Panasonic TC-14Z88RQ Service Manual

Contents

Panasonic TC-14Z88RQ Service Manual Manual pdf 16 page image

http://202.224.189.179/viewing/OT/TC-14Z88RQ/SVC/s0205000000.html2.5 Adjustment ProcedureTOP PREVIOUS NEXTItem / Preparation Adjustment Procedure+B Voltage Confirm the DC voltage at the indicated test points, as follows :1. Operate the TV set. TPA 10 : 141.0 ± 2.0V2. Set control as follows : TPA 8 : 8 ± 1VBrightness ........... minimum TPA 9 : 5 ± 1VContrast .............. minimum TPA 21 : 175 ± 15RF AGC1. Receive a colour bar signal at an RFlevel of 69 +1-2 dBU with 75Ωloaded.1. Select “RF AGC” indication in CHK2, on Screen by remote control atfactory mode.2. Connect digital multimeter to RFAGC at Tuner.2. Set RF AGC by using remote control Volume (+) or Volume (-) button untilvoltage AGC at Tuner reaches 2.6 ± 0.1V at TPA 15 (Tuner point).3. Increase RF signal strength by 2dB, confirm AGC at Tuner voltage drop.High Voltage1. Receive the crosshatch pattern. 1. Connect a DC voltage meter to TPA 12 and confirm the +B voltage is 141.0± 2.0V.2. Set to 0 Beam.Screen VR .......... minimum 2. Connect a high frequency voltmeter to heater and confirm that voltage reads6.0 ± 0.24 (VRMS).Contrast .............. minimum3. Normalize the brightness and contrast.Item / Preparation Adjustment ProcedureNTSC TINT COLOURConnect a short jumper between TPA 10and TPA 20.Press Main Menu and set system to useAV-NTSC (3.58 MHz).DYNAMIC ................. NormalChannelCLR Set ..... STD1. Adjust Sub-Tint so that No. 2, 3 and 4 becomes level waveform is similar toFig. 3.2. Confirm phase at Tint is changes more than ± 30 by Tint control.http://202.224.189.179/viewing/OT/TC-14Z88RQ/SVC/s0205000000.html (1 of 2)10.02.2006 2:30:04