trouBleshootiNg
BeFore coNsideriNg it as a Failure
In case of trouble with this component, first check the following before calling for service. What seems to be a serious malfunction is often due to a simple operation mistake.
If the trouble is not fixed after making the following checks, contact the place of purchase, your nearest Marantz dealer, our customer service center, or our repair service center.
Phenomenon | Causes | Actions | |
| The power cable is disconnected. | Check the power cable connections. | |
|
| Turn the INPUT SELECTOR knob or | |
| The unit is in STANDBY mode. | press the POWER ON button on the | |
Power is not supplied. |
| remote controller. | |
|
| If the STANDBY indicator is flashing, | |
| The protection circuit is activated. | turn the power OFF, then ON again | |
|
| after 1 minute or more. | |
| Speaker connection is incomplete. | Check the speaker cable connection. | |
| Input cord connection is incomplete. | Check the input cable connection. | |
|
|
| |
| The INPUT SELECTOR knob is not set | Set the INPUT SELECTOR knob | |
| correctly. | properly. | |
| The VOLUME knob is set to minimum. | Turn the VOLUME knob to the proper | |
Power is supplied, but no | level. | ||
| |||
|
| ||
sound is heard from the | • The SPEKAERS knob is set to OFF. | Set the SPEAKERS knob properly | |
speaker. | • Setting of the SPEAKERS knob is | according to the SPEAKER terminals | |
| incorrect. | to which the speakers are connected. | |
| Setting of the POWER AMP DIRECT | Set the POWER AMP DIRECT button | |
| button is incorrect. | properly. | |
|
| If the MUTE indicator is lit, press the | |
| The MUTE function is activated. | MUTE button on the remote controller | |
|
| to release the MUTE function. | |
Sound is heard from left or | Speaker connection is incomplete. | Check the speaker connections. | |
|
| ||
Setting of the BALANCE knob is |
| ||
right speakers only. | Set the BALANCE knob properly. | ||
| incorrect. | ||
|
| ||
Left and right channels are | Connection of left and right speaker | Make connections properly. | |
reversed. | cords or input cords is reversed. | ||
| |||
| Grounding connection from the record | Check the connections to the PHONO | |
| player is improper. | GND terminal. | |
Noise occurs during record | Connection to the PHONO jacks is | Check the connection to the PHONO | |
playing. | incorrect. | input jacks. | |
| A TV set or the like placed too close to | Place the TV set or record player in | |
| the record player may affect the sound. | another position. | |
| Speakers are placed too close to the | Place the speakers away from the | |
Howling occurs when sound | record player. | record player as far as possible. | |
volume is increased during | The record player is placed on a rack or | If an insulating pad is not supplied with | |
record playing. | |||
the record player, use an insulating pad | |||
| floor that is easily vibrated. | ||
| available in the market. | ||
|
|
aBout the protectiVe circuit
This unit is equipped with a protective circuit to protect the amplifier circuits and speaker system against damage.
If the protective circuit is activated, the sound is instantly muted.
In this case, either the MUTE indicator flashes, or the STANDBY indicator above the POWER ON/OFF button flashes.
at poWer oN
For about 8 seconds after the power is turned on, the protective circuit is activated muting the sound to give the amplifier circuits time to stabilize. Once the amplifier circuits stabilize, the protective circuit releases and audio is enabled.
iN the eVeNt oF oVercurreNt
The protective circuit is activated if current exceeding a certain level is detected, which can happen if excessive signal flow is input to the amplifier or if the unit is connected to a speaker system of less
than 4Ω impedance. The protective circuit is also activated if a speaker cable shorts.
In these cases, the MUTE indicator flashes, and the volume is automatically reduced. Approximately 15 seconds later the protective circuit is released, therefore the volume needs readjusting to continue normal use.
Moreover,iftheovercurrentcontinues,theamplifier’s power shuts OFF and the STANDBY indicator above the POWER ON/OFF button flashes.
iF eXcessiVe ultra-Bass sigNals are iNput
The protective circuit is also activated if ultra- bass signals that exceed the base signal range settings are input. In this case, the MUTE indicator flashes, and the volume is automatically reduced. Approximately 15 seconds later, the protective circuit is released, therefore the volume needs readjusting to continue normal use. If excessive
ENGLISH
iF the maiN-ampliFier oVerheats
The protective circuit is activated if the temperature of the
If the temperature does not sufficiently lower within a certain amount of time after the protective circuit activation, the power shuts OFF and the STANDBY indicator above the POWER ON/OFF button flashes.
iN the eVeNt oF ampliFier trouBle
The protective circuit is activated and the power is automatically shut OFF if an abnormality is detected in the power circuit. The same happens if the main fuse inside the amplifier blows. In these cases, the STANDBY indicator above the POWER ON/OFF button flashes.
In cases as mentioned above, immediately disconnect the power cord, and contact the place of purchase, your nearest Marantz dealer, our customer service center, or our repair service center.
remote coNtroller adVaNced BasicBasic Names aNd others trouBleshootiNg operatioN coNNectioNs operatioN coNNectioNs FuNctioNs
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