14U10/15
14U20/25
IF OUT
1000p75ohm-1.5+/-0.8dB
V (75 ohm
1n60?
E-9 CH
1dB
?
Fig.1Fig.2
10k100kV(75 ohm open), in-
?
P C
1dB
?
strength gauge, when not using 50/75 impedance adapter, signal strength is 52stead of 57open).impedance adapter
Oscilloscope
Note: For the 50 ohm signalPrecaution: The loss of using
V,
?
V.
?
V to be sure
?
TP201
ocedureWaveform or othersTV SetTuner output pin
e the CH. E - 9 sig-?6-2V (75 ohm open)
TP201 (TunerOs AGC
vice mode. Adjust the
minal. ( This terminal must? 1 dB
Bias box: About 4.5 V
?Fig. 3
+�
+�
PIF ADJUSTMENT
0.1V
Conditions/Adjusting prBias box
Oscilloscope
during this adjustment.
Signal Strength: 57
nal, but with no signal input. Adjust the PLL data.the tuner antenna. ( RF SWEEP )ANCE probe with wave detector ; see Fig.1 ) to the tuner's IF output terhave the probe alone connected ).the waveform.shown in Fig. 2.?Terminal) as shown in Fig. 3."AGC" bus data to obtain the drop 0.1V below maximum voltage.and make sure there is no noise.that there is no cross modulation beat.
1.Get the tuner ready to receiv2.Connect the sweep generator's output cable to3.Adjust the sweep generator's to 80dB4.Connect the response lead ( use LOW IMPED-5.Set the RF AGC to 0 - 6 V with no saturation with6.Adjust the tuner IF coil to obtain the waveform asNote: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
Adjusment pointTuner IFT ( PRESET )RF-AGC TAKE OVER POINT AD- JUSTMENT (ICONTROL)
12
No.
11
OFF
2PROM.
6-1
ITEMSDATA SETTINGDIGIT1SKIPOFF AFCONTINT0 (CENTER)
VOLUME1
C-SYSTEMAUTO S-SYSTEMB/GCONTRAST60 (MAX) COLOUR0 (CENTER)SHARPNESS0 (CENTER) WHITE TEMPSTANDARDON TIMERIn-active, "--:--" OFF TIMERIn-active, "--:--"LANGUAGEENGLISH
BRIGHTNESS0 (CENTER)LAST POWERPOWER-ONHOTEL MODEOFF
REMINDER TIMERIn-active, "--:--"BLUE BACK MUTE
LAST PROGRAM/CHANNELFLASHBACK PROGARM/CH
SHIPPING SETTING & CHECKING
(1)The following default data has been factory-set for the E
6 |