13
Appendix
Troubleshooting
If the PK-25A 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-25A 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-25A’s power switch on/off.
◆
The PK-25A’s power is switched on/off in ta
ndem 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.
●
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-
25A (p. 7).
◆
If the PK cable is used to connect the PK-25A 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-25A 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-25A’s EXPRESSION OUT
jack to the VK-8’s EXPRESSION PEDAL jack, or the
PK-25A’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-
25A 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-25A’s EXPRESSION OUT jack to the VK-8’s
EXPRESSION PEDAL jack, or the PK-25A’s
EXPRESSION OUT jack to the VK-8’s CONTROL
PEDAL jack.
●
Cannot assign a function to the foot switch.
◆
When the PK-25A 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-25A’s MIDI
channel to the MIDI channel set for the connected device.
◆
If connecting the PK-25A 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-25A is connected to a VK-88 or VK-8,
set the Octave Shift switch to the “0” position.
Error Messages
In the following situations, the indicator of the rear panel of PK-25A 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 1: MIDI data could not be received correctly.
Action 1: If the indicator continues blinking for an
extended period of time, there is a problem
with the content of the MIDI data.
PK-25A_e 13ページ ２００５年１１月１７日 木曜日 午前１０時２０分