Table of Contents
Advertisement
5
5.1
Introduction ........................................................................................................................................................ 5-1
5.2
Repair considerations ......................................................................................................................................... 5-1
5.3
Power-on test ...................................................................................................................................................... 5-2
5.4
Front panel tests ................................................................................................................................................. 5-2
5.4.1
KEYS test ................................................................................................................................................... 5-2
5.4.2
DISPLAY PATTERNS test ....................................................................................................................... 5-2
5.4.3
Character set test ........................................................................................................................................ 5-2
5.5
Principles of operation ....................................................................................................................................... 5-2
5.5.1
Display board ............................................................................................................................................. 5-4
5.5.2
Power supply .............................................................................................................................................. 5-4
5.5.3
Digital board .............................................................................................................................................. 5-6
5.5.4
Analog board .............................................................................................................................................. 5-7
5.6
Circuit board checks ......................................................................................................................................... 5-10
5.6.1
Display board checks ............................................................................................................................... 5-10
5.6.2
Power supply checks ................................................................................................................................ 5-11
5.6.3
Digital board checks ................................................................................................................................. 5-12
5.6.4
Analog board checks ................................................................................................................................ 5-13
6
6.1
Introduction ........................................................................................................................................................ 6-1
6.2
Handling and cleaning precautions .................................................................................................................... 6-1
6.2.1
PC board handling ...................................................................................................................................... 6-1
6.2.2
Solder repairs ............................................................................................................................................. 6-2
6.3
Special handling of static-sensitive devices ....................................................................................................... 6-2
6.4
Case cover removal ............................................................................................................................................ 6-2
6.5
PC board removal ............................................................................................................................................... 6-2
6.5.1
Digital board removal ................................................................................................................................ 6-3
6.5.2
A/D converter board removal ..................................................................................................................... 6-3
6.5.3
Analog board removal ................................................................................................................................ 6-3
6.6
Front panel disassembly ..................................................................................................................................... 6-4
6.7
Main CPU firmware replacement ...................................................................................................................... 6-4
6.8
Instrument re-assembly ...................................................................................................................................... 6-5
6.9
Assembly drawings ............................................................................................................................................ 6-5
7
7.1
Introduction ........................................................................................................................................................ 7-1
7.2
Parts lists ............................................................................................................................................................ 7-1
7.3
Ordering information ......................................................................................................................................... 7-1
7.4
Factory service ................................................................................................................................................... 7-1
7.5
Component layouts ............................................................................................................................................ 7-1
A
Specifications
B
C
iii
Hide quick links:
Advertisement
Table of Contents
