User manual TECHNICS ST-G90

[. . . ] Immediately disconnect the power cord plug, and consult with your dealer. x · Place the unit where it will be weil ventilated, and away from direct sunlight Place this unit at least 10 cm (4") away Irom wall surfaces, etc. , and away Irom direct sunlight. · Connection and removal of the power cord plug 1. A dangerous electric shock may result il the plug is touched by wet hands. Always grasp the plug; never pull the cord itselt. x · Keep the unit away from heaters, etc. Heat can damage the external surfaces as weil as internal cir cuits and components. x · Never attempt to repair or reconstruct this unit A serious electric shock might occur il th is unit is repaired, disassembied or reconstructed by unauthorized persons, or il the inlernal parls are accidently touched. x · Avoid spray-type insecticides Insecticides might cause cracks or "cloudiness" in the cabinel and plastic parls ol Ihis unit. The gas used in such sprays might, moreover, be ignited suddenly. x · For families with children Never permit children to put anything, especially metal, inside th is unit. [. . . ] 'nyl-covered wire (option) Installalion of Ihe AM loop anlenna 1. · Do not attach it horizontally (to do so would impair recep tion). · Do not attach it close to metal surfaces (to do so would result in noise). · Do not attach it close to a tape deck (when the tape deck is being used, chirping or beeping sounds may be received). Connect the AM loop antenna to the AM 3ntenna terminals located on the rear panel of the unit. When attaching the antenna to a wal!, column or rack Find the height and direction of the anten na where reception is best and then fix it vertically to the wall, rack, etc. When attaching the antenna to the unit - - - , This type of installation may cause impaired recept ion or result in signa I noise. Move the anten na toward the right or left to find the point of best receptio . ll AM loop anten na (included) Column AM anten na holder (A) (included) J~ i6 , ", , ~. i _, . ~. I> AM loop antenna (included) -4 Front Panel Controls and Their Functions Power "stand by eb, on" switch This switch turns on and olf the secon dary circuit power only_ The unit is in the "stand-by" condition when this switch is set to the "stand by ó" position. Regardless ol the switch setting, the primary circuit is always "live" as long as the power cord is connected to an elec trical oullet. The indication AM used here includes both MW and LW tor Model sT·500L. I FM MW LW Band selectors (band) - - FM: Press th is button to listen to an FM broadcast. allocation: This bulton is also used to select a Ire quency step of either 9 kHz or 10kHz. When the AM button is pressed for about 4 seconds, the AM Irequency step wil! (This slep is set to 9 kHz belore ship men!. ) Sel to the appropriate posilion lor your locality. (Refer to page 5. ) Memory indicator 5 While the memory indicator is iIIuminated, press the button of the desired channel. When the button is pressed, the memory in dicator illumination will stop, and the preset ting is complete. 3 Press the appropriate tuning the desired broadcast. Tuning Press the left button to change the frequency downward, and press the right button to change the frequency upward · Automatic tuning Press the button. When the frequency indication begins to change, release the button (a broadcasting station will be selected automatically). · Manual tuning Press the button momentarily and tune to the desired station. The frequency will change each time the but ton is pressed. · To preset channels 1 through 8: Press the appropriate button momentari Iy, and then release. (Preset channel number is displayed on the channel display. ) · To preset channels 9 through 16: Press the appropriate button slightly longer, and then release. (preset chan nel number is displayed on the channel display. ) Note: If the memory indication illumination stops before you press the button, once again repeat step 4 and then step 5. 4 Press momentarily, and then (The memory indicator will illuminate for approx imately 4 seconds. ) 6 Enter the name (call sign, etc. ) of the preset broadcasting station on the station memory file sheet (page 8). This completes the procedures for presetting radio broad cast frequencies. The other preset-tuning buttons can be preset in the same way by following steps 2 through 6. Note: If the button is pressed continuously, the frequency will begin to change, and the memory will be preset automatically. To stop the automatic memory presetting, once again press either the "llP" button or the "down" but ton. -7 Listening to Radio Braadcasts Have you completed the memory presetting (page 6 and 7)? Important!-----------------. . If this anten na is not installed, AM broadcasts will not be received. AM loop antenna 1 Turn the amplifier on, and set it for listening to radio broadcasts. ) Select the desired station by using either the manual or preset·tuning buttons. For station setection using preset~tuning buttons · To select the front channels (CH 1 - 8): Press Frequency stored in the momentarily. [. . . ] Never use alcohol, paint thinner, benzine, nor a chemically treated cloth to clean this unit. I Technical Specifications (DIN 45 500) · FM TUNER SECTION · AM (MW) TUNER SECTION 522~1611 Frequeney range 87. 50~108. 00 MHz (0. 05 MHz step) Sensitivity 1. 5 J, N1750 (IHF '58) SIN 30 dB 1. 3 j. 1V (750) SIN 26 dB 1. 2j. 1V (750) SIN 20 dB 0. 9j. 1V (750) IHF 46 dB slereo quieting sensilivily 22 j. 1V/750 Tolal harmonie dislortion MONO 0. 15% STEREO 0. 3% SIN MONO 70 dB (78 dB, IHF '58) STEREO 65 dB (70 dB, IHF '58) Frequency response 20 Hz~15 kHz, -0. 5 dB~-1. 5 dB Allernale channel selectivity normal :::400 kHz 65 dB Capture ratio 1. 0 dB Image rejection at 98 MHz 40dB IF rejection at 98 MHz 70 dB Spurious response rejection at 98 MHz 70 dB AM suppression 55 dB Stereo separation 1 kHz 40 dB 10 kHz 30 dB Carrier leak 19 kHz -30 dB (-35 dB, IHF) 38 kHz -45 dB (50 dB. IHF) Channel balanee (250 HZ~'6, 300 Hz) . 5 dB Limiting point 1. 2 j. 1V Bandwidth IF amplifier 180 kHz FM demodulator 1000 kHz Antenna terminals 750 (unbalanced) Frequeney range Sensilivily (SIN 20 dB) Seleclivily (+9 kHz) Image rejeelion al 999 kHz IF rejeclion al 999 kHz 530~1620 kHz (9 kHz-steps) kHz (10 kHz-steps) 20 I. N, 3001. Nlm 55 dB 40 dB 60dB · LW TUNER SECTION (ST-G90 only) 155~353 kHz kHz (2 kHz shilt) 50 j. 1V 55 dB 40 dB 60 dB Frequency range 153~351 Sensitivity (SIN 20 dB) Selectivity at 254 kHz Image rejection at 254 kHz IF rejeetion at 254 kHz · GENERAL Output voltage 0. 3V (O. 6V, IHF) Power eonsumption 9W Power supply For Australia AC 50 Hz/60 Hz, 240V For continental Europe AC 50 Hz/60 Hz, 220V For others AC 50 Hz/60 Hz, 11 OV/127V1220V/240V Dimensions (WXHXD) 430 X 53 200 mm (16-15/16" X 2-2/32" X 7-27/32") Weight 1. 8 kg (3. 9 lb. ) Note: Total harmonie distortion is measured by the digital spectrum analyzer (H. P. 3045 system). 9 Troubleshooting Guide Belore requesting service lor th is unit, check Ihe chart below lor a possible cause ol the problem you are experiencing. [. . . ]