Service manual

2-10 June 21,2004
DECODER NP88 FLEX
Troubleshooting
No Vibrator Alert
Ensure the following before initiating this troubleshooting procedure:
a. Verify the pager is in silent mode.
b. Check the options set with the Pager Programming Software to ensure
vibratoralertsareenabledandthe“CompletelySilent”pageroptionisnot
set.
c. Verify that there i s no flux or other residue on either the circuit board or
vibrator contacts.
Figure 2-10. No Vibrator Alert Troubleshooting
Flowchart, FLEX Decoder
FAIL
FAIL
FAIL
OK
OK
NO VIBRATOR ALERT
REPLACE SPRING
CONTACTS, MOTOR
REPLACE Q1
R5
REPLACE
DECODER BOARD
CHECK SIGNAL AT
µC
PIN 18
APPLY 1.3 V ACROSS
THE VIBRATOR
TERMINALS TO CHECK
SPRING CONTACTS AND
VIBRATOR MOTOR