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NSX-R20 V(S)
SERVICE MANUAL
CD STEREO SYSTEM
BASIC CD MECHANISM : BZG-2 ZD9GNC1
BASIC TAPE MECHANISM : CMAT6Z2(1+1)ALPS
CD REMOTE
SYSTEM CASSEIVER SPEAKER CONTROLLER
NSX-R20 CX-NR20 SX-NR20 RC-CAS03(VS)
If requiring information about the CD mechanism, see Service Manual of
BZG-2, (S/M Code No. 09-023-353-2N8).
DATA
S/M Code No. 09-029-454-0N4
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 -1/1 ...................................................................................................................................... 7
ELECTRICAL PARTS LIST ....................................................................................................................................... 8 ~ 21
TRANSISTOR ILLUSTRATION ........................................................................................................................................ 22
SCHEMATIC DIAGRAM -1/4 (MAIN-1/2, AMP/HP SECTION) ......................................................................................... 23
SCHEMATIC DIAGRAM -2/4 (MAIN-2/2, TUNER SECTION) .......................................................................................... 24
WIRING -1/4 (MAIN C.B, HP C.B) ..................................................................................................................................... 25
SCHEMATIC DIAGRAM -3/4 (FRONT/DECK SECTION) ............................................................................................... 26
WIRING -2/4 (FRONT C.B) ................................................................................................................................................ 27
WIRING -3/4 (DECK C.B) .................................................................................................................................................. 28
SCHEMATIC DIAGRAM -4/4 (POWER SECTION) .......................................................................................................... 29
WIRING -4/4 (POWER C.B) ............................................................................................................................................... 30
ELECTRICAL ADJUSTMENT .................................................................................................................................... 31 ~ 37
CD TEST MODE ................................................................................................................................................................ 38
FL DISPLAY -1/1 ................................................................................................................................................................ 39
IC BLOCK DIAGRAM ............................................................................................................................................... 40 ~ 41
IC DESCRIPTION ..................................................................................................................................................... 42 ~ 43
MECHANICAL EXPLODED VIEW -1/1 ........................................................................................................................... 44
MECHANICAL PARTS LIST -1/1 ..................................................................................................................................... 45
COLOR NAME TABLE ..................................................................................................................................................... 46
TAPE MECHANISM EXPLODED VIEW ............................................................................... 47
TAPE MECHANISM PARTS LIST ......................................................................................... 48
GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) ........................................................... 49
SPEAKER PARTS LIST (SX-NR20) ................................................................................................................................ 50
OTHER PARTS LIST ....................................................................................................................................................... 51
-2-
SPECIFICATIONS -1/1
MAIN UNIT CX-NR20
TUNER
FM tuning range FM1 (OIRT): 65 MHz to 74 MHz (10 kHz step)
FM2 (CCIR): 87.5 MHz to 108 MHz (50 kHz step)
FM usable sensitivity (IHF) FM1: 15.3 dBf
FM2: 12.8 dBf
FM antenna terminal 75 ohms (unbalanced)
AM tuning range 531 kHz to 1602 kHz (9 kHz step)
530 kHz to 1710 kHz (10 kHz step)
AM usable sensitivity 350