Display Screens Blank Upon System Power-Up - Dräger Narkomed 2B Service Manual

TROUBLESHOOTING GUIDE (continued)
GUIDE 9: Display Screens Blank Upon System Power-Up
START
CONNECT
CABLES
TO J3 & J4 ON
PROCESSOR
RETURN TO THIS MANUAL'S TABLE OF CONTENTS
ARE
N
DISPLAY SCREENS
BLANK UPON SYSTEM
POWER-UP?
Y
ARE
N CABLES
CONNECTED TO J3 & J4
ON PROCESSOR
BOARD?
Y
CHECK POWER
SUPPLY
VOLTAGES
AS OUTLINED IN
SECTION 3.1
ARE
N
DISPLAY SCREENS
BLANK UPON SYSTEM
POWER-UP?
Y
REPLACE
CRT ASSEMBLY
AS OUTLINED IN
PROCEDURE 4.27
RETURN TO CD-ROM TABLE OF CONTENTS
ARE
DISPLAY SCREENS
BLANK UPON SYSTEM
POWER-UP?
Y
REINSTALL ORIGINAL
CRT ASSEMBLY
-----------------------
REPLACE
PROCESSOR
ASSEMBLY
AS OUTLINED IN
PROCEDURE 4.26
ARE
DISPLAY SCREENS
BLANK UPON SYSTEM
POWER-UP?
Y
REINSTALL ORIGINAL
PROCESSOR
ASSEMBLY
CONTACT NAD
SERVICE DEPT.
3-12
NM2B
PERFORM A
N
COMPLETE PMS
ON UNIT
N
DOES UNIT
PASS PMS?
Y
UNIT IS
FUNCTIONAL
N
Rev. D