43
4.2. Power AMP (MAIN UNIT)
No sound is output.
The protector operates.
Is the power transistor open or short-
circuited?
2SB1560/2SD2390
Is the emitter resistance of the power
transistor open?
0.47 Ω
Is the base resistance of the power
transistor open?
4.7 Ω
Is the trimmer potentiometer between the
base of the power transistor open?
1k Ω
Is other transistor trouble?
Is other resistance trouble?
Turn on the power, check that voltage of the section is normal and that idling electric current is
flowing.
Replace the power transistor.
Replace the transistor.
Replace the resistance.
Replace the emitter resistance.
Replace the base resistance.
Replace the trimmer potentiometers.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
YES
Содержание AVR-S510BT
Страница 8: ...Personal notes 8 ...
Страница 31: ...1 6 About the error code No FirmwareFile in USB FirmwareFile in USB for unsupported Model name area 31 ...
Страница 49: ...49 LEVEL DIAGRAM AVR S518BT X520BT X518CI LEVEL1 DIAGRAM ...
Страница 50: ...50 AVR S518BT X520BT X518CI LEVEL2 DIAGRAM ...
Страница 51: ...51 AVR S518BT X520BT X518CI LEVEL3 DIAGRAM ...
Страница 52: ...52 AVR S518BT X520BT X518CI LEVEL4 DIAGRAM ...
Страница 53: ...53 AUDIO BLOCK DIAGRAM AVR S518BT X520BT X518CI ANALOG AUDIO DIAGRAM ...
Страница 54: ...54 DIGITAL AUDIO HDMI BLOCK DIAGRAM AVR S518BT X520BT X518CI DIGITAL AUDIO HDMI BLOCK X520BT X518CI ...
Страница 55: ...55 VIDEO BLOCK DIAGRAM AVR S518BT X520BT X518CI VIDEO BLOCK ...
Страница 56: ...56 POWER BLOCK DIAGRAM AVR S518BT X520BT X518CI VCC DIAGRAM ...
Страница 89: ...89 CS497024CVZ DIGITAL IC741 ...
Страница 92: ...92 CS42528 CQ DIGITAL IC744 CS42528 Block diagram ...
Страница 93: ...93 CS42528 Terminal Functions ...
Страница 95: ...95 NJU72340A DIGITAL IC761 NJU72340A Terminal Functions ...
Страница 102: ...102 MX25L1606EM2I 12G USB IC904 MX25L1606EM2I 12G Terminal Functions BD82065FVJ USB IC905 ...
Страница 104: ...104 2 FL DISPLAY FLD 018BT021GINK FRONT FL101 PIN CONNECTION GRID ASSIGNMENT ...
Страница 105: ...105 ANODE CONNECTION ...