Panasonic AG-MD830E Service Manual

4-3-3. SLOW TRACKING ADJ.BOARD SERVO & SYSTEM CONTROL C.B.A.TP VIDEO OUTADJ FWD: VR2005(A·3), REV: VR2006(A·3}TAPE COLOUR BAR SIGNAL RECORDED TAPEINPUTMODE SLOW PLAY BACKM.EQ MONITOR TVSPEC NO NOISE BARNote: This adjustment should be performed onlyafter completion of 4-3-2. SLOW FREE RUNadj.1. Record the colour bar signal for a few minutes.2. Playback the recorded portion in still mode.3. Push the tracking button "+" and "_" at same time.4. Adjust VR2005 and VR2006 so that the noise bardose not appear and lower on the monitor TV.4-3-4. V-LOCK ADJ.BOARD SERVO & SYSTEM CONTROL C.B.A.TP VIDEO OUTADJ VR2004(A·3)TAPE BLANK TAPEINPUT COLOUR BARMODE STILLM.EQ MONITOR TVSPEC NO V-DANCINGNote: This adjustment should be performed onlyafter completion of 4-3-3. SLOW TRACKINGAdj.1 . Record the colour bar signal for a few minutes.2. Playback the recorded portion in still mode.3. Adjust VR2004 so that the V-dancing dose notappear and lower on the monitor TV.4-3-5. AUTO TRACKING GAIN ADJ.BOARD VIDEO 1 C.B.A.TP TP3005(D·3)ADJ VR3005(C·2)TAPEINPUT SINE WAVE (4MHz, 200mVp·p)MODE E·EM.EQ OSCILLOSCOPESPEC 2.5V ± O.1V[SET UP]S-VHS: OFFINPUT: LINE1. Set the sinewave generator output to 4MHz,200mVp-p.2. Supply the sinewave signal to TP3006.3. Connect the oscilloscope to TP3005.4. Adjust VR3005 so that the level is 2.5V ± 0.1 V.4-3-6. DOC BALANCE ADJ.BOARD VIDEO 1TP TP3001 (B· 1)ADJ VR3001 (E· 1)TAPEINPUT COLOUR BAR SIGNALMODE E·EM.EQ OSCILLOSCOPESPEC LESS THAN 50mVp·p1. Supply the colour bar signal to video input.2. Connect the oscilloscope to TP3001.3. Adjust VR3001 so that the video level becomesminimum as much as possible (Figure E2).TP3001(H.RATE)ifMINIMUMFigure E24-3~zw~t;::J-,Cet..JetUa:I-uw..Jw