NSX-DS50 NSX-DS55 U U SERVICE MANUAL COMPACT DISC STEREO SYSTEM BASIC TAPE MECHANISM : ZZM-3 PR3NM BASIC CD MECHANISM : BZG-5 ZD3NM SYSTEM CD CASSEIVER NSX-DS50 CX-NDS50 NSX-DS55 CX-NDS55 SPEAKER REMOTE CONTROLLER SX-NAJ502 SX-R290 SX-C610 RC-BAS10 VS • This Service Manual is the “Revision Publishing” and replaces “Simple Manual” of NSX-DS50 / DS55 , (S/M Code No. 09-014-445-3T1). S/M Code No.
SPECIFICATIONS MAIN UNIT CX-NDS50 / CX-NDS55 TUNER FM tuning range FM usable sensitivity (IHF) FM antenna terminals AM tuning range AM usable sensitivity AM antenna AMPLIFIER Power output Total harmonic distortion Inputs Outputs CASSETTE DECK Track format Frequency response Recording system Heads CD PLAYER Laser D/A converter Signal-to-noise ratio Harmonic distortion 87.5 MHz to 108 MHz 13.
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the instructions below when servicing. WARNING!! WHEN SERVICING, DO NOT APPROACH THE LASER EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY TO CONFIRM LASER BEAM EMISSION. BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN 30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK.
NOTE ON BEFORE STARTING REPAIR 1. Forced discharge of electrolytic capacitor of power supply block When repair is going to be attempted in the set that uses relay circuit in the power supply block, electric potential is kept charged across the electrolytic capacitors (C101, 102) even though AC power cord is removed. If repair is attempted in this condition, secondary defect can occur. In order to prevent the secondary trouble, perform the following measures before starting repair work.
In such a case, check also if the POWER AMPLIFIER circuit or power supply circuit has any abnormalities or not. 2-2. Regarding reset TE R There are cases that the machine does not work correctly because the MICROCOMPUTER is not reset even though the AC power cord is re-inserted, or the software reset (pressing the STOP key + POWER key) is performed. When the above described phenomenon occurs, it can lead to wrong judgement as if the MICROCOMPUTER is defective and to exchange the MICROCOMPUTER.
ELECTRICAL MAIN PARTS LIST REF. NO. PART NO. KANRI NO. DESCRIPTION REF. NO. PART NO. KANRI NO. DESCRIPTION MAIN C.
REF. NO. PART NO. C275 C301 C301 C302 C303 KANRI NO. 87-A12-091-080 87-012-278-080 87-012-188-080 87-012-188-080 87-012-268-080 DESCRIPTION CAP,E 10-50 SMG C-CAP,U 2200P-50 B C-CAP,U 47P-50 CH C-CAP,U 47P-50 CH C-CAP,U 330P-50 B C304 C305 C306 C307 C309 87-012-268-080 87-012-268-080 87-012-268-080 87-010-759-080 87-010-759-080 C310 C311 C312 C313 C314 REF. NO. C689 C701 C702 C703 C707 KANRI NO. 87-A12-058-080 87-012-195-080 87-012-195-080 87-012-286-080 87-A12-088-080 CAP,E 470-6.
REF. NO. PART NO. C997 C998 C999 CF831 CF832 KANRI NO. 87-010-831-080 87-A12-071-080 87-A11-155-080 87-008-261-010 87-008-261-010 DESCRIPTION C-CAP,U,0.1-16F CAP,E 47-25 SMG CAP,TC U 0.01-16 Z F FILTER, SFE10.7MA5 FILTER, SFE10.7MA5 CN105 CN183 CN301 CN351 CN601 87-099-195-010 87-099-564-010 87-A60-620-010 87-A60-625-010 87-099-719-010 CN701 CN703 CNA1 CNA102 CNA602 C501 C502 C503 C504 C601 KANRI NO.
REF. NO. PART NO. S335 S341 S342 S343 S344 KANRI NO. 87-A90-095-080 87-A90-095-080 87-A90-095-080 87-A90-095-080 87-A90-095-080 DESCRIPTION SW,TACT SW,TACT SW,TACT SW,TACT SW,TACT EVQ11G04M EVQ11G04M EVQ11G04M EVQ11G04M EVQ11G04M S345 S346 S347 S348 S349 87-A90-095-080 87-A90-095-080 87-A90-095-080 87-A90-095-080 87-A90-095-080 SW,TACT SW,TACT SW,TACT SW,TACT SW,TACT EVQ11G04M EVQ11G04M EVQ11G04M EVQ11G04M EVQ11G04M S361 S371 87-A92-172-010 87-A92-057-010 C101 C102 C103 C104 C105 REF. NO.
REF. NO. FB702 FB801 FB802 X701 PART NO. KANRI NO. 87-008-372-080 87-008-372-080 87-008-372-080 87-A70-115-010 DESCRIPTION REF. NO.
CHIP RESISTOR PART CODE Chip Resistor Part Coding 8 8 A Figure Resistor Code Value of resistor Chip resistor L W t :A Resistor Code : A 1.0 0.5 0.35 104 1.6 0.8 0.45 108 2 1.25 0.45 118 3.2 1.6 0.
WIRING – 1 (MAIN / FAN / VM2) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 12 –
SCHEMATIC DIAGRAM – 1 (MAIN 1 / 4 / FAN) – 13 –
SCHEMATIC DIAGRAM – 2 (MAIN 2 / 4 : TUNER) – 14 –
SCHEMATIC DIAGRAM – 3 (MAIN 3 / 4 : AMP) – 15 –
SCHEMATIC DIAGRAM – 4 (MAIN 4 / 4 : DECK) – 16 –
WIRING – 2 (FRONT) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 17 –
SCHEMATIC DIAGRAM – 5 (FRONT / DECK) – 18 –
WIRING – 3 (AC3) <1 / 2> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 A B C D E F G H I J K L M N O P Q R S T U – 19 – 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
WIRING – 3 (AC3) <2 / 2> 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 20 –
SCHEMATIC DIAGRAM – 6 (AC3 / VM2) – 21 –
WIRING – 4 (AMP / JACK / DET) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 22 –
SCHEMATIC DIAGRAM – 7 (AMP / JACK / DET) – 23 –
WIRING – 5 (PT) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H I J K L M N O P Q R S T U – 24 –
SCHEMATIC DIAGRAM – 8 (PT) – 25 –
WIRING 6 (DECK) 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 A TO FRONT C.B CN104 J DECK C.
IC BLOCK DIAGRAM – 27 –
– 28 –
FL (HNA-08MM29) GRID ASSIGNMENT AND ANODE CONNECTION GRID ASSIGNMENT – 29 –
ANODE CONNECTION (UP) (DOWN) – 30 –
IC DESCRIPTION IC, µPD784975AGF-102-3BA Pin No. Pin Name I/O Description 1 AVDD – Power supply. 2 I-HOLD I Power failure detected input. 3 I-CDSW I CD mecha switch A/D converter input. 4 I-SPEANA_1 I A/D input for spectrum analyser level display. 5 I-SPEANA_2 I A/D input for spectrum analyser level display. 6 I-SPEANA_3 I A/D input for spectrum analyser level display. 7 I-KEY1 I Key A/D input 1. 8 I-KEY2 I Key A/D input 2. 9 I-TU_SIG I Tuner signal input.
Pin No. Pin Name I/O Description 44 O-DSC/O-DATA O Function IC / Tuner IC, data output. 45 I-STEREO I Tuner STEREO detect input. 46 I-IFC I Tune IF count serial data input. 47 O-5VDSPRESET O IC, CS49326 reset output. 48 I-2VINTREQ I IC, CS49326 INT input. 49 NC – Not connected. 50 O-STB(SHIFT) O Shift register strobe output. 51 O-PLL_CLK O PLL IC clock enable output. 52 O-PLL_CE O PLL IC chip enable output. 53, 54 P1, P2 O FL segment P1, P2 output.
ADJUSTMENT < TUNER SECTION > < DECK SECTION > 1. Clock Frequency Check Settings : • Test point : TP2(CLK) Method : Set to AM 1710kHz and check that the test point is 2160kHz ± 45Hz. 9. Tape Speed Adjustment (DECK 2) Settings : • Test tape : TTA–100 • Test point : TP8(Lch), TP9(Rch) • Adjustment location : SFR1 Method : Play back the test tape and adjust SFR1 so that the frequency counter reads 3000Hz ± 5Hz. 2.
CD TEST MODE 1. How to Start the CD Test Mode While pressing the FUNCTION button, insert the AC plug to the power outlet. When the test mode is started, the message [CD TEST] is displayed. 2. How to Exit the CD Test Mode Press the POWER button or disconnect the AC plug. * When any key other than PRESET is pressed during play mode, the machine exits the test mode. 3.
MECHANICAL EXPLODED VIEW 1 / 1 A BZG-5 ZD3NM 47 A L PWB A A A 24 50 PWB 45 WIRE, BINDER M 48 C 32 A 44 A 49 43 F A 31 J PWB 22 FL901 30 PWB M WIRE, BINDER 40 N C 37 G 34 54 15 42 17 18 I 23 19 D 53 H O 46 A 1 A A 20 48 A A 16 WIRE, BINDER HT-SINK, FIN T2 A PWB 35 2 HT-SINK,S 41 O O 25 A PWB H 51 N I A 52 5 46 3 39 A 6 20 N A A 13 14 26 38 E 27 28 7 21 B 8 4 10 33 28 27 PLATE,EATH MECH 29 ZZM-3 PR3NM A K 36 9 CHAS,MAIN 11 12
MECHANICAL PARTS LIST 1 / 1 REF. NO. PART NO. 1 2 3 3 4 8B-NFK-008-010 8B-NFK-013-010 8B-NCK-011-010 8B-NCK-013-010 8B-NFK-033-010 KANRI DESCRIPTION NO. PANEL,TRAY WINDOW,TRAY WINDOW,DISP U<50> WINDOW,DISP U DS55<55> PANEL,FR U 5 6 7 8 9 8B-NCK-006-010 8B-NFK-024-010 8A-NF8-281-010 8B-NFK-003-010 8B-NFK-011-010 10 11 12 13 14 REF. NO. PART NO. KANRI DESCRIPTION NO.
TAPE MECHANISM EXPLODED VIEW 1 / 1 TERMINAL, LB1 33 A 34 55 A 44 45 43 36 42 31 32 41 46 51 TERMINAL,LB1 33 45 51 35 A 52 44 52 31 32 b a 29 43 47 29 40 39 28 48 50 42 53 46 49 35 41 30 27 37 47 B 38 21 a 48 40 19 27 49 20 26 25 b 24 17 23 18 16 22 28 30 21 26 20 25 24 19 IC, EW732 23 18 22 IC, EW732 54 9 5 6 38 1 14 54 39 2 10 11 c c 5 6 3 37 9 14 15 16 PWB 10 7 11 12 8 4 12 15 13 – 37 – 13
TAPE MECHANISM PARTS LIST 1 / 1 31 32 33 34 35 8Z-ZM3-233-010 84-ZM2-227-310 87-A92-198-010 87-A90-404-010 8Z-ZM3-239-010 KANRI DESCRIPTION NO.
GENERAL SPEAKER DISASSEMBLY INSTRUCTIONS (FOR REFERENCE) Type.1 Type.4 TOOLS Insert a flat-bladed screwdriver into the position indicated by the arrows and remove the panel. Remove the screws of each speaker unit and then remove the speaker units. 1 Plastic head hammer 2 (() flat head screwdriver 3 Cut chisel 1 2 3 How to Remove the PANEL, FR Type.2 Remove the grill frame and four pieces of rubber caps by pulling out with a flat-bladed screwdriver.
SPEAKER PARTS LIST SX-NAJ502 (YUSC,YUSC9,YUSL) REF. NO. PART NO. 1 2 3 4 4 KANRI DESCRIPTION NO. 8B-NS0-001-010 PANEL,FR 8B-NS0-003-010 GRILLE,FRAME ASSY 8B-NS0-008-010 PROTECTOR,TW 8B-NSK-602-010 SPKR,W 160 8B-NS0-602-010 SPKR,W 160 30/4 5 6 7 87-NSH-612-010 87-NS7-611-010 8B-NSK-604-010 SPKR,CERAMIC ASSY CORD,SPKR SPKR,T 60 SPEAKER PARTS LIST SX-R290 (YUSC) REF. NO. PART NO. 1 2 3 4 5 KANRI DESCRIPTION NO.
2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9820543 9301978 921338 Printed in Singapore
