Bell Control Technical Data 3700: Difference between revisions

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=== Module Address Switch ===

~~Typical chime and carillon Striker Modules~~ are numbered left to right ~~as 1 through 5~~. Set module 4 as 3+1, module 5 as 3+2~~. Only large carillons will have a module 0 (all off) to the left of 1~~.

Module addresses are human readable (not binary). The switches are numbered 1 to 3 left to right at the top of each module. Set module 4 as 3+1, module 5 as 3+2.

For ~~non-musical controls there will typically be up~~ to ~~two DC Striker modules~~ and ~~up to two Relay modules. The Striker modules are numbered 0~~ (all ~~off~~) ~~and 1~~, ~~and the relay~~ modules ~~are numbered 2 and 3~~.

For single panels needing 25 to 32 note outputs, module number 7 (switches 1+2 ON) and 8 (all switches ON) will be specified, but these addresses are generally reserved for Combo modules.

~~Combination~~ Modules do not have address switches.

==== Non-musical controls ====

Combo Modules do not have address switches. If two are used, the second one will have its address jumper soldered.

Quad output modules are set as follows:

* First striker module 0 - All switches OFF

* Second striker module 1 - Switch 1 ON

* First motor relay module 2 - Switch 2 ON

* Second motor relay module 3 - Switch 3 ON

==== Chimes ====

Single panel of up to four modules numbered left to right.

* Interface configuration Map switch 5 is ON.

Modules addressed from 0 up to 3

* Up to 13 diatonic notes plus the leading tone, sharp 4th and flat 7th semitones

Modules addressed from 1 up to 4

* Up to 15 diatonic notes plus the flat 7th semitone

If other semitones are needed, use a carillon configuration skipping outputs as not needed.

==== Carillon panels ====

Carillon panels come in three sizes. Notes given are for a non-transposed instrument. Transposition is set up in the controller if needed.

* Interface configuration Map switch 6 is ON.

===== Five output modules =====

Up to three 20 output panels support five octaves minus one semitone. Address the modules from 1 to 5:

* Panel 1 skips first semitone for notes C to G#

* Panel 2 outputs notes A to E

* Panel 3 outputs notes F to C

===== Six output modules =====

Three 24 output panels support six octaves fully chromatic. Address the modules from 0 to 5:

* Panel 1 outputs notes C to B (first two octaves)

* Panel 2 outputs notes C to B (third and fourth octaves)

* Panel 3 outputs notes C to B (fifth and sixth octaves)

Custom mapping available for sub-bourdons and missing semitones.

===== Seven or eight output modules =====

From 25 to 32 fully chromatic outputs on a single panel. Address the modules from 0 to 7:

* Module 6: 1 and 2 ON

* Module 7: 1, 2 and 3 ON

== Installation ==

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Strip input and output wires to 3/8 inch (10mm) for lever action terminals. Take care to insert all strands of wire into the terminal and that they do not contact each other outside the terminal.

=== Interface to controller ===

=== AX Systems ===

==== AX Systems with data cable ====

[[File:3700 AX Connection.jpg.jpg|thumb|200px]]

[[File:3700 AX Connection.jpg.jpg|AX output|thumb|200px]]

[[File:AX 3700Panel.jpg.jpg|~~thumb~~|thumb|200px]]

[[File:AX 3700Panel.jpg.jpg|3700 input|thumb|200px]]

The 485 input connector is pinned out one to one the same as the AX tower connector. When multiple panels are used, parallel the data cable to all panels.

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Four wires (two twisted pairs) are enough unless AX STATUS mode is used (not implemented at the time of this writing).

# STAT+ (~~status from the panel to the controller~~)

# STAT+ (not used)

# STAT-

# 12V+ (used to power the isolated inteface in the controller)

# 12V- (data ~~ground~~ and interface power - NOT ~~EARTH~~)

# 12V- (isolated data common and interface power - NOT Earth or cable shield)

# DATA+ (control data from the controller)

# DATA-

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==== AX Fiber optic cable ====

Use Multi-mode Duplex cable with two ST connectors at each end. Use care when installing the cable to prevent kinks and damage to the ends. The ends should be marked by color, number or with specification text on one channel of the 'zip' cord. Whichever channel is plugged into the left STATUS of the tower panel, also connects to the left STATUS connector on the rear of the AX touch screen controller. The opposite color should be plugged into the right DATA connectors at both ends.

Use [[Optical_fiber_interface|Multi-mode Duplex cable]] with two ST connectors at each end. Use care when installing the cable to prevent kinks and damage to the ends. The ends should be marked by color, number or with specification text on one channel of the 'zip' cord. Whichever channel is plugged into the left STATUS of the tower panel, also connects to the left STATUS connector on the rear of the AX touch screen controller. The opposite color should be plugged into the right DATA connectors at both ends.

For multipanel carillon installations, only Panel 1 will have the optical interface. Parallel the 485 terminals of Panel 1 and the additional panel(s).

=== LX Systems ===

==== LX Systems ====

[[File:LX.jpg|~~thumb|200px]]~~

[[File:LX.jpg|LX ouput|thumb|200px]]

~~[[File:AX 3700Panel.jpg.jpg~~|thumb|200px]]

Sufficient power is available from the 12V terminals of the interface to operate the LX control panel. If the data cable length causes the supply voltage to drop so that the LX control panel does not operate, try the following remedies.

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Chassis ground for the LX controller pins 3 and 6 can be obtained using the bottom right mounting screw of the relay panel's interface module.

=== DC Striker outputs ===

==== 3721 Combo Module ====

One DC striker output is provided on the Combo Module. Connect one 200 VDC striker or hammer to the '''POS''' and '''NEG''' terminals. Polarity does not matter.

==== 3731 Quad DC Striker Module ====

Four DC striker outputs are provided on each of these modules. Typically the bells are connected to the outputs from left to right in order of size, large to small.

For five striker outputs, a combo module may be installed to the right of the quad module. The bell that connects to the Combo module is the largest bell. The smaller bells will be connected left to right in order of size to the quad module.

Polarity + (POS, Positive) and - (NEG, Negative) refers to the power supply connection. Strikers and hammers do not care about their polarity connection. In some cases (for smaller bells) a common positive line may be run to the tower from a '''POS''' output terminal for up to four strikers.

Typically a pair of wires from the striker will connect to two terminals:

* '''POS''' terminals are all bussed together on the module

* '''OUT1''' .. '''OUT4''' use advanced transistors to pulse the Negative 200VDC supply to the strikers

Double check stranded wiring to be sure the output terminals do not have stray wire strands that might short the outputs. The output fuses rarely protect the transistors from shorted outputs.

=== Swinging motor outputs ===

==== 3721 Combo Module ====

This module supports up to three swinging bells.

Connect low current swinging motor enable lines to the 3740 Relay modules as follows:

* intelliSwing motor panel '''L1 OUT''' (from logic circuit breaker) connects to 3721 '''FUSED INPUT''' terminal

* intelliSwing motor panel '''S1 IN''' (switch input) connects to 3740 '''1 N.O.''' terminal

** subsequent motors similarly connect to their respective outputs.

==== 3740 Quad Relays ====

This module has four normally open dry contacts with a common input.

Connect low current swinging motor enable lines to the 3740 Relay modules as follows:

* intelliSwing motor panel '''L1 OUT''' (from logic circuit breaker) connects to 3740 '''INPUT''' terminal

* intelliSwing motor panel '''S1 IN''' (switch input) connects to 3740 '''OUT1''' terminal

** subsequent motors similarly connect to their respective outputs

** the dual 3740 '''INPUT''' terminals may be used to daisy chain modules for more than four outputs

=== Other output options ===

High current solid state relays may be used to switch AC or DC loads as may be required for special applications. These connections will be made to terminals provided according hookup diagrams supplied with the panel.

== Troubleshooting ==

=== Lights in normal operation ===

Interface module

[[File:BC-CIF-3703-TestButton.png|400px|thumb|right|Long press to test]]

[[File:BC-CIF-3703-TestButton.png|400px|thumb|right|Long press to enter self test mode]]

* ACTIVE: indicates the high voltage relays are enabled. Indicated from logic before drive transistor.

** Active only on when outputs are active. Resets at end of concert.

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* Two modules error lights do not come on (other modules do)

** Modules at the same address must be the same module type - the modules with Err lights off are the problem

* Modules have error lights regardless of switch setting

** Check that the ribbon cable connection on all modules is fully seated

==== Operational error ====

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*** doesn't fire output

*** discards all output timing edits

** Click Test - cancel repeat/scan modes, reverse direction

** Click Test - cancel repeat/scan modes, reverse output step direction

** Click Step - cancel repeat/scan, go to next available output and fire

** Click Repeat - cancel repeat/scan, fire current output again

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Does not affect motor enable outputs to intelliSwing panels, but will affect Relay modules if used to trigger striker outputs.

~~Initial~~ pulse times ~~available~~ (milliseconds - Input LED ~~blinks~~):

Available striker pulse times (milliseconds - setting is indicated by blinking Input LED):

:75 - one blink - only for very small bells in chimes and carillons for faster repeat

:100 - two blinks - (Carillon panel 3 default)

:150 - three blinks - (Carillon panel 2 default)

:200 - four blinks - Default (most panels)

:~~250~~ - five blinks

:300 - five blinks - Deagan 'O' type striker

Only use the following for Deagan or motorized strikers

:550 - six blinks

:550 - six blinks - Deagan 'G' or 'L' type stiker

:600 - seven blinks

:600 - seven blinks - Deagan 'F' type striker

:650 - eight blinks

Click the Step button to get to desired bell output, then long press Step or Repeat until Input LED indicates new pulse width.

* Long Press Step - (up) lengthen output pulse

* Long Press Repeat - (down) shorten pulse

* Click Repeat - re-test using new pulse

* Double click Test - revert to last saved pulse times (losing any recent changes)

* Long Press Test - saves newly selected timing for all bells before exiting self test

** During save, Input LED blinks four times

* Double click Test - revert to last saved pulse times (losing any recent changes)

If you want to reset to default pulse times to factory defaults:

* Change the module configuration as follows

** Power off the panel

** Unplug ribbon bus from one of the modules

** Power on, wait for two seconds and power back off

** Plug the ribbon bus back into the module

** Power on the panel

== Other applications ==

=== Minute impulse clocks ===

This application requires a 3721 combo module with dry contacts to switch the voltage to the minute impulse clock movements.

* set all three Panel address switches ON

* set map switch 4 ON

* set high baud ON if system plays music (speakers or bell clappers)

* output 2 N.O. is odd minutes

* output 3 N.O. is even minutes

* a single DC tolling hammer output is provided to ring the hour

=== Deagan Damper relay ===

This relay panel supports up to 32 Damper outputs to be used in conjunction with a striker panel for single tone or harmonic Deagan Tower Chimes. We have improved upon Deagan's model 72-74 mechanical relays in conjunction with our Libertas AX controller.

* Harmonic bells supported with a sustain pedal that works like a piano during chord changes

* Single tone (melody only) playing never requires sustain pedaling or legato keying

* Adjustable transition time to delay note muting

This application requires '''DAMPER''' firmware installed on the interface module.

* set the Panel Configuration switches the same as the striker output panel

Refer to the [[Bell_Control_Technical_Data_3700#Adjust_output_pulse_time|pulse setting instructions]] above to adjust the transition time between notes while in the self test mode. This is a single setting for all notes in the chime (unlike striker pulse timing). Exiting self test mode will save the adjustment permanently to non-volatile memory.

When new notes are played, the transition time allows the previous note to ring longer before its Damper is released to mute the note. This time is adjustable in eight steps from none (immediate mute) to one second.

~~If you want to reset to default pulse times~~

== Repairs ==

* Change the module ~~configuration (unplug a~~ module ~~temporarily) and cycle power~~

Do not unplug cables or make wiring changes while module power lights are on. Turn off circuit breakers or disconnects first.

When replacing a module with a configuration or address switch. Make sure that the switch on the replacement module matches that of the original module before powering the panel.

=== DC Striker Module ===

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** Return the module to Chime Master for replacement/rework if any measurement is less than 0.35 Volts

== ~~Repairs~~ ==

=== Combo Module ===

~~Do not unplug cables or make wiring changes while~~ module ~~power lights are on. Turn off circuit breakers or disconnects first~~.

To test the striker output of the Combo module, use the steps above as for the DC Striker Module.

* Hold the red meter probe to the bottom of the striker fuse

~~When replacing a module with a configuration or address switch. Make sure that~~ the ~~switch on~~ the ~~replacement module matches that~~ of the ~~original module before powering~~ the ~~panel~~.

* Touch the black meter probe to the middle lead of Q1

** The voltage drop should be around 0.5 Volts - shorted outputs will be near 0 Volts (and fuse will be blown - do not replace)

[[Category:Installation]]

[[Category:Troubleshooting]]

@@ Line 47: / Line 47: @@
 === Module Address Switch ===
-Typical chime and carillon Striker Modules are numbered left to right as 1 through 5. Set module 4 as 3+1, module 5 as 3+2. Only large carillons will have a module 0 (all off) to the left of 1.
+Module addresses are human readable (not binary). The switches are numbered 1 to 3 left to right at the top of each module. Set module 4 as 3+1, module 5 as 3+2.
-For non-musical controls there will typically be up to two DC Striker modules and up to two Relay modules. The Striker modules are numbered 0 (all off) and 1, and the relay modules are numbered 2 and 3.
+For single panels needing 25 to 32 note outputs, module number 7 (switches 1+2 ON) and 8 (all switches ON) will be specified, but these addresses are generally reserved for Combo modules.
-Combination Modules do not have address switches.
+==== Non-musical controls ====
+Combo Modules do not have address switches. If two are used, the second one will have its address jumper soldered.
+Quad output modules are set as follows:
+* First striker module 0 - All switches OFF
+* Second striker module 1 - Switch 1 ON
+* First motor relay module 2 - Switch 2 ON
+* Second motor relay module 3 - Switch 3 ON
+==== Chimes ====
+Single panel of up to four modules numbered left to right.
+* Interface configuration Map switch 5 is ON.
+Modules addressed from 0 up to 3
+* Up to 13 diatonic notes plus the leading tone, sharp 4th and flat 7th semitones
+Modules addressed from 1 up to 4
+* Up to 15 diatonic notes plus the flat 7th semitone
+If other semitones are needed, use a carillon configuration skipping outputs as not needed.
+==== Carillon panels ====
+Carillon panels come in three sizes. Notes given are for a non-transposed instrument. Transposition is set up in the controller if needed.
+* Interface configuration Map switch 6 is ON.
+===== Five output modules =====
+Up to three 20 output panels support five octaves minus one semitone. Address the modules from 1 to 5:
+* Panel 1 skips first semitone for notes C to G#
+* Panel 2 outputs notes A to E
+* Panel 3 outputs notes F to C
+===== Six output modules =====
+Three 24 output panels support six octaves fully chromatic. Address the modules from 0 to 5:
+* Panel 1 outputs notes C to B (first two octaves)
+* Panel 2 outputs notes C to B (third and fourth octaves)
+* Panel 3 outputs notes C to B (fifth and sixth octaves)
+Custom mapping available for sub-bourdons and missing semitones.
+===== Seven or eight output modules =====
+From 25 to 32 fully chromatic outputs on a single panel. Address the modules from 0 to 7:
+* Module 6: 1 and 2 ON
+* Module 7: 1, 2 and 3 ON
 == Installation ==
@@ Line 57: / Line 95: @@
 Strip input and output wires to 3/8 inch (10mm) for lever action terminals. Take care to insert all strands of wire into the terminal and that they do not contact each other outside the terminal.
+=== Interface to controller ===
-=== AX Systems ===
+==== AX Systems with data cable ====
-[[File:3700 AX Connection.jpg.jpg|thumb|200px]]
+[[File:3700 AX Connection.jpg.jpg|AX output|thumb|200px]]
-[[File:AX 3700Panel.jpg.jpg|thumb|thumb|200px]]
+[[File:AX 3700Panel.jpg.jpg|3700 input|thumb|200px]]
 The 485 input connector is pinned out one to one the same as the AX tower connector. When multiple panels are used, parallel the data cable to all panels.
@@ Line 66: / Line 104: @@
 Four wires (two twisted pairs) are enough unless AX STATUS mode is used (not implemented at the time of this writing).
-# STAT+ (status from the panel to the controller)
+# STAT+ (not used)
 # STAT-
 # 12V+  (used to power the isolated inteface in the controller)
-# 12V-  (data ground and interface power - NOT EARTH)
+# 12V-  (isolated data common and interface power - NOT Earth or cable shield)
 # DATA+ (control data from the controller)
 # DATA-
@@ Line 77: / Line 115: @@
 ==== AX Fiber optic cable ====
-Use Multi-mode Duplex cable with two ST connectors at each end. Use care when installing the cable to prevent kinks and damage to the ends. The ends should be marked by color, number or with specification text on one channel of the 'zip' cord. Whichever channel is plugged into the left STATUS of the tower panel, also connects to the left STATUS connector on the rear of the AX touch screen controller. The opposite color should be plugged into the right DATA connectors at both ends.
+Use [[Optical_fiber_interface|Multi-mode Duplex cable]] with two ST connectors at each end. Use care when installing the cable to prevent kinks and damage to the ends. The ends should be marked by color, number or with specification text on one channel of the 'zip' cord. Whichever channel is plugged into the left STATUS of the tower panel, also connects to the left STATUS connector on the rear of the AX touch screen controller. The opposite color should be plugged into the right DATA connectors at both ends.
 For multipanel carillon installations, only Panel 1 will have the optical interface. Parallel the 485 terminals of Panel 1 and the additional panel(s).
-=== LX Systems ===
+==== LX Systems ====
-[[File:LX.jpg|thumb|200px]]
+[[File:LX.jpg|LX ouput|thumb|200px]]
-[[File:AX 3700Panel.jpg.jpg|thumb|200px]]
 Sufficient power is available from the 12V terminals of the interface to operate the LX control panel. If the data cable length causes the supply voltage to drop so that the LX control panel does not operate, try the following remedies.
@@ Line 98: / Line 135: @@
 Chassis ground for the LX controller pins 3 and 6 can be obtained using the bottom right mounting screw of the relay panel's interface module.
+=== DC Striker outputs ===
+==== 3721 Combo Module ====
+One DC striker output is provided on the Combo Module. Connect one 200 VDC striker or hammer to the '''POS''' and '''NEG''' terminals. Polarity does not matter.
+==== 3731 Quad DC Striker Module ====
+Four DC striker outputs are provided on each of these modules. Typically the bells are connected to the outputs from left to right in order of size, large to small.
+For five striker outputs, a combo module may be installed to the right of the quad module. The bell that connects to the Combo module is the largest bell. The smaller bells will be connected left to right in order of size to the quad module.
+Polarity + (POS, Positive) and - (NEG, Negative) refers to the power supply connection. Strikers and hammers do not care about their polarity connection. In some cases (for smaller bells) a common positive line may be run to the tower from a '''POS''' output terminal for up to four strikers.
+Typically a pair of wires from the striker will connect to two terminals:
+* '''POS''' terminals are all bussed together on the module
+* '''OUT1''' .. '''OUT4''' use advanced transistors to pulse the Negative 200VDC supply to the strikers
+Double check stranded wiring to be sure the output terminals do not have stray wire strands that might short the outputs. The output fuses rarely protect the transistors from shorted outputs.
+=== Swinging motor outputs ===
+==== 3721 Combo Module ====
+This module supports up to three swinging bells.
+Connect low current swinging motor enable lines to the 3740 Relay modules as follows:
+* intelliSwing motor panel '''L1 OUT''' (from logic circuit breaker) connects to 3721 '''FUSED INPUT''' terminal
+* intelliSwing motor panel '''S1 IN''' (switch input) connects to 3740 '''1 N.O.''' terminal
+** subsequent motors similarly connect to their respective outputs.
+==== 3740 Quad Relays ====
+This module has four normally open dry contacts with a common input.
+Connect low current swinging motor enable lines to the 3740 Relay modules as follows:
+* intelliSwing motor panel '''L1 OUT''' (from logic circuit breaker) connects to 3740 '''INPUT''' terminal
+* intelliSwing motor panel '''S1 IN''' (switch input) connects to 3740 '''OUT1''' terminal
+** subsequent motors similarly connect to their respective outputs
+** the dual 3740 '''INPUT''' terminals may be used to daisy chain modules for more than four outputs
+=== Other output options ===
+High current solid state relays may be used to switch AC or DC loads as may be required for special applications. These connections will be made to terminals provided according hookup diagrams supplied with the panel.
 == Troubleshooting ==
 === Lights in normal operation ===
 Interface module
-[[File:BC-CIF-3703-TestButton.png|400px|thumb|right|Long press to test]]
+[[File:BC-CIF-3703-TestButton.png|400px|thumb|right|Long press to enter self test mode]]
 * ACTIVE: indicates the high voltage relays are enabled. Indicated from logic before drive transistor.
 ** Active only on when outputs are active. Resets at end of concert.
@@ Line 138: / Line 212: @@
 * Two modules error lights do not come on (other modules do)
 ** Modules at the same address must be the same module type - the modules with Err lights off are the problem
+* Modules have error lights regardless of switch setting
+** Check that the ribbon cable connection on all modules is fully seated
 ==== Operational error ====
@@ Line 154: / Line 230: @@
 *** doesn't fire output
 *** discards all output timing edits
-** Click Test - cancel repeat/scan modes, reverse direction
+** Click Test - cancel repeat/scan modes, reverse output step direction
 ** Click Step - cancel repeat/scan, go to next available output and fire
 ** Click Repeat - cancel repeat/scan, fire current output again
@@ Line 164: / Line 240: @@
 Does not affect motor enable outputs to intelliSwing panels, but will affect Relay modules if used to trigger striker outputs.
-Initial pulse times available (milliseconds - Input LED blinks):
+Available striker pulse times (milliseconds - setting is indicated by blinking Input LED):
 :75 - one blink - only for very small bells in chimes and carillons for faster repeat
 :100 - two blinks - (Carillon panel 3 default)
 :150 - three blinks - (Carillon panel 2 default)
 :200 - four blinks - Default (most panels)
-:250 - five blinks
+:300 - five blinks - Deagan 'O' type striker
 Only use the following for Deagan or motorized strikers
-:550 - six blinks
+:550 - six blinks - Deagan 'G' or 'L' type stiker
-:600 - seven blinks
+:600 - seven blinks - Deagan 'F' type striker
 :650 - eight blinks
 Click the Step button to get to desired bell output, then long press Step or Repeat until Input LED indicates new pulse width.
 * Long Press Step - (up) lengthen output pulse
 * Long Press Repeat - (down) shorten pulse
 * Click Repeat - re-test using new pulse
-* Double click Test - revert to last saved pulse times (losing any recent changes)
 * Long Press Test - saves newly selected timing for all bells before exiting self test
 ** During save, Input LED blinks four times
+* Double click Test - revert to last saved pulse times (losing any recent changes)
+If you want to reset to default pulse times to factory defaults:
+* Change the module configuration as follows
+** Power off the panel
+** Unplug ribbon bus from one of the modules
+** Power on, wait for two seconds and power back off
+** Plug the ribbon bus back into the module
+** Power on the panel
+== Other applications ==
+=== Minute impulse clocks ===
+This application requires a 3721 combo module with dry contacts to switch the voltage to the minute impulse clock movements.
+* set all three Panel address switches ON
+* set map switch 4 ON
+* set high baud ON if system plays music (speakers or bell clappers)
+* output 2 N.O. is odd minutes
+* output 3 N.O. is even minutes
+* a single DC tolling hammer output is provided to ring the hour
+=== Deagan Damper relay ===
+This relay panel supports up to 32 Damper outputs to be used in conjunction with a striker panel for single tone or harmonic Deagan Tower Chimes. We have improved upon Deagan's model 72-74 mechanical relays in conjunction with our Libertas AX controller.
+* Harmonic bells supported with a sustain pedal that works like a piano during chord changes
+* Single tone (melody only) playing never requires sustain pedaling or legato keying
+* Adjustable transition time to delay note muting
+This application requires '''DAMPER''' firmware installed on the interface module.
+* set the Panel Configuration switches the same as the striker output panel
+Refer to the [[Bell_Control_Technical_Data_3700#Adjust_output_pulse_time|pulse setting instructions]] above to adjust the transition time between notes while in the self test mode. This is a single setting for all notes in the chime (unlike striker pulse timing). Exiting self test mode will save the adjustment permanently to non-volatile memory.
+When new notes are played, the transition time allows the previous note to ring longer before its Damper is released to mute the note. This time is adjustable in eight steps from none (immediate mute) to one second.
-If you want to reset to default pulse times
+== Repairs ==
-* Change the module configuration (unplug a module temporarily) and cycle power
+Do not unplug cables or make wiring changes while module power lights are on. Turn off circuit breakers or disconnects first.
+When replacing a module with a configuration or address switch. Make sure that the switch on the replacement module matches that of the original module before powering the panel.
 === DC Striker Module ===
@@ Line 199: / Line 308: @@
 ** Return the module to Chime Master for replacement/rework if any measurement is less than 0.35 Volts
-== Repairs ==
+=== Combo Module ===
-Do not unplug cables or make wiring changes while module power lights are on. Turn off circuit breakers or disconnects first.
+To test the striker output of the Combo module, use the steps above as for the DC Striker Module.
+* Hold the red meter probe to the bottom of the striker fuse
-When replacing a module with a configuration or address switch. Make sure that the switch on the replacement module matches that of the original module before powering the panel.
+* Touch the black meter probe to the middle lead of Q1
+** The voltage drop should be around 0.5 Volts - shorted outputs will be near 0 Volts (and fuse will be blown - do not replace)
 [[Category:Installation]]
 [[Category:Troubleshooting]]