Projector Service Manual

Chapter 5---Troubleshooting
Model 330, 340SC, and 370SC Service Manual 5-2
Table 5-1
Error Codes for the Model 330, 340SC and 370SC Projectors
LED On-Screen Text Description
Codes shown along with operator messages.
b
A RAM BATTERY
IS LOW
Memory problem—data may be lost if
power-off.
c
COLOR IS
CUTOFF
Adjustment being attempted on cut-off gun.
d
DSP INIT FAILURE Convergence logic is dead at power-on.
l
LAMP TO-ON,
BUT OFF
Arc lamp did not light.
m
LAMP TO -OFF,
BUT ON
Problem detecting arc lamp state.
p
POWER TO-ON,
BUT OFF
Power supply problem.
w
POWER TO-OFF,
BUT ON
Power supply problem.
LED Description
Codes indicating temporary error state or hardware problem.
a
An internal table controlling timing is momentarily full.
e
A CPU trap error has occurred. This is potentially serious.
f
The internal system command queue is momentarily full.
g
Problem with the terminal-in port timing.
h
Problem with the terminal-in port operation.
i
Problem with the DSP output circuits—convergence may be lost.
j
DSP time-out—should recover automatically. May affect
convergence.
k
Problem with the IIC hardware—Type 1.
o
Problem with the IIC hardware—Type 2.
q
Hardware detected source change but nothing found by software.
r
Problem with DAC hardware.
s
Vertical sync not detected.
t
Loss of video-OK detected.
u
Problem with Extron communication.
v
Extron communication time-out.