Yamaha P-115B, Руководство по обслуживанию

Страница: 44 / 109

44
P-115B/P-115WH/P-45B
P-45B P-115B/P-115WH
Test■item Test■function■and■judgment■criteria
No. Key No. Key
11 F#1 8 F#1 Output level R
check
Measures the signal output level of the signal output from the R channel of each output
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.
12 G#1 9 G#1 Output level L
check
Measures the signal output level of the signal output from the L channel of each output
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.
19 A#1 10 A3 Speaker MUTE
check Checks whether the Speaker Mute of analog signals work properly or not.
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.