Receiver Rear Panel; Battery Replacement - Lectrosonics CR187 Operating Instructions And Troubleshooting Manual

RECEIVER REAR PANEL

12 VDC INPUT
Connects to the supplied CH-12 AC adapter for powering the receiver from a 110/120V AC source. The receiver may
also be powered from external 12 volt DC sources using the correct plug (Switchcraft S-760 power plug). A diode
bridge is used in the external power input, so that the CR187 will operate properly from either polarity. The CR187 is
a negative ground device. Do not connect this receiver to a positive ground device through the audio cabling. Dam-
age to either device could result.
AUDIO OUTPUT
Supplies a balanced, low impedance output at microphone level. The audio signal is output on pins 2 and 3, while
pin 1 is ground. The output level of this jack is controlled by the OUTPUT control on the front panel of the receiver.
The connector is a standard XLR type.

BATTERY REPLACEMENT

The CR187 is powered by a standard alkaline 9 volt battery. It is important that you use ONLY an ALKALINE battery
for longest life. Standard zinc-carbon batteries marked "heavy duty" or "long-lasting" are not adequate. They will
provide only about one hour of operation. Similarly, nicad rechargeable batteries give less than 2 hours of operation,
and will also run down quite abruptly. Alkaline batteries provide about 5 hours of operation.
To open the battery compartment, press outward on the cover door in the direction of the arrow as shown in the
drawing. Only slight, sliding pressure is needed to open and close the battery door.
TO OPEN
AUDIO OUTPUT 12 VOLT DC INPUT
Swing the door open and take note of the polarity marked inside showing the location of the positive (+) and negative
(-) terminals. Insert the battery and close the cover by pressing in and across, reversing the opening procedure
outlined above. Note that the battery door will NOT close if the battery is inserted incorrectly, since the terminals will
hit a protective polarity barrier. Do not force the battery in.
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