Yamaha P-115B Service Manual page 44

P-115B/P-115WH/P-45B
P-45B P-115B/P-115WH
No. Key No. Key
11 F#1 8 F#1
12 G#1 9 G#1 Output level L
19 A#1 10 A3
44
Test■item
Output level R Measures the signal output level of the signal output from the R channel of each output
check terminal.
1) Connect the level meter to the output terminal to be measured.
2) Set the MASTER VOLUME slider to the maximum position.
3) Press the [F#1] key, and C5 sine wave sound is produced.
4) Measure the output level and confirm that the measured values are within the speci-
fied range.
P-115B/P-115WH
PHONES L: -50.0 dBu or less, PHONES R: -3.0 dBu±2 dB
AUX OUT L: -68.0 dBu or less, AUX OUT R: -5.0 dBu±2 dB
P-45B
PHONES L: -65.0 dBu or less, PHONES R: -8.5 dBu±2 dB
5) Press the lowest key to exit the TEST item, and sound production is stopped.
Measures the signal output level of the signal output from the L channel of each output
check terminal.
1) Connect the level meter to the output terminal to be measured.
2) Set the MASTER VOLUME slider to the maximum position.
3) Press the [G#1] key, and C5 sine wave sound is produced.
4) Measure the output level and confirm that the measured values are within the speci-
fied range.
P-115B/P-115WH
PHONES L: -3 dBu ± 2 dB, PHONES R: -50.0 dBu or less
AUX OUT L: -5.0 dBu ± 2 dB, AUX OUT R: -68.0 dBu or less
P-45B
PHONES L: -8.5 dBu ± 2 dB, PHONES R: -65.0 dBu or less
5) Press the lowest key to exit the TEST item, and sound production is stopped.
Speaker MUTE Checks whether the Speaker Mute of analog signals work properly or not.
check
P-115B/P-115WH
1) Press the [A3] key, and C5 sine wave sound is produced from L and R channels at
the same level.
2) Press the [TEMPO UP] button, and the speaker outputs are muted.
3) Press the [TEMP DOWN] button, and the speaker outputs are not muted.
4) Press the lowest key to exit the TEST item, and sound production is stopped.
Caution■:
While this test is executed, connection/disconnection of the headphone is not de-
tected. (Sound comes out of the speaker even if the headphone is connected.)
P-45B
1) Press the [A#1] key, and C5 sine wave sound is produced from L and R channels at
the same level.
2) Press the [highest key (C7)] of the keyboard, and the speaker outputs are muted.
3) Press the [highest key-1 (B6)] of the keyboard, and the speaker outputs are not
muted.
4) Press the lowest key to exit the TEST item, and sound production is stopped.
Test■function■and■judgment■criteria