SPECIFICATIONS ................................................................................................................ 1
TO REPLACE THE BATTERY ............................................................................................. 2
ERROR MESSAGE ............................................................................................................... 3
BLOCK DIAGRAM ................................................................................................................ 8
CIRCUIT EXPLANATIONS
System chart ................................................................................................................. 9
Power supply circuit .................................................................................................. 10
RAM pin descriptions ................................................................................................ 15
DIAGNOSTIC OPERATION................................................................................................ 16
TROUBLESHOOTING ........................................................................................................ 21
Main PCB .................................................................................................................... 23
Display PCB ................................................................................................................ 25
Key Matrix ................................................................................................................... 26
PARTS LIST ........................................................................................................................ 29
ASSEMBLY VIEW .............................................................................................................. 31
CONTENTS