Specifications

5/2/2013 888-2500-001 5-17
WARNING: Disconnect primary power prior to servicing.
Section 5 Maintenance and Alignments
DAX-1/DAX-3
Figure 5-5 Meter Screen
STEP 30 On the Power Supply Controller board, adjust R47 for a -12V (±5%)
reading on this screen
5.6.2 SCR Controller Board
The following procedure explains in detail the necessary steps to replace an SCR
Controller board. It is recommended that the technician read through these instructions
prior to proceeding with this replacement.
STEP 1 Turn off transmitter
STEP 2 Turn off AC power at CB1
STEP 3 Remove Enerpro SCR Controller board to be replaced
STEP 4 Install new SCR Controller board
STEP 5 Connect the positive lead of a DC voltmeter to the test point labeled “B+
SAMPLE” (TP20) on the Power Supply Controller board
STEP 6 Connect the negative lead of the DC voltmeter to a test point labeled
“GND” on the Power Supply Controller board
STEP 7 Connect a PC to the DAX and set up the VT100 emulation as outlined in
section "5.5.1 VT100 Calibrations and Alignments" on page 5-8 above
STEP 8 Turn on transmitter AC power at CB1
STEP 9 Call, or hit "Enter" twice to initiate handshake between DAX and PC
STEP 10 Use Left/Right arrow to go to sheet 5 of the VT100 screens
STEP 11 On page 5 (see "5.5.1 VT100 Calibrations and Alignments" on page 5-8)
of the VT100 screens hit the “M” key
STEP 12 Use the down arrow key on the keyboard to lower the B+ DAC value
about 20 counts
STEP 13 Press the “Enter” key to store this temporary value
STEP 14 Operate the transmitter at the following power level setting:
•DAX-1: 1kW