G – Genlock Module calibration

Overview

This calibration sets the clock generator on the genlock module to 4.5Mhz.

Setting up the oscilloscope

Connect the scope channel 1 to 6G1 and ground the probe on 9G2. Set up channel 1 to DC coupled, 1V vertical divisions and 500ms horizontal divisions and measure frequency.

Module G – Layout

Adjustment points

Adjust coil L5001 until the clock generator outputs 4.5MHz to 6G1 as shown in the following trace (note that it is not necessary to play a disc when performing this test, but the player should be left on for 5 minutes before performing calibration):

Module G – CH1_6G1