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Sharp YO-370 Instrukcja Obsługi Strona 90

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78 Revision 10 – 1/09/2015 FTS 370d/w/r
Troubleshooting
Follow the troubleshooting steps in the
tables below as applicable. Repair
procedures are provided in Component
Removal and Replacement.
Table 5-1 – Troubleshooting – Initial Inspection
Step
Check/Test/Action
Action
1.a Is the flashhead flashing? Yes
No
Go to Step 1.b
Go to Step 2.a
1.b Is the failure related to a connected tier of L810
side markers (marker alarm)?
Yes
No
Go to Step 4.a
Go to Step 1.c
1.c Are alarms present on PCB1? Yes
No
Review Tables 1-3 and 3-3.
System okay.
Table 5-2 – Troubleshooting – System Voltage
Step
Check/Test/Action
Action
2.a Is input power applied?
Measure at TB1 terminals L1 & L2.
Yes
No
Go to Step 2.b
Correct problem.
2.b Is power being output from TB1?
Measure at TB1 terminals L1F and L2F.
Yes
No
Go to Step 2.c
Check / Replace fuses F1& F2.
Replace VR1.
2.c Are any of the Status and Alarm Indicators (LEDs
or OLED display) lit on PCB1?
Yes
No
Go to Step 2.g
Go to Step 2.d
2.d Is the correct voltage present on PCB1?
Measure at P2 terminals 1 & 2 (12 VDC).
Yes
No
Replace PCB1.
Go to Step 2.e
2.e Are the operational status LEDs lit on PCB4?
Note: Verify that the input power switch, located
on PCB4 (AC units only), is in the “On” position.
See Figure 2-22 for switch location.
Yes
NO
Check wiring and connections
between PCB4 and PCB1.
Go to Step 2.f
2.f Is the correct input voltage present on PCB4?
Measure terminals labeled L1 & L2 for AC power.
Yes
No
Replace PCB4
Repair connections between
TB1 and PCB4.
2.g Is the correct voltage present on TB2?
Measure at TB2 DC+ & DC- (60 VDC)
Yes
No
Go to Step 3.a
Go to Step 2.h
2.h Is the correct voltage present with the flashhead
cable disconnected?
With input power removed, disconnect the
flashhead cable, apply power and measure as
described previously at TB2.
Yes
No
Inspect flashhead cable,
flashhead and marker interface
box (if installed) for damage.
Check PCB2, PS1 and PS2 for
damage. Replace as necessary.
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