Johnson JET 6000, Service Manual

Page: 28 / 62

No display on console
Possible causes:
1. Breaker is damaged.
2. ON/OFF switch is
damaged.
3. MCB is damaged.
4. 8-pin console cable is
damaged.
5. PCB is damaged.
Fix:
1.
( refer to MCB LED layout & indication)
Verify if
LED 115vAC(AC) is lit. If this LED is lit, go to step 2.
If LED 115vAC(AC) is not lit, verify the following:
u
Inspect the circuit breaker to see if it has tripped off.
( If it is tripped off--like diagram B, reset the
breaker. And check which part is short-circuited.
Then replace the short-circuited
part.)
2. The switch is turned to the "ON"
position.
( If the switch light isn't lit, replace the switch.)
u
Verify wire connection AC1 & AC2 on the MCB.
( refer to wiring diagram )
u
Verify the ON/OFF switch, breaker & socket wires are
connected.
3. Verify if LED +12v is lit. If one is not lit, replace MCB.
4.
Replace 8-pin console cable.
5. Replace PCB.
B A
6-1 Revision: 1.0 Date: 2001-06-01