Denon AVC-a11SR (AVR-4802) Service Manual eng.pdf

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For U.S.A., Canada, Europe,
Asia, China, Hong Kong,
Korea & Taiwan R.O.C. model
Hi-Fi Component
SERVICE MANUAL
MODEL AVR-4802
MODEL AVC-A11SR
AV SURROUND RECEIVER / AMPLIFIER
For AVR-4802 For AVC-A11SR
Some illustrations using in this service manual are slightly different from the actual set.
14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011 JAPAN
Telephone: 03 (3584) 8111
X0120 1174 NC 0108
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AVR-4802/AVC-A11SR
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
SPECIFICATIONS
Audio Section
Power amplifier:
Rated output:
Stereo (2 ch driven)
(All properties shown are only for the
125 W + 125 W (8 Ω /ohms, 20 Hz ~ 20 kHz with 0.05 % T.H.D.)
Ω
/ohms, 20 Hz ~ 20 kHz with 0.05 % T.H.D.)
Dynamic power:
170 W × 2 ch (8 Ω /ohms)
270 W
/ohms)
350 W × 2 ch (2 Ω /ohms)
×
2 ch (4
Ω
Output terminals:
Front/Center:
6 ~ 16
Ω
/ohms
Surround:
A or B
6 ~ 16 Ω /ohms
A + B
8 ~ 16
Ω
/ohms
Analog:
Input sensitivity/input impedance:
Frequency response:
200 mV/47 k Ω /kohms
−
3 dB (DIRECT mode)
S/N:
105 dB (DIRECT mode)
Distortion:
0.005 % (20 Hz ~ 20 kHz) (DIRECT mode)
Rated output/maximum output:
1.2 V/8 V
Digital:
D/A output:
2 V (at 0 dB playback)
Total harmonic distortion 0.005 % (1 kHz, at 0 dB)
S/N ratio
110 dB
Dynamic range 108 dB
Digital input:
Format
Digital audio interface
Phono equalizer (PHONO input
REC OUT):
Input sensitivity:
2.5 mV
RIAA deviation:
±
1 dB (20 Hz to 20 kHz)
Signal-to-noise ratio:
74 dB (A weighting, with 5 mV input)
Rated output/Maximum output:
150 mV/8V
Distortion factor:
0.03 % (1 kHz, 3 V)
Video Section
Standard video jacks
Input/output level and impedance:
1 Vp-p, 75 Ω /ohms
+0,
−
3 dB
S-video jacks
Input/output level and impedance:
Y (brightness) signal 1 Vp-p, 75 Ω /ohms
C (color) signal
0.286 Vp-p, 75
Ω
/ohms
Frequency response:
5 Hz ~ 10 MHz +0, − 3 dB
Color component video terminal:
Input/output level and impedance:
/ohms
P B /C B (blue) signal 0.7 Vp-p, 75 Ω /ohms
P R /C R (red) signal
1 Vp-p, 75
Ω
0.7 Vp-p, 75
Ω
/ohms
Frequency response:
DC ~ 50 MHz +0, − 3 dB
Tuner Section
[FM] (note: µ V at 75 Ω /ohms, 0 dBf = 1 × 10 -15 W)
[AM]
Receiving range:
87.5 MHz ~ 107.9 MHz
520 kHz ~ 1710 kHz
Usable sensitivity:
1.0 µ V (11.2 dBf)
18 µ V
50 dB Quieting sensitivity:
MONO 1.6 µ V (15.3 dBf)
STEREO 23 µ V (38.5 dBf)
Signal to Noise Ratio (IHF-A):
MONO 77 dB
50 dB
STEREO 72 dB
Total Harmonic Distortion (at 1 kHz):
MONO 0.15 %
STEREO 0.3 %
Genera Power supply:
AC 120 V, 60 Hz (U.S.A., Canada & Taiwan R.O.C. model)
AC 230 V, 50 Hz (Europe & Asia model)
AC 220 V, 50 Hz (China model)
Power consumption:
10.5 A (U.S.A., & Canada model)
Maximum external dimensions:
434 (W)
×
179 (H)
×
485 (D) mm (17-3/32
″
×
7-3/64
″
×
19-3/32
″
)
Mass:
20.5 kg (45 lbs 3.1 oz)
Remote Control Unit (RC-8000): AVR Model only
Batteries:
LR6/AA Type (four batteries)
×
38 (H)
×
168.5 (D) mm (3-25/32
″
×
1-1/2
″
×
6-41/64
″
)
Mass:
242 g (Approx. 8.5 oz) (not including batteries)
Remote Control Unit (RC-899): AVC Model only
Batteries:
R6P/AA Type (three batteries)
External dimensions:
61 (W)
×
230 (H)
×
34 (D) mm (2-13/32
″
×
9-1/16
″
×
1-11/32
″
)
Mass: 150 g (Approx. 5.3 oz) (not including batteries)
* For purposes of improvement, specifications and design are subject to change without notice.
2
power amplifer stage.)
150 W + 150 W (6
10 Hz ~ 100 kHz: +0,
Rated output
Frequency response:
5 Hz ~ 10 MHz
Y (brightness) signal
External dimensions:
96 (W)
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AVR-4802/AVC-A11SR
CAUTION IN SERVICING
When you have replaced the 1U-3291 Unit, or changed the CPU, DSP, or their peripheral parts, be sure to perform “RESET”
by pressing S803 on the DSP Unit Ass’y in the state of Standby or Power-on.
WIRE ARRANGEMENT
If wire bundles are untied or moved to perform adjustment or parts replacement etc.,be sure to rearrange them neatly as they
were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noise generation.
Wire arrangement viewed from the top
Front Panel side
Back Panel side
3
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AVR-4802/AVC-A11SR
Wire arrangement viewed from the bottom
Front Panel side
Back Panel side
4
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AVR-4802/AVC-A11SR
DISASSEMBLY
(Follow the procedure below in reverse order when reassembling)
Top Cover
(1) Remove 9 screws 1 on both sides and on the top.
(2) Remove 4 screws 2 on the rear and detach the Top
Cover by sliding to the arrow direction.
Top Cover
1
2
1
2
1
1
Front Panel
(1) Remove 11 screws 3 and detach the Bottom Cover.
(2) Remove the screw 4 , 7 screws 5 .
(3) Disconnect FFC wire from its connector, and detach
the Front Panel in the arrow direction.
5
3
5
4
Front Panel
FFC Wire
5
5
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