Harris Platinum Z2 CD - PS#_CONFIG, Configuration Fault; Ps1_Jump; PSC#+20 V, Fault

6-28 888-2406-002
WARNING: Disconnect primary power prior to servicing.
Troubleshooting
• IPA_LOW
• EXC#_AFC
These faults are incidental and simply occur due to the timing of when the phase
loss occurs and which components see it first.
6.12.2.5 PSC#+20V, Fault
+20 Volts supply fault. Since this voltage is of paramount importance for the
operation of the controller (without it no analog reading can be carried out) it is
continuously monitored by the watchdog IC (MAX 705). If it is below 12 volts the
fault is tripped. Troubleshooting will require tracing the +20Vdc back to the Low
Voltage Supply to find out where it is being lost.
6.12.2.6 PS#_CONFIG, Configuration Fault
The controller is continuously checking the configuration, meaning the number of
supplies connected and their identification numbers (ID), as part of this process a
check of the valid configurations is also carried out, not allowing any power supply
number above 4 or two equal ID numbers. The Supply number is set by Jumpers
JP1, JP2 and JP3 on the Rectifier Boards as follows:
6.12.2.7 PS1_JUMP
• If a power supply tap fails and the next one available is two or more taps away a
JUMP fault is triggered and the transmitter is shut off. The only situations where
this could happen are:
• If operating in tap 1 and it fails, having previously failed tap 2.
• If tap 2 is being used and fails, and tap 1 and tap 3 have failed previously.
• If tap 3 is being used and fails, and tap 2 and tap 4 have failed previously.
Power Supply ID Chart
PS#1 PS#2
JP1 IN OUT
JP2 OUT IN
JP3 OUT OUT