AudioResearch-Reference610T-pwr-adj 电路图 维修手册.pdf

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1、2. Attach supplied power cord to rear IEC inlet of amplifier, and plug other end into grounded A.C. power receptacle. 3. Turn on preamp and all other components; mute preamp output. 4. Turn Reference 610T front-panel control from Off to Operate; a two-minute mute/warm-up cycle will follow. 5. Select

2、 display function desired. 6. Unmute preamplifier output, initiate source component signal, and adjust gain as appropriate. Shut-Down: 1. Mute preamplifier output. 2. Turn Reference 610T front-panel control from either Operate or Standby to Off. 3. Turn off preamplifier and then the associated input

3、 source components. Bias Adjustment Procedure 1. Amplifier should be turned on and operating for at least 30 minutes before adjusting bias of output tubes. 2. Select bias level function in display screen using either front panel control or remote control. The 610T will mute. Display will default to

4、V1 location, showing bias level and instructions to adjust bias to 65mA. 3. Using supplied flat-bladed tool, insert into V1 pot open- ing on front panel and rotate until screen reads 65mA. 4. Using front-panel Bias knob or remote control, switch to V2 location and repeat adjustment procedure. 5. Che

5、ck bias level for all other output tubes (V3V16); each should measure in the range of 57mA to 73mA. If a tube persistently measures outside this range, it should be replaced. 6. Once tubes have been adjusted and checked for bias level, return display screen to Power Scale function and amplifier is r

6、eady to play. Note that if the bias level func- tion is addressed while the amplifier is in Standby, it is not possible to adjust bias; the display will simply read “NA”. The Reference 610T is shipped from the factory with all tubes properly biased and ready to use. It is not necessary to check bias

7、 each time the amplifier is turned on. Under typical circumstances, most owners will find that checking the bias level once a month or so will insure prop- er operation and good service life of the output tubes. Audio Research-supplied output tubes are warranted for 90 days, and under normal conditi

8、ons should provide up to 2000 hours of service life. This expected life will vary depending on conditions of useventilation, speaker loads, average playing level and A.C. voltage and line condition. Complete sets of replacement tubes or individual tubes are available from Audio Research, and are str

9、ongly recom- mended for best sonic performance and reliability. These tubes are burned in, measured, matched and specifically selected for your Audio Research amplifier. Contact your authorized dealer for suggested retail prices. Installation of Optional Tube Cover To install the optional fan-cooled

10、 tube cover, first align the front of the cover with the top front edge of the amplifier, making sure the fans are positioned at the rear. Note that there are five holes along the top edge of each side panel; these should match up with corresponding holes along the bottom side edges of the tube cove

11、r. Before settling and aligning the tube cover at the rear, insert the 12V D.C. plug attached to the fans into the 12V socket located at the back edge of the anodized top plate. Then secure and align the tube cover completely, insert supplied screws and tighten moderately. The high-quality 12V D.C.

12、fans are single-speed and are not adjustable. They operate at a speed selected to provide adequate cooling of the tubes with a minimum of air turbulence or noise. Servicing Because of its careful design and exacting standards of manufacture, your Reference 610T amplifier should normally require only

13、 minimal service to maintain its high level of performance. CAUTION: The Reference 610T amplifier contains suffi- cient levels of voltage and current to be lethal. Do not tam- per with a component or part inside the unit. Even with the power turned off, a charge remains in the energy storage capacit

14、ors for some time. Refer any needed service to your authorized Audio Research dealer or other qualified technician. Additional questions regarding the operation, maintenance or servicing of your amplifier may be referred to the Cus- tomer Service Department of Audio Research Corporation at 763-577-9

15、700 (CST). When ordering a service manual from Audio Research or an authorized dealer, be sure to identify the serial number on your amplifier. Cleaning To maintain the new appearance of this amplifier, occasion- ally wipe the front panel and top cover with a soft, damp (not wet) cloth to remove dus

16、t. A mild, non-alkaline soap solution may be used to remove fingerprints or similar smudges. Cleaners containing abrasives should notbe used as they will damage the anodized finish of the front panel. A small, soft paint brush is effective in removing dust from bevels, the recessed nameplate and other features of the front panel. Model Reference 610T 4 RadioFans.CN 收音机爱 好者资料库