If a problem occurs in either the unit or power supply a
protection circuit is activated and the unit shuts down. The Power indicator on
the front of the unit will flash red several times indicating an error code. Error codes vary for different models.
LED FLASHES THREE TIMES
LED FLASHES ONCE EVERY FIVE SECONDS
Check the Backlight supply voltage from the P board.
- TC22LR30 -15 volts P2 pin 9-15 Ground pins 1-7.
- TC26/32LX20- 120 volts P4 pins 1-2. Ground Pins 4-7
LED FLASHES 5 TIMES
- Check the Main 9Volts Regulator Q801 on the AP Board.
LED FLASHES 8 TIMES
- Check the Sub 5 Volts regulator, IC808.
UNIT SHUTS DOWN AND THE POWER LED IS OFF
- Check the SOS Shutdown and over-voltage. Use the troubleshooting flowcharts for the Primary and Secondary power supply checks.
SOS SHUT-DOWN PROBLEM
- If the unit keeps shutting down, check the SOS Shutdown line at pin 9 of connector DG2. It should be at a high level. Anodes of D877, D878, D880, D844 all should be high.
THE UNIT FAILS TO PLAY VIDEO FROM DISC
DOES NOT RECORD TO VIDEO DISC
DOES NOT RECORD AUDIO TO DISC
PRIMARY POWER SUPPLY CHECK
SECONDARY POWER SUPPLY CHECK
Click on charts to Zoom
