Thales 421 - Page 149

TEST DATA SHEET
LLZ/GP
Operation and Maintenance Maintenance
ILS 420
6−9Ed. 01.10
SOAC
Test Data Sheet: Shutdown Path testing (with ECU −0001/−0002)
Test Item Jumper set Purpose Action Expected Result Passed Failed
Prerequisite:
Equipment in ’Normal’ con-
dition, both TX on, TX1 main
ECU
−0001/−0002
On LCP: Switch
key lock switch to
’MAINTENANCE’.
− ’Monitor Bypass’ set
− Status ’Alarm’
(defeats the 20 s min. off time control)
TX1 J8:1−2, 9−10 Park position
Modulation shutdown path
(LGA1)
* GP active only
J8: 3−4
J8: 5−6
forces Syn 1
carrier gener.
remain ena-
bled:
Shutdown 1A
path will fail
Set ’TX1 off’.
check TP1, TP2
at MODPA1
2F equipment:
check TP1, TP2
also at MODPA2
− Shutdown 1B should act
− ECU shows ’Switch Fail’
− Alert warning ’ECU fault’
− SYN1: LED ’VCO off’ off
− CSB, SBO not present
(CRS)
− CSB, SBO not present
(CLR); GP: CLR, CSB2*
TX2 J10:1−2,9−10 Park position
Modulation shutdown path
(LGA2)
* GP active only
J10: 3−4
J10: 5−6
forces Syn 2
carrier gener.
remain ena-
bled:
Shutdown 2A
path will fail
Set ’TX2off’.
check TP1, TP2
at MODPA1
2F equipment:
check TP1, TP2
also at MODPA2
− Shutdown 2B should act
− ECU shows ’Switch Fail’
− Alert warning ’ECU fault’
− SYN2: LED ’VCO off’ off
− CSB, SBO not present
(CRS)
− CSB, SBO not present
(CLR); GP: CLR, CSB2*
ECU J8,J10 Set to park posit.
Set TX1 on and "TX2 on"
TX1 is main
Reset ECU . Clears the ECU fault:
− ’Switch fail’ is off
− ECU Fault maint. warning
is removed (time < 30 s).
TX1 J9:1−2,9−10 Park position
Syn. carrier shutdown path
(SYN1)
* GP active only
J9: 3−4
J9: 5−6
forces modu-
lation gener.
path (LGA1)
remain ena-
bled:
Shutdown 1B
path will fail
Set ’TX1 off’.
check TP1, TP2
at MODPA1
2F equipment:
check TP1, TP2
also at MODPA2
− Shutdown 1A should act
− ECU shows ’Switch Fail’
− Alert warning ’ECU fault’
− SYN1: LED ’VCO off’ on
− CSB, SBO not present
(CRS)
− CSB, SBO not present
(CLR); GP: CLR, CSB2*
TX2 J11:1−2,9−10 Park position
Syn. carrier shutdown path
(SYN2)
* GP active only
J11: 3−4
J11: 5−6
forces modu-
lation gener.
path (LGA2)
remain ena-
bled:
Shutdown 2B
path will fail
Set ’TX2 off’.
check TP1, TP2
at MODPA1
2F equipment:
check TP1, TP2
also at MODPA2
− Shutdown 2A should act
− ECU shows ’Switch Fail’
− Alert warning ’ECU fault’
− SYN2: LED ’VCO off’ on
− CSB, SBO not present
(CRS)
− CSB, SBO not present
(CLR); GP: CLR, CSB2*
ECU J9,J11 Set to park posit.
Set TX1 on and "TX2 on"
TX1 is main.
Reset ECU . Clears the ECU fault:
− ’Switch fail’ is off
− ECU Fault maint. warning
is removed (time < 30 s).
Set equipment to ’Normal’
condition, both TX ON.
Set key switch to
required mode.
Status ’Normal’, equipment is
in service again
Date: Sign: