Specifications

2.3 CODE #13 — ZERO CROSS SIGNAL ERROR
- Definition -
The CPU does not receive the zero cross signal within 0.56 second.
- Possible Causes -
• Main board defective
• DC power supply board
• Zero cross line open
- Action -
Turn the main switch off and on.
Check the voltage at CN102-2 on the dc power supply unit.
0.6V 0V
Replace the dc power supply board.
Check the voltage at CN108-1 on the main board.
0.6V 0V
Replace the dc harness.
Replace the main board.
1 December 1990
6-27