Specifications

6-40 888-2500-001 5/2/2013
WARNING: Disconnect primary power prior to servicing.
DAX-1/DAX-3
Section 6 Troubleshooting
PA Module OVERLAP TP16 Deadband overlap fault indicated Fault =
High
PA Module HIGH_DRV TP17 Chopper high drive level 0-60Vdc
PA Module LOW_DRV TP18 Chopper low drive level 0-12Vdc
PA Module +VC TP19 Floating supply >9Vdc
PA Module +VB TP20 Floating supply >9Vdc
PA Module V_PULSE_XFMR TP21 Pulse transformer voltage level 4.8Vdc
PA Module -VC TP22 Floating supply >9Vdc
PA Module +VA TP23 Floating supply >9Vdc
PA Module -VA TP24 Floating supply >9Vdc
PA Module -VB TP25 Floating supply >9Vdc
PA Module PA ON
PA FAULT
DS1 PA On = green LED
Key Inserted = Amber
PA Fault = red LED
(on front of PA module)
Output
Monitor
TEST TP1
DS1
Testpoint to tune for null at test
Red LED illuminates to indicate Test
mode
Lowest
possible
Vdc value
1-phase PS
Controller
FILTERED
AC SAMPLE
TP2 Filtered AC sample 5.5VAC
1-phase PS
Controller
AC SAMPLE TP3 Input AC sample from transformer
secondary
7VAC
1-phase PS
Controller
DC CURRENT
SAMPLE
TP4 DC representation of current 0.0 - +1.6
Vdc
1-phase PS
Controller
FAN DRIVE TP5 Active when PAs are on +48Vdc
1-phase PS
Controller
+48V TP6 Input from +48V power supply +48Vdc
1-phase PS
Controller
+12V TP7 Input from +12V power supply +12Vdc
Table 6-2 DAX Testpoint & LED Information Table
(All voltages listed are ±5%)
On Board... Name TP(n)
or
LED
Function, Display
and/or
(Comment) or (Related Potentiometer)
Nominal
Value