Zenith PRO895X Installation And Setup Manual - System Alignment

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SYSTEM ALIGNMENT

Mount Bracket Center

11" from Front Panel

Under the Green CRT 

Center

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III. PRELIMINARY ALIGNMENT SETUP 

The following procedures are intended for complete

“Geometry/Convergence” setup. Use the customer’s signal for

doing phase, and size adjustments. You can use the internal

patterns for shape and convergence if the customer signal

sources do not have a cross-hatch pattern. 

If you are realigning a single CRT, due to replacement, or doing

alignment touch up, perform the following steps as needed. 

1. Yoke Tilt Alignment 

Use a cross-hair or cross-hatch pattern. Monitor only the cen-

ter- most horizontal line of the pattern to check yoke tilt. 

Do not use SW9501, on the 9-1510 module, to disable conver-

gence. The vertical circuit is not disabled, only the horizontal is

disabled.

a. Set Horizontal DC centering to “0” (red, green, blue).

b. Set Vertical DC centering:

Floor: Red = -30; Green = -20; Blue = -30.

Ceiling : Red = 30; Green = 20; Blue = 30.

c. In geometry mode and convergence mode (green, red, and 

blue) set “SKEW” H = 0  and “SKEW” V = 0. 

d. Adjust the Red, Green, and Blue yokes for no horizontal 

tilt or twist. 

2. Yoke Ring Magnet and Astigmatator Alignment 

Verify Only - This is not a normal field adjustment.

The astigmatator assembly should be mounted 62.5 mm from

the video output module (from the front edge of the video out-

put module to the six pole rings). Refer to figure on page 24.     

Astigmatator Alignment Verification Test

Adjust for the best electrical and mechanical focus. 

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