14AP1
bBA = BBA = B
.
ey for 1
Fig. 4-2
Fig. 4-1Fig. 4-3
Rank "A" Rank "A"
aAA
(On the right of the CRT)(On the left of the CRT)
second in NORMAL MODE, the colour will change to RGB mono colour mode
* Press R/C RGB k
A.
?
ey to
2 kgf)
?
ver 500
ity magnet atard.Blue only
ws.
ocedureWaveform or others
or 30 minutes or
Aeep the static con-
Y signal. Adjust the ? 20 N (11 kgf 7-2ust be done after
?
. Adjust the landings to.
ver 500 . If not, stick the magnet sheetGreen onlySignal colour screen cleared
adjustment m
PURITY ADJUSTMENTwarming up the unit flonger with a beam current o
Adjusting conditions/pr
Red only
beam current to othe zero magnetic field and kvergence roughly adjusted.through the microscopethe A rank requirementsTightening torque: 108 N rank requirementsto correct it. Note:This change.
1.Receive the GREEN-ONL2.Degauss the CRT. Maintain the pur3.Observe the points a, b, as shown in Fig. 4-14.Orient the raster rotation to 0 eastw5.Tighten up the deflection coil scre6.Make sure the CRT corners landing meet the A*For the following colours press R/C RGB k
PURITY AD- JUSTMENT
1
No.Adjusting point
,
IF OUT
1000p75ohm.-1.5+/-0.8dB
V (75 ohm
1n60?
E-9 CH
1dB
?Fig.1Fig.2
V(75 ohm open), in-
10k100k?
P C
1dB
?
strength gauge, when not us- ing 50/75 impedance adaptersignal strength is 52stead of 57open).impedance adapter
OscilloscopeNote: For the 50 ohm signalPrecaution: The loss of using
V,
?
le to
um volt-
V
?W IMPED-aveform asV to be sure
TP201um voltage at?
ocedureWaveform or othersTV Set.
e the CH. E - 9 sig-
V (75 ohm open)TP201 (TunerOs AGC7-1
?
vice mode. Adjust the
minal. ( This terminal must
1 dB
ave detector ; see Fig.1 ) to?? Bias box: About 4.5 VFig. 3
+�
+�
PIF ADJUSTMENT
0.1V
Adjusting conditions/prBias box
Oscilloscope
during this adjustment.
nal, but with no signal input. Adjust the PLL data.the tuner antenna. ( RF SWEEP )ANCE probe with wthe tuner's IF output terhave the probe alone connected ).the waveform.shown in Fig. 2.Signal Strength: 57 Terminal) as shown in Fig. 3."AGC" bus data to get the maximTP201. Reduce 1 data from the maximage.and make sure there is no noisethat there is no cross modulation beat.
1.Get the tuner ready to receiv2.Connect the sweep generator's output cab3.Adjust the sweep generator's to 80dB4.Connect the response lead ( use LO5.Set the RF AGC to 0 - 6 V with no saturation with6.Adjust the tuner IF coil to obtain the wNote:Be sure to keep the tuner cover in position1.Receive "PAL COLOUR BAR" signal.2.Connect the oscilloscope to 3.Call "AGC" mode in ser4.Change the antenna input signal to 63~67dB5.Turn up the input signal to 90~95 dB
2C BUS
Tuner IFT ( PRESET )RF-AGC TAKE OVER POINT AD- JUSTMENT (ICONTROL)
12
No.Adjusting point
7 |
ACEC
