HP E1328A Service Manual page 51

Chapter 8
Table 8-1. HP E1328A DAC Error Messages
No. Title
-330 Self-Test Failure
-240 Hardware Failure
-221 Jumper Settings
2801 Channel 1 current
checksum error
2802 Channel 2 current
checksum error
2803 Channel 3 current
checksum error
2804 Channel 4 current
checksum error
2805 Channel 1 voltage
checksum error
2806 Channel 2 voltage
checksum error
2807 Channel 3 voltage
checksum error
2808 Channel 4 voltage
checksum error
Table 8-2. HP E1328A Tests/Checks
Test/Check Reference
Designator
Heat Damage - - - - - - - - - -
Switch Setting SW1
A1 PCA F1, F2
J101 - J402
P1
TB1 - TB4
Checking Heat Damage
Potential Cause(s)
Module malfunction
Module malfunction
Channel's V/I jumper in incorrect position
Channel 1 stored adjustment constant
(current) is corrupted
Channel 2 stored adjustment constant
(current) is corrupted
Channel 3 stored adjustment constant
(current) is corrupted
Channel 4 stored adjustment constant
(current) is corrupted
Channel 1 stored adjustment constant
(voltage) is corrupted
Channel 2 stored adjustment constant
(voltage) is corrupted
Channel 3 stored adjustment constant
(voltage) is corrupted
Channel 4 stored adjustment constant
(voltage) is corrupted
Check:
Discolored PC boards
Damaged insulation
Evidence of arcing
LADDR setting
Fuse continuity
Mating connector contacts
jumper in wrong position
Connector contacts
Service 51