JVC 330 Service Manual

Contents

Chapter 5---Troubleshooting5-3 Model 330, 340SC, and 370SC Service ManualLED On-Screen Text Descriptionx Problem with decoder module data.y Problem with decode input.# Loss of horizontal sweep detected.Codes indicating a software bug—system should keep running.G Internal error code not recognized.H Incoming command not recognized.J Internal password control code bad.K DAC reference not recognized.L Timer table reference not valid.M IIC reference not recognized.N RTG reference not recognized.P Internal convergence axis reference invalid.Q Internal channel parameter reference not recognized.R Internal convergence data index invalid.5.2 Power-On CodesThe projector performs a series of operations when power is turned on. Codes forthese operations are shown on a LED display at the rear of the projector.Operations are divided into two (2) sets:1. The first (1 st ) set occurs when standby power is applied. For example, theprojector is plugged into a proper outlet and the circuit breaker on the sideof the projector is ON.2. The second (2 nd ) set takes place when the user issues a “power-on”command. For example, presses “Control-P” on a VT-100 terminal or“POWER ON” on the I/R or tethered remote.First SetThe first (1st) set of operations occurs when the +5volts is activated to the SCBprior to applying power to the projector (standby mode). After the +5volts isapplied, the LED should display a zero or #—if not displayed, there is a problemwith the SCB.Verify the following conditions:1. Verify that +5volts and +24volts standby LEDs are lit. If STB +5volts and+24volts are not present, verify that the projector is plugged into a properoutlet and that the circuit breaker on the right side of the projector is on. If