SLV-SE85/SF90/SF99

SECTION 6ADJUSTMENTSSLV-SE85/SF90/SF996-1. MECHANICAL ADJUSTMENTFor the mechanical adjustments, please refer to the“VHS MECANICAL ADJUSTMENT MANUAL (SMECHANISM)” (9-921-647-13)6-2. ELECTRICAL ADJUSTMENT2-1. PREPARATION BEFORE ADJUSTMENT2-1-1. Equipment RequiredThe measuring instruments used for this alignment include:1) Monitor TV2) Oscilloscope, dual-trace, bandwidth above 30 MHz with delaymode (Unless specified otherwise, use a 10 : 1 probe.)3) Frequency counter4) PAL pattern generator5) Remote commander6) Digital voltmeter7) Audio generator8) Audio level meter9) Audio attenuator10) Alignment tapeKRV-51NP (PAL) Part No.: 8-192-955-572-1-2. Equipment ConnectionUnless specified otherwise, connect the measuring instrument asshown in the following diagram.Pattern generatorVideo output(75 Ω)Monitor TVLINE-2 INVIDEOVCRLINE-1V OUT GND!ª !2-1-3. Setup for adjustmentBecause the video signal obtained from the pattern generator is usedas the adjustment signal for adjustments, the video output signalmust satisfy the given specification.Connect the oscilloscope to VIDEO LINE-2 IN terminal, and checkthat the amplitude of sync signal is approximately 0.3V, theamplitude of the video section is approximately 0.7V and theamplitude of burst signal is approximately 0.3V. And check that thelevel ratio of the burst signal to “red” signal is 0.30 : 0.66.The video signal used for adjustments is shown in Fig. 6-2-2.Fig. 6-2-2. Color Bar Signal of Pattern Generator2-1-4. Alignment Tape• Contents of KRV-51NP1234Approx. 0.7 VApprox. 0.3 VModeSPLPHorizontal sync signalPeriod7 minutes3 minutes7 minutes3 minutesWhite (100%)RedVideo signalColor barMonoscopeColor barMonoscopeBurst signal(Should be flat)Audio signalHi-Fi Normal400Hz(L/R)Approx.0.3 V400HzFig. 6-2-1.6-1