Linn Komri User manual

Replacement of Komri Fuses

Information and procedure

FOR USE BY AUTHORISED LINN RETAILERS ONLY

Important Information about this procedure

• This procedure should only be carried out by an Authorised Linn retailer, and only on advice from

Linn Service.

• If you have any doubts, concerns, questions etc regarding this procedure, do NOT proceed – contact

Linn Service.

• Please read through this procedure in its entirety before starting work.

• It is important to follow ALL instructions carefully and exactly.

Estimated time for completion of this task:

45 mins for fuse replacement on both Komri’s.

1 hour for Aktiv AV5140

Equipment Required

• Free standing workbench, 53cm high, with a flat surface, clear of debris and clutter.

• No.25 Torx security driver.

• Flat blade screwdriver to remove fuses with.

Parts Required

Value/Rating: Type: Qty req: Linn part no:

10amp; 250volt Slow-blow 4 per Komri MISS 397

Procedure

Step 1: Disconnect the Komri from everything and especially the mains. Pull out

the main fuse compartment to access fuses (located directly under the

mains inlet as shown)

Main fuse

If the Komri has 6.3amp fuses fitted, then remove these and replace with

two10amp MISS 397’s.

There are two other fuses to change, however this requires some

dismantling of the Komri to gain access to them.

Step 2: Position a flat surface at the rear of the speaker

onto which the amplifier module can be laid once it

has been removed. Note the height shown in the

photo. Cover the surface of the bench with

protective foam, a towel/blanket or similar soft

material to protect the heatsink.

53cm including

foam pad

Step 3: Remove the 10 screws securing the amplifier

module to the cabinet. Leave one of the top

screws until last. Note: although the module is a

precise fit in the cabinet, it’s advisable to hold the

module in place once the last screw has been

removed to ensure that it doesn’t fall out.

Step 4: The module will probably require to be pulled

outwards to release it from the recess in the

cabinet. Grasp the heatsink as shown on the

photo and pull the module away from the cabinet.

Do not allow it to move more than 20mm from the

cabinet. Use the hand resting on the top of the

cabinet to control the movement. (Note: if the

module is hot it will be more difficult to release it

from the cabinet.)

Step 5: Whilst supporting the top of the heatsink place a

hand at the bottom and pull the whole module

outwards, maintaining the angle shown in the

photo. Note: the weight of the module is taken by

resting the two pins on the cabinet (see below).

Step 6: Lay the module flat on a soft surface, taking great

care not to damage the veneer on the rear of the

cabinet. Note how it has been laid on a piece of

foam to protect the paint on the heatsink.

Step 7: To change the remaining two fuses, it is necessary

to partially remove the top screening can. Remove

all 4 screws (1 at each corner) and the lift the end

of the screening can upwards in the direction

shown. Note: the cables at the end that are cable-

tied may restrict the movement of the screening-

can.

Step 8: There are two power-supply boards, each with a

fuse behind the inlet socket (see picture), change

both fuses, as earlier, if there are 6.3amp fuses

fitted these should be changed for 10amp MISS

397’s.

Step 9: Replace the screening-can and re-fit the four

screws

Step 10: The amplifier module is now ready to be

assembled back into the cabinet. Before picking up

the module, note how the cables should lie relative

to the support pin.

Fuse

locations

Lift this screening

can Lift screening

can at this

end as

indicated

Step 11: Pick up the amplifier and rest it on the support

pins as shown in the photo.

Step 12: Bring the module to a position where it is vertical

and then push it into the cabinet keeping it vertical

as you do so.

Step 13: Re-fit the 10 screws

Step 14: Repeat this procedure with the other Komri.

Step 15: Fully test both Komri’s.

End of procedure

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