DeWalt DW074LR T2 Series Manuale utente

-1 -

Series Service Manual

( V1.0/2023)

DW074LR T2 & DCE074R T2

-2 -

Main part diagram

Top Cover

Mid Secon

Base

Baery

Keypanel

Tripod

Aachment

Rotating

components

Rotating

components

Rotating

1. Remove the rotating assembly along the reverse side of the light outlet

Rubber sleeve

2. Remove the rubber sleeve from the bracket

Rubber sleeve

Remove the rotating assembly along the reverse side of the light outlet

Maintenance step

-3 -

-4 -

4. Remove 4 screws and 3 self-tapping screws to take off top cover.

3. Remove 4 screws to take off Connecting Plate

Connecting

Plate

4 x Screws

Top cover

4 x Screws

3 x Self-tapping

Screws

5. Remove 4 screws and 3 self-tapping screws to take off Mid Section..

-5 -

4 x Screws

3 x Self-tapping

Screws

-6 -

6. Below is a list of the main parts. Replace or repair these parts

according to the troubleshooting section.

Counter

Photo-Eye PCBA

Alarm Spring

Stepping motor

A&B

Supporng

Frame

Compensaon

glass

Upper motor

Main PCBA

Four M2.5

screws

907250 NRL-MB-005_A11 Main PCBA DCE074R T

907251 NRL-MB-005_A12 Main PCBA DW074R T2

-7 -

Baery pack

Membrane

Switch

Support body

with Laser

Defect Troubleshooting Main Part

Horizontal application

defective

Check x-axis and y-axis bubble

circuit board connection

cable ,or replace the Membrane

Switch

906139 OPP2-keypad-001

Membrane Switch

Calibration can't saved Replace the storage IC Main PCBA

Calibration limit

beyond precision

scope Adjust the compensation glass /

Weak beam Replace the laser

907257 OPP-01-01_88 Main

Laser Module（DW074LR）

906482 MPP-01-01_88 Main

Laser Module（DCE074LR）

Uneveling Replace stepping motor 904290 NRL800HT-01-02_04

Stepper Motor

Light is out of working Replace the Membrane Switch 906139 OPP2-keypad-001

Membrane Switch

Unit won't receive

remote control signal. Check receiver connection cable /

Vertical application

defective

Check z-axis bubble circuit

board connection cable ,or

replace the Membrane Switch

906139 OPP2-keypad-001

Membrane Switch

Rotation head loose

from frame. Fasten the screw /

Battery indicator lights

flash Battery voltage is low, need to

recharge /

No alarm Replace Main PCBA Main PCBA

Button doesn't work Data cable looses ,reinstall the

data cable /

Scan function

defective Replace Counter Photo-Eye

PCBA 905243 NRL-ECV-001_A20

Counter Photo-Eye PCBA

Slope out of tolerance

Loosen the four M2.5 screws on

the Main PCBA. Move the Main

PCBA left or right to correct the

slope.

Tighten the screws.

Unable to enter the

calibration mode Replace main PCBA Main PCBA

-8 -

Calibration Instruction

1. Install the battery, long press the SLOPE BUTTON , meanwhile short press the

POWER BUTTON . Hold the SLOPE BUTTON until POWER BUTTON released. All

the indicators will light up , indicating instrument is in calibration mode;

2. When enter calibration mode, theunit will auto select X direction. Calibrate the

laser through UP/DWON BUTTON . Press and hold Slope button to save the

calibration value. The rotating laser will flash 3 times.

Press and hold RPM BUTTON (Press time≥3s) to switch to Y axis. Repeat

STEP2 to calibrate Y axis. The two values in X and Y need to be saved

separately.

4. Short press to exit the calibration mode or power off the rotary directly.

-9 -

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