Dewalt DHS790AB TYPE 20 miter saw

INSTRUCTION MANUAL - Page 23

For DHS790AB. Also, The document are for others Dewalt models: DHS790

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English
21
Troubleshooting Guide
BE SURE TO FOLLOW SAFETY RULES AND INSTRUCTIONS
TROUBLE! WHAT’S WRONG? WHAT TO DO
Saw will not start 1. Battery or power supply not installed 1. Install battery or power supply. Refer to Installing and Removing the Battery Packs or
Installing and Removing D
E
WALT Corded Power Supply.
2. Battery or power supply not fully inserted 2. Check that battery or power supply are fully latched. Check AC adapter plug in the motor housing
for debris. Refer to D
E
WALT Corded Power Supply Cleaning Instructions.
3. Batteries not charged 3. Charge batteries. Refer to Charging Procedure.
4. Power supply not plugged in 4. Plug in saw.
5. Cord damaged 5. Have cord replaced by authorized service center.
6. Fuse blown or breaker tripped 6. Replace fuse or reset circuit breaker.
7. Saw overheated 7. Wait several minutes for saw to cool.
8. Batteries overheated 8. Wait several minutes for batteries to cool.
Saw makes
unsatisfactory cuts
1. Dull blade 1. Replace blade. Refer to Changing or Installing a New Saw Blade.
2. Blade mounted backwards 2. Turn blade around. Refer to Changing or Installing a New Saw Blade.
3. Gum or pitch on blade 3. Remove blade and clean with turpentine and coarse steel wool or household oven cleaner.
4. Incorrect blade for work being done 4. Change the blade type. Refer to Saw Blades under Accessories.
Blade does not come up
to speed
1. Extension cord too light or too long 1. Replace with adequate size cord. Refer to Use Proper Extension Cord under Important Safety
Instructions.
2. Low house current 2. Contact your electric company.
Machine vibrates excessively 1. Saw not mounted securely to stand or
work bench
1. Tighten all mounting hardware. Refer to Bench Mounting.
2. Stand or bench on uneven floor 2. Reposition on flat level surface. Refer to Familiarization.
3. Damaged saw blade 3. Replace blade. Refer to Changing or Installing a New Saw Blade.
Does not make accurate
miter cuts
1. Miter scale not adjusted correctly 1. Check and adjust. Refer to Miter Scale Adjustment under Adjustments.
2. Miter pointer not adjusted correctly 2. Check and adjust. Refer to Miter Pointer Adjustment under Adjustments.
3. Workpiece is not perpendicular to table 3. Check and adjust fence. Refer to Fence Adjustment under Adjustments.
4. Workpiece moving 4. Clamp workpiece securely to fence or glue 120 grit sandpaper to fence with rubber cement.
Material pinches blade 1. Cutting bowed material 1. Refer to Bowed Material under Special Cuts.
CUTLINE worklight flashing 1. Battery low on charge 1. Charge batteries. Refer to Charging the Battery.
2. Battery hot 2. Wait several minutes for batteries to cool.
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