Sanyo DP19649 Service Manual

Also see for DP19649 - 720p 18.5" LCD HDTV: Owner's manual Setup guide Owner's manual Service manual Service manual

Contents

NO. FUNCTION NO. FUNCTIONRead and perform these adjustments when repairing the 03 R DRIVE(N) 35 TINTcircuits or replacing electrical parts or PCB assemblies. 04 R CUTOFF(N) 36 SHARP H1 MAX05 G DRIVE(N) 37 SHARP H1 MINCAUTION 06 G CUTOFF(N) 38 SHARP H2 MAX07 B DRIVE(N) 39 SHARP H2 MIN• Use an isolation transformer when performing any 08 B CUTOFF(N) 40 SHARP H3 MAXservice on this chassis. 09 R DRIVE(C) 41 SHARP H3 MIN• When removing a PCB or related component, after 10 R CUTOFF(C) 42 SHARP H4 MAXunfastening or changing a wire, be sure to put the wire 11 G DRIVE(C) 43 SHARP H4 MINback in its original position. 12 G CUTOFF(C) 44 SHARP H5 MAX• When you exchange IC and Transistor with a heat sink, 13 B DRIVE(C) 45 SHARP H5 MINapply silicon grease (YG6260M) on the contact section 14 B CUTOFF(C) 46 SHARP V1 MAXof the heat sink. Before applying new silicon grease, 15 R DRIVE(W) 47 SHARP V1 MINremove all the old silicon grease. (Old grease may 16 R CUTOFF(W) 48 SHARP V2 MAXcause damages to the IC and Transistor). 17 G DRIVE(W) 49 SHARP V2 MIN18 G CUTOFF(W) 50 CONTRAST CENTERPrepare the following measurement tools for electrical 19 B DRIVE(W) 51 CONTRAST MAXadjustments. 20 B CUTOFF(W) 52 CONTRAST MIN29 BAK LIGHT CENT 53 COLOR CENTER1. Pattern Generator 30 BAK LIGHT MAX 54 COLOR MAX31 BAK LIGHT MIN 55 COLOR MINOn-Screen Display Adjustment 32 BRIGHTNESS CENT 58 CONTRAST 4033 BRIGHTNESS MAX1. Set the VOLUME to minimum. 34 BRIGHTNESS MINELECTRICAL ADJUSTMENTS1. ADJUSTMENT PROCEDURED-11. Set the VOLUME to minimum. 34 BRIGHTNESS MIN2. Press the VOL. DOWN button on the set and thechannel button (9) on the remote control for more than2 seconds to display adjustment mode on the screen as 2. BASIC ADJUSTMENTSshown in Fig. 1-1.2-1: WHITE BALANCE1. Place the set in Aging Test for more than 30 minutes.TV 2. Receive the gray scale pattern from the PatternFull Generator.480i 3. Press the INPUT SELECT button on the remote controlto set to the AV mode.4. Using the remote control, set the brightness andcontrast to normal position.03 R DRIVE(N) 5 5. Activate the adjustment mode display of Fig. 1-1 andpress the channel button (03) on the remote control toselect "R DRIVE(N)".Function 6. Press the CH. UP/DOWN button on the remote controlto select the "R CUTOFF(N)", "B DRIVE(N)","B CUTOFF(N)", "R DRIVE(C)", "R CUTOFF(C)","B DRIVE(C)", "B CUTOFF(C)", "R DRIVE(W)",3. Use the CH. UP/DOWN button or Channel button (0-9) "R CUTOFF(W), "B DRIVE(W)" or "B CUTOFF(W)".on the remote control to select the options shown in 7. Adjust the VOL.UP/DOWN button on the remote controlFig. 1-2. to whiten the R DRIVE(N), R CUTOFF(N),4. Press the MENU button on the remote control to end B DRIVE(N), B CUTOFF(N), R DRIVE(C),the adjustments. R CUTOFF(C), B DRIVE(C), B CUTOFF(C),5. To display the adjustment screen for TV, AV, R DRIVE(W) ,R CUTOFF(W), B DRIVE(W) andCOMPONENT, HDMI and PC mode, press the B CUTOFF(W) at each step tone sections equally.INPUT SELECT button on the remote control. 8. Perform the above adjustments 6 and 7 until the white6. Receive the DIGITAL broadcasting. color is achieved.7. To display the adjustment screen fo DTV mode, selectthe digital channel.8. Press the VOL.DOWN button on the set and the channel(9) on the remote control for more than 2 seconds.Step No.Fig. 1-1Fig. 1-2D-1