21XF30
21XF50
Fig. 10
Waveform and othersWaveform and othersWaveform and others
each short test.
SAME LEVEL* Select one of Q883/5/7 to do
W Y Cy G Mg R B
t,t,
TV,
ave-
e sureWhite
vice mode. Ad-witch to standbyminal for each
TP853 (Pin (5) of
x to D607 cathode
or inspection)11-2
attern" signal.attern" signal.x to 18V and makx to 27V, and make sure.
us data to obtain the work.
sec/Div.
m
.ork., check all possible damagedsure the output is as specified
100mV/Div. (AC)(Use Probe 10:1)
sure the output is as specified (1.0?3 dB).
3 dB).
Adjusting procedure/conditionsAdjusting procedure/conditionsAdjusting procedure/conditions?
Range: Sweep time: 10
NTSC CHROMA ADJUSTMENTthrough AV in.P882) BLUE-OUTEEjust the "SUB-TINT" bform shown as Fig. 11.make sure the protector ON and smode.(R606 side).the protector is not wthe protector is wtesting in +B linecomponents on +B line(Use random selected set fColor Bar, Sound 400 Hz 100% Mod.)ance. Make Vp-p pedance. Make (1.76 Vp-p make sure that the modes change in order of AV1, AV2 & TV again and the video & audio out- put are according to the input termode.
1.Receive the "NTSC3.58 Colour Bar" signal2.Connect the oscilloscope to 3.Call the "SUB-TINT" mode in ser4.Clear the SERVICE mode.1.Receive "Monoscope P2.Set CONTRAST MAX. 3.Set BRIGHT MAX. 4.During the Collector & Emitter of Q883/5/7 shor1.Receive "Monoscope P2.Connect output of Bias Bo3.Set voltage of Bias Bo4.Set voltage of Bias Bo1.Once finish rectified Electrolytic Capacitor shor1.Receive the "PAL Color Bar" signal (100% 2.Terminate the Video output with a 75 ohm imped-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
SUB-TINT (I2C BUS CON- TROL)BEAM PRO- TECTORH, V PROTEC- TOROTHER PRO- TECTORVIDEO AND AUDIO OUTPUT CHECKVIDEO AND AUDIO INPUT CHECK
112312
No.Adjusting pointNo.Adjusting pointNo.Adjusting point
Fig. 9
Cy GB
Waveform and othersWaveform and others
WY 100%W Mg R
75%
.
ocusing.
vel in (4).
mal condition.
11-1
sec/Divus data, so that the 75%
m
(Using 10:1 Probe)OSUB-COL� in SERVICE mode.
tions of PAL Color Bar be at the
FOCUS ADJUSTMENT
Adjusting procedure/conditionsAdjusting procedure/conditions
Range :20 V/Div (AC)Sweep Time :10
PAL CHROMA ADJUSTMENT
Adjust SUB COLOUR bWhite & Red porsame level shown as Fig 10.
1.Receive the OMonoscope Pattern� signal. 2.Press R/C to set Picture NORMAL condition. 3.Adjust the focus control to get the best f1.Receive the OPAL Color Bar� signal. 2.Press R/C to set Picture Nor3.Connect the oscilloscope to Red cathode4.Using the R/C call 5.Add another 6 STEP from the same le6.Clear the service mode.
FocusSUB COLOUR (I2C BUS CONTROL)
11
No.Adjusting pointNo.Adjusting point
11 |
ACEC
