Roland Electronic Keyboard PK 7A User Guide

Owner’s Manual  
Thank you, and congratulations on your choice of the Roland PK-7A Pedal Keyboard.  
In addition to the pedal keyboard, which greatly enhances enjoyment in playing the  
organ, the PK-7A MIDI pedal keyboard unit also features an expression pedal that  
lends precise and dynamic volume expression to performances, a foot switch that en-  
ables pedal control over a variety of Roland VK-88/VK-8 combo organ functions, and  
a hold pedal for sustaining notes.  
Before using this unit,  
carefully read the sections  
entitled: “USING THE UNIT  
SAFELY” (p. 2, 3) and  
“Important Notes” (p. 4).  
These sections provide  
important information  
concerning the proper  
operation of the unit.  
Features  
Additionally, in order to feel  
assured that you have gained  
a good grasp of every feature  
provided by your new unit,  
this Owner’s Manual should  
be read in its entirety. The  
manual should be saved and  
kept on hand as a convenient  
reference.  
Twenty-note pedal keyboard and removable expression pedal  
The PK-7A features a twenty-note pedal keyboard for maximum enjoyment of organ  
playing. The built-in expression pedal can be removed from the pedal keyboard unit  
to make the unit more compact for transportation.  
Foot switches for controlling the VK-88/VK-8  
Two foot switches are built into the expression pedal. When the PK-7A is connected to  
a Roland VK-88 or VK-8 combo organ, you can then switch settings of the Roland VK-  
88 or VK-8 as you perform without removing your foot from the expression pedal or  
your hands from the keyboard.  
Hold pedal  
A hold pedal is located where it can be easily operated by your right foot, for  
additional expressive possibilities when playing sustain-type sounds.  
Single-cable connection to the VK-88  
When connecting the PK-7A to the VK-88, the PK cable is the only connection  
required–no need for MIDI cables, analog cables, or an AC adaptor. This makes setup  
quick and easy.  
Switching MIDI Channels and Octave Shift  
The PK-7A also features a MIDI channel switching knob that allows you to match the  
MIDI channel settings with other equipment when the PK-7A is connected to an  
external MIDI device other than a Roland combo organ (VK Series). Furthermore, you  
can use Octave Shift to change the pitch in octave increments.  
Conventions used in this manual  
Pages in this manual where you can find additional information are indicated like this: (p. **).  
04230167  
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Copyright © 2005 ROLAND CORPORATION  
All rights reserved. No part of this publication may be reproduced in any form without the writ-  
ten permission of ROLAND CORPORATION.  
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103b  
012cImmediately turn the power off, remove the AC  
At regular intervals, you should unplug the AC  
adaptor from the outlet, and request servicing by  
your retailer, the nearest Roland Service Center,  
or an authorized Roland distributor, as listed on  
the “Information” page when:  
adaptor and clean it by using a dry cloth to wipe  
all dust and other accumulations away from its  
prongs. Also, disconnect the power plug from the  
power outlet whenever the unit is to remain  
unused for an extended period of time. Any  
accumulation of dust between the power plug  
and the power outlet can result in poor insulation  
and lead to fire.  
• The AC adaptor or the power-supply cord has  
been damaged; or  
• If smoke or unusual odor occurs  
• Objects have fallen into, or liquid has been  
spilled onto the unit; or  
..........................................................................................................  
104 Try to prevent cords and cables from becoming  
entangled. Also, all cords and cables should be  
placed so they are out of the reach of children.  
..........................................................................................................  
106 Never climb on top of, nor place heavy objects on  
• The unit has been exposed to rain (or otherwise  
has become wet); or  
• The unit does not appear to operate normally  
or exhibits a marked change in performance.  
..........................................................................................................  
013 In households with small children, an adult  
the unit.  
..........................................................................................................  
should provide supervision until the child is  
capable of following all the rules essential for the  
safe operation of the unit.  
107d  
Never handle the AC adaptor body, or its output  
plugs, with wet hands when plugging into, or  
unplugging from, an outlet or this unit.  
..........................................................................................................  
014 Protect the unit from strong impact.  
..........................................................................................................  
108b  
(Do not drop it!)  
Before moving the unit, disconnect the AC  
adaptor and all cords coming from external  
devices.  
..........................................................................................................  
015 Do not force the unit’s power-supply cord to  
..........................................................................................................  
109b  
share an outlet with an unreasonable number of  
other devices. Be especially careful when using  
extension cords—the total power used by all  
devices you have connected to the extension  
cord’s outlet must never exceed the power rating  
(watts/amperes) for the extension cord. Excessive  
loads can cause the insulation on the cord to heat  
up and eventually melt through.  
Before cleaning the unit, turn off the power and  
unplug the AC adaptor from the outlet (p. 7).  
..........................................................................................................  
110b  
Whenever you suspect the possibility of lightning  
in your area, disconnect the AC adaptor from the  
outlet.  
..........................................................................................................  
118cKeep any knob bolt you may remove and the  
..........................................................................................................  
016 Before using the unit in a foreign country, consult  
included knob bolts in a safe place out of  
children’s reach, so there is no chance of them  
being swallowed accidentally.  
with your retailer, the nearest Roland Service  
Center, or an authorized Roland distributor, as  
listed on the “Information” page.  
..........................................................................................................  
101b  
The unit and the AC adaptor should be located so  
their location or position does not interfere with  
their proper ventilation.  
..........................................................................................................  
102d  
Always grasp only the output plug or the body of  
the AC adaptor when plugging into, or  
unplugging from, this unit or an outlet.  
..........................................................................................................  
3
 
Important Notes  
In addition to the items listed under “USING THE UNIT SAFELY” on page 2 and 3, please read and observe the following:  
Power Supply  
Maintenance  
301  
401a  
• Do not connect this unit to same electrical outlet that is  
• For everyday cleaning wipe the unit with a soft, dry cloth  
being used by an electrical appliance that is controlled by  
an inverter (such as a refrigerator, washing machine,  
microwave oven, or air conditioner), or that contains a  
motor. Depending on the way in which the electrical  
appliance is used, power supply noise may cause this unit  
to malfunction. If it is not practical to use a separate  
electrical outlet, connect a power supply noise filter  
between this unit and the electrical outlet.  
or one that has been slightly dampened with water. To  
remove stubborn dirt, use a cloth impregnated with a  
mild, non-abrasive detergent. Afterwards, be sure to wipe  
the unit thoroughly with a soft, dry cloth.  
402  
• Never use benzine, thinners, alcohol or solvents of any  
kind, to avoid the possibility of discoloration and/or  
deformation.  
302  
• The AC adaptor will begin to generate heat after long  
Additional Precautions  
• Use a reasonable amount of care when using the unit’s  
hours of consecutive use. This is normal, and is not a  
cause for concern.  
553  
307  
• Before connecting this unit to other devices, turn off the  
buttons, sliders, or other controls; and when using its jacks  
and connectors. Rough handling can lead to malfunctions.  
power to all units. This will help prevent malfunctions  
and/or damage to speakers or other devices.  
556  
• When connecting / disconnecting all cables, grasp the  
connector itself—never pull on the cable. This way you  
will avoid causing shorts, or damage to the cable’s  
internal elements.  
Placement  
• This device may interfere with radio and television  
352a  
558b  
• To avoid disturbing your neighbors, try to keep the unit’s  
reception. Do not use this device in the vicinity of such  
receivers.  
volume at reasonable levels (especially when it is late at  
night).  
352b  
559a  
• Noise may be produced if wireless communications  
• When you need to transport the unit, package it in the box  
devices, such as cell phones, are operated in the vicinity of  
this unit. Such noise could occur when receiving or initi-  
ating a call, or while conversing. Should you experience  
such problems, you should relocate such wireless devices  
so they are at a greater distance from this unit, or switch  
them off.  
(including padding) that it came in, if possible. Otherwise,  
you will need to use equivalent packaging materials.  
355b  
• When moved from one location to another where the  
temperature and/or humidity is very different, water  
droplets (condensation) may form inside the unit. Damage  
or malfunction may result if you attempt to use the unit in  
this condition. Therefore, before using the unit, you must  
allow it to stand for several hours, until the condensation  
has completely evaporated.  
358  
• Do not allow objects to remain on top of the keyboard or  
pedal board. This can be the cause of malfunction, such as  
keys ceasing to produce sound.  
360  
• Depending on the material and temperature of the surface  
on which you place the unit, its rubber feet may discolor  
or mar the surface.  
You can place a piece of felt or cloth under the rubber feet  
to prevent this from happening. If you do so, please make  
sure that the unit will not slip or move accidentally.  
4
 
 
Index  
Setting the MIDI Channel....................................................................12  
Changing the Pitch (Octave Shift)......................................................12  
Error Messages.............................................................................................13  
Specifications.....................................................................................................14  
MIDI Implementation......................................................................................15  
MIDI Implementation Chart...........................................................................16  
5
 
Names and Functions  
Rear Panel  
11 12 13  
7
5 6  
9
8
10  
Cord Hook  
3
2
4
1
1.  
2.  
Pedal Keyboard  
The PK-7A features a 20-note pedal keyboard that is ideal for organ performance.  
Expression Pedal  
Advancing the pedal will increase the volume, and returning the pedal toward yourself  
will decrease the volume. For instructions on connecting it, refer to page 8.  
3.  
Foot Switches  
Two foot switches are built on the sides of the expression pedal.  
You can control the connected devices by pressing the foot switch.  
For more information on the foot switch functions when the PK-7A is connected to a VK-88 or  
VK-8, refer to “Connecting to the VK-88” (p. 9) or “Connecting to the VK-8” (p. 10).  
MEMO  
4.  
Hold Pedal  
Pressing down on the Hold pedal holds (sustains) the sound from the connected device.  
For more information on the Hold pedal function when the PK-7A is connected to a VK-88 or  
VK-8, refer to “Connecting to the VK-88” (p. 9) or “Connecting to the VK-8” (p. 10).  
MEMO  
5.  
POWER Switch  
This turns the power of the PK-7A on/off.  
If the PK cable is used to connect the PK-7A to the VK-88, the PK-7A will turn on/off in tandem  
with the VK-88. The power switch of the PK-7A need not be switched on/off.  
MEMO  
6
 
 
6.  
7.  
DC IN Jack  
Connect the supplied AC adaptor to this jack.  
To prevent the inadvertent disruption of power to  
your unit (should the plug be pulled out acciden-  
tally), and to avoid applying undue stress to the  
cord hook, as shown in the illustration.  
Cord Hook  
The cord of the supplied  
AC Adaptor  
To the Power Outlet  
OCT SHIFT (Octave Shift) Switch  
When the PK-7A is connected to an external MIDI device other than a VK-88 or VK-8,  
this switch allows you to transpose the pitch in octave units to match that of the connect-  
ed device (p. 12).  
8.  
9.  
MIDI CH (MIDI Channel Switching) Knob  
This knob allows you to match the MIDI channel settings with other equipment when  
the PK-7A is connected to an external MIDI device other than a VK-88 or VK-8 (p. 12).  
PK OUT Connector  
Use the PK cable that is supplied with the VK-88 to connect this connector to the VK-88.  
After connecting to the VK-88, make sure to set the PEDAL KEYBOARD [SELECT]  
switch on the VK-88’s rear panel to PK IN (VK-88 Owner’s Manual, p. 22).  
Do not attempt to use any cable other than the PK cable, since this will cause malfunctions. This connector  
cannot be used with the VK-8.  
NOTE  
10. MIDI Connectors  
Connect a VK-8 or external MIDI device here.  
Use a MIDI cable (sold separately) to make the connections.  
11. HOLD OUT (Hold Pedal output) Jack  
This jack outputs the on/off data from the hold pedal.  
Use a monaural cable (phone-phone) (sold separately) to make the connections.  
If a cable is connected to this jack, Hold data will not be sent from the PK OUT connector or the MIDI  
OUT connector.  
NOTE  
12. EXPRESSION OUT (Expression pedal output) Jack  
This jack outputs the data from the expression pedal.  
Use a stereo cable (phone-phone) (sold separately) to make the connections.  
The expression pedal is designed only for Roland/Boss products. Connecting it to products made by  
manufacturers other than Roland or Boss may cause malfunctions.  
NOTE  
If a cable is connected to this jack, Expression data will not be output from the PK OUT connector or  
MIDI OUT connector.  
NOTE  
13. FOOT SW-L OUT/FOOT SW-R OUT (Foot switch L output /Foot switch  
R output) Jacks  
These jacks output on/off data from the foot switches.  
Use a monaural cable (phone-phone) (sold separately) to make the connections.  
If a cable is connected to these jacks, on/off data from the foot switches will not be output from the PK OUT  
connector or the MIDI OUT connector.  
NOTE  
7
 
 
Connections  
Attaching the Expression Pedal  
The PK-7A is shipped with the expression pedal detached. Before connecting the PK-7A  
to another device, please attach the expression pedal.  
When attaching or detaching the expression pedal, be careful not to step on a knob bolt. When removing  
the knob bolts, place them out of the reach of children. If a knob bolt is accidentally swallowed, consult a  
doctor immediately.  
NOTE  
To prevent malfunction and/or damage to speakers or other devices, always turn down the volume, and  
turn off the power on all devices before making any connections.  
1.Loosen the knob bolt on the rear panel 2.Connect the expression pedal cable to  
of the PK-7A.  
the connector in the upper part of the  
PK-7A.  
Knob bolt of the  
rear panel  
4.Use the two supplied knob bolts to  
fasten the expression pedal, making  
sure that the bolt holes are aligned.  
Retighten the knob bolt of the rear panel.  
3.While being careful not to pinch the  
cable, place the expression pedal on  
the PK-7A.  
Supplied Knob bolts (two places)  
Knob bolt of the  
rear panel  
The connector in the upper part of the PK-7A is only for connecting the supplied expression pedal.  
Connecting this to any device other than the PK-7A’s own expression pedal could result in malfunction.  
NOTE  
8
 
   
Connecting to the VK-88  
Use the PK cable that is supplied with the VK-88 to connect the VK-88 and PK-7A.  
The supplied AC adaptor is not used. The PK-7A will be turned on/off by the power switch of  
the VK-88, regardless of the position of the PK-7A’s own power switch.  
MEMO  
PK IN Jack  
PK cable that is supplied  
with the VK-88  
PK OUT Jack  
* The VK-88 includes a PK cable that is longer than  
the PK cable supplied with the PK-7A. If you are  
connecting the PK-7A to a VK-88, we recommend  
using the PK cable that is supplied with the VK-88.  
1.  
2.  
Make sure that the VK-88’s power is turned off.  
Set the PEDAL KEYBOARD [SELECT] switch (located on the rear panel  
of the VK-88) to the PK IN position.  
3.  
Use the PK cable that is supplied with the VK-88 to connect the VK-  
88’s PK IN connector to the PK-7A’s PK OUT connector.  
Once the connections have been completed, turn on power to your various devices in the order specified. By  
turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other  
devices.  
NOTE  
4.  
As explained on the VK-88 Owner’s Manual, turn on the power of the  
VK-88.  
5.  
6.  
Make sure that the indicator on the rear panel of the PK-7A is lit.  
Play the pedal keyboard. If you hear the pedal part of the VK-88,  
connections are complete.  
This unit is equipped with a protection circuit. A brief interval (a few seconds) after power up is required  
before the unit will operate normally.  
NOTE  
If connecting the PK-7A to a VK-88, set the OCT SHIFT (Octave Shift) switch to the “0” position.  
MEMO  
9
 
 
You can select the part that will be sustained when you press the Hold pedal.  
MEMO  
MEMO  
HOLD PEDAL ASSIGN (VK-88 Owner’s Manual, p. 80)  
A variety of functions can be assigned to each foot switch (L/R).  
PK FOOT L ASSIGN (VK-88 Owner’s Manual, p. 68)  
PK FOOT R ASSIGN (VK-88 Owner’s Manual, p. 68)  
Connecting to the VK-8  
Use a MIDI cable to connect the VK-8 and PK-7A.  
MIDI PEDAL IN Connector  
MIDI Cable  
MIDI OUT Connector  
1.  
2.  
Make sure that the power of the VK-8 and PK-7A is turned off.  
Use a MIDI cable to connect the VK-8’s MIDI PEDAL IN connector to the  
PK-7A’s MIDI OUT connector.  
3.  
Connect the appropriate end of the AC adaptor to the DC IN jack. Then  
connect the other end to a standard AC outlet.  
Once the connections have been completed, turn on power to your various devices in the order specified. By  
turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other  
devices.  
NOTE  
4.  
Turn on the power of the PK-7A, and make sure that the indicator on  
the PK-7A’s rear panel is lit.  
5.  
As described in the VK-8 Owner’s Manual, turn on the power of the VK-  
8.  
6.  
Make sure that the Sub-Keyboard Function is on (VK-8 Owner’s  
Manual p. 58).  
10  
 
 
7.  
Play the pedal keyboard. If the pedal part is heard from the VK-8,  
connections are complete.  
This unit is equipped with a protection circuit. A brief interval (a few seconds) after power up is required  
before the unit will operate normally.  
NOTE  
Once you have made connections as described above, you can use the switches and pedals to  
control the following functions.  
Expression pedal:  
Foot switch L:  
Foot switch R:  
Hold pedal:  
Control the volume of all parts of the Organ, and the Other Tones.  
Switch the rotary effect between slow/fast.  
Turn the rotary effect brake on/off.  
Hold (sustain) the sound of the Organ voice and Other Tones.  
If connecting the PK-7A to a VK-8, set the OCT SHIFT (Octave Shift) switch to the “0” position.  
MEMO  
MEMO  
When the PK-7A’s FOOT SW-L OUT/FOOT SW-R OUT/HOLD OUT jack is connected to the  
VK-8’s CONTROL PEDAL jack, you can assign a variety of functions to the foot switch. Use a  
mono cable (phone-phone) to make connections.  
Assigning a Function to the Control Pedal (VK-8 Owner’s Manual, p. 40)  
When the PK-7A’s EXPRESSION OUT jack is connected to the VK-8’s EXPRESSION PEDAL jack,  
you can use the expression pedal to simultaneously control the volume of all parts of the Organ  
and the Other Tones. Use a stereo cable (phone-phone) to make connections.  
Using the Expression Pedal (VK-8 Owner’s Manual, p. 39)  
MEMO  
MEMO  
When the PK-7A’s HOLD OUT jack is connected to the VK-8’s HOLD PEDAL jack, you can play  
can sustain the sound by pressing the pedal. Use a monaural cable (phone-phone) to make  
connections.  
Using the Hold Pedal to Sustain the Sound (VK-8 Owner’s Manual, p. 42)  
The PK-7A provides a “MIDI Merge” feature, which allows you to have the MIDI messages  
received at MIDI IN be combined with the MIDI messages produced by playing the PK-7A itself.  
The resulting merged data stream is then transmitted from the MIDI OUT connector.  
MEMO  
NOTE  
Turn off the power of the PK-7A after turning off the power of VK-8.  
Connecting to External MIDI Devices Other than  
the VK-88/VK-8  
Use a MIDI cable to connect external MIDI devices to the PK-7A.  
The PK-7A provides a “MIDI Merge” feature, which allows you to have the MIDI messages  
received at MIDI IN be combined with the MIDI messages produced by playing the PK-7A itself.  
The resulting merged data stream is then transmitted from the MIDI OUT connector.  
MEMO  
1.  
Make sure that the power of the external device and PK-7A is turned  
off.  
2.  
Use a MIDI cable to connect the external device’s MIDI IN connector to  
the PK-7A’s MIDI OUT connector.  
If necessary, connect the FOOT SW-L OUT, FOOT SW-R OUT, and/or HOLD OUT jacks to the  
corresponding connectors on the external MIDI device.  
MEMO  
11  
 
 
Once the connections have been completed, turn on power to your various devices in the order specified. By  
turning on devices in the wrong order, you risk causing malfunction and/or damage to speakers and other  
devices.  
NOTE  
3.  
Turn on the power of the PK-7A, and make sure that the indicator on  
the PK-7A’s rear panel is lit.  
4.  
Turn on the power to the external MIDI device according to the  
instructions in the owner’s manual for the device.  
5.  
Set the PK-7A’s MIDI channel.  
“Setting the MIDI Channel” (Next section)  
6.  
Set the MIDI channel on the external MIDI device to match the channel  
set for the PK-7A.  
7.  
Play the pedal keyboard. If the pedal part is heard from the VK-8,  
connections are complete.  
Turn off the power of the PK-7A after turning off the power of the external MIDI device.  
NOTE  
Setting the MIDI Channel  
When connecting the PK-7A to external MIDI devices other than the VK-88 or VK-8, set  
the PK-7A’s MIDI channel and the MIDI channel on the external MIDI device to the same  
channel.  
1.  
Turn the MIDI CH (MIDI Channel Switching) knob on the PK-7A’s rear  
panel to switch the MIDI channel.  
Setting the MIDI channel is unnecessary when the PK-7A is connected to a VK-88 or VK-8.  
MEMO  
Changing the Pitch (Octave Shift)  
You can change the pitch in octave increments, allowing you to match the pitch to that  
of the connected device.  
1.  
Switch the Octave Shift setting with the OCT SHIFT (Octave Shift)  
switch on the PK-7A’s rear panel.  
Set the switch to the “+1” position to raise the pitch one octave or to the “-1” position to  
lower the pitch one octave.  
If connecting the PK-7A to a VK-88 or VK-8, set the OCT SHIFT (Octave Shift) switch to the “0”  
position.  
MEMO  
12  
 
     
Appendix  
Troubleshooting  
If the PK-7A does not function as you expect, please check the following points first. If this does not resolve the  
problem, contact your dealer or a nearby Roland service center.  
The power (indicator) does not come on when I turn on the  
power switch.  
If MIDI and analog cables are used to connect the PK-  
7A to the VK-8  
Make sure that the polarity of the VK-8’s CONTROL  
PEDAL jack is set to “Standard.” (VK-8 Owner’s  
Manual, p. 56)  
Make sure that a function is assigned to the VK-8’s  
CONTROL PEDAL jack. (VK-8 Owner’s Manual, p.  
40–41)  
Use a stereo cable (phone-phone) when connecting  
the PK-7A’s EXPRESSION OUT jack to the VK-8’s  
EXPRESSION PEDAL jack, or the PK-7A’s  
EXPRESSION OUT jack to the VK-8’s CONTROL  
PEDAL jack.  
If the PK-7A is connected to a device that cannot use the  
PK cable (such as the VK-8), the supplied AC adaptor  
must be used. After connecting the AC adaptor  
correctly, turn the power switch on.  
The power (indicator) does not turn on/off when I turn the  
PK-7A’s power switch on/off.  
The PK-7A’s power is switched on/off in tandem with  
the VK-88 when it is connected to the VK-88 using the  
PK cable that is supplied with the VK-88. Make sure  
that the VK-88’s power is turned on and the PK cable is  
connected correctly.  
Cannot assign a function to the foot switch.  
When the PK-7A is connected to the VK-8 without  
using analog cables, functions other than Rotary Slow/  
Fast (foot pedal L) and Rotary Brake (foot pedal R)  
cannot be assigned.  
The foot switch, hold pedal, and/or expression pedal do  
not operate correctly.  
Make sure that the expression pedal cable is correctly  
connected to the connector on the upper part of the PK-  
7A (p. 7).  
If the PK cable is used to connect the PK-7A to the VK-  
88  
No sound plays.  
When connecting to any external MIDI device other  
than the VK-88 or VK-8, you must match the PK-7A’s  
MIDI channel to the MIDI channel set for the connected  
device.  
If connecting the PK-7A to a VK-8, switch the Sub-  
Keyboard Function to ON. (VK-8 Owner’s Manual,  
p. 56)  
Make sure that the cable is connected correctly (p. 7).  
Check the settings of the switches or pedals.  
Foot switch: VK-88 Owner’s Manual, p. 68 (PK  
FOOT L ASSIGN/PK FOOT R ASSIGN)  
Hold pedal: VK-88 Owner’s Manual, p. 80 (HOLD  
PEDAL ASSIGN)  
Expression pedal: VK-88 Owner’s Manual,  
p. 82 (ORCHESTRAL TONES EXPRESSION)  
If a MIDI cable is used to connect the PK-7A to the VK-8  
Check that the MIDI cable is connected correctly (p.  
8).  
Sounds are not playing correctly.  
Confirm whether or not the Octave Shift switch is set  
correctly. If the PK-7A is connected to a VK-88 or VK-8,  
set the Octave Shift switch to the “0” position.  
If you wish to use the expression pedal to control the  
volume of the Other Tones, use a stereo cable  
(phone-phone) to connect the PK-7A’s EXPRESSION  
OUT jack to the VK-8’s EXPRESSION PEDAL jack,  
or the PK-7A’s EXPRESSION OUT jack to the VK-8’s  
CONTROL PEDAL jack. (VK-8 Owner’s Manual, p.  
40–41)  
Error Messages  
In the following situations, the indicator of the rear panel of PK-7A will blink for several seconds.  
Situation 1: It is possible that the MIDI cable has been  
disconnected or is damaged.  
Situation 2: MIDI data could not be received correctly.  
Action 2:  
If the indicator continues blinking for an  
extended period of time, there is a problem  
with the content of the MIDI data.  
Action 1:  
Check the MIDI cable connections.  
13  
 
   
Specifications  
Pedalboard:  
20 keys  
• Control:  
Expression Pedal  
Foot Switch (L, R)  
Damper (Hold) Switch  
MIDI CH (MIDI Channel Switching) Knob  
OCT SHIFT (Octave Shift) Switch  
Power Switch  
• Connectors:  
PK OUT Jack  
MIDI Connectors (IN, OUT)  
HOLD OUT Jack  
EXPRESSION OUT Jack  
FOOT SW-R OUT Jack  
FOOT SW-L OUT Jack  
DC IN Jack  
• Power:  
DC 9 V: AC adaptor, or supplied from VK-88 via PK cable  
• Current Draw: 100 mA (DC 9 V)  
• Dimensions:  
905 (W) x 490 (D) x 271 (H) mm  
35-11/16 (W) x 19-5/16 (D) x 10-11/16 (H) inches  
• Weight:  
15.7 kg / 34 lbs 10 oz  
• Accessories:  
Owner’s Manual  
AC Adaptor  
PK cable  
• Options:  
MIDI Cable, Analog Cable (Stereo, Monaural)  
*
In the interest of product improvement, the specifications and/or appearance of this unit are  
subject to change without prior notice.  
14  
 
 
MIDI Implementation  
Model: PK-7A (MIDI Pedal Keyboard)  
Date: Oct. 20, 2005  
System Realtime Message  
Version: 1.00  
Active sensing  
Status  
1. Recognized Receive Data  
System Realtime Messages  
Status  
FEH  
FEH  
*
This will be transmitted constantly at intervals of approximately 250 ms.  
System Exclusive Messages  
*
By receiving an Active Sensing message, this unit enters the mode timing the interval  
between incoming MIDI messages. If the interval exceeds 500 ms, this unit transmits  
Note Off messages corresponding to the transmitted notes being On, and returns from  
this mode.  
“Data Set 1 (DT1)” to control VK-8/7 is the only System Exclusive messages transmitted by  
PK-7A.  
Data Set1 DT1  
Status  
Data byte  
Status  
F7H  
2. Transmitted Data  
Channel Voice Messages  
Note off  
F0H  
41H, 10H, 00H, 08H, 12H, aaH,  
bbH, ccH, ddH, eeH, sum  
Byte  
F0H  
41H  
10H  
00H  
08H  
12H  
aaH  
bbH  
ccH  
ddH  
eeH  
sum  
F7H  
Remarks  
Status  
2nd byte  
3rd byte  
Exclusive status  
ID number (Roland)  
device ID  
8nH  
kkH  
40H  
n =MIDI channel:  
kk =note number:  
0H - FH (ch.1 - 16)  
18H - 43H (24 - 67)  
model ID  
model ID (VK-7)  
command ID (DT1)  
address MSB: The most significant byte of the address  
Note on  
Status  
address  
2nd byte  
kkH  
3rd byte  
78H  
address  
9nH  
address LSB: The least significant byte of the address  
data: The actual data to be transmitted.  
checksum  
n =MIDI channel:  
kk =note number:  
0H - FH (ch.1 - 16)  
18H - 43H (24 - 67)  
EOX (End Of Exclusive)  
Control Change  
Expression (Controller number 11)  
*
This unit sends the following messages to control ROTARY SOUND of the VK-8/7.  
Status  
BnH  
2nd byte  
0BH  
3rd byte  
vvH  
F0 41 10 00 08 12 02 00 10 3D ... F7  
(Rotary Speed: Transmit by FOOT SW-L)  
n =MIDI channel:  
vv =expression:  
0H - FH (ch.1 - 16)  
00H - 7FH (0 - 127)  
F0 41 10 00 08 12 02 00 10 3E ... F7  
(Rotary Rotation: Transmit by FOOT SW-R)  
*
If the EXPRESSION OUT jack on the rear panel is in use, this unit doesn’t send  
Expression message via MIDI.  
General Purpose Controller 3 (Controller number 18)  
Status  
BnH  
2nd byte  
12H  
3rd byte  
vvH  
n =MIDI channel:  
0H - FH (ch.1 - 16)  
vv =control value: 00H, 7FH (0, 127)  
*
*
This message will be sent by operating a foot switch locating left side of the expression  
pedal.  
If a FOOT SW-L OUT jack on the rear panel is in use, the unit doesn’t send this message  
via MIDI.  
General Purpose Controller 4 (Controller number 19)  
Status  
BnH  
2nd byte  
13H  
3rd byte  
vvH  
n =MIDI channel:  
0H - FH (ch.1 - 16)  
vv =control value: 00H, 7FH (0, 127)  
*
*
This message will be sent by operating a foot switch locating right side of the expression  
pedal.  
If a FOOT SW-R OUT jack on the rear panel is in use, the unit doesn’t send this message  
via MIDI.  
Hold 1 (Controller number 64)  
Status  
BnH  
2nd byte  
40H  
3rd byte  
vvH  
n =MIDI channel:  
0H - FH (ch.1 - 16)  
vv =control value: 00H, 7FH (0, 127)  
*
If a HOLD OUT jack on the rear panel is in use, the unit doesn’t send Hold 1 message via  
MIDI.  
15  
 
 
MIDI Implementation Chart  
MIDI FOOTPEDAL  
Date : Oct. 20, 2005  
Version : 1.00  
Model PK-7A  
MIDI Implementation Chart  
Transmitted  
Recognized  
Remarks  
Function…  
x
x
Basic  
Channel  
Default  
Changed  
1 – 16  
1 – 16  
Default  
Messages  
Altered  
Mode 3  
x
****************  
x
x
Mode  
x
x
24 – 67  
****************  
Note  
Number :  
True Voice  
Note ON  
Note OFF  
O (9n, v=120)  
O (8n, v=64)  
x
x
Velocity  
After  
Touch  
Key’s  
Ch’s  
x
x
x
x
Pitch Bend  
x
x
11  
18  
19  
64  
O
O
O
O
x
x
x
Expression  
General Purpose 3  
General Purpose 4  
Hold 1  
x
Control  
Change  
Prog  
Change  
x
x
x
: True #  
****************  
System Exclusive  
O
*1  
x
SongPos  
SongSel  
Tune  
x
x
x
x
x
x
System  
Common  
System  
Real Time  
Clock  
Commands  
x
x
x
x
All Sound OFF  
Reset All Controllers x  
x
x
x
Aux  
Message  
Local ON/OFF  
All Notes OFF  
Active Sensing  
Reset  
x
x
O
x
x
x
O
x
*1 For controlling Rotary Sound of the VK-8/7  
Notes  
Mode 1 : OMNI ON, POLY  
Mode 2 : OMNI ON, MONO  
O : Yes  
x : No  
Mode 3 : OMNI OFF, POLY Mode 4 : OMNI OFF, MONO  
16  
 
 
Information  
When you need repair service, call your nearest Roland Service Center or authorized Roland  
distributor in your country as shown below.  
PHILIPPINES  
COSTA RICA  
TRINIDAD  
NORWAY  
JORDAN  
AFRICA  
G.A. Yupangco & Co. Inc.  
339 Gil J. Puyat Avenue  
Makati, Metro Manila 1200,  
PHILIPPINES  
JUAN Bansbach Instrumentos  
AMR Ltd  
Roland Scandinavia Avd.  
MUSIC HOUSE CO. LTD.  
Ground Floor  
Musicales  
Kontor Norge  
FREDDY FOR MUSIC  
P. O. Box 922846  
Amman 11192 JORDAN  
TEL: (06) 5692696  
EGYPT  
Al Fanny Trading Office  
9, EBN Hagar A1 Askalany  
Street,  
ARD E1 Golf, Heliopolis,  
Cairo 11341, EGYPT  
TEL: 20-2-417-1828  
Maritime Plaza  
Barataria Trinidad W.I.  
TEL: (868) 638 6385  
Ave.1. Calle 11, Apartado 10237,  
San Jose, COSTA RICA  
TEL: 258-0211  
Lilleakerveien 2 Postboks 95  
Lilleaker N-0216 Oslo  
NORWAY  
TEL: (02) 899 9801  
TEL: 2273 0074  
SINGAPORE  
SWEE LEE MUSIC  
COMPANY PTE. LTD.  
150 Sims Drive,  
SINGAPORE 387381  
TEL: 6846-3676  
URUGUAY  
Todo Musica S.A.  
Francisco Acuna de Figueroa  
1771  
C.P.: 11.800  
Montevideo, URUGUAY  
TEL: (02) 924-2335  
CURACAO  
Zeelandia Music Center Inc.  
Orionweg 30  
Curacao, Netherland Antilles  
TEL:(305)5926866  
KUWAIT  
EASA HUSAIN AL-YOUSIFI  
& SONS CO.  
Abdullah Salem Street,  
Safat, KUWAIT  
TEL: 243-6399  
POLAND  
MX MUSIC SP.Z.O.O.  
UL. Gibraltarska 4.  
PL-03664 Warszawa POLAND  
TEL: (022) 679 44 19  
REUNION  
Maison FO - YAM Marcel  
25 Rue Jules Hermann,  
Chaudron - BP79 97 491  
Ste Clotilde Cedex,  
DOMINICAN REPUBLIC  
Instrumentos Fernando Giraldez  
Calle Proyecto Central No.3  
Ens.La Esperilla  
Santo Domingo,  
Dominican Republic  
TEL:(809) 683 0305  
TAIWAN  
ROLAND TAIWAN  
ENTERPRISE CO., LTD.  
Room 5, 9fl. No. 112 Chung  
Shan N.Road Sec.2, Taipei,  
TAIWAN, R.O.C.  
PORTUGAL  
Roland Iberia, S.L.  
Portugal Office  
Cais das Pedras, 8/9-1 Dto  
4050-465, Porto, PORTUGAL  
TEL: 22 608 00 60  
LEBANON  
Chahine S.A.L.  
Gerge Zeidan St., Chahine  
Bldg., Achrafieh, P.O.Box: 16-  
5857  
Beirut, LEBANON  
TEL: (01) 20-1441  
VENEZUELA  
Instrumentos Musicales  
Allegro,C.A.  
Av.las industrias edf.Guitar  
REUNION ISLAND  
TEL: (0262) 218-429  
SOUTH AFRICA  
That Other Music Shop(PTY)Ltd.  
11 Melle St., Braamfontein,  
Johannesbourg,  
SOUTH AFRICA  
TEL: (011) 403 4105  
import  
#7 zona Industrial de Turumo  
Caracas, Venezuela  
TEL: (212) 244-1122  
TEL: (02) 2561 3339  
ROMANIA  
FBS LINES  
Piata Libertatii 1,  
535500 Gheorgheni,  
ROMANIA  
ECUADOR  
Mas Musika  
Rumichaca 822 y Zaruma  
Guayaquil - Ecuador  
THAILAND  
OMAN  
Theera Music Co. , Ltd.  
330 Soi Verng NakornKasem,  
New Road, Sumpantawongse,  
Bangkok 10100, THAILAND  
TEL: (02) 224-8821  
TALENTZ CENTRE L.L.C.  
Malatan House No.1  
Al Noor Street, Ruwi  
SULTANATE OF OMAN  
TEL: 2478 3443  
FAX: (011) 403 1234  
EUROPE  
TEL:(593-4)2302364  
TEL: (266) 364 609  
Paul Bothner(PTY)Ltd.  
Royal Cape Park, Unit 24  
Londonderry Road, Ottery 7800  
Cape Town, SOUTH AFRICA  
TEL: (021) 799 4900  
EL SALVADOR  
OMNI MUSIC  
75 Avenida Norte y Final  
Alameda Juan Pablo II,  
Edificio No.4010 San Salvador,  
EL SALVADOR  
AUSTRIA  
Roland Elektronische  
Musikinstrumente HmbH.  
RUSSIA  
MuTek  
Dorozhnaya ul.3,korp.6  
117 545 Moscow, RUSSIA  
TEL: (095) 981-4967  
VIETNAM  
SAIGON MUSIC  
DISTRIBUTOR  
(TAN DINH MUSIC)  
138 Tran Quang Khai Street  
Dist. 1, Ho Chi Minh City  
VIETNAM  
QATAR  
Al Emadi Co. (Badie Studio &  
Stores)  
P.O. Box 62, Doha, QATAR  
Austrian Office  
Eduard-Bodem-Gasse 8,  
A-6020 Innsbruck, AUSTRIA  
TEL: (0512) 26 44 260  
TEL: 262-0788  
TEL: 4423-554  
SPAIN  
ASIA  
Roland Iberia, S.L.  
Paseo García Faria, 33-35  
08005 Barcelona SPAIN  
TEL: 93 493 91 00  
GUATEMALA  
SAUDI ARABIA  
aDawliah Universal  
Electronics APL  
Corniche Road, Aldossary  
Bldg., 1st Floor, Alkhobar,  
SAUDI ARABIA  
BELGIUM/FRANCE/  
HOLLAND/  
LUXEMBOURG  
Roland Central Europe N.V.  
Houtstraat 3, B-2260, Oevel  
(Westerlo) BELGIUM  
CHINA  
Roland Shanghai Electronics  
Co.,Ltd.  
5F. No.1500 Pingliang Road  
Shanghai 200090, CHINA  
TEL: (021) 5580-0800  
Casa Instrumental  
Calzada Roosevelt 34-01,zona 11  
Ciudad de Guatemala  
Guatemala  
TEL: (08) 848-4068  
SWEDEN  
Roland Scandinavia A/S  
SWEDISH SALES OFFICE  
Danvik Center 28, 2 tr.  
S-131 30 Nacka SWEDEN  
TEL: (0)8 702 00 20  
TEL:(502) 599-2888  
AUSTRALIA/  
NEW ZEALAND  
AUSTRALIA/  
NEW ZEALAND  
Roland Corporation  
Australia Pty.,Ltd.  
38 Campbell Avenue  
Dee Why West. NSW 2099  
AUSTRALIA  
HONDURAS  
Almacen Pajaro Azul S.A. de C.V.  
BO.Paz Barahona  
3 Ave.11 Calle S.O  
San Pedro Sula, Honduras  
TEL: (504) 553-2029  
P.O.Box 2154, Alkhobar 31952  
SAUDI ARABIA  
TEL: (03) 898 2081  
TEL: (014) 575811  
Roland Shanghai Electronics  
Co.,Ltd.  
(BEIJING OFFICE)  
10F. No.18 3 Section Anhuaxili  
Chaoyang District Beijing  
100011 CHINA  
CZECH REP.  
K-AUDIO  
Kardasovska 626.  
CZ-198 00 Praha 9,  
CZECH REP.  
SYRIA  
Technical Light & Sound  
Center  
Rawda, Abdul Qader Jazairi St.  
Bldg. No. 21, P.O.BOX 13520,  
Damascus, SYRIA  
SWITZERLAND  
Roland (Switzerland) AG  
Landstrasse 5, Postfach,  
CH-4452 Itingen,  
SWITZERLAND  
TEL: (061) 927-8383  
MARTINIQUE  
Musique & Son  
Z.I.Les Mangle  
97232 Le Lamantin  
Martinique F.W.I.  
TEL: 596 596 426860  
TEL: (2) 666 10529  
TEL: (010) 6426-5050  
DENMARK  
Roland Shanghai Electronics  
Co.,Ltd.  
(GUANGZHOU OFFICE)  
2/F., No.30 Si You Nan Er Jie  
Yi Xiang, Wu Yang Xin Cheng,  
Guangzhou 510600, CHINA  
TEL: (020) 8736-0428  
Roland Scandinavia A/S  
Nordhavnsvej 7, Postbox 880,  
DK-2100 Copenhagen  
DENMARK  
TEL: (011) 223-5384  
For Australia  
UKRAINE  
TIC-TAC  
Mira Str. 19/108  
P.O. Box 180  
295400 Munkachevo,  
UKRAINE  
TEL: (03131) 414-40  
Tel: (02) 9982 8266  
For New Zealand  
Tel: (09) 3098 715  
TURKEY  
ZUHAL DIS TICARET A.S.  
Galip Dede Cad. No.37  
Beyoglu - Istanbul / TURKEY  
TEL: (0212) 249 85 10  
Gigamusic SARL  
10 Rte De La Folie  
97200 Fort De France  
Martinique F.W.I.  
TEL: 596 596 715222  
TEL: 3916 6200  
FINLAND  
Roland Scandinavia As, Filial  
Finland  
Elannontie 5  
FIN-01510 Vantaa, FINLAND  
TEL: (0)9 68 24 020  
CENTRAL/LATIN  
AMERICA  
HONG KONG  
Tom Lee Music Co., Ltd.  
Service Division  
22-32 Pun Shan Street, Tsuen  
Wan, New Territories,  
HONG KONG  
U.A.E.  
Zak Electronics & Musical  
Instruments Co. L.L.C.  
Zabeel Road, Al Sherooq Bldg.,  
No. 14, Grand Floor, Dubai,  
U.A.E.  
UNITED KINGDOM  
MEXICO  
Roland (U.K.) Ltd.  
Atlantic Close, Swansea  
Enterprise Park, SWANSEA  
SA7 9FJ,  
Casa Veerkamp, s.a. de c.v.  
Av. Toluca No. 323, Col. Olivar  
de los Padres 01780 Mexico  
D.F. MEXICO  
ARGENTINA  
Instrumentos Musicales S.A.  
Av.Santa Fe 2055  
(1123) Buenos Aires  
ARGENTINA  
TEL: (011) 4508-2700  
GERMANY  
Roland Elektronische  
Musikinstrumente HmbH.  
Oststrasse 96, 22844  
Norderstedt, GERMANY  
TEL: (040) 52 60090  
TEL: 2415 0911  
TEL: (04) 3360715  
UNITED KINGDOM  
TEL: (01792) 702701  
TEL: (55) 5668-6699  
Parsons Music Ltd.  
NICARAGUA  
Bansbach Instrumentos  
Musicales Nicaragua  
Altamira D'Este Calle Principal  
de la Farmacia 5ta.Avenida  
1 Cuadra al Lago.#503  
Managua, Nicaragua  
8th Floor, Railway Plaza, 39  
Chatham Road South, T.S.T,  
Kowloon, HONG KONG  
TEL: 2333 1863  
BARBADOS  
NORTH AMERICA  
A&B Music Supplies LTD  
12 Webster Industrial Park  
Wildey, St.Michael, Barbados  
TEL: (246)430-1100  
MIDDLE EAST  
GREECE  
STOLLAS S.A.  
Music Sound Light  
155, New National Road  
Patras 26442, GREECE  
TEL: 2610 435400  
CANADA  
Roland Canada Music Ltd.  
(Head Office)  
5480 Parkwood Way  
Richmond B. C., V6V 2M4  
CANADA  
INDIA  
Rivera Digitec (India) Pvt. Ltd.  
409, Nirman Kendra  
Mahalaxmi Flats Compound  
Off. Dr. Edwin Moses Road,  
Mumbai-400011, INDIA  
TEL: (022) 2493 9051  
BAHRAIN  
Moon Stores  
No.16, Bab Al Bahrain Avenue,  
P.O.Box 247, Manama 304,  
State of BAHRAIN  
BRAZIL  
Roland Brasil Ltda.  
Rua San Jose, 780 Sala B  
Parque Industrial San Jose  
Cotia - Sao Paulo - SP, BRAZIL  
TEL: (011) 4615 5666  
TEL: (505)277-2557  
PANAMA  
TEL: (604) 270 6626  
SUPRO MUNDIAL, S.A.  
Boulevard Andrews, Albrook,  
Panama City, REP. DE  
PANAMA  
TEL: 17 211 005  
HUNGARY  
Roland East Europe Ltd.  
Warehouse Area ‘DEPO’ Pf.83  
H-2046 Torokbalint,  
HUNGARY  
CYPRUS  
Radex Sound Equipment Ltd.  
17, Diagorou Street, Nicosia,  
CYPRUS  
Roland Canada Music Ltd.  
(Toronto Office)  
170 Admiral Boulevard  
Mississauga On L5T 2N6  
CANADA  
INDONESIA  
PT Citra IntiRama  
J1. Cideng Timur No. 15J-150  
Jakarta Pusat  
INDONESIA  
TEL: (021) 6324170  
CHILE  
Comercial Fancy II S.A.  
Rut.: 96.919.420-1  
Nataniel Cox #739, 4th Floor  
Santiago - Centro, CHILE  
TEL: (02) 688-9540  
TEL: 315-0101  
TEL: (23) 511011  
PARAGUAY  
Distribuidora De  
Instrumentos Musicales  
J.E. Olear y ESQ. Manduvira  
Asuncion PARAGUAY  
TEL: (595) 21 492147  
TEL: (022) 66-9426  
TEL: (905) 362 9707  
IRELAND  
Roland Ireland  
G2 Calmount Park, Calmount  
Avenue, Dublin 12  
Republic of IRELAND  
TEL: (01) 4294444  
IRAN  
MOCO INC.  
No.41 Nike St., Dr.Shariyati Ave.,  
Roberoye Cerahe Mirdamad  
Tehran, IRAN  
U. S. A.  
KOREA  
Roland Corporation U.S.  
5100 S. Eastern Avenue  
Los Angeles, CA 90040-2938,  
U. S. A.  
Cosmos Corporation  
1461-9, Seocho-Dong,  
Seocho Ku, Seoul, KOREA  
TEL: (02) 3486-8855  
COLOMBIA  
Centro Musical Ltda.  
Cra 43 B No 25 A 41 Bododega 9  
Medellin, Colombia  
PERU  
Audionet  
Distribuciones Musicales SAC  
Juan Fanning 530  
Miraflores  
TEL: (021) 285-4169  
TEL: (323) 890 3700  
ITALY  
Roland Italy S. p. A.  
Viale delle Industrie 8,  
20020 Arese, Milano, ITALY  
TEL: (02) 937-78300  
ISRAEL  
Halilit P. Greenspoon & Sons  
Ltd.  
8 Retzif Ha'aliya Hashnya St.  
Tel-Aviv-Yafo ISRAEL  
TEL: (03) 6823666  
TEL: (574)3812529  
MALAYSIA  
Roland Asia Pacific Sdn. Bhd.  
45-1, Block C2, Jalan PJU 1/39,  
Dataran Prima, 47301 Petaling  
Jaya, Selangor, MALAYSIA  
TEL: (03) 7805-3263  
Lima - Peru  
TEL: (511) 4461388  
As of December 10, 2005 (ROLAND)  
17  
 
For EU Countries  
For the USA  
This product complies with the requirements of European Directive 89/336/EEC.  
FEDERAL COMMUNICATIONS COMMISSION  
RADIO FREQUENCY INTERFERENCE STATEMENT  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the  
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential  
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in  
accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee  
that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or  
television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the  
interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and  
(2) This device must accept any interference received, including interference that may cause undesired operation.  
Unauthorized changes or modification to this system can void the users authority to operate this equipment.  
This equipment requires shielded interface cables in order to meet FCC class B Limit.  
For Canada  
NOTICE  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
AVIS  
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.  
18  
 

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