Troubleshooting - Yamaha M-2 Owner's Manual

TROUBLESHOOTING
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i Symptom Cause
Een, Ap. sê inan AN GB EE
| Power wiil not turn on although POWER switch is ON. ; Power cord plug is not firmly inserted into AC outlet.
Power does not turn on when power plug is inserted into
AC outlet.
Contact an audio serviceman at your nearest YAMAHA
EE
No sound produced from the right and left speakers, or | | Insufficient connection between control amplifier and Check and confirm connection, or operation.
| either the right, or left speaker, | power amplifier, or between power amplifier and speak- | |
| ers.
|
|
| | a a, : EE ‫ נ ב ו‬‎ geen e aa | ae ‫م‬ ‫ווי‬‎ ০১০৯৭ eg
| |
| BALANCE control of the control amplifier has deviated | Properly re-adjust BALANCE control of control ampli- |
| either to the right, or left side. | fier. |
| M —— MÀ M M m M — M M — ‫ا‬‎ TV RUE SE EYN Em 5 e
| | LEVEL control turned down too much (Turned too far | Turn LEVEL control clockwise. |
| counterclockwise}. | |
Beete EE ant tenn — 1 | || |
Sounds suddenly cease during PLAY. Speaker's protective circuit is working because a DC po- When the potential of the power DN becomes zero, |
| tential more than + 1V has generated at the speaker's | the relay will be actuated, causing the circuit to be |
| output terminal, | connected. N
| | Turn off the POWER switch of the power amplifier, |
| Wait a little while and turn it on again. |
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| baen alit inside the circuit. Contact an audio serviceman at your nearest YAMAHA |
| dealer.
p s NES "— M E M MEMO 100000000102121 0530 TEN el ‫וורו‬ ‫רווי‬ ‫רו‬‎ Y ‫دلل‬‎
| Unnatural reproduced sounds with poor bass and unstable The phases (+ and —} of the power amplifier not match- After matching the phases properly, re-connect. |
| stereo image.
ing those of the speakers.
|
| rrr
[M Eu a EEN SE
| Sufficient volume not obtained when VOLUME control Input LEVEL control is turned counterclockwise. Adjust to proper volume by turning input LEVEL =
| of control amplifier is turned up.
; trol clockwise,
|
i
[prre | | | =
; Loud humming generated during program audition. Insufficient contact af pin plug. Re-insert pin E in firm manner.
H
; HD Sha E ‫בב‬ ‫كت‬‎ SCE SEE PN E ‫ו‬ ‫جل‬‎ Sateen a a AE E E N p PM ২০০ 5
| Earth line of 8 not connected to GND terminal টা, earth line to GND terminal of control দা Vier.
of control amplifier.