E-73-2-E
Power Indicator LED (red)
PL1
P1
0VA
0VB
CLK
TP2
TP1
J1
1
2
J5
1 J4 2
J2
J3
Selector board
455901□0□
Power supply board
455004□01
Distributor board
455004603
◆Internal Component Locations
Symptom
Check
Possible Causes
Power indicator lamp
(LED) fails to come on.
1. Inspect the power supply board.
Is power source type (AC/DC) in
conformity with the power supply
board?
2. Make sure of power source voltage. Is
an 85 to 246VDC (50/60Hz) power or
20 to 30V dc power Impressed across
terminals 11 (+) and 1 ( − )?
1. Power supply board is improper.
2. Line voltage is improper.
3. A fault In the internal power
board.
No pulse output.
1. Input signal line correctly wired?
2. Input signal coming in?
3. Pulse generator valid on the pulse
generator select board ?
1. Input wiring is incorrect.
2. Pulse generator is at fault.
3. Pulse generator select board is
incorrect.
4. Power supply board or pulse
g e n e r a t o r s e l e c t b o a r d o r
distributor board in the internal
assembly is at fault.
6. PREPARATION AND OPERATION
(1) Ensure that the pulse distributor and related equipment are correctly installed and wired with
no place left unfinished.
(2) Supply power to this instrument and make sure to see that the power indicator (red LED)
comes on.
(3) Initiate operation by allowing the fluid to run.
Make sure to see that the power terminals are connected to a power source of the
rated voltage. Applying a power of incorrect voltage could ruin your instrument.
7. QUICK TROUBLESHOOTING
● If the trouble is suspected to be internal to the distributor, seek our service.
Fig. 7.1
WARNING
