
S E C T I O N F I V E
5-4
REPLACING THE READ LAMP
(PART NUMBER 880-07)
NOTICE:
New lamp may appear bent,
DO NOT
attempt to straighten.
1. Remove four screws (2) securing the bottom cover (3) with a phillips-
head screwdriver. Leave bottom cover (3) on unit.
2. Holding top (1) and bottom (3) covers in place, turn unit over so it rests
on the bottom cover (3). Remove top cover (1).
3. Locate optics assembly (4) and remove screw and washer (5) in the
middle of lamp assembly P.C.B. (6).
4. Lift out old lamp assembly (6) and discard.
5. Install new lamp assembly (6) by carefully inserting lamp (6) into
housing (7) and lamp pins (8) into lamp connector. Press down gently to
make sure connector pins (8) are properly seated.
6. Secure lamp screw and washer (5) in place.
7. Carefully clean any dust or plastic chips off circuit board and top cover (1)
using moisture free compressed air. Place top cover back on instrument.
8. Holding top and bottom covers in place, turn unit over so that it rests on
top cover (1).
9. Remove bottom cover (3). Clean circuit board and bottom cover (3) with
compressed air, then place bottom cover (3) back on instrument.
10. Secure bottom cover (3) to instrument with four screws (2) using a
phillips-head screwdriver.
1
5
6
8
7
3
2
4
Summary of Contents for 890
Page 1: ...890 A U T O M A T I C S T R I P R E A D I N G D E N S I T O M E T E R Operation Manual ...
Page 2: ......
Page 38: ...S E C T I O N F I V E 5 6 ...
Page 40: ...A P P E N D I X A A 2 ...
Page 45: ...D 1 A P P E N D I X D Parts List and Packaging Drawings Parts List ...
Page 46: ...A P P E N D I X D D 2 Packaging Drawing ...
Page 49: ......
Page 50: ......
Page 51: ......