Atari CX User Manual

GRAY BAR TEST
Purpose:
To test the functioning of the luminescence lines
(LMl, LM2,
LM3) from the GTIA chip.
0 Procedure: Press key 3 followed by START.
Format: Eight horizontal gray bars are displayed, going from black at the
top to white
at the bottom in even steps (see Figure 3A-2). The screen
should be steady and unchanging.
These lines may have minor glitches on
their edges. A thin white line always appears just over the top (black)
bar.
No color should appear anywhere on the screen. The areas above the
top (black) bar and below the bottom (white) bar are of
no importance to
the
test. This test should be left on for at least ten seconds to ensure
that there is no flashing of any color or shifting of the gray bars.
Diagnostic Flowchart Entry Point:
Pg. 4A-16.
Figure 3A-2. Gray Bar Screen
CX5200 Field Service Manual 3A-5
Changed by
ECN #0036
612 1/83

Atari CX Specifications

General

Brand	Atari
Model	CX
Category	Home Theater System
Language	English