2
AVR-550SD
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.
(1)
(2)
500V
1M
(1)
(2)
Summary of Contents for AVR-550SD
Page 3: ...3 AVR 550SD LEVEL DIAGRAM...
Page 4: ...4 AVR 550SD...
Page 5: ...5 AVR 550SD BLOCK DIAGRAM...
Page 11: ...11 AVR 550SD Functions...
Page 18: ...18 AVR 550SD CXP7400P10 MAIN IC401 Block Diagram...
Page 20: ...20 AVR 550SD LC74781 VIDEO IC609...
Page 23: ...23 AVR 550SD 2 FL DISPLAY 15 ST 43GN PIN CONNECTION GRID ASSINMENT 46 45 90 1...
Page 24: ...24 AVR 550SD ANODE CONNECTION...
Page 25: ...25 AVR 550SD PRINTED WIRING BOARDS MAIN P W B UNIT COMPONENT SIDE...
Page 26: ...26 AVR 550SD FOIL SIDE...
Page 27: ...27 AVR 550SD VIDEO P W B UNIT COMPONENT SIDE...
Page 28: ...28 AVR 550SD FOIL SIDE...
Page 29: ...29 AVR 550SD FRONT P W B UNIT COMPONENT SIDE...
Page 30: ...30 AVR 550SD FRONT P W B UNIT FRONT P W B UNIT FRONT P W B UNIT FOIL SIDE FOIL SIDE...
Page 31: ...31 AVR 550SD SMPS P W B UNIT...
Page 60: ...60 AVR 550SD LEVEL DIAGRAM...
