Yamaha TG500 Owner's Manual page 206

DRUM VOICE EDIT MODE / 5: Recall/Init.
[PLAY/MODE] -> PFM PLAY -> [EDIT/COMPARE] -> 5: Recall/Init. -> [ENTER] -> [PAGE]
-> 5-2: Initialize ->[ENTER]
editing an existing voice, use this function to initialize all parameters.
you want.
display will appear:
(which will erase all current edited data), or press [-1/NO] to cancel.
been initialized.
194
5-2: INITIALIZE
5-2: INITIALIZE
When you want to program a totally new drum voice "from scratch," rather than
DRM Initialize
Type= 1
Use the [-1/NO] and [+1/YES] keys to select the type of initial drum voice data
Type= 1: SY/RY format (same as SY-series synthesizers and RY-series rhythm
programmers).
Type= 2: Zone (Related instruments grouped in "zones").
Type= 3: GM format (Modified General MIDI System Level 1 format).
Type= 4: Standard format with emphasized effects.
Press [ENTER] to begin the initialize procedure. The following confirmation
DRM Initialize Sure?
Type= 1
Press [+1/YES] to confirm that you want to go ahead with the initialize operation
"Completed!" will appear briefly on the display when the performance data has