Problem Isolation Charts (Pics) - IBM 3270 Maintenance Manual

Problem Isolation Charts (PICs)
How To Use
Always begin with "Start" on Page 3-5-1.
STAKf
This is the entry point for using all of the PICs. You may
have an error code. an audio error during poweron self test
(POST). an undetermined problem. or a problem related 10
one device
"Start" will direct you to the PIC appropriate to
your failure indication.
Printer
System Board
You have entered this PIC because"
OU
were unable to
Undetermined Problems
You have entered this PIC because you were unable to
complete the POST or you have an intermittent problem. It
is assumed that you have a functional wall outlet and line
cord.
~rror message,
lXX,
h to OFF. Verify forms
Move print head to left·
ter Power switch to ON.
nd Online lights on?
These PICs will guide you through a series of
steps and the use of the Diagnostics diskette to
identify the failing FRU.
SECTION
s.
REMOVALI
REPLACEMENT AND
ADJUSTMENTS
The "Removal/Replacement and Adjustments"
section will help you to complete the repair.
2-8 Maintenance Information