AMX-4 and AMX-4+ Error Codes Solutions Summary
Error 19
1. Usually Caused By Unit Traveling From Carpet To Tile Going On To
Elevators Driving Over Uneven Tile Floors - Non-Fatal
1. Recalibrate the Charger Board
2. Replace the Charger Board
3. ERROR 103 - Safety Contactor Contacts Stuck Closed
4. ERROR 104 - Refer to Service Note 3684
1. Check for defective crimp connections on the Main Harness Cable leads
between Drive Handle Assembly. Also check J8 plug to CPU.
2. Defective CPU or Drive Control/Drive Power Amplifier boards
3. Re-Cal Drive Handle with Drive Enable picked up, if can’t
Cal Drive Handle-Replace Handle Assembly
4. Shorted Diode on Brake Assembly
5. Defective Handle Enable Switch(es)
6. CPU 10V Ref. To Handle Transducers Missing Or Low
7. Possible Tube Park Latch Problem (Also Applies To Newer Hall Effect)
8. Drive Wheel Problems--Drive Belt, Foreign Material Buildup On Axle
9. Bumper Switch Problems
10. Bad Front Casters
11. Bad Motor Brushes - See NOTE 2 Below.
12. Bad LVLE Power Supply
13. Check R1 And R2 (Dynamic Brake Resistors) For
Proper Soldering/Connection
NOTE 1: Verify That On Older Units That FMI-10231 Was
Accomplished (Upgrading The Drive Control Board 46-232834G1-C/G1-D).
NOTE 2: Random 200 Series Errors Could Be Caused By Loose Connections At K1 And K2
Drive Relays, Or Bad Motor Brushes (single brush assembly is 2170759). Check For
Curled Fish-paper Insulator On Rear Of The Cassette Draw That Might Be Cutting Into The Cable Assemblies.
NOTE 3: Runs On Charger Board J2-5 To K215 And On Drive Amp Board J10 To K145 And J5 Or J6 To K145 Burned Open = Shorted Brake Assembly (CQA 911200)
NOTE 4: Stall LED(s) Lit On Drive Control Board -Try Re-Calibrating The Handle - Also Could Be Caused By Poor Ground Connections On AMX1A2TS1-4, 5, 6, Or 7 (Behind LVLE)
NOTE 5: “RELEASE HANDLE” Message And Unit Stops (Intermittent) - F9 Fuse/Fuse-holder Stressed
NOTE 6: AMX-4 Jerks Forward-Faster Than MAX Speed--+15vdc (LVLE) Dropped To +9vdc. Replace LVLE (T3497L). Refer To CQA 965947
NOTE 7: Unit Drives At Slow Speed Initially (NO Error Codes), And Eventually Gets Up To Proper Speed. SOLUTION: On Newer Style Base Assemblies, With The Newer Motor Mounting Assy. - Check For Drive Belt Tightness (The Motors Are NOT Spring-Loaded; They Are Tightened Down After The Proper Belt Tension Is Obtained.
1. Check F93 on Rotor Board
2. Check F7 on AMX1A3
3. Check for 60 Hz phase 1 signal at anode of CR53 and 60 Hz phase 2 signal at anode of CR66 on Rotor Board
4. Bad Rotor Board
5. Bad CPU Board
6. Check Rotor/Stator Cable
7. Bad CR179 on Filament/kVp Board
1. Recalibrate The Generator Only If The Exposure Time Is Longer Than 2 Msec And The KVP Is Less Than Or Equal To 75% Of Selected KVP
2. Check That K7 Contactor On AMX1A4 Panel Closes (Contacts Welded/Loose Leads/Bad Coil)/Verify Proper Microswitch (Aux) Closure (Contactor Kit 46-262695P5). A Faulty K7 Might Not Give Any Errors—But You Will Not Be Able To CAL THE CHARGER In The Calibration Mode. — As A Rule, If The Unit Was Manufactured Prior To 6-94, REPLACE The Contactor Assembly (46-262695P5)
3. FIL/KVP Board May Be Defective
4. 1 KHZ Board May Be Defective
5. Loose Connectors On FIL/KVP Or 1KHZ Board
6. Stop/Start SCR Q3 On AMX1A4 Panel May Be Defective
7. If EXP START Is Shaky Or Hi All The Time (It Should Be A Pulse), Troubleshoot The EXP START CMND Circuit On The 1 KHZ Board
8. Verify That The Tap Relays Contacts Are Coming In Firmly - No External Interference (Fish-paper Loose/Curled On Inside Side Cover?)
9. Loose Leads On Service Toggle Switch (Not Going To Applications)
10. Bad CPU Board
11. Bad Rotor Board
12. Bad High Voltage Transformer
13. Loose Anode OR Cathode High Voltage Cable-Spread Pins At Both Ends Of Cathode HV Cable
14. P1/P2 Leads Exhibit Leakage To Ground
15. 439 And 462 Errors Together Indicate Battery/Cell Problems
16. 439 And 43E Errors - Replace FIL/KVP And 1KHZ Boards - Check Fil. H/V Cable
17. AMX1A4C5 Leaky To Ground
18. Refer To Item 19. -- 469 ERROR Listing
19. AMX1A4C6 Bad (FIL/KVP Bd. J8 Pins 1 & 2)
20. Soft Batteries/Cells
21. Bad Main SCR(s) Q1 Or Q2
22. Bad AMX1A4R7 (Auto-Transformer)
23. Bad Tap Relay(s) – Check The K6 Tap Relay For Good Normally Closed Contacts
