Service manual

150 7
Service Related Menus
DIAGNOSTIC TEST Menu
INTERNAL TEST
This group of tests run without external connections or operator interaction. All return a
“PASS” or “FAIL” indication on the display. Except as noted, all are run during the power
on self-test.
0: ALL INTERNAL
Runs only when selected. It consists of internal tests 1 through 16. If any of these tests fail,
this test displays the “FAIL” status indication. Use the RPG knob to scroll through the tests
to see which test failed. If all pass, the test displays the “PASS” status indication. Each test
in the subset retains its own test status.
1: A1 CPU
Runs only when selected. It verifies the following circuit blocks on the A1 CPU:
• Flash Memory Check Sum
• EEPROM Check Sum
• Digital Signal Processor (DSP)
• System Timer
• Real Time Clock
• Front key Controller
• Flexible Disk Driver Controller
• GPIB Controller
• mini-DIN Controller
• Ethernet Controller
• PC Card ATA Controller
2: A1 VOLATILE MEMORY
Runs only when selected. It verifies the A1 volatile memories:
• DSP SRAM
•Dual Port SRAM
• Backup SRAM
At the end of the test, the analyzer is set to the power-on default state because the data in
the tested memories has been destroyed. During this test, a test pattern is written into the
memories and then the pattern is read back and checked.
If the test fails, the test displays an error message for a few seconds and then sets the
analyzer to default state. The error message indicates the faulty memory.
3: A1 FLASH DISK
Runs only when selected. It verifies the flash disk circuit block on the A1 CPU.
4: A51 GSP
Runs only when selected. It verifies the GSP chip and VRAM circuit blocks on the A51
GSP.