Honeywell Excel 15 W7760A User manual

Excel 15 W7760A

EPROM REPLACEMENT

DESCRIPTION 5. Remove galvanized plate. Place on adjacent work

This EPROM Replacement procedure outlines the surface in the orientation as it was removed

process to upgrade the Excel 15 W7760A Controller to

the latest firmware release.

Firmware replacement kit: Part # 32004159-002 Plate

Procedure will apply to future firmware as released. Work Surface

Material Needed

1. Replacement EPROM. Programmed with new Firmware Side View

2. #10 Tork Driver (preferred), or 3/16" thin flat-blade

screwdriver 6. Set aside paper protective sheet, then remove 2 screws

that secure board to cover.

3. Extraction Tool: AMP PLCC Extraction Tool 821903-50

00, AMP 822154-1 00, or small diameter probe/object

(i.e. paper clip)

Procedure

1. Discharge static electricity form body by touching known

earth ground. 7. Making certain you are grounded. Remove the circuit

2. Remove W7760A from wiring subbase. Place controller board and place it component side up, pin side down on

on work surface with pins and label side up. top of the galvanized plate. Extend pins over the edge

on each side of the galvanized plate.

3. Remove plastic, anti-static sheet. (This sheet contains

device information) – Set aside.

Caution: Do not tear plastic protective sheet at

corners.

oard

Plate

4. Using the #10 Tork Driver or flat-bladed screwdriver

remove the four screws around perimeter. Put the

screws aside in a secure place for later re-assembly. Work Surface

Side View

®U.S. Registered Trademark

95- 7631

Excel 15 W7760A EPROM Replacement

REPLACEMENT

PROM

Note: Orient the board with heat sink to

left. The EPROM to be replaced is the

socketed component located closest to

the component labeled Echelon Heat Sink

Home and Building Control Home and Building Control Home and Building Control Products

Honeywell Inc. Honeywell Limited-Honeywell Limitee Honeywell AG

Honeywell Plaza 155 Gordon Baker Road Böblinger Straße 17

P.O. Box 524 North York Ontario D-71101 Schönaich

Minneapolis, MN 55408-0524 M2H 3N7 Phone (49-7031) 637-01

Fax (49-7031) 637-493

Echelon

Jack

8. Insert the tips of the Extraction Tool in the diagonal slots of the micro socket, and slowly remove the EPROM with a

rocking motion.

9. Again, making certain you are grounded, insert the new EPROM into the socket, orienting the notch in the chip with the

notch in the socket in the lower right hand corner. The EPROM may be inserted into the socket by placing it on top of the

socket and pressing it into place with thumb pressure until it is seated. While pressing the EPROM into the socket, keep

another finger on the rear of the circuit board behind the socket so the board is not stressed while pressing with the thumb.

10. Turn the circuit board upside down again and orient it on the cover. Replace the two center screws.

11. Replace the protective paper and the galvanized plate. Replace the 4 screws in each corner.

12. Replace the labeled plastic sheet.

13. Keep EPROM in a safe place until system operation has been confirmed.

14. Make a record of the W7760A as being updated. It is good idea to make a mark on the controller to that effect as well.

15. Reinstall the W7760A.

Printed in U.S.A. on recycled

paper containing at least 10%

95-7631 D.B. 12-99

post-consumer paper fibers.

www.honeywell.com

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