DEC VR14 Operation & User’s Manual

46, CHAPTER 5 ENGINEERING DRAWINGS Each VR14/VR17 is shipped with a current set of engineering drawings. If any discrepancies exist between the schematics in this manual, and those delivered with the unit, the set of drawings shipped with the unit should …

12, 115~~ VAC I FROM THERMAL CUTOUT INPUT )>-------------, 1 115VAC POWER TRANSFORMER 115 VAC UNIT POWER RECTIFIERS + FILTER CAP. INTENSITY 0'>--------------....., l~tt~~IH 1 >- __________ ----I~L---__, POWER SUPPLY a REGULATOR BOARD GS36 THERMAL CUTO…

34, This chapter deals with the prevention, diagnosis, and repair of fault conditions. Successful troubleshooting of the VRI4/VRI7 can be performed using a volt-ohm- milliampere meter; however, an oscilloscope facilitates and expedites isolation and repair of faults…

39, DEC VR14 a. Remove circuit boards and the four 6-32 screws holding the deflection sink to the rear panel. b. Remove heat sink assembly (and its connectors if necessary) and remove faulty power transistor. Later models do not have the four BNC connectors at the top rear of the u…

22, 3.1 X- AND Y-DEFLECTION CIRCUITS The X- and Y -deflection circuits are identical; therefore, only one axis will be described. The deflection circuit consists of the A22S circuit board, two power transistors, and a deflection yoke (Figure 3-1). The input…