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Resumen del manual
There are no user serviceable parts inside. Refer servicing to qualified service personnel. Figure 1. Model A-2 front panel features. 14 16 18 17 19 Figure 2. Model A-2 rear panel features. 30 29 28 27 31 (XT PITT-INI ITT ,@®o® TAPE TRANSPORT ©¡j aOBflfl flg, 1 SECTION 1 FEATURE DESCRIPTIONS TRANSPORT 1. SUPPLY REEL TABLE AND REEL CLAMP The reel table accomodates 7” diameter reels. Place a reel on the table, and turn the clamp clockwise to secure the reel. 2. SUPPLY TENSION ARM AND TAPE GUIDE This arm and guide maintain stable travel on the segment of tape between the supply reel and the head assembly. When a reel of tape is threaded, the arm must be placed under partial tension, (caused to move upward from its fully extended position) before the transport will function. 3. SUPPLY IDLER ROLLER This roller establishes the proper angle for tape as it approaches the heads, ensuring correct wrap at the erase head. The roller also serves as a mechanical filter (it stabilizes the tape) to prevent flutter, 4. HEAD ASSEMBLY (HEAD STACK) Beneath the cover are located three heads, (a) a 2 track erase head, (b) a 2 track combination record/play head, and (c) a playback head. 5. CUE LEVER Pushing this lever toward the head permit monitoring of the recording in either fast forward or rewind mode by retracting the tape lifters and allowing tape to contact the playback head. CAUTION: To prevent possible damage to speakers (caused by a loud, high pitched squeal), be sure that monitor amplifier volume is reduced before actuating the CUE lever. Avoid continuous use of CUE; prolonged fast winding or rewinding with tape contacting the head can cause undue wear. 6. HEAD SHIELD A retractable gate is used to cover the playback head area, and should be up during playback. This shields the sensitive circuitry from stray hum and noise. This head shield can be retracted manually (for threading tape and editing) by pushing it down in the deck plate, where it locks in place. A second short push will release the shield, which then returns up to the extended position. 7. CAPSTAN AND PINCH ROLLER The capstan motor (beneath the deck plate) rotates at a constant speed whenever the unit is in play, edit/pi ay, or record mode. The pinch roller holds the tape against the capstan, pulling the tape past the head assembly at the set record/play speed. The record/play speed (capstan motor speed) is adjustable ±10% from the nominal 15 ips (38 cm/s) or 7-1/2 ips (19 cm/s) by means of the PITCH control [25]. 8. TAKEUP IDLER ROLLER This roller stabilizes the tape motion between the capstan/pinch roller assembly and the takeup tension arm. 9. TAKEUP TENSION ARM AND GUIDE This arm and guide maintain stable travel on the segment of tape between the capstan and the takeup reel. When a reel of tape is threaded, the arm must be placed under partial tension (caused to move upward from its fully extended position) before the transport will function. 10. TAKEUP REEL TABLE AND REEL CLAMP The reel table accomodates 7” (17 cm) diameter reels. Place a reel on the table, and turn the clamp clockwise to secure the reel. METER PANEL 11. POWER SWITCH Depressing this switch turns on the AC power, as indicated by the VU meter lights turning on. 12. VU METERS There are 2, illuminated VU meters, one for each track of the tape. Each meter will display the level at the corresponding channel line output; this level, in turn, is derived from either the input to the track, tape playback from the record/play head or the playback head. The actual output signal is determined by the position of the RECORD MODE and INPUT/ SYNC/REPRO buttons. 13. LED INDICATOR In the left corner of each meter is an LED indicator. When the LED is blinking, the corresponding track is in “record ready" mode. When the LED is on continuously, the corresponding track is in record mode. If the LED is not illuminated, the track may or may not be in safe mode; refer to Section 4 for details. CONTROL PANEL 14. TAPE INDEX COUNTER AND RESET BUTTON A 4 digit display indicates relative tape position (by means of a photointerrupter circuit on the transport supply spindle). Pressing the adjacent RESET button sets the display at 0000. To take advantage of the ZERO RTN function [24], it is recommended that the RESET button be pressed at the beginning of a “take.” 15. RECORD INDICATOR LED This LED blinks to indicate the unit is "record ready,” and turns on continuously when either track (or both) is actually recording. 16. RECORD MODE SELECTORS These two pushbuttons determine whether recording can commence on a given track. In the up position, that track will be in SAFE mode and no recording will occur. In the down position, that track will be in the record READY mode and the LED, in the left corner of the meter scale, for that track will blink. The specific function also depends on whether or not tape is stopped or is advancing in record ready mode, a) If tape is ...