Kaypro 2 - 15-14.TIFF

15.4 IQ\YPR) 1U3IE SYMPJXM--FIX GJIIE
CCNDITION
No p::>wer, no
lights, no video
ros8IBLE CAUSE
Power cord not
plugged in
Fuse is blown
Mainboard not getting
p::>wer
Defective mainboard
RECOMMENDED ACTION
Check all cord connections
Replace fuse
Check harness connections; check
for proper voltages; replace
either harness or p::>wer supply
Replace mainboard
Defective p::>wer supply Replace p::>wer supply
Defective harness
Replace harness
Fuse blows when
power is turned
on
Defective power supply Disconnect all roodules fran power
supply; replace power supply if
fuse still blows
High-pitched
squeal or "chirp"
No video display
CX1e roodule has a
short
Defective harness
CX1e module is
shorted
Brightness not
adjusted
CRI' not connected
15--14
Disconnect all roodules, replace
fuse, am re-connect roodules, one
at a time, until fuse blows.
Replace that roodule
Replace harness
Unplug modules, one at a time,
fran the harness. Replace the
roodule whJse unplugging causes the
noise to stop
Turn up brightness knob on rear of
chassis; turn up brightness p::>t on
CRI' board, if necessary
Check all connections to CRl'; be
sure plug on rear of CRI' tube is
square