Crown Com-Tech CT-1610 Service Manual page 55

Rev. 0
SCHEMATIC INFORMATION:
The schematics provided are representative only. There
may be slight variations from amplifier to amplifier. These
schematics are intended to be used for troubleshooting
purposes only.
Module
Com-Tech 10 Main
Com-Tech 810 Main
Com-Tech 810A Main
Com-Tech 810A Main
Com-Tech 810A Main (Dual Pot)
Com-Tech 1610 Main
Com-Tech 1610A Main
Com-Tech 1610A Main
Com-Tech 1610A Main (Dual Pot)
Com-Tech 10 Display
Com-Tech 10A Display
Com-Tech 10A Display
Com-Tech 10 Control 120
Com-Tech 10 Control 220/240
Com-Tech 10A Control 220/240
Com-Tech 10A Control 220/240 CE
Com-Tech 1610 Control 120V
Com-Tech 1610A Control 120V
Com-Tech 1610A Control 120V
Com-Tech 1610 Control 100V
Com-Tech 1610A Control 100V
Com-Tech 1610A Control 100V
Com-Tech 810/1610 Output
Com-Tech 810A/1610A Output
Com-Tech 810 and 1610 Amplifier Service Manual
Schematic
100294
100297
125408
102768
102768
100299
125409
102769
102769
100281
125402
102682
100284
101057
125419
125235
101529
125423
102830
101528
125422
102828
100290
102773
CONTROL MODULE REPLACEMENT MODIFICATION
INFORMATION:
The newer replacement control modules must have a
connection directly to chassis ground. If the old ampli-
fier control module was attached with five plastic stand-
offs and one metal pem, then no modification is re-
quired. If the old amplifier control module was attached
with six plastic stand-offs, then a ground wire must be
added to the new control module.
The grounding wire should be at least 14 AWG wire
and approximately 14 inches (35 cm) in length. One
end of the wire should have a #8 ring terminal, which
can be attached to the chassis ground lug used by the
AC power cord. The other end of the grounding wire
can be soldered to the control board at the ground
pad. The grounding pad is located at the corner of the
board around the mounting hole (it is also labeled
"chassis ground"). The Crown part number for this wire
is A11544-4140G.
All other wires and cables connecting to the control
module should use the same location on the new con-
trol module as was used on the old module.
The older CT10 series amplifiers use a 2 position on/
off switch with no remote position. This switch has only
one wire that should be connected to tab W1 on the
new control board.
]
8-3