27
A. Removal
1. Remove harnesses and diode wires CAUTION!! STATIC WILL
RUIN THE LASER DIODE - REMOVE THE DIODE LEADS ONLY AT A
GROUNDED STATION USING A GROUNDED SOLDERING IRON AND
WEARING A STATIC LEASH.
2. Remove the three circuit board holding screws.
3. Remove the L.C.D. harness from it's connector. Remove the housing
harness from it's connector (housing connector may be secured with
R.T.V. glue).
4. Remove the sensor leads. Note the colors and locations of the three
laser diode wires and remove them. Note: When removing laser diode
wires, a grounded soldering iron must be used.
B. Replacement
1. Replace all wiring (refer to drawing).
2. Position circuit board against holding brackets and tighten three
holding screws (ensure spacers are between circuit board and holding
brackets).
3. Re-connect the diode wires according to your notes made during
removal.
4. Re-connect the cross and slope sensor leads (see procedures #105 and
#106)
Caution! Before applying power to the P.C.B., the beam
power potentiometer must be set to a safe level (turn 5 to 6
turns counter clock wise to be safe). The laser diode will be
ruined if it is powered-up at too high a setting. Set the beam
power (refer to procedure #112).
5. Set the grade alarm deadbands (refer to procedure # 108).
#108 Setting Grade Alarm Dead Bands
Tools required: Tilt table Time:
Small flat blade driver .25
Note: Refer to fig. 9 for location and pot. adjustment direction.
1. Turn dead band pots to approx. 1/2 of their range. (pots are on the main
P.C.B.)
2. Place the laser on the tilt table,
3. Level the laser in "standard" mode.
To Next Page
Loading...