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100mm GRAPHICS RECORDER TECHNICAL MANUAL
HA249875
Issue 1 Jan 99
Section 3
Page 3 - 15
3.4.1 CIRCUIT BOARDS (Cont.)
FITTING A SECOND INPUT BOARD
13.
If there are option boards fitted in slots three and/or four, continue at step 14. If slots 3 and 4 are empty continue at
step 16.
The new input board occupies option slots three and four, so any option boards located in these slots must be removed
as must the circuit board guide extension:
14.
Remove all the flexi cables associated with all the option boards and store them in a safe place for use in later re-as-
sembly. Pull any option boards in slots 3 and 4 forwards out of their connector and card guides. Store the cards in a
static safe environment until such time as they are needed.
15.
Undo the securing screw at the rear of the recorder and remove the circuit board guide extension (1/2 board support -
BD249646) as shown in figure 9. Continue at step 18.
16.
If slots 3 and 4 are empty, and the circuit board guide extension (BD249646) is
n o t
n o t fitted, continue at step 18. If the
guide extension
i s
i s fitted, remove it as described in step 15, then continue at step 17.
17. If not already fitted, fit the connector (CI249643) by removing the relevant blanking plate (BA249715) and push-
fitting the connector until it clicks into place as shown. The connector has orientation lugs to prevent insertion
the wrong way up. Clip the screwdriver guide (BD249872) into place, and fit the label (LA247993) to the con-
nector (23 to 44).
18 Set the address link for board 2, as shown, and slide the circuit board into place. Connect the necessary flexi
cables (conductive surface (bright-ends) uppermost) as follows.
19.
If option board 1 IS fitted:
19a PSU to option board 1 and Option board 1 to Input board 2
If option board 1 is NOT fitted:
19b PSU to input board 2
In either case
19c PSU to option board 2 (if fitted)
19d Input board 1 to input board 2.
19e Input board 1 to writing system
The figure below shows two possible flexible cable layouts.
20. If previously removed re-fit plastic covers over the PSU connector slots securing them with plastic rivets.
21. Re-fit the board retainer, and the insulating sheet.
22. Re-fit the recorder chassis to the case, ensuring that the flexi cable is properly fitted.
1. Remove cover plate
2. Press-fit connector
BD249646
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