Kaypro 2 - 15-09.TIFF

KAYPRO UJ SYMPTCM-FIX QJIIE (C(Nl" D)
CCNDITICN PC6SIBLE CAUSE
High-pitched (he nodule is shorted
squeal or "chirp"
upon poNer-on
Pow'er LED flickers Shorted nodule
REXX1'MENDED ACI'ICN
Unplug nodules I one at a time I
fran the harness. Replace the
nodule whose unplugging causes the
noise to stop.
Discormect nodules :frcm poNer one
at a time until LED stays on;
replace nodule whose unplugging
causes LED to stay on
Defective poNer supply Replace poNer supply
No video display,
or pcx:>r quality
display
De fecti ve harness
Brightness not
adjusted
CRI' not connected
De fecti ve eRr
De fecti ve mai.nlxJard
Replace harness
Turn up brightness knob on rear of
chassis; turn up brightness p::>t on
CRI' l::oard, if necessary
Check all cormections to CRI';
ensure CRI' tube plug is square
Replace CRI' assembly
Replace mainl::x:>ard
Defective poNer supply Replace poNer supply
Extra pixels on
video
Inverse video
only
De fecti ve harness
De fecti ve mainboard
De fecti ve eRr
De fecti ve mainboard
De fecti ve CRI'
15-9
Replace harness
Replace mai.nlxJard
Replace CRI' assembly
Replace mainOOard
Replace CRI' assembly