2
1. No power available
NO
NO
Is the POWER LED
Is the power cord plugged to
Make correct connections
lit normally?
the wall outlet correctly?
with the wall outlet.
YES
YES
NO
Is 100V AC on the output
The POWER unit is out of
fuses F1 and F2?
order.
YES
NO
Is +7V available at Pin 1 of
Disconnect the PW, PQ, and
the PM connector (M +7V
RS connectors from one
system)?
after another, and check
w7V is available.
If it is available, the circuit
beyond the disconnected
connector is out of order.
If it is not available even
after all the three connectors
have been disconnected,
something is wrong in the
POWER unit or the MAIN
YES
PWB.
NO
Is +5V available at Pin 2 of
S2601 (PWR PWB) and its
IC9502 (MAIN PWB)?
associated circuits are out
of order.
A
YES
NO
From A of “Flashing in green
Is +5V available at Pin 5 of
A +5V line is out of order
and red” (Cracks in the panel
the LD connector, Pin 4 of the
as far as its LED PWB,
detected) (P. 4)
PW connector, and Pin 5 of
PWR PWB, and 232C PWB.
the RS connector?
YES
IC9501 and its peripheral
circuits are out of order.
(Caution) When an LED is flashing (in the case of protector in operation), all power lines other than
the M+7 system are automatically turned off. When checking these power lines other than
the M+7 system, do it after connecting a circuit tester or the like to the measuring point,
without fail.
Flashing in green : Go to (1)
(Fan error detected)
Flashing in red
: Go to (2)
(Temperature error detected)
Reciprocally flashing in green
and red
: Go to (3)
(Cracks in the panel detected)
Lit in green
: Go to (4)
Summary of Contents for PlasmaSync 50MP1
Page 1: ...USE THIS SERVICE MANUAL WHEN SERVICING Model PLA 50V1 ...
Page 10: ...PlasmaSync Plasma Monitor User s Manual NEC Technologies ...
Page 64: ...TROUBLESHOOTING 4 1 ...
Page 80: ...METHOD OF ADJUSTMENTS 5 1 ...
Page 98: ...CIRCUIT DESCRIPTION 6 1 ...
Page 113: ...METHOD OF DISASSEMBLY 7 1 ...
Page 134: ...PACKAGING 8 1 ...
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Page 147: ...PART LIST 9 1 ...
Page 158: ...CONNECTION DIAGRAMS 10 1 ...
Page 160: ...BLOCK DIAGRAMS 11 1 ...
Page 163: ...SCHEMATIC DIAGRAMS 12 1 ...
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