CPX-950
Midtronics BV Hoofdveste 6-8 3992DG Houten
28
8 – Maintenance & Troubleshooting
Willowbrook, IL USA
Phone: 1.630.323.2800
Canadian Inquiries
Toll Free: +1 1 866 592 8052
MIDTRONICS HEADQUARTERS
MIDTRONICS B.V. EMEA
MIDTRONICS CHINA
MIDTRONICS INDIA
European Headquarters
Houten, The Netherlands
Serving Europe, Africa, the Middle East
Phone: +31 306 868 150
China Operations
Shenzhen, China
Phone: +86 755 2374 1010
Navi Mumbai, India
Phone: +91 22 27564103/1513
Asia/Pacífic (excluding China)
Contact Corporate Headquarters
Phone: +1.630.323.2800
167-000929EN-A 19/06
©
2019 Midtronics, Inc. All rights reserved.
PATENTS
LIMITED WARRANTY
This product is made by Midtronics, Inc., and is protected by one or more U.S. and
foreign patents. For specific patent information, contact Midtronics, Inc. at +1 630 323-
2800.
Midtronics products are warranted to be free of defects in materials and workmanship
for a period of two (2) years from date of purchase. Midtronics will, at our option, repair
or replace the unit with a re-manufactured unit. This limited warranty applies only to
Midtronics battery testers and does not cover any other equipment, static damage, water
damage, overvoltage, dropping the unit, or damage resulting from extraneous causes
including owner misuse. Midtronics is not liable for any incidental or consequential
damages for breach of this warranty. The warranty is void if owner attempts to
disassemble the unit or to modify the cable assembly.
Excluding cables.
Diode Test Results
Decision
Action
EXCESSIVE
RIPPLE
One or more diodes in the alternator are not functioning or there is stator damage, which is
shown by an excessive amount of AC ripple current supplied to the battery.
√
Make sure the alternator mounting is sturdy and that the
belts are in good shape and functioning properly. If the
mounting and belts are good, replace the alternator.
OPEN PHASE
Replace the alternator.
OPEN DIODE
SHORTED DIODE
Decision
Color
Example
500 Rated
Good Battery
= 450 measured
Good Recharge
= 250 measured
Charge and Retest
N/A
Replace Battery
= 150 measured
Badcell, Replace
= 0 measured
The circle size is based on a (calculated) charged battery condition.
