Applica RV500C : Technical information : Page 158

2.5.2.2.1 Preliminary Steps

Proceed as follows.

1. Insert the IBM Personal System/2 Color Displays Test-Pattern Diskette

in drive A of the system unit.

2. Turn power on at the system unit and the display. The system unit

runs its internal checks, and then loads the program from the

diskette.

3. Allow 20 minutes for the display to warm up before making any further

adjustments.

Refer to "Adjustment Procedures" in topic 2.5.2.4 when adjustments are

required.

Refer to the "Display-Specific Removals and Replacements" in topic 2.5.1

for removal and replacement procedures.

DANGER

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

¦ Use caution when making adjustments with the cover removed. There are ¦

¦ high voltages on the analog and video cards. ¦

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

¦ Symptom ¦ Action ¦

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

¦ Displayed image width ¦ Adjust RV354, RV355 (8517 only), RV356, and ¦

¦ is too large or too ¦ RV357. If symptom persists, replace analog ¦

¦ small. ¦ card. ¦

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

¦ Displayed image ¦ Adjust RV211, RV212, RV213, RV214 (8517 only), ¦

¦ height is too large ¦ RV215, and RV216. If symptom persists, ¦

¦ or too small. ¦ replace analog card. ¦

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

¦ Contrast or ¦ Check connections between H3 (see Figure 8-7 ¦

¦ brightness controls ¦ in topic 2.5.2.3) and B6 (see Figure 8-11 in ¦

¦ are not working. ¦ topic 2.5.2.4.2). If good, do pod assembly ¦

¦ ¦ checks. Replace pod if it is defective. ¦

¦ ¦ Otherwise replace video card. ¦

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

¦ Maximum or minimum ¦ Video colorpoint is not set. Adjust as ¦

¦ white is poor. ¦ appropriate. ¦

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

¦ Pattern is out of ¦ Do focus and convergence adjustments. ¦

¦ focus, vertical lines ¦ ¦

¦ have colored edges or ¦ ¦

¦ are multicolored. ¦ ¦

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

¦ Geometry is poor. ¦ Follow alignment procedures to achieve good ¦

¦ ¦ geometry. If impossible, replace analog card. ¦

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

¦ One or more colors ¦ If colors good with test raster (signal cable ¦

¦ missing. ¦ disconnected), check connector B1 (see ¦

¦ ¦ Figure 8-11 in topic 2.5.2.4.2). ¦

¦ ¦ ¦

¦ ¦ Check connector on system unit. ¦

¦ ¦ ¦

¦ ¦ If symptom persists replace signal cable. ¦

¦ ¦ ¦

¦ ¦ If symptom still persists replace video card. ¦

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

¦ Displayed image does ¦ Check connector on system unit. Ensure that ¦

¦ not synchronize ¦ D6, B2, and B11 are connected (see Figure 8-11 ¦

¦ horizontally or ¦ in topic 2.5.2.4.2). If symptom persists ¦

¦ vertically. ¦ replace analog card. ¦

¦ ¦ ¦

¦ ¦ If symptom still persists replace video card. ¦

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

¦ Background raster is ¦ Adjust RV506 (see Figure 8-8 in ¦

¦ not centered ¦ topic 2.5.2.4.2 or Figure 8-9 in ¦

¦ horizontally. ¦ topic 2.5.2.4.2). If raster cannot be ¦

¦ ¦ centered, replace analog card. ¦

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

¦ Displayed image is ¦ For 8517, adjust RV403, RV404 and RV405 (see ¦

¦ not centered ¦ Figure 8-8 in topic 2.5.2.4.2). ¦

¦ horizontally. ¦ ¦

¦ ¦ For 9517, adjust RV403, RV404 (see Figure 8-9 ¦

¦ ¦ in topic 2.5.2.4.2). ¦

¦ ¦ ¦

¦ ¦ If image cannot be centered, replace analog ¦

PS/2 Displays Maintenance Manual

Preliminary Steps

2.5.2.2.1 - 1