Yamaha P-120 Service Manual page 30

P-120/P-120S
42 (42: RAM Check 2
43 (43: Wave ROM Check 2
46 (46: RAM Backup Check
(47: Factory Set
47
FAC
48
Note: 0dBm = 0.775V
30
This test checks all the RAMs.
The 7-seg.LED indicates the test result as follows.
When the result is good: PAS
When the result is no good: nG
This test checks all the Wave ROMs.
The 7-seg.LED indicates the test result as follows.
When the result is good: PAS
When the result is no good: nG
Execute this test once, make sure that the 7-seg.LED indicates "nG" and turn
off the [STANDBY/ON] switch.
Then enter the test program and execute this test again, make sure that the 7-
seg.LED indicates the test result as follows.
When the result is good: PAS
When the result is no good: nG
This program initializes all RAMs and resets to the factory preset.
Exit from the test program and enter the play mode.