Panasonic PT53X54J - 53" PROJECTION TV HD, Service Manual

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18.3 Autoconvergence adjustment
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The GN1P family has a special feature that performs an autoconvergence quick adjustment with a 4 point optical
reference pattern. To perform this automatic adjustment the receiver must sweep 4 line reference pattern(2 horizontal and
2 vertical)for all 3 colors (red, green and blue). The receiver capture the light sweep alignment with 4 optical sensors inside
the screen frame perimeter.
Sensor Location
In Service mode:
In case that autoconvergence adjustment does not give proper convergence alignment results repeat manual
convergence adjustment procedure.
Autoconvergence Troubleshoot (ERROR display)
When autoconvergence feature is executed and the procedure doesnt complete accordingly by displaying an error number
on screen, check the possible causes in the following order:
1. Make sure convergence and electrical adjustments are properly set.
2. Check all chassis connections.
3. Check that Autoconvergence patterns are centered and displayed correctly.
4. Check that K-board is properly connected.
5. Check that optical sensors (screen frame) are properly connected and working. Check the following error table for
possible optical sensor malfunction or bad connection. In case of malfunction, replace optical sensor (CD-board).
Error display Description
A0 Left sensor did not detect horizontal red.
A8 Top sensor did not detect horizontal red.
B0 Bottom sensor did not detect horizontal red.
B8 Right sensor did not detect horizontal red.
A2 Left sensor did not detect horizontal green.
AA Top sensor did not detect horizontal green.
B2 Bottom sensor did not detect horizontal green.
BA Right sensor did not detect horizontal green.
A4 Left sensor did not detect horizontal blue.
AC Top sensor did not detect horizontal blue.
B4 Bottom sensor did not detect horizontal blue.
BC Right sensor did not detect horizontal blue.
A1 Left sensor did not detect vertical red.
A9 Top sensor did not detect vertical red.
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