Panasonic EY7270-X8 User manual

1 SCHEMATIC DIAGRAM 2
2 WIRING CONNECTION DIAGRAM 2
3 DISASSEMBLY/ASSEMBLY INSTRUCTIONS 3
©2006 Matsushita Electric Works Ltd. All rights
reserved. Unauthorized copying and distribution is a
violation of law.
EY7270-X8
EY7271-X8
4 TROUBLESHOOTING GUIDE 7
5 CHECK PARTS IDENTIFY PROCEDURE 9
6 EXPLODED VIEW & REPLACEMENT PARTS LIST 10
Cordless Impact Driver
SPECIFICATIONS
CONTENTS
Page Page
ORDER NO. PTD0606X34CE

1 SCHEMATIC DIAGRAM
2 WIRING CONNECTION DIAGRAM
2
EY7270-X8 / EY7271-X8

3 DISASSEMBLY/ASSEMBLY INSTRUCTIONS
Ref. No. 1A Procedure 1A Removal and attachment of the Housings.
1. Loosen the belt hook bolt turning it counterclockwise, using a
coin or a flat blade screwdriver.
2. Take out the belt hook.
3. Remove nine housing screws.
4. Open the housing B.
NOTE :
The housing A and B is tightened as the motor mounting base
is joint fitting.
Hold the housing B and take it out vertically.
5. Take out the fixation cover, protectors and anvil block.
(Removal)
NOTE :
When opening the housings, make sure that the main PCB is
on the housing A.
If the main PCB sticks in the housing B and pull it out from the
housing A, the ribbon cable may be defected.
(Attachment)
1. Insert the click spring into the housing A.
NOTE :
Be sure to use the tweezers or the small flat-head screwdriver
when inserting the click spring.
3
EY7270-X8 / EY7271-X8

Ref. No. 1B Procedure 1A →
→→
→1B Removal and attachment of the Motor.
(Removal)
1. Take out the motor with the driving block from housing.
2. Separate the motor assembly from the driving block.
3. Take out the motor rotor assembly from the motor stator.
NOTE :
Make sure not to damage the magnet by motor rotor.
(Attachment)
1. Insert the motor rotor assembly into the stator with care of hitching
FET.
NOTE :
Make sure that there is no metal powder around the motor rotor.
Ref. No. 1C Procedure 1A →
→→
→1B →
→→
→1C Removal of the Driving Block.
1. Remove the thrust plate.
2. Take out the planet gears and pins slightly tapping the driving block
on the table.
4
EY7270-X8 / EY7271-X8

Ref. No. 1D Procedure 1A →
→→
→1B →
→→
→1C→
→→
→1D Removal and attachment of the Switch.
1. Take out the switch assembly from the housing.
(Attachment)
1. Connect the motor lead wires.
NOTE :
Do not push the area where marked the arrow in order to
prevent the breakage.
2. Insert the connectors into the FET, the main PCB and the motor
stator.
NOTE :
Make sure to handle the ribbon cable gently in order to avoid the
breakage.
Apply the grease (FLOIL) on the places where insert into the
connectors.
5
EY7270-X8 / EY7271-X8

Ref. No. 1E Procedure 1A →
→→
→1B →
→→
→1C→
→→
→1D→
→→
→1E Assembly of the Driving Block.
1. Press fit the lead wires firmly.
2. Place the ribbon cable properly without getting caught in the lead
wires.
6
EY7270-X8 / EY7271-X8

(Refer to WIRING CONNECTION DIAGRAM)
4 TROUBLESHOOTING GUIDE
< TROUBLE > < CHECK > < REMEDY >
Does not operate. <CHECK BATTERY PACK.> NO Replace battery pack.
→If no less than 12V DC is available across the (+) and (-) terminals, →
the battery pack is OK.
NOTE: The battery pack is sold separately as an optional accessory.
See the nearest sales dealer for details. The battery pack has a
limited life.
The pack should be replaced if
-after being charged for the rated charging time the battery voltage
is less than 12V DC or the usable time is extremely short.
-the battery leaks. Check battery for leaks and terminals for
corrosion.
↓OK
<CHECK TERMINAL CONNECTIONS BETWEEN MAIN UNIT NO Repair contacts.
AND BATTERY PACK.> →
Check for proper terminal contacts.
↓OK
<CHECK MOTOR ROTOR.> NO Replace motor
Check the condition of rotor if there is any wear, crack and deformation. →rotor assembly.
↓OK
<CHECK MOTOR STATOR.> NO Replace motor
Check the condition of motor case if there is any crack and deformation. →stator.
Does not speed- <CHECK SWITCH.> NO Replace switch
control. →See in detail at CHECK PARTS IDENTIFY PROCEDURE. →assembly.
Does not light LED.
Does not change
impact mode.
7
EY7270-X8 / EY7271-X8

< TROUBLE > < CHECK > < REMEDY >
Does not vibrate <CHECK ANVIL.> NO Replace anvil.
or weakness of →Check wear condition of anvil. If no less than 1mm from →
vibration. the corner at (A) side or 0.5mm from the corner at (B) side,
anvil is OK.
↓OK
<CHECK HAMMER.> NO Replace hammer.
Check wear condition of hammer. If no less than 2mm from the corner →
at (C) side or 1mm from the corner at (D) side, hammer is OK.
8
EY7270-X8 / EY7271-X8

5 CHECK PARTS IDENTIFY PROCEDURE
9
EY7270-X8 / EY7271-X8

6 EXPLODED VIEW & REPLACEMENT PARTS LIST
6.1. EY7270 EXPLODED VIEW
10
EY7270-X8 / EY7271-X8