File name SERVICE MANUAL AVR 1803.pdfFor U.S.A., Canada, Europe, U.K., Asia, China, Hong Kong, Taiwan R.O.C. & Korea model
Hi-Fi Component
SERVICE MANUAL
MODEL
AVR-1803/883
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
X0154 NC 0210
AVR-1803/883
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
80W+80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.) 110W+110W (6 ohms, 1kHz with 0.7% T.H.D.) (U.S.A., Canada, Europe, U.K. Models) 130W+130W (6 ohms, EIAJ *) (Asia Model) Center: 80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.) 110W (6 ohms, 1kHz with 0.7% T.H.D.) (U.S.A., Canada, Europe, U.K. Models) 130W (6 ohms, EIAJ *) (Asia Model) Surround: 80W+80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.) 110W+110W (6 ohms, 1kHz with 0.7% T.H.D.) (U.S.A., Canada, Europe, U.K. Models) 130W+130W (6 ohms, EIAJ *) (Asia Model) Surround Back: 80 W (8 ohms , 20 Hz ~ 20 kHz with 0.08% T.H.D.) 110 W (6 ohms , 1 kHz with 0.7% T.H.D.) 130W (6 ohms, EIAJ *) (Asia Model) Dynamic power: 100 W x 2 ch (8 ohms) 145 W x 2 ch (4 ohms) 170 W x 2 ch (2 ohms) Output terminals: Front, Center, Surround: 6 ~ 16 ohms Surround Back: A or B 6 ~ 16 ohms A+B 12 ~ 16 ohms Input sensitivity / input impedance: 200 mV / 47 kohms Frequency response: 10 Hz ~ 100 kHz: +1, -3 dB (DIRECT mode) S/N: 100 dB (IHF-A weighted) (DIRECT mode) Rated output: Front:
· Phone equalizer (PHONE input REC OUT)
Input sensitivity: RIAA deviation: Signal to noise ratio: Rated output / Maximum output: Distortion factor: 2.5 mV ±1 dB (20 Hz to 20 kHz) 74 dB (A weighting, with 5 mV input) 150 mV / 7 V 0.03% (1 kHz, 3 V)
Video section
· Standard video jacks
Input / output level and impedance: Frequency response: 1 Vp-p, 75 ohms 5 Hz ~ 10 MHz +1, -3 dB Y (brightness) signal 1 Vp-p, 75 ohms C (color) signal 0.286 Vp-p, 75 ohms 5 Hz ~ 10 MHz +1, -3 dB Y (brightness) signal 1 Vp-p, 75 ohms PB/CB (blue) signal 0.7 Vp-p, 75 ohms PR/CR (red) signal 0.7Vp-p, 75 ohms 5 Hz ~ 27 MHz +1, -3 dB
· S -video jacks
Input / output level and impedance: Frequency response:
· Color component video jacks
Input / output level and impedance:
Frequency response:
* EIAJ: It is the standard which JEITA (Japan Electronics & Information Technology Industries Association) enacted.
2
AVR-1803/883
Tuner section
Receiving Range: U.S.A. & Canada Models: Europe & U.K. Models: Asia Model: Usable Sensitivity: 50 dB Quieting Sensitivity: S/N (IHF-A): Total Harmonic Distortion (at 1 kHz): [FM] (note: