ORION 8500 CHASIS
Service Manual

Crystal Adjustment The adjustment start pressing the Volume + or � of remote control and the setting will be made automatically. (Warning: PAL signal is mandatory). AGC tuner setting Applying a signal of 1mV to the aerial input (UHF channel), adjust so as to give 4 VDC at pin 1 of the tuner. Screen grid voltage (Vg2) Adjust the potentiometer G2 on the transformer EHT until the confirmation message appears. No particular signal set-up is required.

Vertical geometry The VS (Vertical Slope) function must be adjusted in such a way that the central horizontal line in the test signal is exactly on the border between the visible image and the lower black part. It must not subsequently be altered. Now set the remaining parameters as accurately as possible in the sequence in which they appear. Horizontal geometry Adjust as accurately as possible in the sequence in which they appear. Adjusting white (Red/Green) Using a B/W bar signal, adjust to obtain a grey image. The blue setting is fixed. Exiting service mode Once you have made the necessary adjustments, press the OK key on the remote control in one of the menus in which it is active to store all the functions and return to normal operation of the appliance.