Roland PK-7A Manuale Utente

 

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 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.

 

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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

 

• 

 

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).

 

• 

 

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)

 

◆

 

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.

 

●

 

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.

 

●

 

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)

 

●

 

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.

 

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.

Action 1: 

Check the MIDI cable connections.

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.

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