Xantech ML85K Cause, Solution, Component to Test, Instructions, current load of the system

Models: ML85K

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Component to Test

Symptom 6: Emitters function but some (or all) components do not respond.

Cause:

Solution

Reposition the Emitter so that it is directly

1.Emitter placement is incorrect. over the components sensor window. Consult the components owners’ manual of the unit for the exact location of the IR Sensor Window.

 

 

Reposition the Emitter to a position that is

 

 

suitable for the unit. Use a 283 or 286D Blink

 

 

style emitter (they have a lower output than

 

 

non-blink emitters 282 and 284M). If the

 

 

components do not need to be controlled

 

Emitter placement is correct

directly without an IR Repeater system

 

(components are located in an equipment

 

but the signal is overpowering

2.

the unit or there is bleed-

closet), place a Mouse Emitter Shield cover

over the Emitter (PN#MS1). The rounded

 

through from other emitters

 

(non-stick) side of the emitter is a hi-output

 

close by.

 

side and can reflect off other devices and

 

 

 

 

overpower some components IR Sensors. If

 

 

using a CB12 connecting block, try a 789-44

 

 

connecting block. This has a series resistor

 

 

at the output, which will limit current to the

 

 

Emitter.

12

Symptom #7: Absolutely No Functionality (How to determine which component is at fault)

 

 

Component to Test

Instructions

 

 

 

 

With a Multimeter, measure the DC Voltage of the

 

 

 

 

supply while it is connected to the Connecting Block.

 

 

 

 

Put the Negative lead of the meter on the terminal

 

 

 

 

marked GND and the Positive Lead on the terminal

 

 

 

 

marked 12VDC (or V). You should get a reading

 

 

 

 

between 11.5VDC and 13.0VDC. If not, remove the

 

 

 

 

supply from the Connecting block and measure again

 

 

1.

Verify Power Supply

this time directly on the 2.5mm Coaxial plug. If it

 

 

 

 

reads between 11.5VDC and 13VDC, power supply is

 

 

 

 

most likely good. Reconnect to the Connecting Block

 

 

 

 

and proceed to step 2. NOTE: In most cases this

 

 

 

 

will indicate the supply is good but in some cases

 

 

 

 

the supply can still be bad (i.e. reads good when

 

 

 

 

not plugged in but may not be able to handle the

 

 

 

 

current load of the system.)

 

 

 

 

 

 

 

 

 

Remove the power supply from the connecting block

 

 

 

Verify Emitter. (283D

and all Emitters from the output. Place a jumper wire

 

 

2.

or 286D Blink Style

on the connecting block between IR and +12v.

 

 

Reconnect the Power Supply and one emitter. The

 

 

 

ONLY)

 

 

 

Emitter should Light bright and solid. Repeat for all

 

 

 

 

 

 

 

 

emitters.

 

 

 

 

 

 

 

 

 

Use a diode tester to verify proper Emitter operation.

 

 

 

 

Remove Emitter from Connecting Block. Place the

 

 

 

Verify Emitter. (282M

Positive Lead of the tester on the TIP of the Mono

 

 

3.

or 284M NON Blink

Mini Plug and the Negative Lead on the Shield of the

 

 

Mono Mini Plug. Meter should read a voltage. When

 

 

 

Style)

 

 

 

the leads are reversed (Positive lead on Shield and

 

 

 

 

 

 

 

 

Negative lead on TIP) you should not get any voltage

 

 

 

 

reading at all.

 

 

 

 

 

 

 

 

 

Remove the power supply from the connecting block

 

 

 

 

and all Emitters from the output. Place a jumper wire

 

 

 

 

on the connecting block between IR Signal and GND.

 

 

4.

Verify IR Receiver.

Reconnect the Power Supply. With a known good

 

 

 

 

hand-held remote, shoot a constant IR Command at

 

 

 

 

the receiver and verify the TB LED on the Receiver

 

 

 

 

lights.

 

 

 

 

 

 

 

 

 

 

 

 

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Xantech ML85K Cause, Solution, Component to Test, Instructions, and proceed to . NOTE In most cases this