Technical Manual

PAGER
SUSPECT
FIT A NEW BATTERY
AND SWITCH ON.
IS THE ‘SWITCH ON’ MESSAGE
IS DISPLAY BLANK
OR CORRUPTED?
CORRUPTED EEPROM.
RE-PROGRAM. RE-TEST.
CORRUPTEDBLANK
NO YES
SEQUENCE?
IS BEEP AUDIBLE
AT SWITCH-ON?
IS BEEP AUDIBLE
AT SWITCH-ON?
DE-CASE AND CHECK
DISPLAY MODULE, V
DD
AND
YESNO
DE-CASE AND CHECK
SP401, TR416, TR415.
YES
NO
INTERCONNECTIONS.
DE-CASE AND CHECK
DISPLAY, V
DD, IC1, IC3, IC4,
AND POWER SUPPLIES.
'A'
'A'
'B'
'A'
TAG11127-1
TLA 852/FLA 872
TM1205 Issue 2 Page 5 - 11
Figure 5.5: Fault Finding Guide (Sheet 1 of 3)