Pioneer CDXP23S is an old model and has been top useful for me to find this Manual. CD Player is still repaired.
Text excerpt from page 18 (click to view)
Alignment and Adjustments
4-3 Beam Alignment
1. Input a crosshatch and dot pattern. 2. Select the â€śSTANDARDâ€ť video mode. 3. Warm up the TV for at least 10 minutes. 4. Connect an audio oscillator to the pin jig between GT401~GT402 (located on the deflection PCB) and GND. 5. Determine the ZERO-magnet area (using the beam-alignment CY) 6. Check the squarewave at the point where the focus is misaligned (Use an audio oscillator).
(Creation of CPM Zero Magnet)
(Creation of the 2-pole/4-pole zero magnets)
1. Cover the Red and Blue lenses. 2. Adjust the Green lens as shown in the figures below
Varying the 2-pole of VM (Varying G-Focus Pack) G-FOCUS CORE (Positioning the Core in the Center)
Varying the 4-pole of VM (When VM 2-Pole Adjustment is completed) (Adjust until the light around the core becomes a circle)
3. Adjust the G-Focus until any light around the core disappears. 4. Cover the Green and Blue lenses. 5. Adjust the Red lens using the same method as with the Green lens. 6. Note: The Blue lens is not adjusted because its focus varies little (VM-coil is installed). 7. After the adjustments are completed, disconnect the jig pin connector.