Agilent Technologies 4284A Service Manual page 17

SECTION 3. ASSEMBLY SERVI CE I NFORMATIONS
3-1 . I NTRODUCTION
3-2. SAFETY CONSIDERATIONS
3-3. RECOMMENDED TEST EQU IPMENT
3-4. AFTER SERVICE PRO DUCT SAFETY CHECKS
3-5. ASSEMBLY DESIGNATIONS AND LOCATIONS
3-6. REPLACEABLE MECHAN ICAL PARTS LIST
3-7. TOOLS AND FASTEN ERS
3-8. DISASSEMBL Y
3 - 8-1 .
3-8-2 .
3-8-3.
3-8-4.
3-8-5.
3-8-6.
3-8-7.
3-8-8 .
3-9.
THEORY OF OPERATION
3-9-1 .
3-9-2.
3-9-3 .
3-9-4.
3-9-5.
3-1 0. FAULTY BOARD ISOLATION
3- 1 0-1 .
3-1 0-2.
3-1 0-3 .
T ABLE OF CONTENTS
Top Cover Removal
A 1 Assembly Removal
Removing the A2 , A3, A4, A5, A6, A7
A20 , A30 , A3 1 , A40, A50 assemblies
Front Panel Disassembly
A9 or A90 Assembly Removal
A 10 Assembly Removal
A 1 3 Assembly Removal
A91 (LCD module) Assembly Removal
Power Supply Block Section
Digital Control Block Section
Source Block Section
Transducer Block Section
Vector Ratio detector Section
Self Test
Faulty Board I solation Program
Faulty Board I solation Procedure
3-1
3-1
3-1
3-1
3-2
3-3
3-5
3-1 6
3-1 6
3-1 6
3-1 7
3-1 7
3-1 8
3-1 8
3-1 8
3-1 9
3-1 9
3-21
3-21
3-23
3-25
3-27
3-30
3-35
3-35
3-38
3-40