5.26
TABLE 5.4 KEYBOARD TEST
IC5 Pin No.
KEY 2 4 6 10
0
1
2
3
4
5
6
7
8
9
SET
DISPLAY
CLEAR
!
ENTER
!
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
If this test is unsatisfactory it indicates the front panel assembly should be replaced.
5.3 REPAIR
5.3.1 Repair Equipment and Tools
The following equipment and tools should be available to personnel responsible for maintenance
and repair of the analyser.
1. - A volt/ohm/milliamp meter of high input impedance.
2. - Supadriv screwdriver, point size 2. (Cross headed)
3. - Flat bladed screwdriver, 6mm width.
4. - Allen key, 5mm across flats.
5. - Allen key, 3mm across flats.
6. - Nut spinner, M6, 10mm across flats.
7. - Open ended spanner, M4, 7mm across flats.
8. - Open ended spanner, 3/8", 9.5mm across flats.