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Hi-Fi Component
SERVICE MANUAL
MODEL AVC-A1D
MODEL AVR-5700
AV SURROUND AMPLIFIER / RECEIVER
-- TABLE OF CONTENTS --
SAFETY PRECAUTIONS ...................................................................................................................................................... 2
SPECIFICATIONS ................................................................................................................................................................. 2
WIRE ARRANGEMENT ........................................................................................................................................................ 3
DISASSEMBLY ................................................................................................................................................................ 4~7
LEVEL DIAGRAMS ............................................................................................................................................................ 8,9
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK .................................................................................................... 10,11
ADJUSTMENT .............................................................................................................................................................. 12~14
SEMICONDUCTORS ................................................................................................................................................... 15~39
PRINTED WIRING BOARDS ....................................................................................................................................... 40~47
NOTE FOR PARTS LIST ..................................................................................................................................................... 48
PARTS LIST OF P.W.B. UNIT ASS'Y .......................................................................................................................... 48~70
ADDENDUM PARTS LIST OF P.W.B. UNIT ASS'Y .................................................................................................... 71~75
EXPLODED VIEW ............................................................................................................................................................... 76
PARTS LIST OF EXPLODED VIEW ................................................................................................................................... 77
ADDENDUM PARTS LIST OF EXPLODED VIEW ............................................................................................................. 78
BLOCK DIAGRAM ............................................................................................................................................................... 79
WIRING DIAGRAM .............................................................................................................................................................. 80
SCHEMATIC DIAGRAMS ............................................................................................................................................ 81~97
q Some illustrations using in this service manual are slightly different from the actual set.
AVC-A1D/AVR-5700
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: 140 W + 140 W (8 /ohms, 20 Hz ~ 20 kHz with 0.05 % T.H.D.)
170 W + 170 W (8 /ohms, 1 kHz with 0.7 % T.H.D.)
Surround: 140 W