Rane KDC 6 Service manual

OPERATING / SERVICE MANUAL KDC 6
MA 6S DC POWER SUPPLY KIT
INSTALLATIONINSTRUCTIONSFORTHEKDC6
Safety First
CAUTION: THESE INSTALLATION INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO
AVOID ELECTRIC SHOCK DO NOT PERFORM INSTALLATION UNLESS QUALIFIED TO DO SO. REFER ALL
SERVICING TO QUALIFIED SERVICE PERSONNEL.
Items included in your KDC 6 kit:
(1) KDC 6 Printed circuit board (PCB) with wires installed
(1) Input/Output (I/O) panel
(2) #4-40 x ¼" screws
(3) tie-wraps
Note: Contact your Rane dealer for missing items.
Tools needed:
#2 phillips screwdriver
#1 phillips screwdriver
small blade screwdriver
needle nose pliers
diagonal wire cutters
I/OPanel Exchange Procedure:
1. Unplug the MA 6S from the AC power source. IMPOR-
TANT: Wait ten (10) minutes before starting the installa-
tion of the KDC 6 for the power supply caps to safely
discharge.
2. Disconnect the inputs and speakers from the MA 6S by
unplugging the Euroblock connectors.
3. On a sturdy flat surface, place the MA 6S upside down
with the bottom facing up.
4. Remove the bottom cover. This is held in place by (16) #6
thread-forming screws. (12) of these screws are located on
the bottom surface which is now facing up. (2) more
screws are located on each side of the unit. See drawing
522-221 for more details.
5. Remove the I/O panel. This is held in place by (8) #6
thread forming screws and (12) #4-40 x ¼" screws.
Remove all (20) screws. Put them in a safe place, you will
need all the #4 screws and (7) of the #6 screws for re-
assembly. Remove the I/O plate. Keep this panel if you
might convert the MA 6S back in the future. See drawing
522-221 for more details.
6. Install the new I/O panel on the MA 6S unit in the same
orientation the original I/O panel was. You will note that
the new I/O panel does not cover up the silkscreened
information and mounting hole for the KDC 6. Replace (7)
#6 thread forming screws and (12) #4-40 x ¼" screws that
you removed in step 5 above. See drawing 522-222 for
more details.
7. The I/O panel exchange is complete. Proceed to the next
section to install the KDC 6 PCB.
Installing the KDC 6 PCB:
1. Confirm that the MA 6S is off and unplugged, and the I/O
panel exchange is completed.
2. Referring to the included diagram (see drawing number
522-223), connect the wires from the KDC 6 to the correct
locations on the MA 6S. Orient the KDC 6 with the
component side of the PCB facing up (towards the bottom
cover) while doing this.
3. After all wires are connected correctly to the power supply
PCB of the MA 6S, install the KDC 6 into the MA 6S
chassis with the 3-station Euroblock connector protruding
out the rear of the chassis. The components of the KDC 6
circuit PCB should be facing up (towards the bottom
cover). Make sure the holes in the chassis of the MA 6S
align with the threaded holes on the L-brackets of the KDC
6 and install (2) 4-40 x ¼" screws through the chassis into
the L-brackets. See drawing 522-222 for more details.
4. Using the included plastic tie-wraps, bundle the wires of
the KDC 6 neatly and route them away from any sharp
objects.
5. Reinstall the bottom cover using the (16) screws removed
in step 4 of the I/O panel exchange procedure. See drawing
522-221 for more details.
6. You are now done with installing the KDC 6. See the next
section on power supply connection.
continued on back page

All features & specifications subject to change without notice. 520-368 APR95Printed in the U.S.A. on Recycled Paper
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Connecting the KDC 6 to Your 48VDC
(+24VDC)PowerSupply:
1. Confirm that the MA 6S unit is off and unplugged.
2. The KDC 6 must be powered from a 48VDC power supply
with a center tap to allow +24VDC operation. Refer to the
following diagram using four automobile batteries. Two
12V batteries connected in series equal 24 volts. Note that
all wires used must be 10-12AWG. You should always use
fuses when utilizing automobile batteries. These batteries
are capable of supplying large amounts of current and can
explode if shorted.
3. The Euroblock connector that comes with the KDC 6 has
three setscrews used to lock the three DC input wires into
the correct location. To insert the wire into the correct hole,
you will need to turn each setscrew counterclockwise all
the way out. The screw does not have a stop; eventually
you will notice that more counterclockwise screw turning
does not continue to come out. Stop at that point, and insert
the correct wire from your power supply into the correct
hole on the KDC 6. The wire end should have the insula-
tion stripped back about ½". When using stranded wire, it
is recommended that you tin the stripped end with solder.
Now turning clockwise, snug the locking mechanism down
on the wire. Once snug, tug on the cable to insure proper
locking and move to the next wire.
a. Connect the wire from the +24VDC supply to the
+24VDC Input of the KDC 6.
b. Connect the wire from the -24VDC supply to the
24VDC Input of the KDC 6.
c. Connect the wire from the common of your supply to the
COM Input of the KDC 6.
4. Once all wires are connected to the KDC 6 and the unit is
connected to the 48VDC ( +24VDC) power supply, the fan
in the MA 6S will begin to turn and the POWER LED
lights. After a short period of time the output relays of the
MA 6S pick up. When a signal is applied with speakers
connected correctly, your signal appears over the loud-
speaker system, proving all is well.