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This service manual helped me to repair my PIONEER. Iam very satisfied, that I found it here.
Even the price of manual was not so high that person would not be able to spend a few money.
But that is very worth spent money. Thanks
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Excellent quality service manual. Quick processing, fair prices. Love to do business again. Thank you!!!
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Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
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I was very glad recieving the service manal from You. Additionaly very fast. Extremaly nice servicing. Thanks very mach! Now my GX-220 working better, than it was made. Alexander from Moscow, Russia/
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Sweet! I won the item on eBay and couldn't adjust the geometry or even keep a steady picure. This guide has the full schematics (not available anywhere else as far as I could tell), and was a bargain for the wealth of knowledge it contains. I hooked it up to my testing equipment, tweaked a few potentiometers and got it playing videogames in no time. Thanks!
PURITY ADJUSTMENT ADJUSTMENT PRECAUTION:
1 PURITY ADJ. 1. Receive GREEN-ONLY signal. Adjust the beam current to about 500 µA. 2. Degauss CRT enough with the degausing coil.
Make sure TV Set is in "Normal Condition" before switch to service mode for adjustNo. point Adjusting procedure/conditions Waveform and others ment.
a b
Note: Follow the Job Instruction Sheet to adjust the magnetic field. 3. Maintain purity magnet at the zero magnetic field and keep the static convergence roughly 1 Tuner IFT 1. Get tuner ready to receive the CH. E 9 adjusted. ( PRESET ) signal,but with no signal input. 4. Observe the points a, b as shown in Fig. 4-1 Adjust the PLL data.
Oscilloscope IF OUT
PIF ADJUSTMENT
No. point Adjusting procedure/conditions Waveform and others
2. Connect the sweep generator's output cable to 1n60 1000p through microscope. Adjust landing to the 10k 5. Orient the raster rotation to 0 eastward.
100k 75ohm
Fig. 4-1
the tuner antenna. ( RF SWEEP ) rank A requirements. 6. Tighten up the deflection coil screws. 3. Adjust the sweep generator's to 80dBuV. 4. Connect the response lead ( use LOW IMPED-
ANCE probe with wave detector ; see Fig.1 ) to » Tightening torque: 108 20 N (11 ± 2 kgf) A the tuner's IF output terminal. ( This terminal Fig.1 7. Make sure CRT corners landing meet the A rank requirements. If not, stick the magnet sheet must have the probe alone connected ). to correct it. 5. Set the RF AGC to 0 6 V no saturation with B Note: This adjustment must be done after the waveform. longer with a beam current over 500 µA. shown in Fig. 2. -1.5+/-0.8dB Fig.2 * For the following colours press R/C RGB key to Fig. 4-2 Note: Be sure to keep the tuner cover in position
E-9 CH
6. Adjust tuner IF coil to obtain the waveform as A = B
P C warming up the unit for 30 minutes or
during this adjustment. change. Rank "A"
(on right of the CRT)
Green-only Blue-only Red-only
2 RF-AGC 1. Receive "PAL COLOUR BAR" signal. Note: For the 50 ohm signal
TAKE OVER » Signal Strength: 57 ± 1 dBµV (75 ohm open) strength gauge, when not POINT AD2. Connect the oscilloscope to TP201(Tuner�s AGC u s g 0 / 7 5 i m p d a n c e
Signal-colour A
JUSTMENT Terminal) as shown in Fig. 3. adapter, signal strength is
B + TP201 open).
7
» Bias box: About 4.5 V (on left of the CRT) Fig. 3 * Press R/C RGB key for 1 sec-
2
screen cleared (I C BUS 52±1dBµV(75 ohm open), in-
CONTROL) Oscilloscope stead of 57±1dBµV (75 ohm
0.1V Precaution: The loss of using
� impedance adapter A = B Fig. 4-3
Bias box TV Set
+
� Rank "A"
3. Call "AGC" mode in service mode. Adjust the ond in NORMAL MODE, the
"AGC" bus data to obtain the Tuner output pin colour will change to RGB mono drop 0.1V below maximum voltage. colour mode.
4. Change the antenna input signal to 63~67dBµV,
and make sure there is no noise.
5. Turn up the input signal 90~95 dBµV to be sure
that there is no cross modulation beat.
14D1-SA/SF/GA/GF 14D2-SA/SF/GA/GF
7-1 7-2
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