Denon AVR-1913 Service Manual

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
owing.
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

Denon AVR-1913 Specifications

General

Receiver type	-
Audio output channels	7.1 channels
Power output per channel (1KHz@6 Ohm)	125 W
Power output per channel (20-20KHz@8 Ohm)	90 W
HDMI in	6
Audio (L/R) in	5
Composite video in	3
Component video (YPbPr/YCbCr) in	1
Audio formats supported	AAC, FLAC, MP3, WMA
Ethernet LAN	Yes
FM band range	87.5 - 107.9 MHz
Supported radio bands	FM
Internet radio services supported	Pandora, SIRIUS Internet Radio, Spotify, vTuner
Card reader integrated	No
Supported video modes	1080p
Supported graphics resolutions	1920 x 1080 (HD 1080)
Product color	Black
Audio decoders	Dolby Digital Plus, Dolby Pro Logic IIz, Dolby TrueHD, DTS 96/24, DTS Neo:6, DTS-ES (Discrete 6.1), DTS-HD, DTS-HD Master Audio
Volume control	Rotary

Weight and Dimensions

Depth	162 mm
Width	434.3 mm
Height	328.9 mm
Weight	9099 g