JVC 340 SC - Manual (Page 142)

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.