21GT-22
9-2
CONTRAST: MAX COLOUR: CENTER BRIGHTNESS: CENTER TINT: CENTER SHARPNESS: CENTER
the CONTRAST effect is OK or not.the COLOUR effect is OK or not.the BRIGHTNESS effect is OK or notin.for GREEN direction and DOWN for PURPLE direction whether is OK or not.the SHARPNESS effect is OK or not.channel number in green colour under AFT ON condition.key is pressed, all the settings will be present to normal setting. (Normal setting value for every mode).EEEEETEMP Option, STANDARD: NORMAL SETTING, WARM for more REDDISH direction changing, COOL for more BLUISH direction changing.
1.Receive "Monoscope Pattern" signal. 2.Set P-Mode to select CONTRAST. 3.Press Volume Up/Down key to check whether1.Receive "Colour Bar" signal. 2.Set P-Mode to select COLOUR. 3.Press Volume Up/Down key to check whether1.Receive "Monoscope Pattern" signal. 2.Set P-Mode to select BRIGHTNESS. 3.Press Volume Up/Down key to check whether1.Receive the "NTSC Colour Bar" signal thru AV2.Set P-Mode to select TINT. 3.Press Volume Up/Down key to check TINT, UP1.Receive "Monoscope Pattern" signal. 2.Set P-mode to select SHARPNESS. 3.Press Volume Up/Down key to check whether1.All Ch (1~99) will have an OSD display of the1.Once in PICTURE Mode, and the NORMAL1.Receive "Monoscope Pattern" signal. 2.Set FUNCTION to select WHITE TEMP. 3.Press Volume Up/Down key to check WHITE
CONTRAST keykeyKeyCOLOUR
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
NO.Adjustment partAdjusting procedure and conditionsWaveform and others12COLOUR key3BRIGHTNESS4TINT key5SHARPNESS6CH DISPLAY7NORMAL Key8White Temp
B
Fig. 1-1
CyGMgR
SAME LEVEL
Y
W
each short test.
*Select one of Q883/5/7 to do
(Use Probe 10:1)
.
9-1
Fig. 1-1
sec/div.
m
3 dB).
3 dB).?
?
Range: 100mV/div. (AC) Sweep time: 10
AV in.5) BLUE-OUT. EEAdjust the "SUB-TINT" bus data to obtain the waveform shown as short, make sure the protector ON and switch to standby mode.(R610 side).the protector is not work.the protector is work.testing in +B line, check all possible damaged components on +B line. (Use random selected set for inspection)White Color Bar, Sound 400 Hz 100% Mod).pedance. Make sure the output is as specified (1.0 Vp-p pedance. Make sure the O/P is as specified (1.76 Vp-p make sure that the modes change in order of TV, AV & TV again and the video & audio out- put are according to the input terminal for each mode.If connect input to Front and Rear AV terminal, input terminal of Front AV will be se- lected.
NTSC CHROMA ADJUSTMENT
1.Receive the "NTSC3.58 Colour Bar" signal thru2.Connect the oscilloscope to TP47B (P882 pin3.Call the "SUB-TINT" mode in service mode.4.Clear the SERVICE mode.1.Receive "Monoscope Pattern" signal. 2.Set CONTRAST MAX. 3.Set BRIGHT MAX. 4.During the Collector & Emitter of Q883/5/71.Receive "Monoscope Pattern" signal. 2.Connect output of Bias Box to D603 cathode3.Set voltage of Bias Box to 18V and make sure4.Set voltage of Bias Box to 27V, and make sure1.Once finish rectified Electrolytic Capacitor short1.Receive the "PAL Color Bar" signal (100%2.Terminate the Video output with a 75 ohm im-3.Terminate the Audio output with a 10k ohm im-1.Using the TV/AV key on the remote controller,
A/V INPUT AND OUTPUT CHECKING
PROTECTOR OPERATION CHECKING
2C BUS
(ICONTROL)PROTECTORPROTECTORprotectorsVIDEO AND AUDIOOUT- PUT CHECKAUDIO INPUT CHECK
1SUB-TINT1BEAM2H.V3Other12VIDEO AND
NO.Adjustment partAdjusting procedure and conditionsWaveform and othersNO.Adjustment partAdjusting procedure and conditionsWaveform and othersNO.Adjustment partAdjusting procedure and conditionsWaveform and others
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ACEC
