Service manual

Testing the
Assembly
You can use the tests and checks in Table 4-2 to isolate the problem. See
Figures 3-1, 3-2, and 3-3 in Chapter 3 for locations of mechanical parts.
See the component locator included with this manual for locations of
electrical components.
Table 4-2. Agilent E1463A Tests/Checks
Test/Check Reference Designator Check:
Heat Damage - - - - - - - - - - Discolored PC boards
Damaged insulation
Evidence of arcing
Switch/Jumper
Settings
J101, J201
SP101
IRQ Level setting
LADDR setting
Switch Module
PCA
F601, F602
P1, P2, J1, J2
K0-K31
Fuse continuity
Connector contacts
Test 2-1, Closed Channel
Resistance Test
Checking for Heat Damage
Inspect the assembly for signs of abnormal internally generated heat such as
discolored printed circuit boards or components, damaged insulation, or
evidence of arcing.
Checking Switches/Jumpers
Verify that the logical address switch is set correctly (factory set at 120).
Verify that the interrupt priority jumpers are set correctly (factory set at
level 1).
Checking the Switch Module PCA
Check the following:
• Verify that fuses F601 and F602 are good.
• Check connectors J1, J2, P1, and P2 for damage.
• Perform Test 2-1 in Chapter 2.
Chapter 4 Service 47