MIC 3: Adjusts the level of the signal input from the MIC INPUT 3 connector.

MIC 4: Adjusts the level of the signal input from the MIC INPUT 4 connector.

LINE: Adjusts the level of the signals input from the LINE IN connectors.

AV/RGB: Adjusts the level of the signals input from the AV/RGB INPUT audio connectors, as specified by the

JAV/RGB SELECT buttons.

FInput indicators

SIGNAL (signal level) indicators: Light up green when the signal is input from each audio connector.

RF (radio frequency) indicators: Light up green when the level of the RF signal input from each tuner unit is satisfactory.

AF (audio frequency) indicators: Light up yellow when the signal is input from each tuner unit.

GSPEAKER OUTPUT indicators PROTECTION (protection circuit) indicator: Lights

up red when the protection circuit of the internal power amplifier operates.

CLIP (clip) indicators: Light up red when the output level of the internal power amplifier is excessive and the output signal is distorted.

70V LINE (high-impedance speaker connection) indicator: Lights up green when the SPEAKERS CH-3/4 terminals are set to connect high-impedance speakers (70V LINE).

VU (volume unit) meters: Uses 5-segment LEDs to

indicate the signal output level prior to adjustment by the LSPEAKER OUT controls.

Note

When the internal protection circuit operates, the signal output is cut to protect the speakers and the SRP-X500P from being damaged.

•If any of the following conditions arises, turn off the SRP-X500P and eliminate the cause.

−The temperature inside the amplifier exceeds the specified level due to excessive output.

−The impedance of the connected speakers is too low.

−The ventilation holes (located on both sides of the SRP-X500P) are blocked by dust.

−The SPEAKERS terminals are short-circuited.

•When the SRP-X500P does not operate normally after eliminating the cause, turn it off and contact the Sony dealer from whom you purchased it.

HMASTER MUTING indicator

Lights up red when signal output is muted by a command issued from a device connected to the REMOTE PARALLEL or REMOTE RS-232C connector, or by operation of an optional remote commander.

IMASTER control

Adjusts the output level of the assigned channels.

With the SRP-X500P Manager software, you can specify which output channels are controlled by the MASTER control.

The MASTER control is factory-set to control the output from the SPEAKERS CH-1 to 4 terminals and the LINE OUTPUT 1/2 connectors. (Note that the output from the LINE OUTPUT 3/4 terminals cannot be controlled.)

JAV RGB SELECT buttons (A to E)

Press to select a device connected to the AV/RGB INPUT audio/video connectors. The pressed button lights up green.

KLINE AV/RGB input adjustment section TRIM (input reference level adjustment) controls:

Adjust the reference level for the audio signals input from the LINE IN connectors and the AV/RGB INPUT audio connectors. The adjustable range is – 30dBu to 0 dBu.

REF. (reference level) indicators: Light up yellow when the audio signal whose level exceeds the reference level is input to the LINE IN connectors and the AV/ RGB INPUT audio connectors. While the audio signal is input, adjust the TRIM controls so that the REF. indicators light up yellow intermittently.

LSPEAKER OUT controls

Used to attenuate the output level of the internal power amplifier.

Before adjusting the speaker output level, use the TRIM controls to specify the reference level for the audio input signals, then use the MASTER control to adjust the overall level. And then use the SPEAKER OUT controls to adjust output level from the SPEAKERS CH-1/2 terminals and CH-3/4 terminals.

MPROJECTOR PROTOCOL selector

Used to select the protocol corresponding to the model of the projector or display monitor connected to the PROJECTOR CONTROL RS-232C connector or the CONTROL S IN/OUT connectors. (Select position 0 only when setting the projector protocol using the SRP-X500P Manager software.)

The setting becomes effective next time the power is turned on. Thus, change the setting while the SRP-X500P is turned off.

For details on the selector position and projector and display monitor models, see “PROJECTOR CONTROL RS-232C connector” (page 23) and “PROJECTOR CONTROL CONTROL S IN/OUT connectors” (page 24).

10 Location and Function of Parts