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NSX-R81 EZ(S)




SERVICE MANUAL
CD STEREO SYSTEM
BASIC TAPE MECHANISM : 6ZM-3 PR4NM
BASIC CD MECHANISM : BZG-5 ZD5GNDM




CD REMOTE
SYSTEM CASSEIVER SPEAKER CONTROLLER


NSX-R81 CX-NR81 SX-NR80 RC-CAS01




If requiring information about the CD mechanism, see Service Manual of
BZG-5 ZD5GNDM, (S/M Code No. 09-023-353-3NC).




DATA
S/M Code No. 09-025-455-1N2
TABLE OF CONTENTS -1/1

SPECIFICATIONS ............................................................................................................................................................... 3

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING ...................................................................... 4

NOTE ON BEFORE STARTING REPAIR ................................................................................................................... 5, 6

ACCESSORIES PARTS LIST .............................................................................................................................................. 7

ELECTRICAL PARTS LIST ....................................................................................................................................... 8 ~ 23

TRANSISTOR ILLUSTRATION ........................................................................................................................................ 24

SCHEMATIC DIAGRAM -1/5 (MAIN-1/2, AMP SECTION) ............................................................................................... 25

SCHEMATIC DIAGRAM -2/5 (MAIN-2/2, TUNER SECTION) .......................................................................................... 26

SCHEMATIC DIAGRAM -3/5 (HP SECTION) ................................................................................................................... 27

WIRING -1/4 (MAIN C.B, HP C.B) ..................................................................................................................................... 28

SCHEMATIC DIAGRAM -4/5 (FRONT/DECK/CD-LED SECTION) ................................................................................. 29

WIRING -2/4 (FRONT C.B/CD-LED C.B) .......................................................................................................................... 30

WIRING -3/4 (DECK C.B/HEAD-1 C.B) ............................................................................................................................. 31

SCHEMATIC DIAGRAM -5/5 (POWER SECTION) .......................................................................................................... 32

WIRING -4/4 (POWER C.B) ............................................................................................................................................... 33

ELECTRICAL ADJUSTMENT .................................................................................................................................... 34 ~ 40

CD TEST MODE ................................................................................................................................................................ 41

LCD DISPLAY ............................................................................................................................................................ 42 ~ 43

IC BLOCK DIAGRAM ....................................................................................................................................................... 44

IC DESCRIPTION ..................................................................................................................................................... 45 ~ 46

MECHANICAL EXPLODED VIEW .................................................................................................................................. 47

MECHANICAL PARTS LIST ............................................................................................................................................ 48

COLOR NAME TABLE ..................................................................................................................................................... 49

TAPE MECHANISM EXPLODED VIEW <6ZM-3 PR4NM> ........................................................................................... 50

TAPE MECHANISM PARTS LIST <6ZM-3 PR4NM> ............................................................................................. 51 ~ 52

GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) ........................................................... 53

SPEAKER PARTS LIST (SX-NR80) ................................................................................................................................ 54

OTHER PARTS LIST ............................................................................................................................................... 55 ~ 56




-2-
SPECIFICATIONS -1/1

MAIN UNIT CX-NR81 GENERAL
TUNER Power requirements 230 V AC, 50 Hz
FM tuning range 87.5 MHz to 108 MHz Power consumption 110 W
FM usable sensitivity (IHF) 16.8 dBf Power consumption With ECO mode on: 0.6 W
FM antenna terminal 75 ohms (unbalanced) in standby mode With ECO mode off: 20 W
MW tuning range 531 kHz to 1602 kHz (9 kHz step) Dimensions (W x H x D) 260 x 324 x 360 mm
530 kHz to 1710 kHz (10 kHz step) Weight 7.8 kg
MW usable sensitivity 350