Crown OC-150A - 220 Volt Conversion Procedure

CROSSTALK AND SEPARATION
Since the QC-150A is a high signal level swikching
device, crosstalk is limited ta lead dress, anid
VIB
AC LIHUlepldDl%)
mechanical construction of the switches. The OC-
$WITIEPT
150A has been carefully engineered with high quality
switches. For any practical purposes, the crosstalk is
w far belaw average listening po%ea tevelo, that it
may be cansidered nan -existent.
tr@nr- BUYEL
fmw BUREB
CAfaE OF THE QC-15OA
If the leathereBe case of the OC- 1 SOA is scratched,
the swatches can be removed wifh PBW~E?~, ft;liowed
by washing with a dishw~shing deterg~nt and water.
$0
Furniture palish can be used ta polish the cover.
L~R~WAUDD~~~
SWITCH
220 VOLT CONIlERSlON
Conversisn for operation with 220 VAC is ac- trans* BUYER
compfished simply with a soldering iron. Figure 2-7 kmt BVRED
shows the two hook-ups, Conversion shoufd be dot-te
in the foflowing steps:
FIG* 2-7
(1) Remove the top cover of the OC-l50A. Lmate the
four wires Tram the transformer going to a ter-
minal strip. (Left hand rear Gamer, terminal strip
is mounted an rear panel.)
(2) Unsalder and remove the wire going from ter-
WARRANTY SERVICE
miflail tothe main ACbus(barewireconnecting
lf a
is encountered, and after a careful
one side 01 alf the A@ receptacles),
check of system hook-~ps the problem persists, the
(3) Unsolder the black wire- from terminal 1, and
unit should be taken to a dealer.
solder it up on the main AC bus,
HE will be able to arrange for authorized service by
(4) Unsalder the black/yel wire from terminal 2 and
CROWN personnel. In the event this proves impossi-
move it to 1, solder it with the btar=k/green and
ble, call or write CROWN International, 1718 West
blue wires. Mishawaka Rd., Elkhart, IN 46514. Your corn-
municatlon will be handled by our s~rwice depad-
(5) the MDL fuse with a '"' A fuse' merit, and information on repair work be
(6) Change the line cord tag to read 224% VAC.
available.