Section A. Introduction; How To Use This Manual - JLG 1250AJP Troubleshooting Manual

A.1 HOW TO USE THIS MANUAL
Troubleshooting system problems can be difficult. System wiring and hydraulic diagrams are provided in this book to help
isolate problems.
Follow the flow chart of Figure A-1. Troubleshooting Flowchart on Pg. 3. Only perform calibrations when indicated in proce-
dures or in section 5.1 Calibration Instructions on Pg. 289.
Each troubleshooting step setup is specified in the step instructions and applies only to that step. Any special wiring, dis-
connected connectors, programming modes, etc. should be removed, re-connected, restored, etc. after completing
the step unless directed otherwise. Some procedures call for swapping components, connections, etc. All instructions to
repair refer to the machine as assembled before the procedure started. Reinstall to proper locations all swapped compo-
nents, connections before repairing machine.
When a function will not operate with the same speed or power as a machine in good working condition, refer to the topic
which most closely describes the problem.
Conclude each session by rerunning the system test, checking for other problems.
If this method does not identify the problem, contact the factory for assistance.
Using Analyzer,
Run Platform and
Ground System
Tests
"Ground/
Everything OK"
Yes
No
Using Analyzer,
find logged Help
Messages
3128411

SECTION A. INTRODUCTION

Start
Is Distress
No
Lamp Blinking?
No
Troubleshoot by
Help Message in
Section 1
Identify Fault
Repair Machine
Problem
Solved?
Yes
Done
Figure A-1. Troubleshooting Flowchart
1250AJP
Plug in Analyzer
Yes
and read Help
Message
INTRODUCTION
A-3