RCA MCR61TF30, Руководство по обслуживанию

Страница: 36 / 48

SERVICE MANUAL
9) Stick three adhesive tapes on wedges as shown in Fig. 18.
Fig. 20
Circuit Adjustments
1. General Description
All adjustments are thoroughly checked and corrected before the TV outgoing. Therefore the TV
should operate normally and deliver proper colour pictures upon installation. However, several
minor adjustments may be required depending on the particular location where the TV is operated.
This TV is shipped completely in carton. Carefully take out the TV from the carton and remove all
packing materials. Connect the power cord into a 120V AC, 60Hz two-pin power outlet. Turn on the
TV. Check and adjust all the customer controls such as brightness, contrast and colour to obtain
natural colour pictures.
2. Automatic Degaussing
A degaussing coil is mounted around the CRT so that external degaussing after moving the TV is
generally unnecessary, providing it is properly degaussed upon installation. The degaussing coil
operates in about 1 second after power on. If the set is moved or faced to a different direction, the
power switch must be switched off for a few minutes in order that the automatic degaussing circuit
operates properly. Should the chassis or parts of the cabinet become magnetized to cause poor
colour purity, use an external-degaussing coil. Slowly move the degaussing coil around the screen,
the sides and front of the TV and slowly withdraw the coil to a distance of about 2m before unplug it.
If colour shading still exists, perform the Colour Purity Adjustment and Convergence Adjustment
procedures.
34