The
PETERSON
ORGAPLEX™ SWITCHING SYSTEM
INSTALLATION INSTRUCTIONS
DESCRIPTION OF OrgaPlex™ SYSTEM TYPES
Peterson currently offers two alternate
configurations of the OrgaPlex Coupler/Switching System circuitry.
This is because in early 1991, Peterson introduced the OrgaPlex
Master Coupler system, which greatly simplifies the application
of OrgaPlex to most organs of up to four manuals.
The OrgaPlex Master Coupler incorporates
the circuitry for virtually all couplers that would be required
on up to a four manual instrument into a single "base system"
assembly of circuit boards. Couplers may be included in the specification
by simply running a wire from the coupler tablet to a pre-labelled
pin on the Master Coupler Mother Board. The same Master Coupler
mother board serves as the console junction for the OrgaPlex
plug-in main cable, and also as the key junction if Peterson keying
cables for OrgaPlex are used. This recent development also makes
the addition of a transposer, manual transfer, and even MIDI and
Orga-Play™ performance reproducing system options
a much simpler matter.
The OrgaPlex Master Coupler is a
revolutionary development to the already very successful OrgaPlex
product line. However, in some instances such as very large or
very specialized specifications, our traditional "Original
OrgaPlex " system will be provided. These instructions include
information on the "Original OrgaPlex" system.
If you are unclear as to which type
of system you have, simply look for certain key circuit boards.
The Original OrgaPlex system will always have plug-in cards on
the console section of the system with the names "Strobe
Register", "Keyboard Driver", and "Clock/Transposer"
printed on the front of the boards. Master Couplers™
have a Mother Board printed with the name Master Coupler™
in the console section.
MOUNTING
Carefully unpack the OrgaPlex Switching
System and check for any obvious shipping damage. OrgaPlex witching
Systems are normally supplied with their assemblies mounted on
two panels. One panel is the (console) Multiplexing panel as
shown in Figures 1A-C, and the other is the (chamber) Demultiplexer/Driver
panel, shown in Figure 2. For coupler-only OrgaPlex systems, the
Demultiplexer/Drivers will normally be included on the Peterson
Solid State Switching System panel.
The Multiplexing panel is intended
to be mounted in the console. Even the largest four manual systems
are usually on a maximum panel size of 24" x 40" and
should easily fit within the console. The Demultiplexer/Driver
panel(s) should be mounted in the organ near the chests they are
intended to work.
After identifying the two types
of panels, mount the Multiplexing panel in the console, preferably
oriented as shown in Figure 1A-C. Mount the Demultiplexer/Driver
panel(s) in the chamber(s). Keep in mind the routing of chest
cables and accessibility for ease of working on the system when
choosing a location.
WIRING
DEMULTIPLEXER/DRIVER PANEL
Wire the chest cables to the supplied
output boards, numbered #4060XX, which are plugged onto the Demultiplexer/Driver
assemblies. Refer to Figure 2 and the drawing supplied with your
OrgaPlex System. The treble end of the Demultiplexer/Driver is
closest to the connections for organ positive and negative and
can also be identified by the single-pin or eight-pin connector.
The rank assigned to each Demultiplexer/Driver
is labeled on its printed circuit board with a typed label and
can also be identified from the drawing supplied with each OrgaPlex
System.
Connect the organ power supply (rectifier)
feed wires to the Test and Power Junction #400480, in the polarity
as marked. Reversal of the polarity will cause damage.
The required size of the feed wires can be determined by using
the "Organ Power Supply and Feed Wire Worksheet" which
is at the end of these instructions.
MULTIPLEXING PANEL
KEYBOARDS
When PETERSON Modular Key Contact
Rails or Mastertouch™ Keyboards are used, cables will
be supplied that simply plug in. On original OrgaPlex Systems
the 12 pin connectors plug onto the Keyboard Junction #404640
and the 8 pin connector(s) plug onto their respective Division
Encode boards #400603. Refer to Figure 1A for locations.
If other types of contacts are to
be used, they must be wired as follows. Refer to Figure 3 for
keyboard wiring details. "Isolation" diodes must be
installed in series with each contact. The polarity of this diode
is important. On original OrgaPlex Systems the anode (non-banded
end) must be toward the contact (or common), the cathode (banded
end) toward the individual note wires. Diode Board assemblies
in 61 note (#404664) and 32 note (#404663) versions may be purchased
from PETERSON.
CAUTION: THE POLARITY OF THESE ISOLATION DIODES IS OPPOSITE in the original
OrgaPlex and Master Coupler Systems. Be certain to use the proper polarity for
your system.
Wire all of the contacts (diodes)
for the note "C" together and to the "C" terminal
on the keyboard junction (see Figures 3 and 4) then wire all of
the C#s together, etc.
The key contact common(s) must be
split into octave busses (see Figures 3 and 4). The six octave
busses for manuals (3 octave busses for pedal) then wire separately
to their respective Division Encode Board #400603 on original
OrgaPlex Systems.
If the OrgaPlex System is being
used for an addition to an organ that still requires D.C. keying
for the existing relay, or if the key common(s) can't be broken
into octave busses, D.C. Key Encoders can be provided for positive
keying only. Refer to Figure 1C for a typical layout and wiring
diagram for this type system. These D.C. Key Encoders (61 and/or
32 note) will be supplied with a key junction where the key contacts
are to be wired. Cables from the D.C. Key Encoders to the OrgaPlex
System will be pre-wired and installed. Additional "isolation"
diodes are not needed when D.C. Key Encoders are used.
STOP CONTACTS
The stop control contacts should
be wired to a Stop Junction such as #404260. This Stop Junction
may be provided as part of the OrgaPlex System or Combination
Action, or mounted separately within the console. A prewired
cable, from the OrgaPlex Coupler/Unit Register boards is supplied
that will then plug onto the Stop Junction.
Stop Encoders can be provided that
allow stop and shade control wires to be "OrgaPlexed"
and sent through the OrgaPlex Main Cable to Demultiplexer/Driver(s)
in the chamber. These are available in 61 and 48 input sizes for
use on Stop Junctions. Interconnect cables are provided for connection
to the OrgaPlex System.
POWER
There are two sources of power for
the OrgaPlex System. The Logic Power Supply is a 9 volt D.C.
Regulator Board #404674 mounted on the console panel. Its purpose
is to supply a clean, regulated source of D.C. voltage to run
the scanning and Coupler/Unit Register circuits. It receives its
power from a plugin Class II, 12 VAC, 20 VA transformer.
On larger systems this transformer may be a 30 or 40 VA unit.
There will be a clearcoated, tagged pair of wires with
lugs on the end exiting the wiring duct on the right side of the
panel. This is to connect to the secondary screws of the transformer
which can be plugged into an unswitched or rectifier switched
outlet (the Regulator Board has its own cut-out relay). If a
Peterson Console AC Control System is used, these wires may be
connected to the screw terminals labelled "OrgaPlex12 VAC"
instead of using a separate plug-in transformer.
The OrgaPlex system must also be
connected to the organ rectifier. There is a Test and Power Junction
#400480 located on the Multiplexing panel in the console. It
receives, through the main cable, organ rectifier voltage from
the Demultiplexer Panel in the chamber. The current capacity
of the OrgaPlex Main Cable is sufficient to run the stop feeds
and turn on the Regulator Board as well as any other OrgaPlex
requirements. If the organ has a combination action, the OrgaPlex
cable will not be sufficient to feed power to move the stop actions
in the console. The current for moving the stop action magnets
must be fed by either an optional PETERSON Pulse Power Supply
in the console or separate feed wires from the organ rectifier
sufficient to operate the stop action magnets. The required size
of the feed wires can be determined by using the "Organ Power
Supply and Feed Wire Worksheet" which is at the end of these
instructions, or contact the PETERSON factory about your specific
requirements.
TRANSPOSER
If your system was ordered with
the Rotary Transposer Switch Option, it will be equipped with
a prewired 13 position rotary switch with its associated
hardware and engraved plate. The cable provided is 8 feet long.
Mount the rotary switch in the desired location in the console.
Route the cable to the OrgaPlex console panel. This cable plugs
into a 24 pin double row junction labeled "Transposer Switch"
located just below the Keyscan Mother board on the left end of
an original OrgaPlex panel (see Figures 1A-C). This "Transposer
Switch" junction is normally supplied with a jumper connector
(pins 18) in place, to select the neutral "key of C"
position. Remove this jumper connector and install the connector
from the switch. Be sure to align the number 1 on the switch connector
to the #1 pin on the junction. Note: the system must have either
the jumper connector (18) or the transposer switch connector
on this "Transposer Switch" junction to operate.
DIGITAL TRANSPOSER SELECTOR OPTION
The optional Digital Transposer
Selector Assembly consists of a control panel with "up"
and "down" selector buttons and an LED numerical display,
a circuit board, and a pre-wired interconnect cable. The circuit
board is designed to plug onto the connector pins on the double
row junction labeled "Transposer Switch" on an original
OrgaPlex system (see Figures 1A-C). After mounting the control
panel on the console, simply plug in the circuit board and route
the cable neatly.
TRANSPOSER WIREBACK BOARDS
When the transposer is set to a
flat position, it is possible to "run out of pipes"
for the lowest notes in the bottom octave. The remedy for this
is "wireback circuitry" incorporated into #404666 Wireback
Boards for use on original OrgaPlex systems. This wireback circuitry
will cause the bottom octave to "wire back" when transposing
flat. For example, playing C1 and transposing flat one step on
the switch will play B1. A separate Wireback Board is required
for each keyboard when an original OrgaPlex system is used. If
a transposer option is specified with your order, Wireback Boards
will be installed as required. The Wireback Boards will always
be located on the first Coupler/Unit Register Mother Board above
the Coupler/Unit Registers. Original OrgaPlex Systems that were
not ordered with a Transposer Option will have Wireback Dummy
Boards installed in place of the Wireback Boards. The Transposer
Switch Junction will be prewired to these Wireback Dummy Boards.
Adding either Transposer Option at a later date can be done quite
simply by replacing the Wireback Dummy Boards with the Wireback
Boards and plugging in the switch or digital selector.
MANUAL TRANSFER
On organs using an original OrgaPlex
where a great/choir manual transfer is desired, two additional
Coupler/Unit Register boards will be cross wired to achieve this
effect.
MIDI
Provisions for connecting "MIDI"
devices has been integrated into OrgaPlex Systems. Refer to the
PETERSON MIDI Resource System Installation Manual for complete
information, or contact the PETERSON factory regarding this specialized
feature.
PLAYER INTERFACE
The Peterson OrgaPlay Reproducing
System can be easily connected to the OrgaPlex System. Simply
plug in the Player Interface (supplied with the OrgaPlay System)
into the appropriate position (see Figure 1A and OrgaPlay Manual
for details).
INITIAL TEST OF ORGAPLEX
SYSTEM AFTER INSTALLATION
PLEASE READ THIS SECTION BEFORE APPLYING ANY POWER!
It is recommended that once you
have installed your OrgaPlex System, and have it wired to the
chest(s), organ rectifier, and console, you use the following
procedure for testing its operation.
First remove all chest output connectors from their Demultiplexer/ Driver(s)
and unplug the Class II Transformer or disconnect the wires from the Console
AC Control System's "OrgaPlex 12 VAC" screw terminals.
Turn on the organ rectifier and check to see that the power light on the
"Test and Power Junction" is illuminated. An illuminated power
light indicates that a voltage of the proper polarity is applied to the
OrgaPlex System. IF IT DOES NOT LIGHT, REMOVE THE ORGAN POWER
IMMEDIATELY, and confirm the polarity of the connections before
proceeding. Lighted Data Stream Indicators (also referred to as Lighted Path
Indicators) on the Demultiplexer/Driver(s) may come on during this test. The
Troubleshooting section describes the operation of the Lighted Path
Indicators.
Next, plug in the Class II Transformer or connect the wires to the Console AC
Control System's "OrgaPlex 12 VAC" screw terminals and observe the
Lighted Path Indicators on the OrgaPlex panels. None of the
Demultiplexer/Driver lights should be on at this time. In the console on the
original OrgaPlex Keyscan Base System there should be lights lit on the Strobe
Register, Clock/Transposer, Keyboard Driver and in the lower left corner of
the Mother Board. If any other L.E.D.s are lit proceed to the Troubleshooting
section.
Now test each note (magnet) of each rank by energizing their chest magnets in
the following manner. Using a test wire connected to organ positive, apply
power to each chest connection on each output connector previously removed
from the Demultiplexer/ Driver(s). Notes which do not play from this point
have defects within the chest cable, magnet, chest, pipe, etc. These defects
should be repaired before proceeding. The output connectors may be plugged
back into the Demultiplexer/Drivers after this test.
The OrgaPlex System is now ready to test from the console. Play each note of
every stop for all of the manuals. Write a list of any problems that may be
encountered. This will aid in determining whether the cause is in the keys,
stops, couplers, unit stops, etc.
Bear in mind that dead or ciphering notes or stops may be due to contact or
wiring defects. These can be confirmed or discounted by unplugging the
appropriate key or stop connector from the OrgaPlex System. If the problem is
found to be in the OrgaPlex System, repair assistance will be found in the
Troubleshooting section.
If you are unable to repair any malfunction with the information provided in
this manual, call us at 1-(708) 3883311 or
1(800)3413311.
TROUBLESHOOTING
DESCRIPTION OF OPERATION OF THE LIGHTED
DATA STREAM INDICATORS
Light Emitting Diodes (L.E.D.s) are incorporated on each circuit board module. These L.E.D.s and a test wire are normally all that is required for troubleshooting purposes. The Lighted Data Stream Indicators may also be referred to as Lighted Path Indicators. Refer to Figures 6, 7 and 8 for locations of these indicators. In normal operation with no keys depressed, the only L.E.D.s that should be lighted are on the Keyboard Driver #404601, Transposer/Clock #404602, Strobe Register #404621 and the Keyscan Base System Mother Board.
These lights will appear to be lit
all the time. Actually, they are blinking or sequenced at a speed
so high that the blinking is not detectable. Depressing and holding
the "System Slow Down" button on the Clock/Transposer
board will slow down the cycle to a speed that makes the sequencing
very apparent.
In the System Slow Down mode, the
L.E.D. on the Clock/Transposer board will flash at a rate that
makes it appear to flutter. The Keyboard Driver's note L.E.D.s
will repeatedly sequence in a sweeping fashion, from note "B"
through "C". The Octave L.E.D.s on the Mother Board
will step, in order, from Octave 6 through 1, changing with each
sweep of the note L.E.D.s. The Strobe Register L.E.D. will light
when the Octave 1 L.E.D. goes off and will remain lit until the
Octave 4 L.E.D. comes on again. Also, the note L.E.D.s will sweep
5 times during the period between Octave 1 going off and Octave
6 coming back on. If these L.E.D.s do not indicate as described
for normal and System Slow Down mode of operation, contact the
PETERSON factory for assistance.
The L.E.D.s on the OrgaPlex Division
Encode Boards #404603 operate as follows: the L.E.D.s will be
off until one or more keys are depressed. This L.E.D. will then
come on and stay on until the key(s) are released. This L.E.D.
thus indicates the presence of serial data on the output of this
board.
In the System Slow Down mode it
can be observed that this L.E.D. actually comes on when the depressed
key is scanned (i.e. with middle "C" depressed, when
the Note L.E.D.s sweep through "C" and when the Octave
3 L.E.D. comes on, the Division Encode light will then light.
The Division Encode light goes off again one note sweep before
the Octave 6 L.E.D. comes on again).
The L.E.D.s on the OrgaPlex Coupler/Unit
Register boards #404606 and All Pitch Unit Register #404666 operate
in a similar fashion. However, a stop (or unison) must also be
on, before the data is indicated on the output.
After all of the desired coupling
and unification or borrowing has been accomplished, the appropriate
outputs of Coupler/Unit Register boards are connected, through
the main cable, to their proper Demultiplexer/Driver(s) in the
chamber.
Three "Lighted Path" L.E.D.s
on each Demultiplexer/Driver operate as follows: L.E.D. #1 closest
to the treble end indicates input data before it is demultiplexed.
L.E.D. 2 near the bass end indicates the data has passed all the
way through the demultiplexer and L.E.D. 3 monitors data half
way down the line. (These L.E.D.s do not work in the System Slow
Down mode, unless the "Test" terminal on the Demultiplexer/Driver
is connected to positive.)
Two totally independent Lighted
Path Indicator test L.E.D.s are also provided. Attaching a test
wire to the binding posts for these test L.E.D.s will permit testing
at points between boards, on the interconnect cable pins or at
the junction boards. One of these test L.E.D.s is located on
the OrgaPlex Keyscan Base System Mother Board, the other on the
Chamber Junction board, on the chamber panel. These test
L.E.D.s will only be illuminated when a circuit is completed through
the corresponding binding post. In normal operation they will
not light.
Note: The brightness of the L.E.D.s
on the Division Encode, Coupler/Unit Register, All Pitch Unit
Register, and Demultiplexer/ Driver boards and independent test
points will vary depending on which keys are played. Higher notes
will appear to be brighter. Also, on each Demultiplexer/Driver
there is a Test Point 6 (TP6), and corresponding light L.E.D.
4, that are to be used for D.C. testing. With a wire attached
to TP6 the D.C. outputs of the Demultiplexer/Driver can be checked.
USE OF THE LIGHTED DATA STREAM
INDICATORS
If a problem occurs, it should be
easy to isolate with the Lighted Path Indicator L.E.D.s. The following
examples show the proper method to use in finding problems.
Example 1: If the unit flute rank
(for example, #4 in Figures 2
and 8) is dead on all manuals on
which it plays, turn on one of the stop controls (Swell 8') for
that rank and hold a key (swell middle C) down. Check the L.E.D.s
on the Demultiplexer/Driver for that rank (if the L.E.D.s are
on, check to be sure the chest plays by keying the output with
organ positive). If the chest plays try "swapping"
(see following section on "Swapping") the Demultiplexer/
Driver with one that is known to work. If the L.E.D.s are not
on, use a test wire connected to the test binding post on the
Chamber Junction and touch the test wire to TP5 (
see Figure 7)
of the suspect Demultiplexer/Driver. If the test light comes
on, data is present and the problem is likely in the modular cable
(Figure 2, #4) going to the unit flute Demultiplexer/Driver (
Figure 2, #4). If the test light does not light, return to the console
and with a test wire connected to the test binding post on the
Keyscan Base System mother board, touch the test wire to data
pin A4 (see Figures 1A-C) on the Console Junction. If the test
light comes on the problem is likely in the main cable.
If the test light does not come
on and the Lighted Path L.E.D.s are lighted on the Coupler/Unit
Register board for the flute, the problem is likely in the wiring
between the Coupler/Unit mother board and the Console Junction.
Example 2: The unit flute rank
plays from the pedal but not the swell (the swell primary does
play). Turn a stop and key on (as in example 1). Check the Lighted
Path Indicator L.E.D.s on the OrgaPlex panel in the console for
the swell unit flute (Coupler/Unit Register board #404606 or All
Pitch board #404666). If the test L.E.D. doesn't light in response
to the Coupler/Unit Register output data, try swapping the Coupler/Unit
Register (or All Pitch) board with a known good one of the same
type.
Troubleshooting for a specific problem
will be covered in the Troubleshooting Guide section.
SWAPPING BOARDS
When swapping boards (trading a
known good board for a suspect board) the organ power and 12 VAC
to the OrgaPlex should be turned off. Damage might result if
a board were plugged in incorrectly when the power is on.
When swapping Demultiplexer/Drivers
it is not necessary to substitute one that has the same number
of notes. A 61 note or 85 note board may be used in place of
a 73 note board (the low note #1 will always be the same).
Also, it is usually easiest to unplug
and shift both the data cables and output cables of adjacent Demultiplexer/Drivers,
when swapping is called for.
SYMPTOM |
| |
|
|
| |
A. One note key of manual is dead on all stops or couplers. | 1. Key contact defective or not making. | Using a test wire connected to TP9 (binding post) on Keyscan mother, trace the multiplex signal path by testing at TPH (see Figures 3 and 4) octave common, then TPG, TPF, TPE and TPD to determine where the signal is lost. |
2. Connector or wiring to contact open. | ||
3. Defective diode on isolation board. | ||
B. One note of a unit rank is dead and not playable from any stops of that rank. | 1. Chest or pipe defective. | Test the chest and junctions by using a test wire from organ positive to "key" the chest. |
2. Output connector or wire not "making". | ||
3. Output driver I.C. UDN2982 defective. | With the organ power off, carefully remove and exchange the suspected I.C. with a known good one from another position. NOTE: Be sure the chest is working before suspecting an I.C. | |
|
| 4. I.C. CD4094 is defective. | |
C. All of the same kind of note is dead (i.e. all "C" keys). | 1. Keyboard junction connector or wiring open. | Using a test wire connected to TP9 (binding post) on Keyscan mother, trace the multiplex signal path by testing at TPD (see Figures 3 and 4) then TPC, TPB and TPA to determine when the signal is lost. |
2. Keyboard Driver assembly #404601 defective. | ||
D. One half of all octaves of keyboards are dead. | 1. Keyboard Driver #404601 has defective IC3 or IC5. | With the organ power off, carefully remove and exchange the suspected I.C. with a known good one from another position. |
E. One entire octave of a keyboard is dead. | 1. Wiring from keyswitch octave common is open. | Using a test wire connected to TP9 (binding post) on Keyscan mother, trace the multiplex signal path by testing at TPH (see Figure 3) then TPI and TPJ to determine where the signal is lost. |
2. Division Encode #404603 defective. | With the organ power off, carefully remove and exchange the suspected board with a known good one. | |
ENTIRE STOPS DEAD | ||
A. One stop of a unit rank or coupler is dead. | 1. Stop contact or wiring. | Using a test wire connected to TP9 ( binding post) on Keyscan mother, check to see if voltage is present at connector on Coupler/Unit Register #404606 (see Figure 1, Detail A). |
2. Coupler/Unit Register board defective. | With organ power off, carefully remove and exchange the suspected Coupler/Unit Register with a known good one. | |
B. All stops of a unit rank are dead. | 1. Chest | Test the chest by using a "hot" wire from organ positive to key the chest. |
|
|
| |
|
|
| |
B. All stops of a unit rank are dead. | 2. Demultiplexer/Driver fuse open. | Visually inspect the fuse and replace if necessary. |
3. Modular Data Cable or junction open. | Using a test wire connected to TP9 (binding post) on Chamber Junction, trace the multiplex signal path by testing at TPQ (see Fig. 1) and TP5 (on Demultiplexer) to determine where the signal is lost. | |
4. Coupler/Unit Register board #404606 is defective. | With organ power off, carefully remove and exchange the suspected Coupler/Unit Register with a known good one. | |
|
| ||
A. One note of a rank ciphers with no stops and no keys depressed. | 1. Chest magnet or a primary stuck. | Unplug the output connector from the rank in question, if the cipher continues the problem is in the chest. |
2. Output driver I.C. UDN2982 is defective or CD4094 I.C. is defective. | With the organ power off, carefully remove and exchange the suspected I.C. with a known good one from another position. | |
B. A single adjacent note "runs". | 1. Short in chest cable wiring. | Unplug the output connector from the Demultiplexer in question and "key" the chest with a wire from the organ positive. If the "run" occurs the problem is in the chest or cable. |
2. Output driver I.C. UDN2982 is defective. | With the organ power off, carefully remove and exchange the suspected I.C. with a known good one. | |
C. Adjacent notes of a rank run. | 1. Logic Power Supply board is defective (#404674). | Output voltage should measure 8.5 to 9.0 Volts. Replace with a known good one. |
2. Demultiplexer/ Driver is defective. | With the organ power off, unplug the data cable from the suspected Demultiplexer/Driver and plug it into an adjacent Demultiplexer. If the run clears the Demultiplexer if defective. | |
|
| ||
A. One stop cannot be turned off. | 1. Stop contact always closed or short in wiring. | Unplug the stop connector from its Coupler/Unit Reg. #404606 (see Figure 1, Detail A). If the problem clears check the contact and wiring. |
2. Problem in combination action (or player). | Unplug the stop (sense) connector from the combination action and/or player to isolate. | |
3. Coupler/Unit Register board (#404606) is defective. | With the organ power off, carefully remove and exchange the suspected Coupler/Unit Register board with a known good one. | |
|
|
| |
|
|
| |
A. Any one or two notes of a rank will play. But, any 3rd (or 4th) note added kills all the notes of that rank. | Demultiplexer/ Driver fuse open. | Visually inspect the fuse (or replace) on the Demultiplexer for the rank in question. |
B. A rank plays one or more octaves of pitch (i.e. 8' stop sounds 4'). | Strobe connected to wrong terminal. | On the strobe select wiring (see Figure 2, Detail B) remove the strobe wire for the rank involved and reconnect to an adjacent strobe (retest before soldering). |
C. L.E.D.s come "on" but do not go off. | Strobe open | Using a test wire connected to TP9 (binding post) test for strobe at power connector of Keyscan or Coupler/Unit mothers, top of Strobe Register #404621 (see Figure 7) or TP4 on Demultplexers. |
D. Notes stutter or intermittently transpose. | 1. Cable too long or picking up interference. | May require additional rectifier feeds to console. Visually inspect to be sure all shields are properly connected. |
2. Regulator Board #404674 defective. | With organ power off, carefully remove and exchange the suspected regulator board with a known good one. | |
3. Demultiplexer/Driver defective. | With organ power off, unplug the data cable from the suspected demultiplexer and plug it into adjacent demultiplexer. If the problem clears, the demultiplexer is defective. | |
The above guide should enable any
organ service man, regardless of his familiarity with electronics,
to repair nearly any trouble in the OrgaPlex System that may develop.
If a problem does arise which the repairman is unable to correct,
the modular construction of PETERSON systems permits the troublesome
part to be isolated by simply unplugging the suspected module
and swapping it with one known to be good. If the problem moves
with the module, that module is defective. If further assistance
is required, call 1(708)388-3311 or toll free from anywhere in
the United States or Canada 1(800)341-3311.
PETERSON ELECTRO-MUSICAL
PRODUCTS, INC.
11601 South Mayfield Avenue
Alsip, Illinois 60803
FILE: D:\WP51\FILES\INS\ORGAPLEX.INS REV. 10/96 © 1994 & 1996P.E.M.P.,I.