C
MOTOR/PUMP ASSEMBLY
C
1.
REMOVE BATTERY COVER AND BATTERY.
UNSCREW BATTERY COVER SCREW AND REMOVE THE COVER.
REMOVE THE BATTERY FROM THE BATTERY HOLDER.
C
2.
REMOVE FRONT HOUSING ASSEMBLY.
PEEL THE WELCH ALLYN LABEL FROM THE UNIT AND UNSCREW TWO
SCREWS UNDER THE LABEL. REMOVE THE FRONT HOUSING ASSEMBLY
FROM THE HANDLE. DO NOT UNPLUG FLEX CIRCUIT FROM LCD BOARD.
NOTE: If unit is a CE model, take caution in removing the front housing.
There are two pieces of fragile ESD tape at both corners.
C
3.
REMOVE TUBING FROM MOTOR/PUMP ASSEMBLY.
PULL TUBE FROM THE PUMP. PULL TUBE FROM THE BALLAST.
DISCONNECT FLEX CIRCUIT FROM SWITCHES BOARD AND POWER
SUPPLY BOARD. GENTLY LIFT MOTOR/PUMP ASSEMBLY UP.
REPLACE MOTOR PUMP ASSEMBLY
C
4.
REPLACE MOTOR/PUMP ASSEMBLY.
INSTALL REPLACEMENT PRE/ADJUSTED MOTOR/PUMP ASSEMBLY
OVER LCD RETAINER. RE-ATTACH FLEX CIRCUITS TO POWER BOARD
AND SWITCH BOARD. USE PIN STRAIGHTENING PLIERS OR FINGERS
TO RE-ATTACH FLEX CIRCUITS. RE ATTACH FRONT HOUSING ASSEM-
BLY. LAY FLEX CIRCUITS IN ACCORDING TO DRAWING #236300.
C
5.
CALIBRATE HANDLE WITH CALVIN.
REFER TO SECTION 6 FOR CALVIN PROCEDURE. UPON SUCCESSFUL
CALIBRATION AND TEST, PLACE A DROP OF BLACK MAX tm ADHESIVE
M-30341 BETWEEN THE FRONT HOUSING AND THE FIBER STRIPS.
REPLACE BATTERY AND BATTERY COVER. SCREW BATTERY COVER
IN PLACE.
NOTES:________________________________________________________________________
______________________________________________________________________________
D
MCU ( BOTTOM ) BOARD
D
1.
REMOVE POWER SUPPLY BOARD ( TOP BOARD ).
FOLLOW INSTRUCTIONS IN SECTION B FOR REMOVAL OF POWER
SUPPLY BOARD.
D
2.
UNPLUG FLEX CIRCUIT FROM MCU BOARD ( BOTTOM BOARD ).
USE PIN STRAIGHTENING PLIERS OR FINGERS TO GENTLY PULL THE
FLEX CIRCUIT FROM THE MCU BOARD SOCKET.
D
3.
REMOVE MCU BOARD.
UNSCREW FOUR STANDOFFS WITH 1/8" NUT DRIVER. GENTLY PULL
THE BOARD STRAIGHT OUT OF THE HOUSING. FOUR PLASTIC
SPACERS ARE ATTACHED TO THE BOARD AT EACH SCREW HOLE.
TRANSFER THESE TO THE REPLACEMENT MCU BOARD.
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