Service manual

Table 8-3. Agilent E1326B Tests/Checks
Test/Check Reference
Designator
Check:
Heat Damage - - - - - - - - - - Discolored PC boards
Damaged insulation
Evidence of arcing
Switch/Jumper
Settings
JM1, JM3
SW1
IRQ Level setting
LADDR setting
Frame CBL1, CBL2, CBL3
MP3, MP4, MP5, MP6
Cable contact damage
Panel binding posts
A1 Outguard
PCA
F1, F2
J1, J2, J3
P1, P3
XU23
Fuse continuity
Mating connector contacts
Connector contacts
IC contact/connections
A2 Inguard
PCA
J101, J102, J103
K104, K105, K106
XU104
Cable connector contacts
Relay opening/closure
IC contact/connections
Checking Heat Damage
Inspect the multimeter for signs of abnormal internally generated heat
such as discolored printed circuit boards or components, damaged
insulation, or evidence of arcing. If there is damage, do not operate the
multimeter until you correct the problem.
Checking Switches/Jumpers
Verify the logical address setting is set correctly (factory set at 24).
Verify the interrupt priority jumpers are set correctly (factory set at
level 1). See the Agilent E1326B/E1411B User’s Manual for information.
Testing Multimeter Frame
To test the multimeter frame, see Table 8-3 for guidelines to check
binding posts MP3, MP4, MP5, and MP6, and cables CBL1, CBL2, and
CBL3. If you need to remove and/or replace the binding posts, see
"Removing Binding Posts" in this chapter.
8-4 Service