Figure 13.8 Checking The Dc Converter With Microprocessor Control; Tait Electronics Limited September - Tait TB8100 Service Manual

Figure 13.8 Checking the DC converter with microprocessor control
battery control card
DC control card
indicator LEDs
PA outputs
reciter output
*auxiliary DC output connectors
original type
pins 5-8 pins 1-4
5 1
6 2
7 3
8 4
TB8100 Service Manual
© Tait Electronics Limited September 2006
standby power supply card
DC converter board
HVDC control and microprocessor card
later type
Note:
In order to show as much of the circuitry as possible
in the photograph, the heatsinks and the
components normally attached to them are not
fitted, and the plug-in cards are not plugged in.
Power Management Unit Fault Finding
DC on/off switch
on = up
off = down
+
DC input
–
auxiliary power
supply board
auxiliary DC output*
DC on/off switch
on = in
off = out
PFC control card
235