Siemens SIRECUST 1280 Service Manual page 121

15 |
YES KEY
COORDINATES
APPEAR TO DRIFT
OVER TIME?
(6.71.4)
PERFORM TOUCHSCREEN
ACCURACY TEST.
REPLACE TOUCHSCREEN
PROBLEM WITH
AUDIBLE
TONES?
PROBLEM PZ
WITH SPEAKER
SOUNDS (SPKR) OR
PIEZO SOUNDS
OPERATOR YES
INTERFACE LEDS
TOGGLE FOR KEY
REPLACE 68705 (J9)
GN OPERATOR
INTERFACE BOARD.
IF PROBLEM IS
CHECK SPEAKER
ASSEMBLY AND
DISPLAY PROCESSOR
BOARD TO ISOLATE
TO
BLOCK
K
CHECK JUMPER JP90
ON MOTHER BOARD.
CHECK BATTERY/
MEMORY BACKUP BOARD
TO ISOLATE CAUSE OF
PROBLEM.
(6.71.3 - 6.71.4)