Agilent Technologies 8564EC Service Manual page 89

Manual Adjustment Procedures
1. IF Bandpass Adjustment
Figure 3-6 A5J6 Pin Locations
LC Bandpass Adjustments
4. On the spectrum analyzer, press
5. Read the voltage on A5TP5 (this is an empty-hole type of test point).
6. Repeat steps 1and 2until the voltage reads +6.16 Vdc ±100 mV.
If the range for the LC CTR adjustment is insufficient, replace the
NOTE
appropriate factory-selected capacitor as listed in
page
LC CTR adjustment and press
IF ADJUST STATUS message disappears, read the DVM display. Choose
a capacitor value from
reading and the presently loaded capacitor value.
lists a few capacitor part numbers.
Turn the spectrum analyzer off by pressing
CAUTION
before removing or replacing any shield.
7. Move the positive DVM lead to A5TP6.
8. Adjust A5L301 LC CTR 2 by repeating steps 4 through 6.
112
IF ADJUST STATUS message to disappear before continuing with the
next step.
If the voltage is less than +6.06 Vdc, turn A5L300 LC CTR 1
clockwise. If the voltage is greater than +6.26 Vdc, turn LC CTR 1
counterclockwise.
113. To determine the correct replacement value, center the
Table 3-5 on page
ADJ CURR IF STATE
Table 3-4 on
. After the
ADJ CURR IF STATE
113, based on the DVM
Table 3-8 on page 115
to the off position
LINE
. Wait for the
Chapter 3