JVC 370 SC, 330, 340 SC service manual

Chapter 5---Troubleshooting

Table 5-1Error Codes for the Model 330, 340SC and 370SC Projectors

LED	On-Screen Text	Description
Codes shown along with operator messages.
b	A RAM BATTERY	Memory problem—data may be lost if
	IS LOW	power-off.
c	COLOR IS	Adjustment being attempted on cut-off gun.
	CUTOFF
d	DSP INIT FAILURE	Convergence logic is dead at power-on.
l	LAMP TO-ON,	Arc lamp did not light.
	BUT OFF
m	LAMP TO -OFF,	Problem detecting arc lamp state.
	BUT ON
p	POWER TO-ON,	Power supply problem.
	BUT OFF
w	POWER TO-OFF,	Power supply problem.
	BUT ON
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.

vExtron communication time-out.

Model 330, 340SC, and 370SC Service Manual 5-2