5-16
888-2406-002
WARNING: Disconnect primary power prior to servicing.
Maintenance and Alignment
STEP 6
Turn on the AC at the wall breaker but do not turn the transmitter on
yet. Make sure CB1, the circuit breaker in the rear of the transmitter
is also turned on.
STEP 7
Setting the +5V REF - with a digital voltmeter, check TP4, the +5V
REF(reference). The voltage should be 5.00V, +/- 0.01V. If not,
adjust R28 to make it so.
STEP 8
IPA Current Fault Adjustment - this adjustment only affects
operation in Life Support Mode. Adjust R23 on the Life Support
Board for 2.9Vdc at U3-7. This is sets the fault threshold to 10.0
amps of IPA current.
STEP 9
RFL PWR Overload Adjust - this adjustment only affects operation
in Life Support Mode. Adjust R24 on the Life Support Board for
2.1Vdc at U3-5. This sets the fault threshold to 60 Watts of reflected
power when Life Support Mode is active.
STEP 10
Set R127 Maximum CW. This sets power output at a minimum.
STEP 11
Set R128 Maximum CCW. This reduces the sensitivity of the VSWR
circuit.
STEP 12
Set R25 Maximum CCW.
!
WARNING:
TURNING R128 MAXIMUM CCW DEFEATS THE VSWR PROTECTION. THE
REFLECTED POWER CALIBRATION SHOULD THEREFORE BE DONE FIRST TO
PREVENT DAMAGE TO THE TRANSMITTER (TRANSMITTER POWER IS ONLY
RAISED TO 60 WATTS FOR THE REFLECTED POWER CALIBRATION).
STEP 13
Power Calibration - complete the Reflected Power Calibration and
then the Forward Power Calibration procedures located earlier in
this section then return here to finish replacement of the Life Support
Board.
STEP 14
Set switch S1-9 on the Master Controller to the ON position to place
the transmitter in Life Support Mode (the fan will switch to high
speed). Adjust R25, Manual PWR Reference on the Life Support
Board for 500W on the external meter. Switch S1-9 to OFF and the
transmitter should return to your normal TPO. It may be necessary to
raise or lower power slightly.
Summary of Contents for Platinum Z2 CD
Page 4: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 6: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 8: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 10: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 70: ...3 14 888 2406 002 WARNING Disconnect primary power prior to servicing Operator Guide ...
Page 130: ...4 60 888 2406 002 WARNING Disconnect primary power prior to servicing Overall System Theory ...
Page 194: ...6 38 888 2406 002 WARNING Disconnect primary power prior to servicing Troubleshooting ...
Page 196: ...7 2 888 2406 002 WARNING Disconnect primary power prior to servicing Parts List ...