Denon AVR-1612 Service Manual

57
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?
0.47Ω
Is the base resistance of the power
transistor open?
4.7Ω
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?
ZJ3.3B
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
YES

Denon AVR-1612 Specifications

General

Audio output channels	5.1 channels
Audio A/D Converter (ADC)	24-bit/96kHz
Power output per channel (1KHz@6 Ohm)	120 W
Power output per channel (20-20KHz@8 Ohm)	80 W
HDMI in	4
Composite video in	3
S-Video inputs quantity	1
Speakers connectivity type	-
Ethernet LAN	No
Radio Data System (RDS)	Yes
Preset stations quantity	56
Analog signal format system	NTSC, PAL
Display	LCD
HDMI version	1.4
Product color	Black
Audio decoders	Dolby Digital, Dolby Digital EX, Dolby Digital Plus, Dolby Pro Logic II, Dolby Pro Logic IIx, Dolby Pro Logic IIz, Dolby TrueHD, DTS 96/24, DTS Neo:6, DTS-ES, DTS-HD
Apple docking compatibility	iPod
Graphical user interface (GUI) language	English, French, German
AC input voltage	220-240 V
AC input frequency	50 - 60 Hz
Power consumption (standby)	0.5 W
Storage temperature (T-T)	-10 - 60 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 80 %

Weight and Dimensions

Depth	382 mm
Width	435 mm
Height	162 mm
Weight	9200 g