Yamaha P-115B Service Manual page 41

2.■ Starting■Test■mode
1) While pressing keys [C#2], [F2], [G#2] (C#2 major chord) simultaneously, turn on the [ ] (Standby/On) switch.
2) The test mode is started and the A3 sine wave sounds. To stop the sound, press any key.
3.■ Test■Procedure
Test items are listed in Table 1.
Press the corresponding key to select and execute each test. (See Fig. 2)
To enter the test item select mode after completing each test item, press the lowest key or the [DEMO/SONG] button (P-115B/
P-115WH only).
# # # # # # # #
A -1 C 0 D 0 F 0 G 0 A 0 C 1 D
A-1 B-1 C0 D0 E0 F0 G0 A0 B0 C1 D1
1 2
P-115B/P-115WH
3
1
P-45B
3
4.■ Test■result
Each test result is indicated by the sound.
When the test result is OK, the C4 sine wave sounds.
When the test result is NG, the C2 sine wave sounds.
C # 2
# # # # # # # #
1 F 1 G 1 A 1 C 2 D 2 F 2 G 2 A 2
E1 F1 G1 A1 B1 C2 D2 E2 F2 G2 A2 B2
8 9 11
4 5 6 7 12 23
11 12 19
9 34 41
Test No.
G # 2
F2
Fig. 1
# # # # # # # #
C 3 D 3 F 3 G 3 A 3 C 4 D 4 F 4 G
C3 D3 E3 F3 G3 A3 B3 C4 D4 E4 F4 G4
14 18 22 19 20 21
15 16 17 13 10
23 33 38
20
Fig. 2
P-115B/P-115WH/P-45B
# # # # # # # # #
4 A 4 C 5 D 5 F 5 G 5 A 5 C 6 D 6
A4 B4 C5 D5 E5 F5 G5 A5 B5 C6 D6 E6
29
25 26 27 28
60
55
# # #
F 6 G 6 A 6
F6 G6 A6 B6 C7
31
61
41