Chapter 5---Troubleshooting

Problem and

Possible Solution

Service

Operator

Symptom to

 

Manual

Manual

Check

 

 

 

Data lost when

SCB socket batteries weak. “RAM

4.14

 

projector is

BATTERY LOW” may appear

 

 

turned off and

on screen.

 

 

back on.

 

 

 

“Flagwaving” at top

VCR mode (if using CVID or SVID

5.3

Table 5-4

of picture or top

input).

 

 

of image is

Select 2H Sync Enable or

 

 

skewed.

Shift Sync Enable from the

 

 

 

Menu.

 

 

Convergence and/or

Menu Position adjustment for the

 

 

shading is

“Copied to” channel.

 

 

incorrect after

 

 

 

doing copy

 

 

 

channel.

 

 

 

Red bands across

Channel data not loading properly.

 

 

image after

Upgrade software.

 

 

channel change.

 

 

 

Communication

Unplug tethered remote at the

 

 

error.

projector

 

 

 

and reconnect.

 

 

Check hardwired

Bad RS-232 null modem cable.

 

 

cable for broken

 

 

 

wires and/or if

 

 

 

wired for RS-

 

 

 

232 null modem.

 

 

 

Bad RS-232

Replace System Controller Board.

4.11

 

interface port on

 

 

 

the System

 

 

 

Controller.

 

 

 

Board.

 

 

 

LCD displays

Unplug tethered remote at projector

 

 

erroneous

and reconnect.

 

 

characters.

 

 

 

 

 

 

 

Infrared I/R

 

 

 

Remote

 

 

 

No response.

Set I/R remote dip switch settings.

 

5.8

5-13

Model 330, 340SC, and 370SC Service Manual

Page 153
Image 153
JVC 330, 370 SC, 340 SC service manual No response Set I/R remote dip switch settings