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For U.S.A., Canada, Europe, U.K.,
Australia, Asia, China, Hong Kong,
Taiwan R.O.C. & Korea model
Hi-Fi Component
SERVICE MANUAL
MODEL AVR-1603/683
AV SURROUND RECEIVER
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
X0152 NC 0209
AVR-1603/683
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: 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: