150X Series
Calibration Manual
6
Keypad Test
The keypad consists of six keys located above the rotary switch. To test the keypad:
1. Turn the rotary switch to
V and momentarily press each of the six keys. Each press of an
operational key causes the Tester to beep. No beep in response to a key press indicates a
defective keypad.
2. Reset the Tester. Turn the Tester rotary switch to
OFF and then to any other position.
Disassemble and Reassemble the Tester
This section provides instructions to disassemble and reassemble the Tester. The instructions
are limited to major replaceable assemblies and do not include component-level detail. See
Figure 3 for an exploded view of the major assemblies. Also, the emphasis is placed on
disassembly. However, when appropriate, an italicized entry at the end of each disassembly
procedure provides critical hints for reassembly.
Figure 3. Disassemble the Tester
Holster
Battery Door
Light-dispersing
Back Panel
Elastomeric
Strip
Keypad
Plastic Shields
Red
PCA Screws
Black
Fuse
Case Top
Gray Plastic
Bezel
Case
Screws
Case
Bottom
Glass LCD
Display
PCA
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