HP 53131A - Page 148

Chapter 2 Service
Troubleshooting the Counter
2-52 Assembly-Level Service Guide
2
9If the FAIL message is displayed for a test, use Table 2-5 to
determine which assembly may need replacing.
10 Refer to Chapter 3, “Replacing Assemblies,” in this service guide
for dissasembly and reassembly procedures.
NOTE After replacing an assembly, perform the calibration procedures in this
chapter.
Table 2-5. Troubleshooting
Failure Indicator Assembly at Fault
DISP: FAIL A2 Display Board Assembly, or A1 Motherboard Assembly
CPU: FAIL A1 Motherboard Assembly
ROM: FAIL A1 Motherboard Assembly
RAM: FAIL A1 Motherboard Assembly
EEPROM: FAIL A1 Motherboard Assembly
HP-IB: FAIL A1 Motherboard Assembly
QSPI: FAIL A1 Motherboard Assembly, or A2 Display Board Assembly
FPGA: FAIL A1 Motherboard Assembly, or A2 Display Board Assembly
FR END: FAIL A1 Motherboard Assembly, or A4 AC Power Supply Assembly
MEAS: FAIL A1 Motherboard Assembly, or A4 AC Power Supply Assembly
INTERP: FAIL A1 Motherboard Assembly, or A4 AC Power Supply Assembly
KEYPAD: FAIL Keypad, or Front Panel Assembly, or A1 Motherboard Assembly.
PRINT: FAIL A1 Motherboard Assembly