Operating Instructions
Page 51
... shutter won't close after removing plug.. • The terminal is selected by pressing the correct function button (see page 28). • Turn the volume down . OVERLOAD blinks in the • There is too high. You can only hear treble • The FRONT speakers are set to small. Other components cannot •...
... shutter won't close after removing plug.. • The terminal is selected by pressing the correct function button (see page 28). • Turn the volume down . OVERLOAD blinks in the • There is too high. You can only hear treble • The FRONT speakers are set to small. Other components cannot •...
Service Manual
Page 52
... and abnormality detection for the fan and thermistor. If an abnormality has been detected, AMUTE is on , RELAY is off, and the "OVERLOAD" display is flashing. ↓ Does the abnormality continue for 5 seconds or more ? ↓ Yes Power is turned off. ↓... the unit is turned off . ↓ No (recovery) The program restarts from the abnormality, the "OVERLOAD" display continues flashing. 52 Detection of abnormalities in DC circuits This detection has priority over the abnormality detection of the Amplifier Line 1. VSX-C300 7.1.2 Protection of the fan and thermistor.
... and abnormality detection for the fan and thermistor. If an abnormality has been detected, AMUTE is on , RELAY is off, and the "OVERLOAD" display is flashing. ↓ Does the abnormality continue for 5 seconds or more ? ↓ Yes Power is turned off. ↓... the unit is turned off . ↓ No (recovery) The program restarts from the abnormality, the "OVERLOAD" display continues flashing. 52 Detection of abnormalities in DC circuits This detection has priority over the abnormality detection of the Amplifier Line 1. VSX-C300 7.1.2 Protection of the fan and thermistor.
Service Manual
Page 55
... Last data Reset Last data Last data Last data ON Overload Control start DC abnormality detection FAN control Control start Control start Timing Chart of Power ON Initial 0 200 400 600 1000 1800 2800 3600 4800 5200 (msec) AC relay (UCOM port) A. VSX-C300 7.1.5 Timing Chart Timing Chart of Power OFF Initial 0 200...
... Last data Reset Last data Last data Last data ON Overload Control start DC abnormality detection FAN control Control start Control start Timing Chart of Power ON Initial 0 200 400 600 1000 1800 2800 3600 4800 5200 (msec) AC relay (UCOM port) A. VSX-C300 7.1.5 Timing Chart Timing Chart of Power OFF Initial 0 200...
Service Manual
Page 57
...Connect to Vdd I Headphone detection signal input I Center speaker detection signal input I Thermal detection signal input I DC abnormal detection of the protection circuit (L: Abnormal detection) I Overload abnormal detection of the protection circuit (L: Abnormal detection) I Destination switch (A/D take-in) I A/D conversion port of key input − Connect to Vss − Reset... open − Connect to Vss − +5V − -30V O NJM2296 control O Data signal for communicate with M62446, TC9163 and PLL Active H H H H L L H H H H H H H H 57 VSX-C300 • Pin Function No.
...Connect to Vdd I Headphone detection signal input I Center speaker detection signal input I Thermal detection signal input I DC abnormal detection of the protection circuit (L: Abnormal detection) I Overload abnormal detection of the protection circuit (L: Abnormal detection) I Destination switch (A/D take-in) I A/D conversion port of key input − Connect to Vss − Reset... open − Connect to Vss − +5V − -30V O NJM2296 control O Data signal for communicate with M62446, TC9163 and PLL Active H H H H L L H H H H H H H H 57 VSX-C300 • Pin Function No.
Service Manual
Page 61
... communication O Clock for CODEC communication O Not used For TC9215 control (SW H: PASSIV, L: POWERRED) O For TC9215 control (SB H: DSP, L: 6CH) O Not used I Overload detection of analog input (A/D) O Not used O DSP INIT reset (control at rising edge of power supply only) I DSP O − GND O DSP reset − 5V − 5V I DSP VSX-C300 61 No.
... communication O Clock for CODEC communication O Not used For TC9215 control (SW H: PASSIV, L: POWERRED) O For TC9215 control (SB H: DSP, L: 6CH) O Not used I Overload detection of analog input (A/D) O Not used O DSP INIT reset (control at rising edge of power supply only) I DSP O − GND O DSP reset − 5V − 5V I DSP VSX-C300 61 No.