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SG-60 High Intensity Strobe System 4-3 Manual EPM-00000019 Rev A
Are any LEDs
on Master
Controller lit?
All Flashheads stuck
in Day Mode
Yes
No
Replace MC Fuse F1.
Is Master
Controller
COM OK LED
lit? (DS34)
Visually examine MC for damage near TB5.
If damaged, replace Master Controller PC Board.
Otherwise, replace Master Controller chip U2.
No
Unplug MC TB5
Yes
Perform
Comm Wiring
Tests
2
.
Is
wiring OK?
Yes
Make sure only a single (a
top-level) Flashhead has
SW4-1 (TERM) set to on.
Check for shorts or breaks in
the communication cable.
No
Is Master
Controller
COM OK LED
lit? (DS34)
No Yes
No
Is Comm
Cable wired to
MC TB5
correctly
1
?
Yes
Troubleshoot each Flashhead
individually.
Correct wiring.
Check for shorts
between
communication
cable and power
wiring.
Does MC
show Green
FH Status
LEDs?
No
Yes
Does MC
show Green
PC OK LED
(DS28?)
Yes
Troubleshoot Flashheads
Individually.
No
Check Photocell Wiring.
If wiring OK, replace Photocell.
Figure 4-1: General Troubleshooting – All Flashheads Stuck in Day Mode
1
Per Section 2.4.2
2
Per Section 2.5.4 and page 4-2