage to your speakers CONNECTING THE AMPLIFIER FOR 120 WATT MONOPHONIC OPERATION WITH SINGLE SPEAKER In ord...

Страница 32: ...ed with a chemical compound called PERMAFIL which is specifically selected because of its high heat conductivity PERMAFIL carries the heat away from the core and the winding to the outer can where it...

Страница 33: ...are normal but cathode currents should be equal These voltages will be equal with balanced tubes but may differ without affecting performance RESISTANCE READINGS 12BY7A 12BY7A 12BY7A 12BY7A 12BY7A 12B...

Страница 34: ...sulator Single STCOM4127 1 Phono Jack Insulator Double Z1021705 1 Ground Lug STCOM2707 2 Speaker Terminal Strip HC24625 1 AC Outlet HCCOM3750 1 Fuse Holder with nut lock and rubber washer ZCOM3715 1 F...

Страница 35: ...ng head self tapping screw KW6 SN 7 6 x O D x 1 32 THK Flat Washer KM8 32 6SB 2 8 32 x Lg B H M S binding head machine screw KS8 SC 2 8 Split Lockwasher KN8 32SC 2 8 32 Hex Nut KN10 32SC 12 10 32 Hex...

Страница 36: ...blue red silver RA103 1 8 10K ohms watt 10 brown black orange silver RA123 1 2 12K ohms watt 10 brown red orange silver RA223 1 2 22K ohms watt 10 red red orange silver RA333 1 2 33K ohms watt 10 oran...

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Страница 38: ...36...

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