Pioneer VSX-521-K Service Manual

40
VSX-821-K
1
2 3 4
A
B
C
D
E
F
1
2 3 4
Step 0: Preliminary confirmation
Confirm the following items before checking
To Step 1
Do screws of USB Assy
securely tighten?
Ye s
[4] iPod TROUBLESHOOTING
Tighten screws securely.
No
OK
Step 1: Power supply
CN801 (pins1, 2)
IC806 (pin 2)
Is the voltage 12 V?
Is the voltage 5 V output?
Is pin 6 (en) of IC806 high?
Is the voltage of 5V input?
Is the voltage 3.3 V output?
Is the voltage of 12 V input?
Ye s
Ye s
Check the wire between USB and
MAIN Assys.
No
12 V input
12 V input
IC806 (pins 7, 8)
Ye s
REG2 (pin 3)
Ye s
Check the IC806 and its peripheral
circuits.
No
No
Is REG2 abnomally hot?
No No
(to chassis)
(to chassis)
REG2 (pin 2)
Ye s
Ye s
Ye s
3.3 V output
Check the pattern in the path.
No
The output and GND may be
short-circuited. Check the path
between them.
Check the IC806 and its peripheral
circuits. (CP803 pin 5)
No
Check the MAIN Assy.
OK
Replace IC806.
OK
Replace IC806.
Replace REG2.
D

Pioneer VSX-521-K Specifications

General

Impedance	8 Ω
Receiver type	-
Frequency range	20 - 20000 Hz
RMS rated power	550 W
Audio output channels	5.1 channels
Signal-to-Noise Ratio (SNR)	79 dB
Total Harmonic Distortion (THD)	0.05 %
Power output per channel (1KHz@6 Ohm)	125 W
Power output per channel (20-20KHz@8 Ohm)	- W
AirPlay	No
Product color	Black
Audio decoders	Dolby Digital EX, Dolby Digital Plus, Dolby Pro Logic IIz, Dolby TrueHD, DTS-HD
Apple docking compatibility	Not supported
HDMI in	4
Digital audio coaxial in	1
Digital audio optical in	2
Multichannel audio input type	Terminals
Headphone connectivity	3.5 mm
Connectivity technology	Wired
AM band range	530 - 1700 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Preset stations quantity	30
AC input voltage	120 V
AC input frequency	60 Hz
Power consumption (standby)	0.4 W
Power consumption (typical)	415 W

Weight and Dimensions

Depth	363 mm
Width	435 mm
Height	168 mm
Weight	9000 g