TM 5-6675-319-14(4) The +10 kV power supply is not field-repairable and must be replaced asa u n i t .It is located at the bottom rear of the printer subassembly. The high-voltage box, located in the front of the printer subassembly, has the followingadjustments:Accelerating anode calibration adjust R120 is used to adjust for thepresence of light on the CRT.Focus control adjust R123 adjusts for fine rasterl i n e s .Focus calibration adjust R124 (factory set) is used to adjust raster linesu n t i l t h e y t o u c h.Beam current adjust R23, located on card 3CC1, is used to controlthe CRT beam current, normally 200-250 MA, in the test mode.(5) PMT digital meter M101 is used to monitor the PMT current when cali-brating in the test mode for density of printing material. PMT SENSITIVITY adjustR106 is used to adjust PMT current to -50µA.(6) The test mode of operation is selected by setting MODE switch S103 toTEST. The test mode is utilized when setting the printer up for various printingoperations and testing .In the test mode, the PMKT output is not used to drive thefast axis sweep.The PMT output is applied to PMT digital meter M101 to set PMTs t a t i c c u r r e n t .The fast axis sweep is driven by a gating circuit, consisting ofQ3, Q4, and associated circuitry, on card 3C2.The gating circuit supplies a fixedcurrent of -50µA to drive the fast axis integrator and causes the spot to sweep theCRT at a higher fixed rate.In TEST, MODE switch S103 applies -12.5 V to the output9-16
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
