Adjustment Interaction - Agilent Technologies 4284A Service Manual

2-5. ADJUSTMENT INTERACTION

Some o f the H P 4284A adjustments are interactive. I f you repair o r replace a n H P 4284A
assembly, b e sure t o perform t h e related adjustment(s) i n t h e sequence given. Ta b l e 2 - 2
lists the adjustments required for each assembly repaired or replaced. I g n o r i n g or changing
the adjustment sequence will make it impossible to obtain optimum performance.
Assembly Replaced or Repaired
Al P o w e r Supply
A2 M o d u l a t o r
A3 R a n g e Resistor
A3 R a n g e Resistor (Opt. 001)
A4 H i - P W Amplifier (Opt. 001)
A5 S i g n a l Source
A6 V e c t o r Ratio Detector
A7 D i g i t a l Control
A9 K e y b o a r d
Al 1 M o t h e r Board
Al 3 D C -AC Converter
A20 H P - I B Interface
A30 H a n d l e r Interface (Opt. 201)
A31 H a n d l e r Interface (Opt. 202)
A40 S c a n n e r Interface (Opt. 301)
A51 B i a s Current I/F (Opt. 002)
A90 K e y b o a r d / D i s p l a y Control
A91 L C D Module
*: Option 001 o n l y
Table 2-2. Required Adjustments
Adjustments Required
(Paragraph Number)
2-8
2-12
2-9, 2-11, 2-12
2-9, 2-10, 2-11, 2-12
2-10, 2-11
2-11
2-11, 2-12
2-10*, 2-11, 2-12
None
None
None
None
None
None
None
None
None
None
2-3
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