Applica RV500C : Technical information : Page 80

2.2.2.1 Function Checks

Basic functions can be checked using the self-test raster.

Refer to "Adjustment Procedures" in topic 2.2.2.3 when adjustments are

required after replacing components.

Refer to "Display-Specific Removals and Replacements" in topic 2.2.1 for

removal and replacement procedures.

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¦ Symptom ¦ Action ¦

+-----------------------+------------------------------------------------¦

¦ Any problems. ¦ First, check all connections and associated ¦

¦ ¦ items for continuity. ¦

+-----------------------+------------------------------------------------¦

¦ Raster missing and ¦ Replace card assembly. ¦

¦ green LED not lit. ¦ ¦

+-----------------------+------------------------------------------------¦

¦ Raster missing, but ¦ Replace card assembly. ¦

¦ green LED flashes ¦ ¦

¦ during attempt to ¦ ¦

¦ power on. ¦ ¦

+-----------------------+------------------------------------------------¦

¦ Raster missing, but ¦ Check if CRT heater is glowing: ¦

¦ green LED lit. ¦ ¦

¦ ¦  NO - Replace card assembly. If fault ¦

¦ ¦ persists, replace the CRT. ¦

¦ ¦ ¦

¦ ¦  YES - Turn G2 potentiometer clockwise. If ¦

¦ ¦ a raster appears, readjust the video gain ¦

¦ ¦ and cut-off potentiometer if possible. ¦

¦ ¦ Otherwise, replace the card assembly. If ¦

¦ ¦ no raster appears, replace the CRT. ¦

+-----------------------+------------------------------------------------¦

¦ Raster visible but ¦ Turn cutoff or gain controls, for the missing ¦

¦ one or two colors ¦ color(s), clockwise. If the color(s) ¦

¦ missing. ¦ reappear, readjust the video gain and cut-off ¦

¦ ¦ potentiometer if possible; otherwise, replace ¦

¦ ¦ the card assembly. If the colors do not ¦

¦ ¦ appear, replace the CRT. ¦

+-----------------------+------------------------------------------------¦

¦ Raster visible but is ¦ Replace card assembly. ¦

¦ too narrow, or does ¦ ¦

¦ not fill the bezel ¦ ¦

¦ vertically. ¦ ¦

+------------------------------------------------------------------------+

If the raster is the correct size, then additional checks should be

carried out. Connect the display to the PS/2 system unit, and load the

Alignment Diskette as described in "Adjustment Procedures" in

topic 2.2.2.3.

PS/2 Displays Maintenance Manual

Function Checks

2.2.2.1 - 1