Shure PM300 SERIES Servisní příručka

VA302 SERIES @hfd(>M&fih OPERATING AND SERVICE MANUAL Manufactured by SHURE BROTHERS INC. 222 Hartrey Avenue Evanston, Illinois 60204 U.S.A

It should be noted that operation of the Console with the meter reading into the red portion of the scale does not indicate any type of overlo

resistance pad (attenuator) will be required in the line from the Console to the echo device input. If the echo device in- put is suitable for only hi

Adjust the Echo Gain control and the mixer volume con- trols to matcti the gain of the Console inputs. With the mixer connected in this confi

Set the controls on the second Console as follows: Anti Feedback'Switches to "Out," Master Reverb Switch "Out," Individual V

FIGURE 11. INDIVIDUAL JACK SWITCH REVERB SWITCH OPERATES WHEN PLUG IS INSERTED IN , 1508 ATTEN WPUT BASS& IND -:-I OUT -TREBLE CONT'

FIGURE 12. Driver Transistors: The driver transistors Q33 and Q34, Figure 12, Page 15, are located on the amplifier chassis. Before removing these tr

FIGURE 13. Small Signal and Predriver Transistors: FIGURE 14. Check Transistors and Diodes: Transistors Q1 through Q30, Figure 14, Page 16, and Q31 an

If all conditions in the following table are met, the tran- Lamp Replacement: sistor may,be considered free of any gross defect; if any of the follow

VA300-S Speaker Servicing: 1. Unplug cables from speaker jacks. 2. Using an ohmmeter, measure the resistance of the speaker column. The resis

REPLACEMENT PARTS LIST FOR VA302-C SERIES CONSOLES Capacitor, 2500 x 100 Capacitor, 4000 x 60 Silicon Rectifier, 3A., 200 V. Zener Diode, 22V,,

VA302 Series Vocal Master SPECIFICATIONS VA302 Series Console Amplifier Type ... .All silicon transistor mixer/power

Notes to Circuit Diagram D.C. Voltage Measurements: Check the DC voltages first, because any deviation from the nominal voltages will affect the AC v

I VA302-C CIRCUIT DIAGRAM I FIGURE 17.

VA302E-C POWER SUPPLY CIRCUIT DIAGRAM FIGURE 18. VA302E6-C POWER SUPPLY CIRCUIT DIAGRAM Eil(- 120 VOLT POWER SUPPLY WIRING THERMAL OVERLOAD

Console (Continued) ... power Supply: VA302-C ,120 volts, 60 HZ. VA302E-C ...

FIGURE 1. 6, Individual Channel "Treble & Bass" Controls Front Panel Controls (Refer to Figure 1) (Six, Dual Concentric). 1. "Anti

General Operating Instructions: 1. Set all front panel controls in the following manner: All switches (I), (4), (7), set to "Out" positi

lnput Connections: Six individugl input connectors are provided on the rear panel of the Console. These connectors are professional 3-pin female

The following list shows various speaker combinations and the resultant impedance loads which are suitable for use with the Vocal Master Console:

VA302 Power Requirements: The ~~302-6 Vocal Master is furnished with a three con- ductor power cable and three-prong plug. Connect the power ca

If feedback occurs, locate the one Anti Feedback switch (1) which eliminates the feedback. Gain may then be in- creased or tone control increased