Diagnostic Program; Introduction - Casio PA-2400U Service Manual And Parts List

DIAGNOSTIC PROGRAM

Introduction

The following steps must be followed before diagnostics.
Press RESET
button and then
ON
Replace
batteries with
new ones
START
Remove Main
and Backup
batteries
Load main
batteries
Press ON
Display appear?
NO
NO
Display appear?
Display appear?
NO
Repair needed
— 44 —
Be sure to keep separate back-up copies of
all important data in PA-2400U, because the
DIAGNOSTICS make data corrupt.
Make sure that Battery Holder Release
switch is on "NORMAL OPERATION" side.
YES
YES
YES
To Diagnostic