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Chapter 5---Troubleshooting
5-13 Model 330, 340SC, and 370SC Service Manual
Problem and
Symptom to
Check
Possible Solution Service
Manual
Operator
Manual
Data lost when
projector is
turned off and
back on.
SCB socket batteries weak. “RAM
BATTERY LOW” may appear
on screen.
4.14
“Flagwaving” at top
of picture or top
of image is
skewed.
VCR mode (if using CVID or SVID
input).
Select 2H Sync Enable or
Shift Sync Enable from the
Menu.
5.3 Table 5-4
Convergence and/or
shading is
incorrect after
doing copy
channel.
Menu Position adjustment for the
“Copied to” channel.
Red bands across
image after
channel change.
Channel data not loading properly.
Upgrade software.
Communication
error.
Unplug tethered remote at the
projector
and reconnect.
Check hardwired
cable for broken
wires and/or if
wired for RS-
232 null modem.
Bad RS-232 null modem cable.
Bad RS-232
interface port on
the System
Controller.
Board.
Replace System Controller Board. 4.11
LCD displays
erroneous
characters.
Unplug tethered remote at projector
and reconnect.
Infrared I/R
Remote
No response. Set I/R remote dip switch settings. 5.8