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1. Power Board
1-1. The whole flowchart which it follows in voltage output state
Start check
Doesn't the
Yes
screen whole come
out?
No
Doesn't the
Yes
low pressure output
come out?
No
Doesn't the
Yes
high tension output
come out?
No
Does
Yes
high tension
output voltage Drop
occur?
No
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TROUBLE SHOOTING GUIDE
Is it identical
No
with Power Off
condition?
Yes
1. Check the Power Off
condition.
Doesn't the
No
St-by 5V signal
come out?
Yes
3. Check the St-by 5V
signal circuit.
Doesn't the
No
VSC signal Vs-ON
come out?
Yes
7. Check the VSC Vs-ON
signal
When the
Y, Z B/D Module
input connector is remove,
does Power Board hightension
output voltage Drop
occur?
Yes
9. Check the Power
Board Output high
tension circuit
- 15 -
Is the Interface
signal operated?
Yes
2. Check the Interface
signal condition.
Doesn't the
No
5V Monitor signal
come out?
Yes
4. Check the 5V Monitor
signal circuit.
Doesn't the
Vs, Va voltage output
come out?
Yes
8. Check the Vs, Va
voltage output circuit.
When the
Y B/D Module
No
input connector is
removed, does output
voltage drop
occur?
Yes
10. Check the Z B/D
Module output circuit
Doesn't the
VSC signal RL-ON
come out?
Yes
5. Check the VSC RL-ON
signal.
No
Doesn't the
VSC low pressure
output come out?
Yes
6. Check the VSC low
pressure output
When the
Z B/D Module
No
input connector is
removed, does output
voltage Drop
occurs?
Yes
11. Check the Y B/D
Module output circuit
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