94
4.2. Power AMP (AMP 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?
0.47Ω
Is the base resistance of the power
transistor open?
22Ω
Is the trimmer potentiometer between the
base of the power transistor open?
1kΩ
Are the zener diode and diode which
are connected with the base of a power
transistor short-circuited?
MTZJ3.3B
1SS133
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.
Replace the zener diode and the diode.
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
YES
Summary of Contents for AVR-2113CI
Page 9: ...9 434 0 152 5 167 0 54 0 164 5 18 5 288 0 22 5 329 0 344 0 AVR 2113CIE3 2113E2 E1C models ...
Page 48: ...Personal notes Personal notes 48 ...
Page 104: ...104 LEVEL DIAGRAM LEVEL DIAGRAM FRONT ch Ω ...
Page 105: ...105 LEVEL DIAGRAM CENTER ch Ω ...
Page 106: ...106 LEVEL DIAGRAM SUBWOOFER ch ...
Page 107: ...107 LEVEL DIAGRAM SURROUND ch Ω ...
Page 108: ...108 LEVEL DIAGRAM SURR BACK ch Ω ...
Page 173: ...173 AK5358BET HDMI U2403 AK5358BET Pin Function ...
Page 186: ...186 NJM2586AM VIDEO IC5002 ...
Page 187: ...187 2 FL DISPLAY FLD 018BT021GINK FRONT FL4400 PIN CONNECTION q T7 ...
Page 188: ...188 GRID ASSIGNMENT ...
Page 189: ...189 ANODE CONNECTION ...