LLZ 421
Operation and Maintenance
Repair
ILS 420
6−39
Ed. 01.10
SOAC
6.6.5
List of DIP−FIX−Switches and Jumpers
6.6.5.1
General
Some of the subassemblies have DIP−FIX switches or jumpers on the component side. The jumpers
act either as on/off switches or as changeover switches. The DIP−FIX switches and jumpers can be
set or placed to particular positions in order to adapt universal subassemblies to specific equipment
types. Other switches or jumpers must be actuated for test and maintenance purposes, or in case
of interconnection with a DME. Under normal climatic conditions it is not necessary to solder the
DIP−FIX switches in their limit positions.
NOTE:
Before installing a spare subassembly check and correct if necessary position of the DIP−
FIX switches and jumpers.
Overview of subassemblies containing DIP−FIX switches and jumpers:
No.
Subassembly
Short name
Reference number
1
2a
2b
3a
3b
4
5
6
7
8
9
10
11
Synthesizer
Localizer/Glide Path Audio Generator
Localizer/Glide Path Monitor
Localizer/Glide Path Audio Generator
Localizer/Glide Path Monitor
Executive Control Unit
Executive Control Unit
Local Control Panel
Low Voltage Sense board (on BP−PS)
Stby and On−Air Combiner
PIN−Diode Transfer Switch
Voice Amplifier ILS (optional)
Switched or dedicated line modem (opt)
Dedicated or Party line modem (option)
LLZ/GP Monitor Interface
SYN
LG−A
LG−M
LG−A
LG−M
ECU
ECU
LCP
LVS
SOAC
−
VAM−ILS
LGM28.8
LGM1200D
INTFC
120496−0002 (83138 22100)
120570−0003 (83138 23101)
120570−0003 (83138 23101)
120570−0004
120570−0004
120571−0001 / 120571−0002
(
83138 25100)
120571−0003
83135 21001
83138 30511
120621−0001 (83138 27100)
120622−0002 (83138 28100)
83138 30700
84045 83245
84045 83233
120628−0001
Ref. No. in brackets () represent previous/alternative german reference numbers.
Summary of Contents for 421
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Page 54: ...LLZ 421 Installation Operation and Maintenance ILS 420 2 26 Ed 01 04 SOAC Ed 01 10 ...
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Page 66: ...LLZ 421 Installation Operation and Maintenance ILS 420 2 38 Ed 01 10 SOAC ...
Page 90: ...LLZ 421 Operation Operation and Maintenance ILS 420 3 24 Ed 01 10 SOAC ...
Page 148: ...LLZ GP Maintenance Operation and Maintenance ILS 420 TEST DATA SHEET 6 8 Ed 01 10 SOAC ...
Page 156: ...LLZ 421 Maintenance Operation and Maintenance ILS 420 6 14 Ed 01 10 SOAC ...
Page 216: ...LLZ 421 Alignment Procedure LLZ 1F LPD Operation and Maintenance ILS 420 7 8 Ed 07 08 SOAC ...
Page 238: ...LLZ 421 Alignment Procedure LLZ 2F LPD Operation and Maintenance ILS 420 8 8 Ed 07 08 SOAC ...
Page 256: ...LLZ 421 Alignment Procedure LLZ 2F LPD Operation and Maintenance ILS 420 8 26 Ed 07 08 SOAC ...