User`s guide

8-3
voltage selector switch is in the correct position. Select either 115 (90-140) or 230 (180-
280) VAC, depending upon the actual line voltage to be used.
5) At this point it is assumed that the input section to the power supply is operational
and that the green LED is illuminated. Connector J3 should be removed and the
voltmeter attached across the header pins of J3 with ‘minus’ at J3-1 and ‘plus’ at
J3-2. Verify that the voltage measures approximately 5.86 volts DC. If not, then this
indicates that there is a circuit fault on the power supply board and that it will need to
be swapped-out with a replacement.
6) Additional troubleshooting (if any) will need to be performed at a repair depot.
Contact Metretek for repair or replacement of defective power supply boards.
8.4 Troubleshooting the GUTC Board
If the unit appears to be working but can’t place a cellular call, see the next section.
If the unit appears to be working but can’t communicate with the ANSI meter, check the
wiring at the “TB2” terminal block. Refer to Chapter-2 for wiring diagrams between the
ANSI meter and the DCM-200.
Jumper block JP2 has a number of configuration jumpers pre-installed from the factory
at positions ‘A’, ‘G’, and ‘H’. These should not be changed from their default settings
unless specifically told otherwise. Make sure they are present.
Using a computer and the program called MP32 (see Chapter-5) read the configuration
from the unit and check that all parameters are correct. For instance, if the phone
number is incorrect the unit will never be able to contact the central computer.
Otherwise there are no components that can be replaced in the field other than the radio
itself, and board replacement is recommended. Contact Metretek for repair or
replacement of defective GUTC boards
8.5 Troubleshooting the Cellular Radio
Before replacing a radio, try a different SIM card or antenna. In Chapter-7 we described
the various LED flash patterns that indicate the state of the radio and of the cellular
connection. If the DCM-200 can initialize the radio and has adequate signal strength,
but can’t complete a connection, the problem could be with the cellular service provider.
Replacement of a defective cellular module is a delicate task that should be performed in
an office or service department setting whenever possible. Three screws and nylon
standoffs are used to secure the radio module to the GUTC circuit board. When
CAUTION
Install the metal safety shield after the trouble-shooting work is complete. This will
prevent accidental contact with potentially lethal AC voltages.