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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
Excellent quality service manual. Quick processing, fair prices. Love to do business again. Thank you!!!
Excellent service manual, the only known point of note is the alignment of improvability scanned pages within the pdf page. The resolution is good.
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/
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!
NOTE: Return to step #3 and perform the same alignment procedure but substitute L2 for L1. Continue to align L10, L7, L2, and L1, until there is no improvement in IF-level maximum level between the two antenna ports, and that the isolation between the two ports is greater that 40 dB. Alignment of IF Section: 6)
Connect an RF signal generator to ANTENNA port #1 and set to: Amplitude = 45 dBu Pilot tone = off Modulation = off Frequency = 98.000 MHz. Press the ANTENNA-button and select ANTENNA port #1. Press the IF-button to select IF WIDE. With the same oscilloscope setup as in procedure #3, check that the IF-signal had increased approximately 3 dB compared to IF NARROW. Remove the oscilloscope probe from the common point between CF3 and CF4.
Adjust L13 (or VR1) until the centre-tune LED turns on. Fine adjust VR1 so that it lights from approximately 97,965 MHz. to 98,035 MHz equally. Alignment of Audio Section: 8) Set the S400 as the following: Press the IF-button to select IF WIDE. Press the ANTENNA-button and select ANTENNA 1. Press the MONO/MUTE-button to MUTE OFF MONO. Press the BLEND-button to BLEND OFF. Press the BANDWIDTH-button to BANDWIDTH WIDE. Tune the S400 to 98.00 MHz. Connect an audio AC voltmeter with decibel display to both the right and left audio output jacks. Set the AC-voltmeter to negative 30 dB range. Leave the audio AC-voltmeter attached to the S400 audio output jacks until told to remove it. Then connect an RF signal generator to ANTENNA port #1 and set to: Amplitude = 45 dBu Pilot tone = on (19 kHz @ 10%) Modulation = off Frequency = 98,00 MHz Adjust L3 for a minimum 19 kHz output at the right audio jack. Adjust L4 for a minimum 19 kHz output at the left audio jack
Connect an RF signal generator to ANTENNA port #1 and set to: Amplitude = 70 dBu Pilot tone = off Modulation = off Frequency = 98.000 MHz.
With the same oscilloscope setup as in procedure #3, press the ANTENNA button and select ANTENNA port #1. Check that the IF-signal is reduced by a minimum of 40 dB. Connect the signal generator to ANTENNA port #1. With the same oscilloscope setup as in procedure #3, adjust L2 until the IF-signal is at maximum setting. Press the ANTENNA button and select ANTENNA port #2. Check that the IF-signal is reduced by a minimum of 40 dB.
Complete owner's manual in digital format. The manual will be available for download as PDF file aft…