Hi-Fi Component
SERVICE MANUAL
MODEL
AVR-1603/683
AV SURROUND RECEIVER
X0152 NC 0209
For U.S.A., Canada, Europe, U.K.,
Australia, Asia, China, Hong Kong,
Taiwan R.O.C. & Korea model
Some illustrations using in this service manual are slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: 03 (3837) 5321
2
AVR-1603/683
SPECIFICATIONS
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.
Audio Section
Power Amplifier
Rated output:
Front:
80W+80W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (U.S.A., & Canada Models)
70W+70W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (Europe, U.K., Australia & Asia)
110W+110W
(6
/ohms, 1kHz with 0.7% T.H.D ) (U.S.A., & Canada Models)
100W+100W
(6
/ohms, 1kHz with 0.7% T.H.D ) (Europe, U.K. & Australia Models)
110W+110W
(6
/ohms, EIAJ ) (Asia Model)
Center:
80W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (U.S.A., & Canada Models)
70W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (Europe, U.K. & Australia & Asia)
110W
(6
/ohms, 1kHz with 0.7% T.H.D ) (U.S.A., & Canada Models)
100W
(6
/ohms, 1kHz with 0.7% T.H.D ) (Europe, U.K. & Australia Models)
110W
(6
/ohms, EIAJ ) (Asia Model)
Surround: 80W+80W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (U.S.A., & Canada Models)
70W+70W
(8
/ohms, 20Hz~20kHz with 0.08% T.H.D ) (Europe, U.K. & Australia & Asia)
110W+110W
(6
/ohms, 1kHz with 0.7% T.H.D ) (U.S.A., & Canada Models)
100W+100W
(6
/ohms, 1kHz with 0.7% T.H.D ) (Europe, U.K. & Australia Models)
110W+110W
(6
/ohms, EIAJ ) (Asia Model)
Output terminals:
Front:
A or B
6 to 16
/ohms
A+B
12 to 16
/ohms
Center/Surround:
6 to 16
/ohms
LINE input - SPEAKER OUT
Input sensitivity/input impedance: 200mV/47k
/kohms
Frequency response:
10Hz~100kHz: +1,
-3dB (TONE DEFEAT ON)
S/N ratio:
98dB (IHF-A weighted)
(TONE DEFEAT ON)
Video Section
Standard video jacks
Input/output level and impedance: 1Vp-p,75
/ohms
Frequency response:
5Hz~10MHz
+1, -3dB
S-video jacks
Input/output level and impedance: Y(brightness)signal
1Vp-p, 75/ohms
C(color)signal
0.286Vp-p, 75/ohms
Frequency response:
5Hz~10MHz:
+1, -3dB
Color component video jacks (U.S.A. & Canada Models)
Input/output level and impedance: Y(brightness)signal
1Vp-p, 75/ohms
PB/CB(blue)signal
0.7Vp-p, 75/ohms
PR/CR(red)signal
0.7Vp-p, 75/ohms
Frequency response:
5Hz~27MHz:
+0, -3dB
Tuner section
Receiving range:
[FM] (note:
µV at 75/ohms, 0dBf =1×10-15W)
[AM]
U.S.A., & Canada Models:
87.50MHz~107.90MHz
520kHz~1710kHz
Europe U.K. & Australia Models:
87.50MHz~108.00MHz
522kHz~1611kHz
Asia Model:
87.50MHz~107.90MHz (0.2MHz steps)
520kHz~1710kHz (10kHz steps)
87.50MHz~108.00MHz (0.05MHz steps)
522kHz~1611kHz (9kHz steps)
Usable sensitivity:
1.0
µV (11.2dBf)
18
µV
50 dB quieting sensitivity:
MONO
1.6
µV (15.3dBf)
STEREO 23
µV (38.5dBf)
S/N ratio:
MONO
80dB (IHF-A weighted)
STEREO 75dB (IHF-A weighted)
Total harmonic distortion:
MONO
0.15% (1kHz)
STEREO 0.3% (1kHz)
3
AVR-1603/683
General
Power supply:
AC120V, 60Hz (U.S.A. & Canada Models)
AC230V, 50Hz (Europe, U.K. & Australia Models)
AC115/230V, 50/60Hz (Asia Model)
Power consumption:
4.0A (USA & Canada model)
210W (Europe, U.K., Australia & Asia models)
Maximum external dimensions:
434 (W)
× 147 (H) × 417 (D) mm (17-3/32 × 5-25/32 × 1-23/64)
Mass:
10.4kg (22 lbs 14.9 oz)
Remote control unit (RC-920)
Batteries:
R6P/AA Type (two batteries)
External dimensions:
55 (W)
× 225 (H) × 34.5 (D) mm (2-11/64 × 8-55/64 × 1-9/64)
Mass:
165g (Approx. 5.8 oz) (including batteries)
* For purposes of improvement, specifications and design are subject to change without notice.
4
AVR-1603/683
DISASSEMBLY
(Follow the procedure below in the reverse order when reassembling)
1. Top Cover
Remove 6 screws 1 and 3 screws 2 , then detach the
Top Cover to the arrow direction.
1
2. Front Panel
(1) Remove 4 screws 3 and 3 screws 4 .
(2) Disconnect 3 connectors and FFC coming from the
Front Panel side.
(3) Disconnect the connector coming from the Trans., and
detach the Front Panel to the arrow direction.
1
2
Top Cover
3
4
Connector
Connector
FFC
Front Panel
6
Rear Panel
6
6
6
5
(U.S.A. & Canada models)
6
3. Rear Panel
(1) Take off the AC cord 5 .
(2) Remove 32 screws 6 (36 pieces for U.S.A. & Canada models).
(3) Detach the Rear Panel to the arrow direction.
4
4
LEVEL DIAGRAMS
8
7
6
5
4
3
2
1
A
B
C
D
E
AVR-1603/683
5
FRONT/CENTER/SURROUND