Maintenance
4-8 DPO4000 Series Service Manual
FrontPanel
assembly
Mainboard
I/Oboard
assembly
Sidefans
assembly
Powersupply
assembly
Inverterboard
assembly
Display
assembly
FrontCase
assembly
Figure4 -2: Locator for internal modules
Removal Procedures
These procedures assume you have access to the module that you are removing.
Refer to theexploded drawings on pages 5 --4 through 5--12and to Figures 4--1
and 4--2,on pages 4--7and 4--8 to determinewhich trim and or modules to
remove.
CAUTION. Whenremoving or installing the keypad, make sure you do not touch
the switch contacts with your fingers. The oils in yourfingers will degrade or
damage the switch contacts. To help prevent damage to the keypad u se cotton
gloves when removingor installing the keyboard pad.