Keypad Replacement
325511R
Reference: Use this instruction with replace-
ment part 325511R.
Tools Needed: Phillips screwdriver, flat-
bladed screwdriver, adjustable
wrench, static grounding
(earthing) wrist strap (includ-
ed).
Warning-Hazardous Voltage
Warning-Internal components may
be damaged by static electricity. A
static grounding wrist strap must be
worn during this replacement proce-
dure.
CAUTION: Improper connections
may cause damage to the instrument.
Instruction:
1. Turn off the power and unplug the instru-
ment.
2. Remove the screws securing the head
cover, and remove the cover.
3. Remove the screws securing the instru-
ment cover, and remove the cover.
4. Pull the keypad panel down.
5. Disconnect the keypad and display har-
ness connectors (A).
6. Remove the four screws that attach the
keypad to the keypad support bracket (B).
7. Remove the bracket mounting screw that
attaches the ground strap from the keypad
to the chassis (C).
8. Remove the partially disassembled key-
pad from the instrument.
9. Remove the four screws (D) that attach
the display to the keypad, remove the dis-
play, then mount the display onto the
replacement keypad.
10. Disconnect the keypad flex cable (E)
from the keypad interface board (F).
Remove the keypad interface board, then
install onto the replacement keypad.
Connect the keypad flex cable from the
replacement keypad to the keypad inter-
face board.
11. Remove the spring, standoff, and washer
(G) from three corners of the keypad as
For additional information or technical assistance,
please contact Advanced Instruments Hot-Line
®
Service Center (U.S. 1-800-225-4034, outside
North America +US 1-781-320-9000).
325P511 Rev1
(3255 Service Manual)
Page 1 of 2
D
B
A
B
E
C
F
To Next Page
Loading...
Need help?
General
