top of page

Troubleshooting AMX

Error Number
LOSS OF CAL DATA (NVRAM)
Error Code / System Message
​
Error Question
How do I troubleshoot loss of cal data (nvram) on the AMX-4 Series?
Short Answer
1) Static problems: refer to Error 437, Step 4. 2) Check LVLE problem (+24 VDC); refer to FMI-10359 for original supplies. 3) Check +24 V for glitches. 4) Check Display/Display Controller; newer Display Board 46-232832G1 per Service Note 3611. 5) Park Switch Latch metal shavings can short +24 V to ground; use Hall Effect Latch Kit 46-316198G1. 6) Check NOVRAM lithium battery drop-off. 7) Check for metal shavings/fine powder on CPU Board. 8) Replace old-style LVLE with T3497L. 9) Exercise collimator blades and flex cable at rear of collimator while scoping the +24 V pin on LVLE output.
Possible Causes
1. Static Problems - Refer To ERROR 437, Step 4. 2. LVLE Problem (+24 VDC)—Refer To FMI-10359 For Original Supplies 3. +24 Getting “Gliched” 4. Bad Display/Display Controller (Newer Display Board 46-232832G1 Per Service Note 3611) 5. Park Switch Latch (Metal Shavings) = Short +24 To Ground - Get New Hall Effect Latch Kit 46-316198G1 6. NOVRAM Lithium Battery Drop-off 7. Metal Shavings (fine powder) On CPU Board 8. Replace “old” Style LVLE With T3497L 9. Exercise Collimator Blades And Flex Cable At Rear Of Collimator While “Scoping” The +24 Volt Pin On The Output Of The LVLE
Troubleshooting Steps
1. Static Problems - Refer To ERROR 437, Step 4. 2. LVLE Problem (+24 VDC)—Refer To FMI-10359 For Original Supplies 3. +24 Getting “Gliched” 4. Bad Display/Display Controller (Newer Display Board 46-232832G1 Per Service Note 3611) 5. Park Switch Latch (Metal Shavings) = Short +24 To Ground - Get New Hall Effect Latch Kit 46-316198G1 6. NOVRAM Lithium Battery Drop-off 7. Metal Shavings (fine powder) On CPU Board 8. Replace “old” Style LVLE With T3497L 9. Exercise Collimator Blades And Flex Cable At Rear Of Collimator While “Scoping” The +24 Volt Pin On The Output Of The LVLE
Parts Areas to Check
CPU Board; Display Board; Battery
For Related Models
AMX-4, AMX-4+, Definium AMX 700
bottom of page