15E1-FRU
bA = BA = B
ABAB
Fig. 1-1Fig. 1-2Fig. 1-3Rank "A"
Rank "A"
a
Waveform and others(on the right of the CRT)(on the left of the CRT)
in NORMAL MODE, the colour will change to RGB mono colour mode. The TEXT Key "R. G. Cy" Key can be directly use to change to other colours screen.
*Press R/C RGB key for 1 second
Fig. 1-1
Red-only
Adjust the landings7-2Y signal. Adjust the
T corners landing meet the
T enough with the degausingBlue-only
Signal-colour screen cleared
PURITY ADJUSTMENTwarming up the unit for 30 minutes or longer with a beam current over 700 ?A
Adjusting procedure and conditions Tightening torque: 108N ? 20 N (11kgf ? 2 kgf)
beam current to about 700 ?A.coil.netic field and keep the static convergence roughly adjusted.through the microscope. to A rank requirement.EA rank requirements. If not, stick the magnet sheet to correct it. Note:This adjustment must be done afterGreen-only
change.
1.Receive the GREEN-ONL2.Degauss the CR3.Maintain the purity magnet at the zero mag-4.Observe the points a, b, as shown in 5.Orient the raster rotation to 0 eastward. 6.Tighten up the deflection coil screws.7.Make sure the CR*For the following colours press R/C RGB key to
PURITY ADJ.
1
NO.Adjustment part
IF OUT
1000p75ohm-1.5+/-0.8dB, signal
Adjustment.1n60
E-9 CH
Fig. 1Fig. 2
10k100k
P C
Waveform and others
For the 50 ohm signal strength gauge, when not using 50/75 impedance adapterstrength is 52 ?1 dB?V(75 ohm open), instead of 57 ?1 dB?V (75 ohm open).The loss of using impedance adapter
OscilloscopeNote:Precaution:
) to
.
Fig.1
Adjust the
.
PRECAUTIONTP201 (TunerOsTP201
Tuner output pin
Fig. 3TV Set
7-1
.Fig. 3
Bias box: About 4.5 V
E
Fig. 2
CONDITION� before switch to service mode for PIF ADJUSTMENT+�
+�
sure to keep the tuner cover in
position during this adjustment.0.1V
Adjusting procedure and conditionsSignal Strength: 57 ?1 dB?V (75 ohm open)Bias box
but with no signal input. Adjust the PLL data.to the tuner antenna. (RF SWEEP)ANCE probe with wave detector; see the tuner's IF output terminal. (This terminal must have the probe alone connected).with the waveform.as shown in E AGC Terminal) as shown in Oscilloscope"AGC" bus data to obtain the drop 0.1 V below maximum voltage.63~67dB?V, and make sure there is no noise.sure that there is no cross modulation beat.
1.Get the tuner ready to receive the E-9 signal,2.Connect the sweep generator's output cable3.Adjust the sweep generator's to 80dBuV 4.Connect the response lead (use LOW IMPED-5.Set the RF AGC to 0 - 6 V with no saturation6.Adjust the tuner IF coil to obtain the waveformNote:Be 1.Receive "PAL COLOUR BAR" signal.2.Connect the oscilloscope to 3.Call "AGC" mode in service mode. 4.Change the antenna input signal to5.Turn up the input signal to 90~95 dB?V to be
ADJUSTMENT
2C BUS
Tuner IFT (PRESET)RF-AGC TAKE OVER POINT ADJUSTMENT (ICONTROL)
12
Make sure TV set is in �NORMALNO.Adjustment part
7 |